2012
A subpopulation of nociceptors specifically linked to itch
Han L, Ma C, Liu Q, Weng HJ, Cui Y, Tang Z, Kim Y, Nie H, Qu L, Patel KN, Li Z, McNeil B, He S, Guan Y, Xiao B, LaMotte RH, Dong X. A subpopulation of nociceptors specifically linked to itch. Nature Neuroscience 2012, 16: 174-182. PMID: 23263443, PMCID: PMC3557753, DOI: 10.1038/nn.3289.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAnimalsAntirheumatic AgentsCalciumCapsaicinCells, CulturedChloroquineEpidermisGanglia, SpinalGene Expression RegulationGreen Fluorescent ProteinsHistamineHot TemperatureMaleMiceMice, Inbred C57BLMice, TransgenicMotor ActivityNerve FibersNerve Tissue ProteinsNociceptorsPain MeasurementPain ThresholdPatch-Clamp TechniquesPeptide FragmentsPlant LectinsProteinsProto-Oncogene Proteins c-fosPruritusReceptors, BombesinReceptors, G-Protein-CoupledRNA, UntranslatedRotarod Performance TestSensory Receptor CellsSensory System AgentsSpinal CordTRPV Cation Channels
1999
Mechanical and Thermal Hyperalgesia and Ectopic Neuronal Discharge After Chronic Compression of Dorsal Root Ganglia
Song X, Hu S, Greenquist K, Zhang J, LaMotte R. Mechanical and Thermal Hyperalgesia and Ectopic Neuronal Discharge After Chronic Compression of Dorsal Root Ganglia. Journal Of Neurophysiology 1999, 82: 3347-3358. PMID: 10601466, DOI: 10.1152/jn.1999.82.6.3347.Peer-Reviewed Original ResearchConceptsDorsal root gangliaChronic compressionAcute injuryRoot gangliaPreoperative valuesPostoperative testingFoot withdrawalSpontaneous dischargeIntact sympathetic nervous systemUnmyelinated peripheral nerve fibersEctopic neuronal dischargesEctopic spontaneous dischargesSympathetic nervous systemLow back painPeripheral nerve fibersDorsal root fibersBlood-borne chemicalsExtracellular electrophysiological recordingsActive myelinated fibersCotton wispNonsurgical ratsMechanical hyperalgesiaEctopic dischargesThermal hyperalgesiaBack pain
1997
An in vitro study of ectopic discharge generation and adrenergic sensitivity in the intact, nerve-injured rat dorsal root ganglion
Zhang J, Song X, LaMotte R. An in vitro study of ectopic discharge generation and adrenergic sensitivity in the intact, nerve-injured rat dorsal root ganglion. Pain 1997, 72: 51-57. PMID: 9272787, DOI: 10.1016/s0304-3959(97)00013-4.Peer-Reviewed Original ResearchConceptsDorsal root gangliaNerve-injured ratsAdrenergic sensitivitySpontaneous activityUninjured nerveDRG cellsRoot gangliaSciatic nerveL5 dorsal root gangliaIntact dorsal root gangliaSelective alpha2-adrenergic agonistRat dorsal root gangliaAbnormal spontaneous activityInjured DRG neuronsSympathetic nervous systemAlpha2-adrenergic agonistDorsal root fibersIntact blood circulationCutaneous hyperalgesiaSpontaneous painDRG neuronsDorsal rootsSpontaneous dischargeC-fibersPeripheral axons
1995
Functional changes in dorsal root ganglion cells after chronic nerve constriction in the rat
Xie Y, Zhang J, Petersen M, LaMotte R. Functional changes in dorsal root ganglion cells after chronic nerve constriction in the rat. Journal Of Neurophysiology 1995, 73: 1811-1820. PMID: 7623082, DOI: 10.1152/jn.1995.73.5.1811.Peer-Reviewed Original ResearchConceptsDorsal root gangliaChronic nerve constrictionMost C-fibersC-fibersNerve constrictionSpontaneous activityInjury siteDRG somataDorsal rootsDorsal root ganglion cellsNerve-injured ratsIpsilateral sciatic nerveL5 dorsal rootAlpha 2 receptorsEffects of norepinephrineDorsal root fibersThermal stimuliUninjured neuronsUninjured ratsNerve injurySympathetic trunkUninjured nerveSympathetic stimulationCutaneous painExcitatory responses
1993
Responses of cutaneous mechanoreceptors to the shape of objects applied to the primate fingerpad
LaMotte R, Srinivasan M. Responses of cutaneous mechanoreceptors to the shape of objects applied to the primate fingerpad. Acta Psychologica 1993, 84: 41-51. PMID: 8237455, DOI: 10.1016/0001-6918(93)90071-x.Peer-Reviewed Original Research
1991
Neurogenic hyperalgesia: psychophysical studies of underlying mechanisms
LaMotte R, Shain C, Simone D, Tsai E. Neurogenic hyperalgesia: psychophysical studies of underlying mechanisms. Journal Of Neurophysiology 1991, 66: 190-211. PMID: 1919666, DOI: 10.1152/jn.1991.66.1.190.Peer-Reviewed Original ResearchConceptsInjection of capsaicinMechanical hyperalgesiaNerve fibersInjection siteAlgesic substancesPrimary afferent nerve fibersArea of tendernessCapsaicin injection siteMicrograms of capsaicinNociceptive nerve fibersPeripheral neural activityArea of hyperalgesiaCutaneous nerve fibersAfferent nerve fibersMagnitude of painSingle intradermal injectionNeural activityArea of analgesiaSite of injuryLarger mean areaAnesthetized skinNeurogenic hyperalgesiaCutaneous anesthesiaIntradermal injectionPainful stimuliNeurogenic 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 painHyperalgesia
1984
Time-intensity profiles of cutaneous pain in normal and hyperalgesic skin: a comparison with C-fiber nociceptor activities in monkey and human
LaMotte R, Torebjörk H, Robinson C, Thalhammer J. Time-intensity profiles of cutaneous pain in normal and hyperalgesic skin: a comparison with C-fiber nociceptor activities in monkey and human. Journal Of Neurophysiology 1984, 51: 1434-1450. PMID: 6737035, DOI: 10.1152/jn.1984.51.6.1434.Peer-Reviewed Original ResearchConceptsNociceptive afferent fibersDevelopment of hyperalgesiaConditioning stimulusPain ratingsHeat stimulationAfferent fibersHairy skinHeat-evoked dischargesCervical spinal cordMagnitude of painMild heat injurySimilar response magnitudesMean frequencyPoststimulus time histogramsNociceptor activityCutaneous painResponse latencyHyperalgesic skinSpinal cordAwake humansC-fibersAnesthetized monkeysConduction velocityPainHeat stimuliPeripheral neural correlates of magnitude of cutaneous pain and hyperalgesia: simultaneous recordings in humans of sensory judgments of pain and evoked responses in nociceptors with C-fibers
Torebjörk H, LaMotte R, Robinson C. Peripheral neural correlates of magnitude of cutaneous pain and hyperalgesia: simultaneous recordings in humans of sensory judgments of pain and evoked responses in nociceptors with C-fibers. Journal Of Neurophysiology 1984, 51: 325-339. PMID: 6707724, DOI: 10.1152/jn.1984.51.2.325.Peer-Reviewed Original ResearchConceptsConditioning stimulusIntensity-response functionsNormal skinMost subjectsC-mechanoheat nociceptorsPeripheral neural correlateHeat pain sensationMild heat injuryMagnitude ratingsReceptive fieldsHeat injurySupra-threshold stimuliShort-duration stimuliPain thresholdCutaneous painHeat painPain sensationC-fibersPainNociceptorsHairy skinUninjured skinHeat stimulationMagnitude of responseNeuronal correlates
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
Response properties of high-threshold cutaneous cold receptors in the primate
LaMotte R, Thalhammer J. Response properties of high-threshold cutaneous cold receptors in the primate. Brain Research 1982, 244: 279-287. PMID: 7116176, DOI: 10.1016/0006-8993(82)90086-5.Peer-Reviewed Original Research