Papers by Terence Coderre
Pain, Feb 1, 2002
Although many studies have demonstrated a role for substance P in pain, there have been conflicti... more Although many studies have demonstrated a role for substance P in pain, there have been conflicting reports implicating the involvement of substance P in neuropathic pain models. In this study, the non-peptide neurokinin-1 (NK-1) receptor antagonist, L-732,138 was chronically administered by intrathecal (i.t.) injection to rats with mono-neuropathy produced by sciatic nerve constriction. Rats exhibited tactile allodynia and cold hyperalgesia over a 16-day testing period. L-732,138 (5-200 nmol) administered i.t. prior to and for 3 consecutive days post-surgery attenuated the mechanical allodynia and cold hyperalgesia on days 4 and 8 post-surgery. The effects of i.t. L-732,138 were also determined in rats with established nerve injury-induced neuropathy. The NK-1 receptor antagonist was injected for 4 consecutive days starting on day 8 post-sciatic nerve injury. Administration of L-732,138 (5-200 nmol) i.t. produced both anti-allodynic and anti-hyperalgesic effects on day 12, but the effect was not permanent, as nociceptive thresholds were similar to controls by day 16. These results demonstrate that substance P is involved both in the induction and the maintenance of neuropathic pain and provides justification for the development and administration of substance P antagonists for the management of clinical neuropathic pain.
Pain Research and Management, 2000
The breadth of peripheral effects produced by nerve growth factor (NGF) in nociceptive processing... more The breadth of peripheral effects produced by nerve growth factor (NGF) in nociceptive processing has been well documented. However, less is known about the functional significance of central NGF in nociceptive transmission. The effect of NGF on the nervous system is dependent on the developmental stage. During the prenatal developmental period, NGF is critical for survival of nociceptors; in the postnatal period it regulates the expression of nociceptor phenotype, and in the adult it contributes to pain following an inflammatory insult. The implications for central NGF in the expression and regulation of spinal neuropeptides that are involved in pain mechanisms are reviewed. Knowledge has been gained by studies using peripheral nerve injury models that cause a deprivation of central NGF. These models also give rise to the development of pain syndromes, which encompass spontaneous pain, hyperalgesia and allodynia, routinely referred to as neuropathic pain. These models provide an ap...
Pain Medicine, Aug 1, 2010
Complex regional pain syndrome-type I (CRPS-I; reflex sympathetic dystrophy) is a chronic pain co... more Complex regional pain syndrome-type I (CRPS-I; reflex sympathetic dystrophy) is a chronic pain condition that usually follows a deep-tissue injury such as fracture or sprain. The cause of the pain is unknown. We have developed an animal model (chronic post-ischemia pain) that creates CRPS-I-like symptomatology. The model is produced by occluding the blood flow to one hind paw for 3 hours under general anesthesia. Following reperfusion, the treated hind paw exhibits an initial phase of hyperemia and edema. This is followed by mechanohyperalgesia, mechano-allodynia, and coldallodynia that lasted for at least 1 month. Light microscopic analyses and electron microscopic analyses of the nerves at the site of the tourniquet show that the majority of these animals have no sign of injury to myelinated or unmyelinated axons. However, electron microscopy shows that the ischemia-reperfusion injury produces a microvascular injury, slow-flow/no-reflow, in the capillaries of the hind paw muscle and digital nerves. We propose that the slow-flow/no-reflow phenomenon initiates and maintains deep-tissue ischemia and inflammation, leading to the activation of muscle nociceptors, and the ectopic activation of sensory afferent axons due to endoneurial ischemia and inflammation. These data, and a large body of clinical evidence, suggest that in at least a subset of CRPS-I patients, the fundamental cause of the abnormal pain sensations is ischemia and inflammation due to microvascular pathology in deep tissues, leading to a combination of inflammatory and neuropathic pain processes. Moreover, we suggest a unifying idea that relates the pathogenesis of CRPS-I to that of CRPS-II. Lastly, our hypothesis suggests that the role of the sympathetic nervous system in CRPS-I is a factor that is not fundamentally causative, but may have an important contributory role in early-stage disease.
Pain, 1986
... Terence J. Coderre Corresponding Author Contact Information , Robert W. Grimes and RonaldMelz... more ... Terence J. Coderre Corresponding Author Contact Information , Robert W. Grimes and RonaldMelzack. Department of Psychology, McGill University, 1205 Docteur Penfield Ave., Montreal, Que. H3A 1B1, Canada. Received 11 December 1985; accepted 6 February 1986. ...
We have previously suggested that protein kinase C (PKC) contributes to persistent pain in the fo... more We have previously suggested that protein kinase C (PKC) contributes to persistent pain in the formalin test. This study compared the effects of pharmacological inhibition of PKC with either GF 109203X or chelerythrine on persis- tent pain following noxious chemical stimulation with its effects on mechanical hyperalgesia, which develops in the hindpaw contralateral to an injury produced by noxious thermal
Pain, 1984
To determine the effects of application of ccipsaicin on the functioning of cutaneous nerve !ibres.
The Journal of Neuroscience : The Official Journal of the Society for Neuroscience
The contribution of intracellular calcium to central sensitization and persistent nociception in ... more The contribution of intracellular calcium to central sensitization and persistent nociception in response to tissue injury in rats was examined following the subcutaneous injection of formalin into the hindpaw. Formalin injury-induced nociceptive behaviors were enhanced by intrathecal pretreatment with the calcium ionophore A23187 or the calcium channel agonist Bay-K8644. Conversely, formalin nociceptive responses were reduced by intrathecal pretreatment with the calcium chelator Quin 2 or the calcium channel antagonists verapamil and nifedipine. Each of these agents affected the tonic, but not the acute, phase of the formalin response. The enhancement in formalin nociceptive behavior in rats treated with L-aspartate or L-glutamate was reversed by combined pretreatment with the noncompetitive NMDA antagonist MK-801, but not by nifedipine or the non-NMDA excitatory amino acid antagonist 6-cyano-7-dinitroquinoxaline-2,3-dione. In rats not treated with excitatory amino acids, the analg...
Cahiers d'anesthésiologie
Although opioids are the most commonly used analgesics, their therapeutic efficacy is limited by ... more Although opioids are the most commonly used analgesics, their therapeutic efficacy is limited by the development of tolerance and dependence with chronic use. Many studies have examined the possible mechanisms underlying the development of opioid tolerance and dependence. Recently, several groups of investigators have focused on excitatory amino acid receptors, specifically N-methyl-D-aspartate (NMDA) receptors, and related intracellular second messenger systems as possible mediators of opioid tolerance and dependence. The hypothesis proposed in this Focus article is an extension of these models of opioid tolerance and dependence, which suggests that metabotropic glutamate receptors (mGluRs) play a key role in the development of opioid tolerance and dependence. We propose that activity at group I mGluRs (and possibly also δ-opioid receptors), which are positively coupled to phosphatidylinositol (PI) hydrolysis, increases during chronic morphine administration. This ultimately leads ...
The Journal of neuroscience : the official journal of the Society for Neuroscience, 1999
Behavioral, electrophysiological, and autoradiographic experiments were done to study the second ... more Behavioral, electrophysiological, and autoradiographic experiments were done to study the second nociceptive phase in the formalin test. In initial experiments, this second phase was attenuated by 1-10 mg of the NK-1 receptor antagonist CP-99,994, given subcutaneously 10, 30, or 60 min before formalin (n = 8-10) and by 20 microgram given intrathecally 20 min after formalin (n = 13); the inactive isomer CP-100,263 was ineffective. In electrophysiological experiments on single dorsal horn neurons in vivo, the excitatory responses to subcutaneous formalin injection (50 microliter, 2.5%) were attenuated by subsequent intravenously administration of the NK-1 receptor antagonist CP-96,345 (0.5 mg/kg; n = 8), given 35-40 min after formalin, but not by the inactive enantiomer CP-96,344 (0.5 mg/kg; n = 9). Finally, autoradiographic binding of exogenous [(125)I]BH-substance P in the lumbar cord was reduced at 5 and 25 min after formalin (50 microliter, 1 or 5%), with an intermediate level of ...
The Journal of pharmacology and experimental therapeutics, 1995
Experiments were performed to investigate the possible involvement of spinal mu-, delta- and kapp... more Experiments were performed to investigate the possible involvement of spinal mu-, delta- and kappa-opiate receptors in mediating the antinociceptive effects of noxious thermal stimulation of one hindpaw on the tail flick reflex in the rat. Male Sprague-Dawley rats were implanted with chronic intrathecal catheters to the lumbar level of the spinal cord. After 5 to 7 days, they were lightly anesthetized with an i.p. injection of a mixture of Na-pentobarbital (20 mg/kg) and chloral hydrate (120 mg/kg). After baseline readings were taken in the tail flick test a conditioning noxious thermal stimulus, which consisted of immersion of one hindpaw in water at 55 degrees C for 90 sec, was applied and the effects on the latency of the tail withdrawal reflex were studied over the next 30 min. In animals pretreated with CSF intrathecally 10 min before the stimulus, an increase in tail flick reaction time was observed peaking at 30 sec after the stimulus. This response was attenuated in a dose-r...
The Journal of neuroscience : the official journal of the Society for Neuroscience, 1995
We have previously suggested that protein kinase C (PKC) contributes to persistent pain in the fo... more We have previously suggested that protein kinase C (PKC) contributes to persistent pain in the formalin test. This study compared the effects of pharmacological inhibition of PKC with either GF 109203X or chelerythrine on persistent pain following noxious chemical stimulation with its effects on mechanical hyperalgesia, which develops in the hindpaw contralateral to an injury produced by noxious thermal stimulation. Furthermore, we have assessed changes in membrane-associated PKC in spinal cord in response to both noxious chemical and thermal stimulation. Nociceptive responses, to a hindpaw injection of 50 microliters of 2.5% formalin, and flexion reflex thresholds, to mechanical stimulation (Randall-Selitto test) in the hindpaw contralateral to a thermal injury (15 sec immersion in water at 55 degrees C), were assessed following intrathecal injection of PKC inhibitors (GF 109203X or chelerythrine). Changes in the levels of membrane-associated PKC, as assayed by quantitative autorad...
Pain, 1984
The effects of peripheral adrenergic depleting agents on the threshold for non-damaging heat pain... more The effects of peripheral adrenergic depleting agents on the threshold for non-damaging heat pain (tail-flick test), inflammatory pain associated with tissue injury (formalin test), and chronic pain or dysaesthesia associated with nerve lesions (autotomy test) were examined. Tail-flick latencies were increased by agents which deplete peripheral adrenergic transmitters--6-hydroxydopamine (6-OHDA) and guanethidine--as well as by an agent which prevents the synthesis of noradrenaline--FLA63. A combination of guanethidine and FLA63 also increased latencies, but no more than either treatment alone. Formalin pain scores were reduced by FLA63+ guanethidine and 6-OHDA, but not by guanethidine or FLA63 alone. The percentage of rats that exhibited autotomy was reduced minimally by 6-OHDA and guanethidine treatments which started the day of surgery, maximally by guanethidine treatments which started 4 days before surgery, and not at all by guanethidine treatments which started 4 days after sur...
The Journal of neuroscience : the official journal of the Society for Neuroscience, 1992
The contribution of excitatory amino acids (EAAs) to the development of central sensitization and... more The contribution of excitatory amino acids (EAAs) to the development of central sensitization and persistent nociception in response to tissue injury in rats was examined following the subcutaneous injection of formalin into the hindpaw. Formalin-induced nociceptive behaviors were enhanced by intrathecal pretreatment with the EAAs L-glutamate and L-aspartate. An enhancement of the formalin nociceptive response was also produced by intrathecal pretreatment with the receptor-selective EAA agonists NMDA and trans-(+/- )-1-amino-1,3-cyclopentane dicarboxylic acid (ACPD), but not (R,S)-alpha-amino-3-hydroxy-5-methylisozazole-4-propionic acid hydrobromide (AMPA). The effect of NMDA was enhanced by a combined administration with AMPA or APCD. Formalin nociceptive responses were dose-dependently reduced by intrathecal pretreatment with the NMDA receptor antagonists 2-amino-5-phosphonovaleric acid (APV) and (+)-MK-801 hydrogen maleate, but not the selective AMPA antagonist 6-cyano-7-nitroqui...
Handbook of Psychology, 2003
... Standard Article. The Biological Psychology of Pain. Terence J. Coderre PhD 1 ,; Jeffrey S. M... more ... Standard Article. The Biological Psychology of Pain. Terence J. Coderre PhD 1 ,; Jeffrey S. Mogil PhD 2 ,; M. Catherine Bushnell PhD 1. Published Online: 15 APR 2003. DOI: 10.1002/0471264385. wei0309. Copyright © 2003 by John Wiley & Sons, Inc. Book Title. ...
Pain Forum, 1999
ABSTRACT Although opioids are the most commonly used analgesics, their therapeutic efficacy is li... more ABSTRACT Although opioids are the most commonly used analgesics, their therapeutic efficacy is limited by the development of tolerance and dependence with chronic use. Many studies have examined the possible mechanisms underlying the development of opioid tolerance and dependence. Recently, several groups of investigators have focused on excitatory amino acid receptors, specifically N-methyl-D-aspartate (NMDA) receptors, and related intracellular second messenger systems as possible mediators of opioid tolerance and dependence. The hypothesis proposed in this Focus article is an extension of these models of opioid tolerance and dependence, which suggests that metabotropic glutamate receptors (mGluRs) play a key role in the development of opioid tolerance and dependence. We propose that activity at group I mGluRs (and possibly also δ-opioid receptors), which are positively coupled to phosphatidylinositol (PI) hydrolysis, increases during chronic morphine administration. This ultimately leads to increased activation of protein kinase C, with concomitant phosphorylation of μ-opioid receptors (desensitizing them), and the ion channel associated with the NMDA receptor (allowing increased influx of Ca2+). We also suggest that there is a heterologous desensitization of group II and III mGluRs, which are negatively coupled to cyclic adenosine monophosphate (cAMP) production, contributing to the increased cAMP production seen during opioid dependence and withdrawal. Thus, although we agree with previous investigators about the importance of NMDA receptors, we hypothesize that mGluRs also play a critical role in the contribution of excitatory amino acids to opioid tolerance and dependence.
Neurochemical research, 2003
High-resolution (500 MHz) multiresonance/multinuclear proton (1H) nuclear magnetic resonance (NMR... more High-resolution (500 MHz) multiresonance/multinuclear proton (1H) nuclear magnetic resonance (NMR) spectroscopy was used to detect metabolic changes and cellular injury in the rat brain stem and spinal cord following chronic morphine treatment. Compensatory changes were observed in glycine, glutamate, and inositols in the brain stem, but not the spinal cord, of chronic morphine-treated rats. In spinal cord, increases were detected in lactate and N-acetyl-aspartate (NAA), suggesting that there is anaerobic glycolysis, plasma membrane damage, and altered pH preferentially in the spinal cord of chronic morphine-treated rats.
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Papers by Terence Coderre