1999
Plasticity of sodium channel expression in DRG neurons in the chronic constriction injury model of neuropathic pain
Dib-Hajj S, Fjell J, Cummins TR, Zheng Z, Fried K, LaMotte R, Black JA, Waxman S. Plasticity of sodium channel expression in DRG neurons in the chronic constriction injury model of neuropathic pain. Pain 1999, 83: 591-600. PMID: 10568868, DOI: 10.1016/s0304-3959(99)00169-4.Peer-Reviewed Original ResearchConceptsTTX-R sodium channelsChronic constriction injury modelDRG neuronsSodium currentSodium channelsNeuropathic painInjury modelAxotomized dorsal root ganglion (DRG) neuronsSmall-diameter DRG neuronsTTX-R sodium currentsDorsal root ganglion neuronsTTX-S currentsSodium channel expressionGanglion neuronsSciatic nerveChannel expressionSodium channel transcriptsNeuronsNa currentPainChannel transcriptsSignificant changesLevels of transcriptsHyperalgesiaPrevious studiesEnhanced Excitability of Sensory Neurons in Rats With Cutaneous Hyperalgesia Produced by Chronic Compression of the Dorsal Root Ganglion
Zhang J, Song X, LaMotte R. Enhanced Excitability of Sensory Neurons in Rats With Cutaneous Hyperalgesia Produced by Chronic Compression of the Dorsal Root Ganglion. Journal Of Neurophysiology 1999, 82: 3359-3366. PMID: 10601467, DOI: 10.1152/jn.1999.82.6.3359.Peer-Reviewed Original ResearchConceptsDorsal root gangliaControl ratsCutaneous hyperalgesiaDRG cellsRoot gangliaSpontaneous activityChronic mechanical compressionCCD cellsAction potential thresholdDRG somataChronic compressionChronic painContralateral footSham operationElectrophysiological changesSpinal injuryIntracellular recordingsPunctate stimulationSensory pathologySensory neuronsIntervertebral foraminaIntrinsic alterationsElectrophysiological propertiesPlantar surfaceHyperalgesiaAttenuation of experimental pruritus and mechanically evoked dysesthesiae in an area of cutaneous allodynia
Brull S, Atanassoff P, Silverman D, Zhang J, Lamotte R. Attenuation of experimental pruritus and mechanically evoked dysesthesiae in an area of cutaneous allodynia. Somatosensory & Motor Research 1999, 16: 299-303. PMID: 10632027, DOI: 10.1080/08990229970366.Peer-Reviewed Original ResearchConceptsIntradermal injectionTactile allodyniaNociceptive primary afferent neuronsArea of allodyniaAreas of whealCapsaicin-induced allodyniaPrimary afferent neuronsCutaneous hyperalgesiaCutaneous allodyniaAfferent neuronsExperimental armControl armAllodyniaExperimental pruritusDysesthesiaeOpposite forearmVolar surfaceAlloknesisHuman volunteersItchHistamineHyperknesisHyperalgesiaInhibitory processesWheal
1996
Reduction of Postburn Hyperalgesia after Local Injection of Ketorolac in Healthy Volunteers
Lundell J, Silverman D, Brull S, O'Connor T, Kitahata L, Collins J, LaMotte R. Reduction of Postburn Hyperalgesia after Local Injection of Ketorolac in Healthy Volunteers. Anesthesiology 1996, 84: 502-509. PMID: 8659776, DOI: 10.1097/00000542-199603000-00003.Peer-Reviewed Original ResearchConceptsHealthy volunteersEffect of pretreatmentNonsteroidal antiinflammatory drugsSystemic side effectsBradykinin-induced hyperalgesiaContact thermal stimulatorRepeated-measures analysisInflammatory painBradykinin injectionPain intensityPain thresholdAntiinflammatory drugsLocal injectionHyperalgesiaSide effectsKetorolacDrug AdministrationPainMild burnsThermal stimuliThermal stimulatorInjurySelective effectInjectionSaline
1992
Central changes in processing of mechanoreceptive input in capsaicin‐induced secondary hyperalgesia in humans.
Torebjörk H, Lundberg L, LaMotte R. Central changes in processing of mechanoreceptive input in capsaicin‐induced secondary hyperalgesia in humans. The Journal Of Physiology 1992, 448: 765-780. PMID: 1593489, PMCID: PMC1176227, DOI: 10.1113/jphysiol.1992.sp019069.Peer-Reviewed Original ResearchConceptsMechanical hyperalgesiaCapsaicin injectionIntraneural microstimulationMechanoreceptive inputCapsaicin-induced secondary hyperalgesiaCutaneous innervation territoryArea of hyperalgesiaHealthy human subjectsSecondary hyperalgesiaAlgesic substancesLidocaine anesthesiaInnervation territoryIntense painIntradermal injectionUnmyelinated fibersHyperalgesiaMyelinated fibersC-fibersCentral changesPainAfferent signalsImpulse conductionSuprathreshold stimulationSkin areasTactile sensation
1991
Neurogenic hyperalgesia: the search for the primary cutaneous afferent fibers that contribute to capsaicin-induced pain and hyperalgesia
Baumann T, Simone D, Shain C, LaMotte R. Neurogenic hyperalgesia: the search for the primary cutaneous afferent fibers that contribute to capsaicin-induced pain and hyperalgesia. Journal Of Neurophysiology 1991, 66: 212-227. PMID: 1919668, DOI: 10.1152/jn.1991.66.1.212.Peer-Reviewed Original ResearchConceptsAfferent fibersNeurogenic hyperalgesiaPrimary hyperalgesiaNociceptive fibersPrimary afferentsIntradermal injectionHeat stimuliInjection siteReceptive fieldsCutaneous primary afferent fibersCapsaicin injection siteCutaneous afferent fibersNociceptive afferent fibersInjection of capsaicinCapsaicin-induced painPrimary afferent fibersPeripheral nervous systemPeripheral neural mechanismsArea of skinCapsaicin painSecondary hyperalgesiaDepressed responsivenessCapsaicin injectionIntense painHyperalgesiaNeurogenic hyperalgesia: central neural correlates in responses of spinothalamic tract neurons
Simone D, Sorkin L, Oh U, Chung J, Owens C, LaMotte R, Willis W. Neurogenic hyperalgesia: central neural correlates in responses of spinothalamic tract neurons. Journal Of Neurophysiology 1991, 66: 228-246. PMID: 1919669, DOI: 10.1152/jn.1991.66.1.228.Peer-Reviewed Original ResearchConceptsSpinothalamic tract neuronsSTT neuronsWDR neuronsInjection siteHT neuronsNeurogenic hyperalgesiaTract neuronsIntradermal injectionPunctate stimuliCapsaicin injection siteMicrograms of capsaicinInjection of capsaicinCutaneous mechanical stimulationInjection of vehicleCentral neural correlatesSuprathreshold heat stimuliCutaneous hyperalgesiaWDR cellsCapsaicin injectionHeat painHyperalgesiaPainAnesthetized monkeysPreinjection valuesHeat stimuli
1989
Sensitization of cat dorsal horn neurons to innocuous mechanical stimulation after intradermal injection of capsaicin
Simone D, Baumann T, Collins J, LaMotte R. Sensitization of cat dorsal horn neurons to innocuous mechanical stimulation after intradermal injection of capsaicin. Brain Research 1989, 486: 185-189. PMID: 2720428, DOI: 10.1016/0006-8993(89)91293-6.Peer-Reviewed Original Research
1987
Hyperalgesia to heat after intradermal injection of capsaicin
Simone D, Ngeow J, Putterman G, LaMotte R. Hyperalgesia to heat after intradermal injection of capsaicin. Brain Research 1987, 418: 201-203. PMID: 3664271, DOI: 10.1016/0006-8993(87)90982-6.Peer-Reviewed Original Research
1984
The Role of C-Nociceptors in Cutaneous Heat Pain and Hyperalgesia
Lamotte R. The Role of C-Nociceptors in Cutaneous Heat Pain and Hyperalgesia. Wenner-Gren Symposium 1984, 363-377. DOI: 10.1007/978-1-349-07292-7_26.Peer-Reviewed Original ResearchThe Role of C-Nociceptors in Cutaneous Heat Pain and Hyperalgesia
Lamotte R. The Role of C-Nociceptors in Cutaneous Heat Pain and Hyperalgesia. Ettore Majorana International Science Series 1984, 363-377. DOI: 10.1007/978-1-4613-2807-0_26.Peer-Reviewed Original ResearchCutaneous heat painHeat painCutaneous nociceptorsHeat pain thresholdNoxious heat stimuliSensation of painPeripheral neural mechanismsHeat injuryC-nociceptorsNociceptor responsesPain thresholdAfferent fibersCutaneous receptorsPainCutaneous injuryHeat stimuliHyperalgesiaNociceptorsNeurophysiological studiesInjuryNeural mechanismsMagnitude ratingsPsychophysical studiesStimuliStudy
1983
Peripheral neural correlates of magnitude of cutaneous pain and hyperalgesia: a comparison of neural events in monkey with sensory judgments in human
LaMotte R, Thalhammer J, Robinson C. Peripheral neural correlates of magnitude of cutaneous pain and hyperalgesia: a comparison of neural events in monkey with sensory judgments in human. Journal Of Neurophysiology 1983, 50: 1-26. PMID: 6875640, DOI: 10.1152/jn.1983.50.1.1.Peer-Reviewed Original Research
1982
Peripheral neural mechanisms of cutaneous hyperalgesia following mild injury by heat
LaMotte R, Thalhammer J, Torebjörk H, Robinson C. Peripheral neural mechanisms of cutaneous hyperalgesia following mild injury by heat. Journal Of Neuroscience 1982, 2: 765-781. PMID: 7086482, PMCID: PMC6564351, DOI: 10.1523/jneurosci.02-06-00765.1982.Peer-Reviewed Original ResearchConceptsConditioning stimulusCutaneous hyperalgesiaMild injuryDevelopment of hyperalgesiaHeat injuryMagnitude of hyperalgesiaMild heat injurySingle conditioning stimulusMagnitude of sensitizationPeripheral neural mechanismsReceptive fieldsPeroneal nervePeripheral determinantsCutaneous receptorsC-fibersAwake humansConduction blockAnesthetized monkeysHyperalgesiaNociceptorsPainGlabrous skinNormal skinInjuryHeat stimulation