2023
Ventral tegmental area M5 muscarinic receptors mediate effort-choice responding and nucleus accumbens dopamine in a sex-specific manner
Nunes E, Kebede N, Haight J, Foster D, Lindsley C, Conn P, Addy N. Ventral tegmental area M5 muscarinic receptors mediate effort-choice responding and nucleus accumbens dopamine in a sex-specific manner. Journal Of Pharmacology And Experimental Therapeutics 2023, 385: jpet-ar-2022-001438. PMID: 36828630, PMCID: PMC10108441, DOI: 10.1124/jpet.122.001438.Peer-Reviewed Original ResearchConceptsNucleus accumbens coreVentral tegmental areaM5 receptorsDA releaseMale ratsVTA infusionsDepressive disorderNucleus accumbensMuscarinic M5 receptorsSelective negative allosteric modulatorM5 muscarinic receptorsNegative allosteric modulatorsEffort-related choicePhasic DA releasePotential sex differencesSex-specific mannerACh toneVTA administrationCholinergic effectsMuscarinic receptorsFemale ratsTegmental areaPreclinical modelsDopamine releaseTherapeutic target
2022
Chronic oral nicotine exposure decreases aversive taste of nicotine, increases nicotine withdrawal and reinstatement, but cherry flavor does not alter nicotine’s effects in adolescent rats
Bagdas D, Harris L, Addy N. Chronic oral nicotine exposure decreases aversive taste of nicotine, increases nicotine withdrawal and reinstatement, but cherry flavor does not alter nicotine’s effects in adolescent rats. Neuroscience Letters 2022, 793: 137008. PMID: 36476758, PMCID: PMC9948648, DOI: 10.1016/j.neulet.2022.137008.Peer-Reviewed Original ResearchConceptsTaste responsesNicotine concentrationsNicotine exposureNicotine withdrawalNicotine effectsAdolescent ratsChronic exposureOral nicotine exposureTaste reactivityAversive tasteChronic nicotine exposureDevelopment of toleranceLow nicotine concentrationsE-cigarette useE-cigarette flavoringsHigher nicotine concentrationsNicotine abstinenceNicotine useNaïve animalsChronic effectsNicotineRatsAversive responsesDifferent nicotine concentrationsWithdrawal
2020
Examining the role of muscarinic M5 receptors in VTA cholinergic modulation of depressive-like and anxiety-related behaviors in rats
Nunes EJ, Rupprecht LE, Foster DJ, Lindsley CW, Conn PJ, Addy NA. Examining the role of muscarinic M5 receptors in VTA cholinergic modulation of depressive-like and anxiety-related behaviors in rats. Neuropharmacology 2020, 171: 108089. PMID: 32268153, PMCID: PMC7313677, DOI: 10.1016/j.neuropharm.2020.108089.Peer-Reviewed Original ResearchConceptsSucrose preference testVentral tegmental areaMuscarinic M5 receptorsCholinergic toneM5 receptorsBehavioral effectsFemale ratsDepressive-like behavioral effectsIntra-VTA infusionAnxiogenic-like effectsAcetylcholinesterase inhibitor physostigmineAnxiety-related behaviorVTA administrationCholinergic modulationCholinergic receptorsMuscarinic receptorsInhibitor physostigmineSwim testTegmental areaMale ratsMood disordersVTA infusionsFST behaviorRatsPhysostigmine
2002
Hippocampal α7 and α4β2 nicotinic receptors and working memory
Levin E, Bradley A, Addy N, Sigurani N. Hippocampal α7 and α4β2 nicotinic receptors and working memory. Neuroscience 2002, 109: 757-765. PMID: 11927157, DOI: 10.1016/s0306-4522(01)00538-3.Peer-Reviewed Original ResearchConceptsDH beta EAlpha 7 nicotinic receptorAlpha 4 beta 2Ventral hippocampusNicotinic receptorsLow dosesBeta EReference memory errorsCounter-balanced orderRadial mazeHigh dosesAdult female Sprague-Dawley ratsFemale Sprague-Dawley ratsNicotine-induced memory improvementAcute intrahippocampal infusionsVentral hippocampal infusionsBeta 2Nicotinic receptor blockadeNicotinic receptor agonistsSprague-Dawley ratsΑ4β2 nicotinic receptorsSignificant increaseChronic guide cannulaeHippocampal α7Nicotinic involvement
2001
Persistent behavioral consequences of neonatal chlorpyrifos exposure in rats
Levin E, Addy N, Nakajima A, Christopher N, Seidler F, Slotkin T. Persistent behavioral consequences of neonatal chlorpyrifos exposure in rats. Brain Research 2001, 130: 83-89. PMID: 11557096, DOI: 10.1016/s0165-3806(01)00215-2.Peer-Reviewed Original ResearchConceptsFigure-8 apparatusPostnatal CPF exposureCPF exposureEarly neonatal exposureMuscarinic cholinergic controlNeonatal chlorpyrifos exposurePersistent behavioral effectsRadial mazeT-mazeNicotinic cholinergic antagonistBrain cell developmentReference memory impairmentRadial arm mazeReference memory errorsPNDs 11Neonatal exposurePND 1Muscarinic antagonistNeonatal periodCholinergic antagonistsCholinergic controlNeurochemical changesRate of habituationCPF groupLong-term effects