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Current Drug Therapy

Editor-in-Chief

ISSN (Print): 1574-8855
ISSN (Online): 2212-3903

Ketamine for Chronic Pain and Treatment Resistant Depression: A Mechanistic Hypothesis

Author(s): Christine Chang, David Bezov and Marco Pappagallo

Volume 5, Issue 4, 2010

Page: [229 - 249] Pages: 21

DOI: 10.2174/157488510792927447

Price: $65

Abstract

Chronic Pain syndromes and Major Depressive Disorder account for two of the most costly and prevalent illnesses worldwide and are frequently comorbid and treatment resistant. In this review, we examine the current role of ketamine, a potent NMDA (N-methl-D-aspartic acid) receptor blocker, in treating chronic pain and major depression. The role of the NMDA receptor and glutamatergic system are increasingly being studied in mood disorders, and are known components in pain processing, opioid induced analgesic tolerance, and hyperalgesia. We propose a hypothetic therapeutic role of ketamine involving the opioidergic pathway in these patients with treatment resistant chronic pain and major depressive disorder.

Keywords: Chronic pain, ketamine, major depressive disorder, neuropathic pain, nmda receptor antagonist, opioid tolerance, opioid resistance, analgesic, hyperalgesia, dysthymia, antidepressant, neurotransmitters, glutamate receptor, synaptic plasticity, coincidence detector, cholinergic receptors, kappa opioid receptors, psychomimetic, serotonin, anesthetic effect, cerebral vasodilation, hallucinations, nightmares, morphine, benzodiazepine, tachyarrhythmias, schizophrenia, allodynia, lidocaine, postherpetic neuralgia, xerostomia, Limb Pain, Fibromyalgia, Pluronic lecithin organogel, Stump/Phantom, Whiplash Pain, Placebo-controlled, Montgomery, , Asberg Depression Rating Scale, lamotrigine, epidural, Opioidergic, Glutamatergic Dysfunction, naloxone

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