Metformin – Nerve Pain & Microvascular Pain (angina)


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Metformin & Pain

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A diabetes drug used for many who have no diabetes. Recent discussion on metformin here and here.

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Metformin “can lead to a long-lasting reversal of pain hypersensitivity even long after treatment cessation, indicative of disease modification.” [ref below]

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References:

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A successful case of pain management using metformin in a patient with adiposis dolorosa.

International Journal of Clinical Pharmacology and Therapeutics

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In this case report, we describe a patient with Dercum’s disease who was successfully managed with metformin. The administration of metformin reduced pain intensity from 9/10 to 3/10 and favorably affected the profile of inflammatory cytokines (i.e., TNF a, IL-1β, IL-6, and IL-10), adipokines (i.e., adiponectin, leptin, and resistin), and β-endorphin. Because each variable was affected moderately by the drug, in the range of 20 – 30%, it follows that these effects are additive, i.e., they act independently of each other. However, taking into account advances in the pharmacology of metformin, it seems that other phenomena, such as modulation of synaptic plasticity, activation of microglia, and autophagy of the afferents supplying painful lipomas should be taken into consideration. Nonetheless, metformin deserves further exploration in the biology of pain.

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The use of metformin is associated with decreased lumbar radiculopathy pain

Journal of pain [2013], from University of Arizona Tucson, Ted Price’s lab, and USC

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Abstract:

Lumbar radiculopathy pain represents a major public health problem, with few effective long-term treatments. Preclinical neuropathic and postsurgical pain studies implicate the kinase adenosine monophosphate activated kinase (AMPK) as a potential pharmacological target for the treatment of chronic pain conditions. Metformin, which acts via AMPK, is a safe and clinically available drug used in the treatment of diabetes. Despite the strong preclinical rationale, the utility of metformin as a potential pain therapeutic has not yet been studied in humans. Our objective was to assess whether metformin is associated with decreased lumbar radiculopathy pain, in a retrospective chart review. We completed a retrospective chart review of patients who sought care from a university pain specialist for lumbar radiculopathy between 2008 and 2011. Patients on metformin at the time of visit to a university pain specialist were compared with patients who were not on metformin. We compared the pain outcomes in 46 patients on metformin and 94 patients not taking metformin therapy. The major finding was that metformin use was associated with a decrease in the mean of “pain now,” by −1.85 (confidence interval: −3.6 to −0.08) on a 0–10 visual analog scale, using a matched propensity scoring analysis and confirmed using a Bayesian analysis, with a significant mean decrease of −1.36 (credible interval: −2.6 to −0.03). Additionally, patients on metformin showed a non-statistically significant trend toward decreased pain on a variety of other pain descriptors. Our proof-of-concept findings suggest that metformin use is associated with a decrease in lumbar radiculopathy pain, providing a rational for larger retrospective trials in different pain populations and for prospective trials, to test the effectiveness of metformin in reducing neuropathic pain.

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The anti-diabetic drug metformin protects against chemotherapy-induced peripheral neuropathy in a mouse model.

PLoS One [2014] from MD Anderson Cancer Center

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Abstract

Chemotherapy-induced peripheral neuropathy (CIPN) characterized by loss of sensory sensitivity and pain in hands and feet is the major dose-limiting toxicity of many chemotherapeutics. At present, there are no FDA-approved treatments for CIPN. The anti-diabetic drug metformin is the most widely used prescription drug in the world and improves glycemic control in diabetes patients. There is some evidence that metformin enhances the efficacy of cancer treatment. The aim of this study was to test the hypothesis that metformin protects against chemotherapy-induced neuropathic pain and sensory deficits. Mice were treated with cisplatin together with metformin or saline. Cisplatin induced increased sensitivity to mechanical stimulation (mechanical allodynia) as measured using the von Frey test. Co-administration of metformin almost completely prevented the cisplatin-induced mechanical allodynia. Co-administration of metformin also prevented paclitaxel-induced mechanical allodynia. The capacity of the mice to detect an adhesive patch on their hind paw was used as a novel indicator of chemotherapy-induced sensory deficits. Co-administration of metformin prevented the cisplatin-induced increase in latency to detect the adhesive patch indicating that metformin prevents sensory deficits as well. Moreover, metformin prevented the reduction in density of intra-epidermal nerve fibers (IENFs) in the paw that develops as a result of cisplatin treatment. We conclude that metformin protects against pain and loss of tactile function in a mouse model of CIPN. The finding that metformin reduces loss of peripheral nerve endings indicates that mechanism underlying the beneficial effects of metformin includes a neuroprotective activity. Because metformin is widely used for treatment of type II diabetes, has a broad safety profile, and is currently being tested as an adjuvant drug in cancer treatment, clinical translation of these findings could be rapidly achieved.

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Proteomic and functional annotation analysis of injured peripheral nerves reveals ApoE as a protein upregulated by injury that is modulated by metformin treatment

from Mol Pain [2013], from University of Arizona

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Abstract

BACKGROUND:

Peripheral nerve injury (PNI) results in a fundamental reorganization of the translational machinery in the injured peripheral nerve such that protein synthesis is increased in a manner linked to enhanced mTOR and ERK activity. We have shown that metformin treatment, which activates adenosine monophosphate-activated protein kinase (AMPK), reverses tactile allodynia and enhanced translation following PNI. To gain a better understanding of how PNI changes the proteome of the sciatic nerve and ascertain how metformin treatment may cause further change, we conducted a range of unbiased proteomic studies followed by biochemical experiments to confirm key results.

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CONCLUSIONS:

These proteomic findings support the hypothesis that PNI leads to a fundamental reorganization of gene expression within the injured nerve. Our data identify a key association of ApoE with PNI that is regulated by metformin treatment. We conclude from the known functions of ApoE in the nervous system that ApoE may be an intrinsic factor linked to nerve regeneration after PNI, an effect that is further enhanced by metformin treatment.

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Volume 107 of the series Experientia Supplementum [2016] from University of Texas Dallas

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Abstract:

Chronic pain is a major clinical problem that is poorly treated with available therapeutics. Adenosine monophosphate-activated protein kinase (AMPK) has recently emerged as a novel target for the treatment of pain with the exciting potential for disease modification. AMPK activators inhibit signaling pathways that are known to promote changes in the function and phenotype of peripheral nociceptive neurons and promote chronic pain. AMPK activators also reduce the excitability of these cells suggesting that AMPK activators may be efficacious for the treatment of chronic pain disorders, like neuropathic pain, where changes in the excitability of nociceptors is thought to be an underlying cause. In agreement with this, AMPK activators have now been shown to alleviate pain in a broad variety of preclinical pain models indicating that this mechanism might be engaged for the treatment of many types of pain in the clinic. A key feature of the effect of AMPK activators in these models is that they can lead to a long-lasting reversal of pain hypersensitivity even long after treatment cessation, indicative of disease modification. Here, we review the evidence supporting AMPK as a novel pain target pointing out opportunities for further discovery that are likely to have an impact on drug discovery efforts centered around potent and specific allosteric activators of AMPK for chronic pain treatment.

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Targeting adenosine monophosphate-activated protein kinase (AMPK) in preclinical models reveals a potential mechanism for the treatment of neuropathic pain.

Mol Pain [2011] from University of Arizona

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Abstract

Neuropathic pain is a debilitating clinical condition with few efficacious treatments, warranting development of novel therapeutics. We hypothesized that dysregulated translation regulation pathways may underlie neuropathic pain. Peripheral nerve injury induced reorganization of translation machinery in the peripheral nervous system of rats and mice, including enhanced mTOR and ERK activity, increased phosphorylation of mTOR and ERK downstream targets, augmented eIF4F complex formation and enhanced nascent protein synthesis. The AMP activated protein kinase (AMPK) activators, metformin and A769662, inhibited translation regulation signaling pathways, eIF4F complex formation, nascent protein synthesis in injured nerves and sodium channel-dependent excitability of sensory neurons resulting in a resolution of neuropathic allodynia. Therefore, injury-induced dysregulation of translation control underlies pathology leading to neuropathic pain and reveals AMPK as a novel therapeutic target for the potential treatment of neuropathic pain.

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Contrasting effects of chronic, systemic treatment with mTOR inhibitors rapamycin and metformin on adult neural progenitors in mice.

Age [20124, from University of Arizona

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Abstract:

The chronic and systemic administration of rapamycin extends life span in mammals. Rapamycin is a pharmacological inhibitor of mTOR. Metformin also inhibits mTOR signaling but by activating the upstream kinase AMPK. Here we report the effects of chronic and systemic administration of the two mTOR inhibitors, rapamycin and metformin, on adult neural stem cells of the subventricular region and the dendate gyrus of the mouse hippocampus. While rapamycin decreased the number of neural progenitors, metformin-mediated inhibition of mTOR had no such effect. Adult-born neurons are considered important for cognitive and behavioral health, and may contribute to improved health span. Our results demonstrate that distinct approaches of inhibiting mTOR signaling can have significantly different effects on organ function. These results underscore the importance of screening individual mTOR inhibitors on different organs and physiological processes for potential adverse effects that may compromise health span.

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Two Weeks of Metformin Treatment Enhances Mitochondrial Respiration in Skeletal Muscle of AMPK Kinase Dead but Not Wild Type Mice

.PLoS One from University of Copenhagen [2013].

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Abstract:

Metformin is used as an anti-diabetic drug. Metformin ameliorates insulin resistance by improving insulin sensitivity in liver and skeletal muscle. Reduced mitochondrial content has been reported in type 2 diabetic muscles and it may contribute to decreased insulin sensitivity characteristic for diabetic muscles. The molecular mechanism behind the effect of metformin is not fully clarified but inhibition of complex I in the mitochondria and also activation of the 5′AMP activated protein kinase (AMPK) has been reported in muscle. Furthermore, both AMPK activation and metformin treatment have been associated with stimulation of mitochondrial function and biogenesis. However, a causal relationship in skeletal muscle has not been investigated. We hypothesized that potential effects of in vivo metformin treatment on mitochondrial function and protein expressions in skeletal muscle are dependent upon AMPK signaling. We investigated this by two weeks of oral metformin treatment of muscle specific kinase dead α2 (KD) AMPK mice and wild type (WT) littermates. We measured mitochondrial respiration and protein activity and expressions of key enzymes involved in mitochondrial carbohydrate and fat metabolism and oxidative phosphorylation. Mitochondrial respiration, HAD and CS activity, PDH and complex I-V and cytochrome c protein expression were all reduced in AMPK KD compared to WT tibialis anterior muscles. Surprisingly, metformin treatment only enhanced respiration in AMPK KD mice and thereby rescued the respiration defect compared to the WT mice. Metformin did not influence protein activities or expressions in either WT or AMPK KD mice.

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We conclude that two weeks of in vivo metformin treatment enhances mitochondrial respiration in the mitochondrial deficient AMPK KD but not WT mice. The improvement seems to be unrelated to AMPK, and does not involve changes in key mitochondrial proteins.

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Effects of metformin on microvascular function and exercise tolerance in women with angina and normal coronary arteries

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Journal of the American College of Cardiology [2006], from University of Glasgow Cardiovascular Research Centre
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Abstract:

We conducted an 8-week double-blind, randomized, placebo-controlled study of metformin 500 mg twice a day in 33 women with a prior history of normal coronary angiography but 2 consecutive positive (ST-segment depression ≥1 mm) exercise tolerance tests. Women randomized to metformin (n = 16) showed significant improvements in endothelium-dependent microvascular function (p < 0.0001) and maximal ST-segment depression (p = 0.013), and a trend (p = 0.056) toward reductions in chest pain incidence relative to placebo recipients. Hence, metformin may improve vascular function and decrease myocardial ischemia in nondiabetic women with chest pain and angiographically normal coronary arteries. Larger controlled trials of longer duration are warranted.

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The material on this site is for informational purposes only.

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It is not legal for me to provide medical advice without an examination.

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It is not a substitute for medical advice, diagnosis or treatment provided by a qualified health care provider.

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This site is not for email and not for appointments.

If you wish an appointment, please telephone the office to schedule.

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For My Home Page, click here:  Welcome to my Weblog on Pain Management!

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Please IGNORE THE ADS BELOW. They are not from me.

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Advertisements

Selenium Supplement


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Selenium Toxicity

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Almost every American is taking supplements without knowing the reactions they are causing. Most do not know the ingredients they take daily for years, then they see neurologists for muscle weakness and neuropathy. 90% of the causes of neuropathy are unknown – selenium is one.  Muscle weakness, another. Doctors don’t ask to review labels on supplements.

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The biggest issue (no pun) is insulin resistance that leads to diabetes and obesity.

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From Memorial Sloan Kettering Cancer Center Herbs & Botanicals

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“Excessive intake of selenium induces hepatic insulin resistance through opposite regulation of ROS [Reactive oxygen species].”

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Adverse reactions:

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“Oral consumption of 10 g of sodium selenate supplements for treatment of prostate cancer resulted in the death of a 75-year-old man.”

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Chronic selenosis (doses greater than 1000 µg/day): muscle weakness, fatigue, peripheral neuropathy, dermatitis, nail and hair changes/loss, garlic breath/body odor, irritability, growth retardation, hepatic necrosis” (death).

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Toxicity: “Consumption of gram quantities of selenium can cause severe gastrointestinal and neurological disturbances, acute respiratory distress syndrome, myocardial infarction and renal failure.”

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The material on this site is for informational purposes only.

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It is not legal for me to provide medical advice without an examination.

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It is not a substitute for medical advice, diagnosis or treatment provided by a qualified health care provider.

~~

This site is not for email and not for appointments.

If you wish an appointment, please telephone the office to schedule.

~~~~~

For My Home Page, click here:  Welcome to my Weblog on Pain Management!

..

Please IGNORE THE ADS BELOW. They are not from me.

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Neuropathic Pain Medications – review & metanalysis of 229 studies


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This review was done by many of the best pain specialists from all over the world. You will not find answers in that large review if neuropathic pain has already failed tricyclic antidepressants (Elavil, amitriptyline, Norpramin desipramine, others), gabapentin (Neurontin), pregabalin (Lyrica), lidocaine, capsaicin, or opioids. That is the current paradigm. A new paradigm – glial modulators  – that I discuss on this site, may or may not give relief.

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A member of the International Association for Study of Pain, IASP, published a brief critique of that comprehensive review of 229 trials of medications for neuropathic pain published in Lancet Neurology February 2015. The critique is posted below, done by a member of the Neuropathic Pain Special Interest Group, NeuPSIG.

 

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To understand the metanalysis of these 229 trials, you need to understand the simple concept of number needed to treat, NNT.

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NNT is an estimate of “the number of patients that need to be treated in order to have an impact on one person.”

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The smaller the number, the more effective the drug. Example, NNT of 7.2 for gabapentin means you need to treat  7.2 people before a response. If 3, need to treat 3 before a response.

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Barsook (Harvard, ref. below) reviewed ketamine studies in 2009:  “they did show a level of efficacy (of ketamine) based on NNT that equals or betters most drug trials for this condition.”

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“NeuPSIG has just published an up to date systematic review on the effectiveness of pharmacotherapy in Lancet Neurology. They have negotiated with the journal to make it available beautifully open access. You can download it for free here.”

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Neil O’Connell, Brunel University London

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“This is a comprehensive review, containing 229 trials of the full range of pharmacological agents using robust methods, to synthesize, summarise and make value judgements about the quality of the available evidence. So what are the take home messages?”

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“Using a primary outcome of achieving at least 50% pain relief trial outcomes were described as “generally modest”. The number of patients needed to treat with the drug compared to a placebo for one more person to achieve this outcome ranged from a relatively rosy 3.6 (95% confidence interval 3 to 4.4) for tricyclic antidepressants such as amitryptiline, 4.3 (95%CI 3.4 to 5.80 for strong opioids to a less impressive 7.2 (95%CI 5.9 to 9.21) for gabapentin, and 7.7 (6.5 to 9.4) for pregabalin (often sold under the brand-name Lyrica). It’s interesting, at least to me, how much better the older more traditional agents seem to have fared compared on effectiveness to the more modern (and commonly more expensive) agents although the safety and tolerability of gabapentin seems superior.”

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“The spectre of publication bias also raises its head. The reviewers carefully took a number of routes to try to unpick this notoriously difficult issue and estimate that there has been overall a 10% overstatement of treatment effects. Published studies reported larger effect sizes than did unpublished studies. This is not a problem restricted to the field of pain trials. It is a burning issue across the world of clinical trials. It is very important because if we fail to base our clinical recommendations on the totality of relevant evidence (because some data are hidden from us) we are in danger of mis-estimating the benefits and the harms and as a result patients are put at risk. If you think that is pretty important then there are ways that you can help. Check out the All-Trials campaign.”

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“Overall what does this mean? Many drugs are effective but not as effective as we would wish them to be. No pharmacological agent really impresses and for any drug the most probable outcome is failure to produce 50% pain relief. There are various potential reasons for this. The first is that the drugs may only be moderately or marginally effective, another is that neuropathic pain includes quite a mixed bag and our ability to accurately diagnose and to target drugs to specific mechanisms in the clinic is currently fairly poor.”

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“The NeuPSIG review team formulate a number of recommendations for revision of their clinical guideline for managing NP pain, balancing the benefits, harms, costs and strength of the evidence.”

  • a strong recommendation for use and proposal as a first-line treatment in neuropathic pain for tricyclic antidepressants, serotonin-noradrenaline reuptake inhibitors, pregabalin, and gabapentin;

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    • a weak recommendation for use and proposal as a second line treatment for lidocaine patches, capsaicin high-concentration patches, and tramadol; and a weak recommendation for use and proposal as third line for strong opioids and botulinum toxin A. Topical agents and botulinum toxin A are recommended for peripheral neuropathic pain only.

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“This email [from IASP’s NeuPSIG] is also published as a blogpost at www.bodyinmind.org”

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References

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Finnerup NB, Attal N, Haroutounian S et al. Pharmacotherapy for neuropathic pain in adults: a systematic review and meta-analysis. Lancet Neurol. 2015;14:2:162-73.

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Glial modulators – another paradigm

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From my January 2012 brief review of publications on ketamine, only one of a handful of glial modulators, this author says reviews “show a level of efficacy based on NNT that equals or betters most drug trials for this condition.

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Ketamine and chronic pain – Going the distance, David Barsook, Director, P.A.I.N. Group, Massachusetts General, McLean and Children’s Hospitals, Harvard Medical School, Boston, MA;

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This paper covers essential points not mentioned by many, thus quoted at length below:

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Our current therapeutic armamentarium is quite limited in terms of analgesic efficacy in controlled trials. Some would argue that the small efficacy (both at a population level and the magnitude of change in VAS score) this is related to the fact that we need to consider mechanistic approaches to chronic pain subgroups. However, patients and clinicians find themselves in a position of “what to do now”.

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Ketamine, brain function and therapeutic effect – neuroprotective or neurotoxic

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With the onset of chronic pain (including CRPS) a number of changes in brain function occur in the human brain including but not limited to: (1) central sensitization ; (2) functional plasticity in chronic pain and in CRPS; (3) gray matter volume loss in CRPS ; (4) chemical alterations ; and (5) altered modulatory controls. Such changes are thought to be in part a result of excitatory amino acid release in chronic pain. Excitatory amino acids are present throughout the brain and are normally involved in neural transmission but may contribute to altered function with excessive release producing increased influx of calcium and potentially neural death. Here lies the conundrum the use of an agent that potentially deleteriously affect neurons that may already be compromised but may also have neuroprotective properties by mechanisms that include reducing phosphorylation of glutamate receptors resulting in decreased glutamatergic synaptic transmission and reduced potential excitotoxicity . Alternatively, ketamine may affect glia regulation of glutamate and inhibit glutamate release within glia. However, by whatever mechanism ketamine acts on CRPS pain, there does seem to be a dose/duration effect in that longer doses at levels tolerated by patients seem to prove more effective in terms of the duration of effects.

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So what could be happening in the brain and what is required to alter brain systems and reverse the symptomatic state? Ketamine may diminish glutamate transmission and “resets” brain circuits, but it seems that a minimal dose and/or duration of treatment is required. Alternatively, ketamine may produce neurotoxicity and damage or produce a chemical lesion of affected neurons. These two issues are important to be understood in future trials. Reports from patients who have had anesthetic doses have included prolonged pain relief for many months. While the authors did not address issues such as the effect of dosing duration or repetitive dosing at say 6weeks, they did show a level of efficacy based on NNT that equals or betters most drug trials for this condition.”

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Conclusions

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As a community we have a major opportunity to define the efficacy and use of a drug that may offer more to CRPS (and perhaps other) patients than is currently available. This is clearly an opportunity that needs urgent attention and a number of questions remain to be answered. For example, is ketamine more effective in early stage disease? How does ketamine provide long-term effects? Further controlled trials evaluating dose, duration, anesthetic vs. non-anesthetic dosing are needed. Few of us really understand what it is like to suffer from a chronic pain condition such as CRPS. Ketamine therapy may be a way forward that can be brought into our clinical practice through further controlled studies that will allow for appropriate standards for use in patients.

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The material on this site is for informational purposes only, and is not a substitute for medical advice,

diagnosis or treatment provided by a qualified health care provider.

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Please understand that it is not legal for me to give medical advice without a consultation.

If you wish an appointment, please telephone my office.

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For My Home Page, click here:  Welcome to my Weblog on Pain Management!

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Be the change you wish to see – or walk away. Money at NIH


 

 

A Turning Point

 

$$$$$ MONEY $$$$$

 

at NIH

 

May not come this way again

 

NIH developing

5-year NIH-wide Strategic Plan

 

 

 

Donate to organizations, below

They can provide feedback to NIH via the

RFI Submission site


 

 

 

John C. Liebeskind, 1935 – 1997, distinguished scholar and researcher, past president of the American Pain Society, had the radical idea that pain can affect your health.

 

Research decades ago by an Israeli team at UCLA and others had shown “that pain can accelerate the growth of tumors and increase mortality after tumor challenge.” Decades ago Professor Liebeskind lectured all over the country: Pain kills.

 

He wrote an editorial in 1991, summarizing a life’s work:

 

“Pain and stress can inhibit immune function.”

 

 

Quoting John Bonica, the father of modern pain management, he wrote:

 

“Bonica has long argued that the term ‘chronic benign pain’ (used in distinction to pain associated with cancer) is seriously misleading.  Chronic pain is never benign, he contends; “it is a ‘malefic force’ that can devastate its victims’ lives and even lead to suicide.”

 

 

Liebeskind continues, “It appears that the dictum ‘pain does not kill,’ sometimes invoked to justify ignoring pain complaints, may be dangerously wrong.”

 

Pain mediates immune function

 

Importantly

 

  Opioids mediate the suppressive effect of stress on natural killer cells,

 

 published in 1984, immune system.

 

Alcohol increases tumor progression, 1992, immune system.

 

It used to be news.

He did not live to see change.

 

People just want to go on doing what they’re doing.

They want business as usual.

 

 

After 1991, we saw the great discoveries of neuroinflammation, pioneered by Linda Watkins, PhD, the early understanding of the innate immune system, its involvement in chronic pain and depression, and a few weeks ago, a British team showed neuroinflammation in teens with early signs of schizophrenia and DNA markers.

 

 

Major Depression has the same neuro-inflammation found in chronic pain, often responding to same medications, in particular glial modulators – immune modulators. Now, perhaps early schizophrenia will respond to glial modulators, reducing inflammation seen on scan in teens, before they become homeless and burned out by antipsychotic drugs

 

Inflammation out of control destroys neurons

 

Fire on the brain

 

 

We must be the change we wish to see

 

It’s not just the Bern. It’s been starting. Forces are finally coming together. We want change. It’s been too much. Too long.

 

We won’t take it anymore.

 

I figure if I tell you about it, you might just mention it to someone to pass it on. That is all. One small action may lead to change. Activate inputs to the NIH strategic plan.

 

 

~ Action needed ~

 

Prices of drugs becoming unaffordable

No new drugs for pain or major depression

Research to repurpose existing drugs

Expose the politics destroying our compounding pharmacies

 

Above all

The #1

Major Priority:

Request NIH to solicit priority call for research on

Glial modulators of the

Innate immune system

 

 

Why?

 

Glia modulate

chronic pain, major depression

and almost every known disease

 

Glia are your innate immune system

 

Inflammation kills

 

 

 

 Stress kills. Inflammation kills.

 

 

Pain kills

 

In the 1970’s, Professor Liebeskind and an Israeli team at UCLA injected cancer cells to two groups of rats that had sham surgery. Cancer spread much faster and killed far sooner in the group with poor treatment of surgical pain.

 

 

~ Pain kills ~

 

He lectured all over the country

 

Forty five years ago

 

 

I’m gonna be dead before I see this country do anything but unaffordable opioids and the magical ineffective trio of gabapentin, Lyrica, Cymbalta to treat chronic pain. The devastating, blind, nationwide emphasis does nothing to address the cause: inflammation, the innate immune system gone wild.


 

 

Innate immune system in action

 

Untreated pain suppresses the hormone systems too.

 

Untreated depression – same inflammation kills lives.

 

Where’s the money?

 

We are the change we wish to see. It’s pitiful I am so lazy. Suddenly, too late, we may need something, but, aha, no new drugs in the pipeline.

 

 

 

~ Make a joyful cry to NIH ~

 

They are soliciting input from professional societies

 

If your condition has failed all known drugs for pain or major depression, then make a joyful cry to NIH, now, before they give away all that nice new $$$$$money$$$$$.

 

 

Follow and join

 

American Pain Society

 

 

International Association for Pain

celebrating 40 years of pain research

 

 

Reflex Sympathetic Dystrophy Syndrome Association

help for CRPS/RSD  

 

 

 

The key to CRPS/RSD pain will apply to all forms of chronic pain, in particular the most difficult form, neuropathic pain. RSDSA funds research into all forms of chronic pain, not only Complex Regional Pain Syndrome (CRPS/RSD). Their scientific board members are not funded by opioid money.

 

 

 

Exactly

what is the annual cost of care

as fraction of GDP

for the growing population of Americans on opioids

for one year, for lifetime?

 

 

People are dying from prescription opioids and those who need them find they don’t work well enough. Prescriptions opioid costs must be a huge fraction of the medical costs in the United States GDP. You are required  to see a doctor every single month each year, often lifelong, just for one opioid, 12 months a year x 30 years x tens of millions of people and increasing – a growth industry. Not even counting $600 a day for the opioid, what the cost of monthly visits for 30 years? Not counting the army of DEA, FDA, CDC agents watching the opioids like a hawk. We all have to be sharp, addiction is growing. Addiction aside, deaths from prescription opioids are shaking up the CDC forcing urgent change this coming month.

 

 

 

Opioids do not work well for chronic pain

We need better

It’s not just the $600/day price

They just don’t work

 

 

donate

 

 

Raise a joyful noise at NIH now or write back at us readers with comments and better suggestions. Tell others what you’d like to see. Which politicians do you know would be most interested in this at national levels and organizations?

 

You may never see this change unless you do it now. Other forces will get this new money.

 

 

Turning point now

May not return

 

 

We are at a turning point and we will fail to catch the sail that’s coming fast to carry all research money in their shiny big stem cell direction. They never look back.

 

 

There is so many medications we can use today, FDA approved drugs that can be re-purposed and applied to recent cutting edge science. Someone must pay to do the work to study this.

 

 

Re-purpose old drugs

 

 

Stanford just showed a popular generic drug improved recovery of stroke paralysis in mice to begin at 3 days rather than 30. Old drug, new purpose, of course more years of testing to confirm in humans. Brilliant team applying new science.

 

 

Request
NIH to solicit a

Special Invitation

for 30 good protocols to

repurpose old drugs

 

 

Hundreds of old drugs, already approved, could be involved in mechanisms we have recently learned about. Speak up or money will go to shiny new stem cells. None for chronic pain or major depression. No company will find this profitable – it must be funded by NIH. A popular generic sleeping pill can bring astonishing return from stroke paralysis.

 

 

Congress has not opened this new money to NIH in many long years. How often will there be extra money?

 

 

donate

 

 

Lawrence A. Tabak, D.D.S., Ph.D.
Principal Deputy Director, NIH, solicits you to

Review the NIH Strategic Initiative Plan and their

Request for Information (RFI) and the NIH website

and provide your feedback via the RFI Submission site

 

 

This is for “stakeholder organizations (e.g., patient advocacy groups, professional societies) to submit a single response reflective of the views of the organization/membership as a whole. We also will be hosting webinars to gather additional input. These webinars will be held in early to mid-August.

 

 

 

Be the change you wish to see

Donate to those organizations

to solicit the change you wish to be

 

 

 

Happy New Year

Rejoice!

There’s money at NIH

 

 

 

 

 

 

The material on this site is for informational purposes only.

It is not a substitute for medical advice, diagnosis or treatment provided by a qualified health care provider.

Relevant comments are welcome.

If any questions, please schedule an appointment with my office.

This site is not for email.

~~~~~

For My Home Page, click here:  Welcome to my Weblog on Pain Management!

 

 

 

 

Proposal: A 5-Year Study of Best Methods to Treat Intractable Pain


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PROPOSAL

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A controlled trial to improve care for chronic pain:

The study to understand prognoses and preferences for

outcomes and risks of treatments

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Model after Joanne Lynn’s 1995 SUPPORT Study

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A controlled trial to improve care for seriously ill hospitalized patients:

The study to understand prognoses and preferences for

outcomes and risks of treatments (SUPPORT)

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Proposal

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A controlled five-year trial to improve care for outpatients with chronic pain. The study will be designed to understand prognoses and preferences related to the outcomes and risks of various treatments.

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The focus:

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Intractable pain, those who have failed pain medications and procedures or those with moderate to severe pain who only partially respond.

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Study polypharmacy, compare medications that may show synergy or that additively improve relief.

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Study and search for glial modulators – medications that reduce proinflammatory cytokines.

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Problem

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Research is needed to give persons with intractable pain the data and the confidence that they can affordably use to choose the best treatment needed to get their lives back again. They have already spent tens of thousands. They may be unable to work. We all need these options.

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There are a few small islands in this country doing a radical experiment in managing pain without opioids [narcotics, the police term] as discussed in the New York Times in May 2014, and the 2008 Mayo Clinic study. Efforts such as these need to be supported with data as soon as possible in order to reduce the burden of disability and pain in our society, especially our youth, our children, our veterans, our aging seniors, well everyone. We can be productive and we want to be.

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I have seen remarkable outcomes, pain that failed to respond to all known pain medications, going into partial and even total remission, lives restored after weaning off opioids and appropriate treatment given.

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We cannot expect any medication to work every time. How often can we achieve better results after opioids are tapered off? Opioids may prolong pain in Complex Regional Pain Syndrome where remission seems possible only after they are stopped, yet opioids may be essential in many forms of chronic pain. We need data on the radical experiment to manage pain without opioids, and determine how best to manage chronic pain with them.

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Opioids have a long history of being the drug of choice to treat chronic intractable pain by doctors who lack information and training about other exciting options now coming to the fore. Compounding the problem is the fact that physicians do not know how to diagnose musculoskeletal pain and do not know how that good physical therapy is actually effective.

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Healthcare providers need data about all the options to begin to address the toll that chronic intractable pain exacts and government worldwide need to know what is cost effective and possible. Many countries cannot obtain opioids.

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We must not be insensitive to the financial burden that frustrates patients when they spend tens of thousands of dollars for drugs that provide little if any benefit.

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Investment in developing nonopioid treatments for pain does not even begin to compare to the investment in opioids for pain. The few medication choices we have are not enough. Often they fail to help. Expensive drugs are not the best choice if they are not affordable or they are limited to diabetic neuropathy when more than 100 types of peripheral neuropathy have been identified, plus many more types of even more severe neuropathic pain not classified as neuropathy. Shall we continue to ignore all those because FDA has classed these few new drugs for diabetic neuropathy exclusively?

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Let me be clear, prescription of opioids is justified and they are valuable. Opioids are on the World Health Organization list of ten essential drugs. BUT there is little or no research on treatment of intractable pain without opioids.

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Neuropathic pain, nerve pain, is the most difficult to treat. Neuropathy, radiculopathy, transverse myelitis, adhesive arachnoiditis, central pain, RSD, Guillain-Barre, trigeminal neuralgia, Tic Douloureaux, post herpetic neuralgia, to name a few. It is not enough to limit research of neuropathic pain to diabetic neuropathy when it fails to address all other causes. When FDA approves a drug only for diabetic neuropathy, insurers deny the drug for the other 95% of you without diabetes. Insurers may choose to read guidelines as mandates, fiats,  marching orders.

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Neuropathic pain is not the only concern. Physicians do not know how to diagnose musculoskeletal pain. How can they if only 3% of medical schools teach pain management and when doctors do not know how to assess ineffective physical therapy when they have never seen better.

A patient dislocated her hip 7 times, manually repositioned each time in ER. The 6th surgeon impinged a wide band of muscle in the joint causing muscle all down the thigh to bulge 5 to 7 mm high, of rock hard spasm with intense relentless pain. The 7th surgeon had the gentle ability to restore position and release the entrapment. A light touch across the thigh even through clothing can detect the cause. Would a surgeon have discovered to release the entrapment unless she had dislocated a 7th time? Simple muscle strain, undiagnosed by a surgeon who deals with muscle all the time, was not even noticed and he ignored the acute pain it caused. She has now learned how to avoid dislocating that new hip. Had the muscle not been appropriately identified as cause, she would not be able to move by now. But the surgeon should have had the skills to notice instantly before those muscles became chronically strangled. She was referred for manual physical therapy and thankfully, before all else could occur, she dislocated and was repositioned by the 7th surgeon. A wonderful teaching case for a teaching hospital that should be every hospital. Grand Rounds for pain cases.

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MAJOR FUNDING DECLINE IN PAIN RESEARCH

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 BEFORE 2008

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 BEFORE CONGRESS CUT NIH BUDGET BY UNTHINKABLE 30% IN 2010

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Perhaps the biggest impediment to gathering data about pain management is the lack of government funding for pain research and lack of a Pain Institute at NIH. If not, funding will continue to be fragmented and split elsewhere, not to learn about one of the most costly problems in every society.

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In 2008, before the worldwide depression, pain research was in major decline. The AAAS, the American Association for Advancement of Science told us then:

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“Federal funding for pain research is declining sharply, more than 9 percent a year since 2003, according to a new study published in The Journal of Pain. Pain research, as a result, now accounts for only 0.6 percent of all grants awarded by the National Institutes of Health (NIH), despite the high prevalence of chronic pain in the U.S.

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“This startling finding shows the government’s meager investment in pain research is seriously out of proportion with the widespread chronic pain incidence in our society, which is estimated at one in four Americans and accounts for more than 20 percent of all physician office visits,” said Charles E. Inturrisi, president of the American Pain Society and professor of pharmacology at Weill Cornell Medical College, New York. “And this disparity is not attributable to years of budget cuts at NIH because the Journal of Pain study clearly shows pain research has a higher percentage decline than the overall NIH budget. So the drop in agency funding has not affected all research areas equally.”

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[emphasis mine.]

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Research in pain was sharply declining prior to 2008. Then a 30% cut across the board in 2010. Thank the American Pain Society for those ancient 2008 figures. No one had ever asked – which is why we need a Pain Institute at NIH.

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Frustration is compounded the last few years by insurers no longer willing to authorize many opioids and non-opioid medications, even generics.

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As for the cost of opioids,  a single opioid for one patient may exceed $80,000 per month when the patient is required to use with another long acting opioid, and often several nonopioid adjuncts just to bring pain down from 9 on scale of 10, to a slightly more bearable 7 or 8 which is severe, relentless and prevents sleep and ability to concentrate. One drug that costs pennies to make, sells for $80,000 a month to allow 4 a day when at least 6 a day are needed and it is only one of many for pain every day.

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Prescription of opioids is justified and may be invaluable.

but there is little or no research on

 treatment of intractable pain without opioids.

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We need national consensus guidelines based on data

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We must do a better job treating intractable pain. We need guidelines that have more to offer than the few opioids and few adjuvants we now have, so few in number, so great the need. Can we know when is it true that opioids are indicated? Our use is many times more than all the other First World countries?

 

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Treatment must be individualized

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Data is needed to guide choice

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Compounded Medications are among the

most useful drugs we have for treatment of intractable pain

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Compounded medications may be the only ones that help, and can reduce pain to zero. We can re-purpose the delivery of any medication, as long as it has been FDA approved. But the last few years insurers have been discontinuing coverage for compounded medications and Medicare has never covered them.

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This must change. Who is funding that political blockade that denies coverage for compounded medicine? The cost may be $120 for one compounded medication vs $80,000 for one opioid. Either way, the person with intractable pain likely needs 3 or 4 or 5 or 6 medications, compounded or not. Who can afford $400 per month out of pocket for compounded medications that work, when insurance will not cover the affordable drugs. Who can afford that out-of-pocket expense if insurers cover nothing for your pain, neither the bright shiny opioid or the compounded sprays, capsules, suspensions, creams, troches, as well as the essential solutions instilled into the bladder for interstitial cystitis?

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This must change. Lawmakers must be called to account for allowing and perpetuating the inhumane taking advantage of those who suffer intractable pain.

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A first step in getting lawmakers to pay attention is to amass a body of compelling data.

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BALANCE IS NEEDED

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The United States as a society cannot afford for pain research to die and go bankrupt and leave only opioids as the standard treatment for hundreds of types of pain. Someone has to begin the needed studies. It does not just bankrupt the patient, it leaves us all bankrupt, the country most importantly. It ends marriages, tears apart families. To be struck down as a child with intractable nerve pain the rest of your life, or be struck in your prime, is devastating. And disability gets routinely denied for pain. Why? Perhaps because pain is taught in only 3% of university medical schools. How are doctors to imagine that pain can end lives when they have no experience seeing how disabling it can be?

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 If doctors cannot see the devastating toll that pain takes,

how can we expect accountants to see it?

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The Study We Need

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Solution

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 To gain a comprehensive and compelling picture of how pain impacts the population and how to effectively treat it we need a large-scale study:

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  • Five years in duration

  • 10,000 outpatients – statistically this must be adjusted to obtain multiple outcomes

  • At five major university teaching hospitals for regional differences

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 Outcomes

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The study will yield important information about the following:

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  • Efficacy

  • Pain Numeric Rating Scores, Percent Improvement

  • Functional Improvement, etc

  • Compounded medications

  • Racial and Gender Disparities

  • Addicts who have chronic pain

  • Top notch manual physical therapy* [see below], not for what passes in most places. This must change ASAP. United States is far behind other countries. Even if the condition is neuropathic, it often becomes musculoskeletal after splinting for months, years

  • Interventional procedures

  • Meditation

    How you brain can heal your body and your body heal your brain.

  • Pain changes DNA, neurotransmitters. Have we permanently changed them with opioids?

  • Polypharmacy. When employing one drug alone is unlikely to lead to a successful outcome.

  • Stem cells for joint pain – autologous lipid derived mesenchymal stem cells

  • rTMS, experimental after 20 years, is it still better for acute than for chronic pain?
    Who will benefit, for how long? How many weeks of relief for that $15,000 investment?

  • Glia, the Innate Immune System

Opioids create pro-inflammatory cytokines that create pain and opioid tolerance.

Restore cytokine balance, reduce inflammation and pain.

Which of our existing medications either trigger or reduce inflammatory cytokines in the CNS?

  • Pain in the person with Alzheimers dementia

  • Danger of combining opioids with benzodiazepines

  • Danger of long term use of opioids (regardless if short or long acting)

  • Appropriateness of using opioids as a first choice in acute pain (loss of a milk tooth, sore throat in a teenager, acute back pain, ankle strain, etc.)

  • Appropriateness of opioid holidays.

  • Post op pain can be avoided completely with combined use of oral low dose naltrexone and ketamine IV anesthesia. Patients discharged directly from recovery room with no need for pain medication for months or years

  • Cost Benefit Analysis

 

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Five Conditions Will Be Studied

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Strong emphasis must be placed on neuropathic pain that so often fails to respond to any intervention

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1. Complex Regional Pain Syndrome

The Netherlands invested €25 million over 5 years to study this one devastating pain condition, far out of proportion to the incidence in that small country. There are pain specialists who cannot recognize it and/or doctors who routinely deny disability for this devastating pain, like death in life.

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2. Low Back Pain

Define criteria for surgery.

If we wait too long before surgery is done, will we ever reverse the chronic pain that has set in?

Have we condemned that patient to monthly visits for opioid the remaining 50 years of their life?

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3. Other neuropathic pain conditions such as adhesive arachnoiditis, trigeminal neuralgia, transverse myelitis, Tic Douloureaux, Post Herpetic Neuralgia, Interstitial Cystitis, Vulvodynia, Proctalgia, Pudendal Neuropathy


4. Painful peripheral neuropathy nondiabetic and Painful Small Fiber Neuropathy  all forms of painful neuropathy

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5. You choose – central pain?

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What We Must Do Now

 

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  • Find a pain advocate like the cancer advocate of the 1950’s that changed attitudes for research

  • Fund the pain SUPPORT study

  • This will spin off enormous research ideas that we must begin separately to implement with research as each develops, the need is beyond urgent. How many more years can we make everyone wait?

  • Write letters, to congress, the White House. Real letters, not email, not signature lists. Congress will not hear us unless we speak in very, very large numbers.

  • Help the topic of intractable pain become a part of the 2016 presidential conversation.

  • Incentivize teaching hospitals to teach pain management and to develop options for nonopioid treatment of chronic intractable pain. Pain is a multidisciplinary field, not limited to Anesthesiology procedures.

  • Create an Institute for Pain Management in addition to the 28 institutes at NIH, three of which are for addiction, none for pain. Pain is the number one reason people seek medical help.

  • Require that pain specialists sit on the FDA advisory committees for pain medication – none recently.

  • Require insurance coverage for compounded medications.

  • Prevent FDA from limiting medication to cancer pain.
    Cancer pain does not exist.

    There are basic types of pain that occur in persons who have cancer, neuropathic pain being worse than other forms of “cancer pain.” It has the same medication response or failure to respond as persons whose pain is not due to cancer.

  • How do we restrict the use of opioids to severe pain when there is nothing else to offer and after everyone is started on opioids by their family doctor years before they see a pain specialist?

  • Novel and ancient methods for treatment of pain should be explored including cannabis and possibly hallucinogens

  • Isolation of pharmacologically important medicine from rainforest and deep seas must be done before they disappear.

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Physical Therapy is the #1 Key to Chronic Pain

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Manual Physical Therapy was introduced to the United States in the late 1970’s but is rarely practiced or not done well. It does not mean “hands on.” It derives from techniques brought to us by British Commonwealth and Scandinavian countries. Our healthcare providers do not know how to differentiate between good and useless practices. Fortunes and lives are wasted hinging on that distinction. Pills never can undo the harm brought about by common musculoskeletal issues – and our providers have no training in recognizing simple muscle trigger points, let alone intractable connective tissue contractures. My patients have been misdiagnosed as histrionic, drug seeking, personality disorders, and worse. It boils down to ignorance and lack of basic training, let alone believing what the patient says and not having the tools to help.

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The trend is for year long residency programs following the 3 year Doctorate of Physical Therapy (DPT).  The year long residency program is a very positive step.  The limitations are that it is a year with a clinical staff that may have a specific perspective.  The push towards evidence based practice is a reasonable step but should not exclude considerations of outside the box treatment options.

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The osteopathic manipulative technique has been a cornerstone of best education for physical therapists.  The craniosacral approach is an offshoot from that tradition.  When we get to visceral mobilization, the evidence is much harder to produce but that does not have me shy away from its application.

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Movement is critical for the hormonal regulation of the body.  Chronic stasis leads to numerous changes that compound an underlying medical diagnosis.  We see that with a 16 y/o female, Lyme’s disease, CRPS diagnosis, bedridden for years.  She is significantly benefiting from stretching dysfunction and improving axial extension.  Another who quit walking had global lower limb connective tissue contracture.  Walking is currently limited by soft tissue contracture through the tarsal tunnel, affecting the plantar nerves and the burning and tingling with walking greater than 5 minutes at a time.  Mobilizing the soft tissues will ultimately restore function. This 20 year old quit college due to pain and one first visit requested motorized wheelchair and Social Security Disability. This young person will walk again.

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There is no end point to this educational process except when we think we know it all.  No certification, no degree, no one course signifies competency.  Ongoing intellectual curiosity is the most important element in preparation.

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Prescription painkiller overdose epidemic in the U.S.

Not in other countries

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Pain Management centers at major universities closed in 1991. They lose money, are time consuming, require team conferences that are not reimbursable. Thus began the era when prescription opioids took off for noncancer pain, and no one was generating nonopioid approaches to chronic pain. Anesthesiologists shifted to procedures – that is their focus after all. Procedures are not applicable to many types of pain.

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“Since 1999, the amount of prescription painkillers prescribed and sold in the U.S. has nearly quadrupled, yet there has not been an overall change in the amount of pain that Americans report.”

from the CDC report of prescription painkiller overdose epidemic

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I feel I have failed when I have to point out to my own patient whose pain is severe, that the high dose opioid I have prescribed is not helping, or is creating pain; when I know there are other options which are not available because the FDA has not approved them or because they are prohibitively expensive. I have failed when so many medications I prescribe are not on the formulary.

 

We need a mandatory formulary available for those with intractable pain.

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There were 16,651 deaths from prescription opioids in the U.S.in 2010, “Starting with 4,030 deaths in 1999….” “…nearly 60 percent of the drug overdose deaths (22,134) involved pharmaceutical drugs. Opioid analgesics, such as oxycodone, hydrocodone, and methadone, were involved in about 3 of every 4 pharmaceutical overdose deaths (16,651).” It’s far higher now. A CDC report stated that one in every 20 U.S. adults has a history of [opioid] use – not abuse, but use.

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Monitor risk, yes, but that should not get all the investment. Many addicts would not be there if there were better treatments for pain, if they had not been given opioids after a minor procedure or injury that is better treated with real therapy, not drugs.

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People with pain do not mention the pain has taken their lives. We may see them as weak. That young child with fractures on the ball field is going to need the best care so pain does not become chronic. Give him or her opioids and opioids cause pain, pain becomes worse, intractable before the 6th grade. That is not an addict, but that child and his or her parents are often treated like addicts, at least with suspicion, drug seeking. What is best for that child with chronic pain when she becomes pregnant? When nursing? Think of our young veterans, some with 3 or 4 different pains, and each type addressed differently. What if either of them was an addict before the pain? If we don’t treat them, they will turn to drugs. What are the best, most efficient, options for treatment of intractable pain? When will we learn? We need to identify and treat before it becomes chronic.

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Chronic pain can be reduced or eliminated in many situations now even possibly without drugs, provided the issue is properly identified – and that will never happen until providers are educated in how to identify first class physical therapy. Further research will help to release persons with intractable pain from the prison that too often makes them feel that life is unbearable and that they can more easily face death. We all need to wake up to this situation.

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If we continue to passively allow nothing to be done, then there may be nothing to help us when we fall into the sudden bind of intractable pain when we wake up one day with shingles or a pinched nerve or when pain of the face prevents us from eating or sleeping or speaking or even wanting to live. It will be too late.

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Sharp like a razor’s edge is the path,
The sages say, difficult to traverse.

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Shall we let those we love hang on the edge while we fail to move this multi-tentacled monster forward? How do we light the fire that enables us to solve this fearful fragmentation of choices?

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See how beautifully it works when the right combinations are brought together?

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Yellow rose blue hibiscus

 

 

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The material on this site is for informational purposes only.
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It is not legal for me to provide medical advice without an examination.

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It is not a substitute for medical advice, diagnosis or treatment provided by a qualified health care provider.

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This site is not for email and not for appointments.

If you wish an appointment, please telephone the office to schedule.

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For My Home Page, click here:  Welcome to my Weblog on Pain Management!

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Please ignore the ads below. They are not from me.

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Palmitoylethanolamide “PEA” – Review of Anti-inflammatory, Analgesic, Neuroprotective Mechanisms


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A review of palmitoylethanolamide, or PEA, has been published this June by Mireille Alhouayek and Guilio G. Muccioli from the Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, Bruxelles, Belgium.

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The authors review the impact of PEA on inflammatory and neurodegenerative diseases, and show that inhibiting the breakdown of PEA (the hydrolysis) may increase levels of PEA. This could lead to treatment of inflammatory and neurodegenerative diseases.

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To address the loss of PEA that occurs in various diseases we must either

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1.  replace the decreased levels of endogenous PEA that is made by the brain by taking a capsule such as PeaPure,  a food supplement that contains 100% palmitoylethanolamide, to reconstitute the needed levels

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2.  inhibit the breakdown (hydrolysis) of PEA.

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.I directly quote palmitoylethanolamide4pain that has outlined key quotes from that scientific review:

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They start outlining the focus of the paper:

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Our focus here is on PEA, which is a known anti-inflammatory compound with analgesic, neuroprotective and antiallergic properties.

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Important for understanding the therapeutic relevance of PEA is the next remark:

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Evidence suggests that PEA metabolism is disturbed during inflammation, and that a decrease in PEA levels contributes to the inflammatory response.

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This explains why it is so useful to administer exogenous PEA as a supplement during states of chronic inflammation. Decreased PEA levels induce more inflammation and a vicious circle has started. Administering PEA (for instance as PeaPure capsules of 400 mg, a foodsupplement) can stop this circle and help the organism to restore the PEA levels and decrease inflammation.

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PEA’s mechanism of action

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The next quote is related to PEA’s main mechanism of action:

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Although it is now clear that PEA is a ligand for PPAR-a, some of its effects occur through as yet unidentified receptors.

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Although there are many ways PEA acts in the cell, the PPAR-a receptor indeed seems the most important one; through that receptor PEA can downregulate overactive inflammatory responses.

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PEA levels also decreased following sciatic nerve constriction injury or ligation of the sciatic nerve in spinal cord and brain areas involved in nociception

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PEA levels are not only decreased during chronic inflammation, also during chronic pain states, such as in sciatic pain.

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The fact that an anti-inflammatory treatment restores PEA levels reinforces the role of PEA as an anti-inflammatory mediator.

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PEA levels can be restored also by treatment with classical anti-inflammatory compounds such as NSAIDs, this however triggers many side effects and that can be avoided by treating with PEA itself!

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PEA as a protective molecule

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In the brain, PEA levels seem to be increased following injurious stimuli, and this has been proposed as a homeostatic mechanism aimed at counteracting inflammation and blunting the inflammatory response.

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PEA has self-reparative properties and indeed can be defined as the molecule of self-reparation and self-protection.

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This ‘pro-homeostatic’ increase, although probably slowing disease progression, seems insufficient to exert anti-inflammatory effects in itself, and should be further amplified…

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One of the classical ways to amplify PEA is to administer it as food supplement: start dose is 1200 mg/daily and in cases of insufficient response we suggest to double the dose.

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Although the first identification of PEA as an anti-inflammatory compound occurred more than 50 years ago, general interest in its anti-inflammatory and analgesic properties was not sparked again until the mid-1990s.

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It was due to the work of the Nobel laureate professor Rita Levi-Montalcini that the scientific community understood the importance of PEA in the 90s. However, as patents on this natural compound were not possible, no great interest emerged, as pharmaceutical companies were uninterested. It was due to the work of small companies, such as Epitech Srl and JP Russell Science that PEA was brought to the attention of the general public.

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Mechanism of action in addition to the PPAR receptor

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The authors nicely summarized the effects of PEA:

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PEA inhibits phosphorylation of kinases involved in activation of pro-inflammatory pathways, such as mitogen-activated protein kinase (MAPK), c- Jun N-terminal kinase (JNK) and extracellular signal-regulated kinases (ERK), and the nuclear translocation of the transcription factors nuclear factor (NF)-kB and activator protein 1 (AP-1) and prevents degradation of the inhibitory IkB-a, which when associated to NF-kB prevents its nuclear translocation.

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Besides reducing inflammatory cells activation and recruitment, PEA modulates the expression of enzymes involved in pro-inflammatory processes, such as COX-2 and inducible nitric oxide synthase (iNOS) and reduces nitric oxide and pro-inflammatory cytokines production in vitro and in vivo.

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Relevance for Alzheimer, Parkinson’s and MS

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The neuroprotective effects of PEA are in part the result of its effects on downregulating the inflammatory cascade. Indeed, many neurodegenerative diseases are associated with a strong inflammatory component, such as Alzheimer’s disease (AD), Parkinson’s disease (PD) or MS

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The follow stating:

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This neuroinflammation is no longer simply considered as a consequence of neurodegeneration, but might be a primary factor in some cases; therefore, anti-inflammatory treatments might represent interesting therapeutic strategies in these diseases

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After discussing modern pharmaceutical ways to block the hydrolysis of PEA with pharmaceutical new compounds, they end their overview with an important statement:

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The potential of using PEA as a beneficial endogenous bioactive lipid in the setting of inflammation is well established

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My thanks to palmitoylethanolamide4pain for the outline of key points in this review of PEA.

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The material on this site is for informational purposes only.

It is not a substitute for medical advice, diagnosis or treatment provided by a qualified health care provider.

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For My Home Page, click here:  Welcome to my Weblog on Pain Management!

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