2024
Allergic Contact Dermatitis: A Model of Inflammatory Itch and Pain in Human and Mouse
LaMotte R. Allergic Contact Dermatitis: A Model of Inflammatory Itch and Pain in Human and Mouse. 2024, 23-32. DOI: 10.1007/978-981-99-8921-8_2.Peer-Reviewed Original ResearchSquaric acid dibutyl esterAllergic contact dermatitisPersistent itchingPathogenesis of allergic contact dermatitisPain-like behaviorsMechanically evoked itchMechanisms of itchPeripheral neural mechanismsClinically significant problemReceptor CXCR3Excitatory responsesIP-10Chemokine CXCL10In vivo recordingsCutaneous sitesLocal inflammationSpontaneous activityPruritic disordersAnimal modelsPainTopical applicationItchingItch disordersMiceTherapeutic targetItch and Pain Behaviors in Irritant Contact Dermatitis Produced by Sodium Lauryl Sulfate in Mice
Malewicz-Oeck N, Zhang Z, Shimada S, LaMotte R. Itch and Pain Behaviors in Irritant Contact Dermatitis Produced by Sodium Lauryl Sulfate in Mice. International Journal Of Molecular Sciences 2024, 25: 7718. PMID: 39062959, PMCID: PMC11276812, DOI: 10.3390/ijms25147718.Peer-Reviewed Original ResearchIrritant contact dermatitisDay 1Heat stimuliSkin inflammationSigns of spontaneous painContact dermatitisHyperalgesia-like behaviorResponses to pruritogensPain-like behaviorsSodium lauryl sulfateCompared to salineMeasurement of skin thicknessSpontaneous painIncreased skin thicknessHistamine-dependentPain behaviorCutaneous inflammationScratching boutsMouse modelPainSkin thicknessItchingInflammationMiceDay 0
2016
Allergic Contact Dermatitis: A Model of Inflammatory Itch and Pain in Human and Mouse
LaMotte RH. Allergic Contact Dermatitis: A Model of Inflammatory Itch and Pain in Human and Mouse. Advances In Experimental Medicine And Biology 2016, 904: 23-32. PMID: 26900060, PMCID: PMC4910628, DOI: 10.1007/978-94-017-7537-3_2.Peer-Reviewed Original ResearchConceptsAllergic contact dermatitisPersistent itchPathogenesis of ACDSquaric acid dibutyl esterPain-like behaviorsSmall-diameter neuronsPeripheral neural mechanismsPossible therapeutic targetInflammatory itchPruritic disordersCutaneous sitesChemokine CXCL10Excitatory responsesLocal inflammationReceptor CXCR3Contact dermatitisUnmyelinated axonsSpontaneous activityTherapeutic targetAnimal modelsPainSubsequent challengeTopical applicationItchMice
2008
Behavioral differentiation between itch and pain in mouse
Shimada SG, LaMotte RH. Behavioral differentiation between itch and pain in mouse. Pain 2008, 139: 681-687. PMID: 18789837, PMCID: PMC2723192, DOI: 10.1016/j.pain.2008.08.002.Peer-Reviewed Original Research
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 studiesEnhancement of experimental pruritus and mechanically evoked dysesthesiae with local anesthesia
Atanassoff P, Brull S, Zhang J, Greenquist K, Silverman D, Lamotte R. Enhancement of experimental pruritus and mechanically evoked dysesthesiae with local anesthesia. Somatosensory & Motor Research 1999, 16: 291-298. PMID: 10632026, DOI: 10.1080/08990229970357.Peer-Reviewed Original ResearchConceptsAreas of dysesthesiaDuration of itchHistamine-evoked itchPrimary afferent neuronsAbnormal sensationAfferent neuronsCutaneous areaCentral inhibitionLocal anesthesiaEnhanced painControl armIntradermal injectionLocal anestheticsExperimental pruritusPainItchVolar forearmHistamineMechanical stimulationAfferentsHuman subjectsAnestheticsSkinPresent studySensation
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
Subpopulations of “nocifensor neurons” contributing to pain and allodynia, itch and alloknesis
LaMotte R. Subpopulations of “nocifensor neurons” contributing to pain and allodynia, itch and alloknesis. Journal Of Pain 1992, 1: 115-126. DOI: 10.1016/1058-9139(92)90040-j.Peer-Reviewed Original ResearchSpinothalamic tract cellsDorsal hornTract cellsNociceptive primary afferent neuronsPrimary afferent neuronsPrimary sensory neuronsCentral nervous systemNon-neuronal tissuesAfferent neuronsCutaneous mechanoreceptive afferentsPrimary afferentsConvergent inputsDifferent populationsPeripheral tissuesSensory neuronsPainCutaneous injuryNervous systemMechanoreceptive afferentsNoxious eventsProlonged enhancementNeuronsItchAllodyniaAlloknesisCentral 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: 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
1988
Chapter 39 Psychophysical and neurophysiological studies of chemically induced cutaneous pain and itch The case of the missing nociceptor
LaMotte R. Chapter 39 Psychophysical and neurophysiological studies of chemically induced cutaneous pain and itch The case of the missing nociceptor. Progress In Brain Research 1988, 74: 331-335. PMID: 3187041, DOI: 10.1016/s0079-6123(08)63033-2.Peer-Reviewed Original ResearchConceptsCutaneous painInjection siteNeurophysiological studiesPeripheral nerve fibersSensation of painCapsaicin painInjection painMechanical hyperesthesiaHeat hyperalgesiaHeat nociceptorsIntradermal injectionCutaneous receptorsNerve fibersHistamine dihydrochloridePainNociceptorsCapsaicinGreater painItchAllodyniaHyperesthesiaFurther investigationCandidate mechanismInjectionSensation
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 correlatesThe 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
Psychophysical detection and pain ratings of incremental thermal stimuli: A comparison with nociceptor responses in humans
Robinson C, Torebjörk H, LaMotte R. Psychophysical detection and pain ratings of incremental thermal stimuli: A comparison with nociceptor responses in humans. Brain Research 1983, 274: 87-106. PMID: 6616259, DOI: 10.1016/0006-8993(83)90523-1.Peer-Reviewed Original ResearchConceptsMagnitude of painThermal stimuliContact thermal stimulatorMost nociceptorsNociceptive afferentsPeroneal nerveNociceptor responsesPain magnitudePain ratingsPain sensitivityPain sensationUnmyelinated fibersPainNormal skinMild burnsPsychophysical detectionDegrees CNeural responsesNociceptorsAfferentsThermal stimulatorCapacity of humansIncrement detectionDegrees C.Detection thresholdPeripheral 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 ResearchLatency to detection of first pain
Campbell J, LaMotte R. Latency to detection of first pain. Brain Research 1983, 266: 203-208. PMID: 6871657, DOI: 10.1016/0006-8993(83)90650-9.Peer-Reviewed Original ResearchConceptsFirst painFirst sensationShort-latency responsesQuality of sensationDistal forearmPrimary afferentsPain sensationConduction velocityThenar eminenceGlabrous handHeat stimuliPainLatency responsesMedian response latencyShort latencyDistal armSensationResponse latencyStimuliSubjectsLatencyAfferentsArmForearmMs
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 ResearchPeripheral 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