2007
Population-specific effects of the Asn40Asp polymorphism at the μ-opioid receptor gene (OPRM1) on HPA-axis activation
Hernandez-Avila CA, Covault J, Wand G, Zhang H, Gelernter J, Kranzler HR. Population-specific effects of the Asn40Asp polymorphism at the μ-opioid receptor gene (OPRM1) on HPA-axis activation. Pharmacogenetics And Genomics 2007, 17: 1031-1038. PMID: 18004207, DOI: 10.1097/fpc.0b013e3282f0b99c.Peer-Reviewed Original ResearchMeSH KeywordsAdrenocorticotropic HormoneAdultAllelesAmino Acid SubstitutionAsian PeopleDouble-Blind MethodFemaleGenetics, PopulationGenotypeHumansHydrocortisoneHypothalamo-Hypophyseal SystemMaleNaloxonePharmacogeneticsPituitary-Adrenal SystemPolymorphism, Single NucleotideReceptors, Opioid, muWhite PeopleConceptsHPA axis activationCortisol responseAsn40 homozygotesAsn40Asp polymorphismAsp40 alleleSingle nucleotide polymorphism A118GHPA axis responsePlacebo-controlled administrationΜ-opioid receptor geneGreater cortisol responseIntravenous naloxoneOpioid blockadeAxis activationAdrenocorticotropic hormoneA118GHealthy individualsOPRM1 SNPsNaloxoneCortisol concentrationsHormonal responsesEuropean AmericansObserved associationsHealthy participantsWhole bloodReceptor gene
2003
A Functional Polymorphism of the μ-Opioid Receptor Gene is Associated with Naltrexone Response in Alcohol-Dependent Patients
Oslin DW, Berrettini W, Kranzler HR, Pettinati H, Gelernter J, Volpicelli JR, O'Brien CP. A Functional Polymorphism of the μ-Opioid Receptor Gene is Associated with Naltrexone Response in Alcohol-Dependent Patients. Neuropsychopharmacology 2003, 28: 1546-1552. PMID: 12813472, DOI: 10.1038/sj.npp.1300219.Peer-Reviewed Original ResearchConceptsΜ-opioid receptorAlcohol-dependent patientsAbstinence ratesPlacebo-controlled clinical trialOverall abstinence ratesΜ-receptor antagonistWeeks of treatmentΜ-opioid receptor geneAlcohol-dependent individualsAsn40 alleleAsp40 alleleProperties of alcoholRelapse rateNaltrexone responseOpioid systemClinical trialsTreatment outcomesNaltrexoneFunctional polymorphismsGenotype groupsPatientsHeavy drinkingDrinking outcomesReceptor geneSpecific polymorphismsAssociation between the cortisol response to opioid blockade and the Asn40Asp polymorphism at the μ‐opioid receptor locus (OPRM1)
Hernandez‐Avila C, Wand G, Luo X, Gelernter J, Kranzler HR. Association between the cortisol response to opioid blockade and the Asn40Asp polymorphism at the μ‐opioid receptor locus (OPRM1). American Journal Of Medical Genetics Part B Neuropsychiatric Genetics 2003, 118B: 60-65. PMID: 12627468, DOI: 10.1002/ajmg.b.10054.Peer-Reviewed Original ResearchConceptsCortisol responseAsn40 alleleAsn40Asp polymorphismAsp40 alleleCortisol concentrationsCortisol time curveMu-opioid receptor proteinOpioid antagonist naloxoneMin post infusionPeak cortisol responsePlasma ACTH concentrationsEnhanced cortisol responseHigher cortisol concentrationsWarrants further investigationAsp40 variantIntravenous naloxoneOpioid blockadeNaloxone infusionAntagonist naloxonePlasma ACTHACTH concentrationsAgonist effectsPost infusionHealthy subjectsClinical relevance