2022
Persistent sensory changes and sex differences in transgenic mice conditionally expressing HIV-1 Tat regulatory protein
Toma W, Paris J, Warncke U, Nass S, Caillaud M, McKiver B, Ondo O, Bagdas D, Bigbee J, Knapp P, Hauser K, Damaj M. Persistent sensory changes and sex differences in transgenic mice conditionally expressing HIV-1 Tat regulatory protein. Experimental Neurology 2022, 358: 114226. PMID: 36096180, PMCID: PMC10053560, DOI: 10.1016/j.expneurol.2022.114226.Peer-Reviewed Original ResearchConceptsSensory neuropathyFemale miceHIV-1Tat expressionSensory nerve action potentialsIntraepidermal nerve fiber densityChronic HIV-1Persistent sensory changesPain-like behaviorsPeripheral sensory neuropathySevere chronic painDevelopment of neuropathyNerve fiber densityLumbar spinal cordDevelopment of hypersensitivityNerve action potentialsPrevious preclinical studiesDorsal root gangliaTNF-α expressionPPAR-α gene expressionTat regulatory proteinRole of TatHIV-1 TatSex differencesAllodynic responses
2020
Impact of menthol on nicotine intake and preference in mice: Concentration, sex, and age differences
Bagdas D, Jackson A, Carper M, Chen RY, Akinola LS, Damaj MI. Impact of menthol on nicotine intake and preference in mice: Concentration, sex, and age differences. Neuropharmacology 2020, 179: 108274. PMID: 32827516, PMCID: PMC7572603, DOI: 10.1016/j.neuropharm.2020.108274.Peer-Reviewed Original ResearchConceptsOral nicotine consumptionEffect of mentholImpact of mentholNicotine consumptionFemale miceNicotine intakeΑ7 nicotinic acetylcholine receptorMenthol concentrationNicotine solutionHigher nicotine intakeAdolescent female miceMale C57BL/6J miceTwo-bottle choice paradigmWild-type miceNicotinic acetylcholine receptorsConcentration-dependent mannerOral nicotineC57BL/6J miceKO miceMale miceType miceMouse modelAcetylcholine receptorsHigh menthol concentrationAdult counterpartsConditional expression of HIV‐1 tat in the mouse alters the onset and progression of tonic, inflammatory and neuropathic hypersensitivity in a sex‐dependent manner
Bagdas D, Paris J, Carper M, Wodarski R, Rice A, Knapp P, Hauser K, Damaj M. Conditional expression of HIV‐1 tat in the mouse alters the onset and progression of tonic, inflammatory and neuropathic hypersensitivity in a sex‐dependent manner. European Journal Of Pain 2020, 24: 1609-1623. PMID: 32533878, PMCID: PMC7856573, DOI: 10.1002/ejp.1618.Peer-Reviewed Original ResearchConceptsHIV-1 TatSex-dependent mannerFemale miceMechanical hypersensitivityAdjuvant injectionThermal hypersensitivityNeurotoxic HIV-1 regulatory proteinComplete Freund's adjuvant injectionChronic constrictive nerve injuryHIV sensory neuropathyNeuropathic nociceptive behaviorMagnitude of inflammationFreund's adjuvant injectionPeripheral nervous systemHIV-1 regulatory proteinHIV-1 proteinsAbility of TatSex differencesSequel of eventsNeuropathic hypersensitivityTat miceNerve injuryFormalin injectionPeripheral neuropathySensory neuropathy
2019
Assessing nicotine dependence using an oral nicotine free-choice paradigm in mice
Bagdas D, Diester C, Riley J, Carper M, Alkhlaif Y, AlOmari D, Alayoubi H, Poklis J, Damaj M. Assessing nicotine dependence using an oral nicotine free-choice paradigm in mice. Neuropharmacology 2019, 157: 107669. PMID: 31220484, PMCID: PMC6697382, DOI: 10.1016/j.neuropharm.2019.107669.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBehavior, AddictiveChoice BehaviorDose-Response Relationship, DrugDrug InteractionsFemaleMaleMiceMice, KnockoutNicotineNucleus AccumbensQuinineReceptors, NicotinicSelf AdministrationSex CharacteristicsSubstance Withdrawal SyndromeTobacco Use DisorderTyrosine 3-MonooxygenaseVareniclineConceptsAddictive-like propertiesNicotine intakeOral nicotine consumptionNicotine consumptionFree-choice paradigmNicotine solutionΑ6 KO miceTwo-bottle free-choice paradigmTyrosine hydroxylase levelsNicotinic acetylcholine receptor subunitsPartial agonist vareniclineOral nicotine intakeAbsence of nicotineAcetylcholine receptor subunitsΑ5 nAChRAdult C57BL/6JNicotine withdrawalKO miceFemale miceAgonist vareniclineDBA/2J miceHydroxylase levelsNicotine dependenceBinge drinkingObserved sex differences
2018
Reduced intraepidermal nerve fibre density, glial activation, and sensory changes in HIV type-1 Tat-expressing female mice
Wodarski R, Bagdas D, Paris J, Pheby T, Toma W, Xu R, Damaj M, Knapp P, Rice A, Hauser K. Reduced intraepidermal nerve fibre density, glial activation, and sensory changes in HIV type-1 Tat-expressing female mice. PAIN Reports 2018, 3: e654. PMID: 29922746, PMCID: PMC5999412, DOI: 10.1097/pr9.0000000000000654.Peer-Reviewed Original ResearchIntraepidermal nerve fiber densityDorsal root gangliaNerve fiber densitySensory neuropathyTAT inductionHIV infectionFiber densityFemale miceSpinal cordHIV type 1 (HIV-1) TatIba-1-positive cellsLumbar dorsal root gangliaGlial fibrillary acidic protein immunoreactivityGlial fibrillary acidic protein promoterClinical HIV infectionPaw withdrawal thresholdPaw withdrawal latencyChronic pain statesSpontaneous motor activityImmune cell activationAcidic protein promoterPainful HIVGlial activationPaw withdrawalWithdrawal threshold
2016
Sex Differences and Drug Dose Influence the Role of the α7 Nicotinic Acetylcholine Receptor in the Mouse Dextran Sodium Sulfate-Induced Colitis Model
AlSharari S, Bagdas D, Akbarali H, Lichtman P, Raborn E, Cabral G, Carroll F, McGee E, Damaj M. Sex Differences and Drug Dose Influence the Role of the α7 Nicotinic Acetylcholine Receptor in the Mouse Dextran Sodium Sulfate-Induced Colitis Model. Nicotine & Tobacco Research 2016, 19: 460-468. PMID: 27639096, PMCID: PMC6894014, DOI: 10.1093/ntr/ntw245.Peer-Reviewed Original ResearchConceptsΑ7 nicotinic acetylcholine receptorWild-type miceColitis severityNicotinic acetylcholine receptorsFemale miceHigher tumor necrosis factor-alpha levelsAcetylcholine receptorsTumor necrosis factor-alpha levelsNecrosis factor-alpha levelsLittermate wild-type miceAnti-colitis activityAnti-colitis effectΑ7 knockout miceDextran sodium sulfatePathogenesis of colitisAnti-inflammatory effectsFemale adult miceViable therapeutic approachSeverity of diseaseSex differencesColon lengthDisease activityColonic levelsColitis modelUlcerative colitis