2021
Purposeful Fentanyl Use and Associated Factors among Opioid-Dependent People Who Inject Drugs
Chandra DK, Altice FL, Copenhaver MM, Zhou X, Didomizio E, Shrestha R. Purposeful Fentanyl Use and Associated Factors among Opioid-Dependent People Who Inject Drugs. Substance Use & Misuse 2021, 56: 979-987. PMID: 33769199, DOI: 10.1080/10826084.2021.1901931.Peer-Reviewed Original ResearchConceptsOpioid-dependent PWIDFentanyl useOpioid-dependent peopleIndependent correlatesSevere depressionSex-related risk behaviorsMethadone-maintained patientsMultivariable logistic regressionOpioid-related mortalityRecent cocaine useCross-sectional surveySelf-reported drugMethadone dosageYoung PWIDDaily injectionsMethadone clinicsAssociated FactorsFentanyl exposureHigh prevalencePWIDSynthetic opioidsCocaine useYounger ageRisk behaviorsLogistic regression
2019
HIV-Related Stigma, Motivation to Adhere to Antiretroviral Therapy, and Medication Adherence Among HIV-Positive Methadone-Maintained Patients
Shrestha R, Altice FL, Copenhaver MM. HIV-Related Stigma, Motivation to Adhere to Antiretroviral Therapy, and Medication Adherence Among HIV-Positive Methadone-Maintained Patients. JAIDS Journal Of Acquired Immune Deficiency Syndromes 2019, 80: 166-173. PMID: 30383588, PMCID: PMC6331231, DOI: 10.1097/qai.0000000000001891.Peer-Reviewed Original ResearchConceptsOptimal ART adherenceAntiretroviral therapyMethadone-maintained patientsMethadone maintenance treatmentART adherenceMaintenance treatmentHIV treatment outcomesHIV-positive patientsOpioid agonist therapyMultivariable logistic regressionHIV risk behaviorsExplanatory pathwaysAgonist therapySuboptimal adherenceMedication adherenceHIV treatmentTreatment outcomesHIV stigmaPatientsLogistic regressionHIVPrevention initiativesTherapyAdherenceSignificant correlates
2018
Viral suppression among HIV-infected methadone-maintained patients: The role of ongoing injection drug use and adherence to antiretroviral therapy (ART)
Shrestha R, Copenhaver MM. Viral suppression among HIV-infected methadone-maintained patients: The role of ongoing injection drug use and adherence to antiretroviral therapy (ART). Addictive Behaviors 2018, 85: 88-93. PMID: 29879611, PMCID: PMC6337064, DOI: 10.1016/j.addbeh.2018.05.031.Peer-Reviewed Original ResearchConceptsMethadone maintenance therapyMethadone-maintained patientsOngoing injection drug useViral suppressionAntiretroviral therapyInjection drug useHIV risk behaviorsDrug useSelf-reported HIV risk behaviorsImproved virologic outcomesOptimal ART adherenceHigher CD4 countsSustained viral suppressionMultivariable logistic regressionVirologic outcomesCD4 countMaintenance therapyOptimal adherenceART adherenceHIV treatmentIndependent correlatesTreatment challengesRisk populationsPatientsHIV
2015
Gender differences in associations between neurocognitive impairment and cocaine use among high-risk cocaine-dependent methadone-maintained patients
Shrestha R, Huedo-Medina T, Copenhaver M. Gender differences in associations between neurocognitive impairment and cocaine use among high-risk cocaine-dependent methadone-maintained patients. Drug And Alcohol Dependence 2015, 156: e204. DOI: 10.1016/j.drugalcdep.2015.07.549.Peer-Reviewed Original ResearchMethadone-maintained patientsNeurocognitive impairmentCocaine useGender differencesPatientsImpairment