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Bart G, Jaber M, Giang LM, Brundage RC, Korthuis PT. Findings from a pilot study of buprenorphine population pharmacokinetics: A potential effect of HIV on buprenorphine bioavailability. Drug Alcohol Depend 2022; 241:109696. [PMID: 36402052 PMCID: PMC9771970 DOI: 10.1016/j.drugalcdep.2022.109696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 11/13/2022]
Abstract
BACKGROUND Buprenorphine is widely used in the treatment of opioid use disorder (OUD). There are few pharmacokinetic models of buprenorphine across diverse populations. Population pharmacokinetics (POPPK) allows for covariates to be included in pharmacokinetic studies, thereby opening the potential to evaluate the effect of comorbidities, medications, and other factors on buprenorphine pharmacokinetics. This pilot study used POPPK to explore buprenorphine pharmacokinetics in patients with and without HIV receiving buprenorphine for OUD. METHODS Plasma buprenorphine levels were measured in 54 patients receiving buprenorphine for OUD just prior to and 2-5 h following regular buprenorphine dosing. A linear one-compartment POPPK model with first-order estimation was used to evaluate buprenorphine clearance (CL/F) and volume of distribution (V/F). Covariates included weight and HIV status. RESULTS All HIV+ patients reported complete past-month adherence to taking antiretroviral therapy that included either efavirenz or nevirapine. Buprenorphine CL/F was 76% higher in HIV+ patients (n = 17) than HIV- patients (n = 37). Buprenorphine V/F was 41% higher in the HIV+ patients. CONCLUSIONS POPPK can be used to model buprenorphine pharmacokinetics in a real-world clinical population. While interactions between ART and buprenorphine alter buprenorphine CL/F, we also found alteration in V/F. Proportionate changes in CL/F and V/F might indicate a primary effect on bioavailability (F) rather than two separate effects. These findings indicate reduced buprenorphine bioavailability in patients with HIV.
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Affiliation(s)
- Gavin Bart
- Department of Medicine, Hennepin Healthcare, 701 Park Avenue, Minneapolis, MN 55415, USA.
| | - Mutaz Jaber
- Department of Experimental and Clinical Pharmacology, University of Minnesota College of Pharmacy, 417 Delaware Street SE, Minneapolis, MN 55455, USA.
| | - Le Minh Giang
- Center for Training and Research on Substance Abuse and HIV, Hanoi Medical University, 1 Ton That Tung, Hanoi, Viet Nam.
| | - Richard C Brundage
- Department of Experimental and Clinical Pharmacology, University of Minnesota College of Pharmacy, 417 Delaware Street SE, Minneapolis, MN 55455, USA.
| | - P Todd Korthuis
- Department of Medicine, Section of Addiction Medicine, Oregon Health & Science University School of Medicine, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA.
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Buprenorphine Induction in Persons With Opioid Use Disorder Hospitalized with Acute Hepatitis A. J Addict Med 2021; 15:187-190. [PMID: 32909986 DOI: 10.1097/adm.0000000000000730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND It is not known whether buprenorphine/naloxone (bup/nx) can be safely initiated in hospitalized patients with acute hepatitis A infection. We assessed liver function and tolerability of bup/nx induction in patients with acute Hepatitis A Virus (HAV). METHODS Retrospective review of patients (N = 31) admitted to a tertiary care facility for acute HAV who were evaluated by an addiction medicine consultant. RESULTS No significant difference was seen in aspartate aminotransferase, alanine aminotransferase, total bilirubin, or INR trends in patients receiving bup/nx during hospitalization versus those not receiving bup/nx. Nausea was the most common reported symptom in patients receiving bup/nx. DISCUSSION AND CONCLUSIONS With careful monitoring and induction dose adjustment, bup/nx can be administered to patients with acute HAV without hepatic encephalopathy. Similarly, patients on bup/nx before hospitalization should not have this medication held in the setting of acute HAV. SCIENTIFIC SIGNIFICANCE This strategy may engage patients with acute HAV in treatment of OUD earlier and minimize disruptions in treatment.
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Buprenorphine-cannabis interaction in patients undergoing opioid maintenance therapy. Eur Arch Psychiatry Clin Neurosci 2021; 271:847-856. [PMID: 31907614 PMCID: PMC8236049 DOI: 10.1007/s00406-019-01091-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 12/11/2019] [Indexed: 01/20/2023]
Abstract
Buprenorphine is a partial μ-opioid agonist widely used for opioid maintenance therapy (OMT). It is mainly metabolized to pharmacologically active norbuprenorphine by the cytochrome P450 (CYP) isozyme 3A4. This may give rise to drug-drug interactions under combinations with inhibitors or inducers of CYP3A4. Cannabis is a potential inhibitor of CYP3A4, and there is a large degree of concomitant cannabis use among OMT patients. We performed a retrospective analysis on liver healthy OMT patients substituted with buprenorphine, either with (n = 15) or without (n = 17) concomitant use of cannabis. Patients with additional illicit drugs or medications affecting CYP3A were excluded. Measured blood concentrations of buprenorphine and norbuprenorphine were compared between the two groups. Cannabis users and non-users received similar doses, but users had 2.7-fold higher concentrations of buprenorphine (p < 0.01) and 1.4-fold for norbuprenorphine (1.4-fold, p = 0.07). Moreover, the metabolite-to-parent drug ratio was 0.98 in non-users and 0.38 in users (p = 0.02). Female gender did not produce significant effects. These findings indicate that cannabis use decreases the formation of norbuprenorphine and elevates buprenorphine and norbuprenorphine concentrations in blood most probably by inhibition of CYP3A4. The pharmacokinetic interaction may give rise to enhanced or altered opioid activity and risk of intoxications. Physicians should inform patients about this risk and supervise cannabis users by regular control of buprenorphine blood levels, i.e., by therapeutic drug monitoring.
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Talal AH, Venuto CS, Younis I. Assessment of Hepatic Impairment and Implications for Pharmacokinetics of Substance Use Treatment. Clin Pharmacol Drug Dev 2018; 6:206-212. [PMID: 28263464 DOI: 10.1002/cpdd.336] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 12/30/2016] [Indexed: 12/12/2022]
Abstract
Although the liver is the primary site of metabolism and biliary excretion for many medications, data are limited on the liver's pharmacokinetic abilities in cirrhosis. Cirrhosis develops through collagen deposition, eventually culminating in end-stage liver disease that compromises hepatic drug metabolism. Consequently, the US Food and Drug Administration (FDA) recommends evaluating the pharmacokinetics of medications in subjects with hepatic impairment if hepatic metabolism constitutes more than 20% of their elimination or if they have a narrow therapeutic range. A variety of noninvasive indices and radiologic procedures can be employed to assess hepatic drug metabolism and excretion. The Child-Pugh score is the most commonly used scale for assessing hepatic impairment among drugs submitted for US FDA approval. The score, originally developed to guide operative mortality in patients undergoing hepatic resection, has not been modified since its inception 5 decades ago. Furthermore, the score was not originally intended to be a guide for potential dose modification in patients with hepatic impairment. These reasons, in combination with the availability of a variety of new imaging modalities and an enhanced understanding of hepatic biology, should foster the development of novel methods to assess the effect of hepatic impairment on liver drug metabolism.
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Affiliation(s)
- Andrew H Talal
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University at Buffalo, Buffalo, NY, USA
| | - Charles S Venuto
- Center for Human Experimental Therapeutics, University of Rochester, Rochester, NY, USA.,AIDS Clinical Trials Group Pharmacology Specialty Laboratory, New York State Center of Excellence in Bioinformatics and Life Sciences; School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, NY, USA
| | - Islam Younis
- Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
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Tetrault JM, Tate JP, Edelman EJ, Gordon AJ, Lo Re V, Lim JK, Rimland D, Goulet J, Crystal S, Gaither JR, Gibert CL, Rodriguez-Barradas MC, Fiellin LE, Bryant K, Justice AC, Fiellin DA. Hepatic Safety of Buprenorphine in HIV-Infected and Uninfected Patients With Opioid Use Disorder: The Role of HCV-Infection. J Subst Abuse Treat 2016; 68:62-7. [PMID: 27431048 DOI: 10.1016/j.jsat.2016.06.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 05/10/2016] [Accepted: 06/03/2016] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Individuals with HIV and hepatitis C (HCV) infection, alcohol use disorder, or who are prescribed potentially hepatotoxic medications may be at increased risk for buprenorphine (BUP) associated hepatotoxicity. MATERIALS AND METHODS We examined a cohort of HIV-infected and uninfected patients receiving an initial BUP prescription between 2003 and 2012. We compared changes in alanine and aspartate aminotransferases (ALT and AST) and total bilirubin (TB) stratified by HIV status. We identified cases of liver enzyme elevation (LEE), TB elevation (TBE), and conducted chart review to assess for cases of drug induced liver injury (DILI) and death. We examined associations between age, sex, race, HIV-infection, HCV-infection, alcohol use disorder, and prescription of other potentially heptatotoxic medications with the composite endpoint of LEE, TBE, and DILI. RESULTS Of 666 patients prescribed BUP, 36% were HIV-infected, 98% were male, 60% had RNA-confirmed HCV infection, 50% had a recent diagnosis of alcohol use disorder, and 64% were prescribed other potentially hepatotoxic medications. No clinically significant changes were observed in median ALT, AST and TB and these changes did not differ between HIV-infected and uninfected patients. Compared with uninfected patients, HIV-infected (OR 7.3, 95% CI 2.1-26.1, p=0.002), HCV-infected (OR 4.9 95% CI 1.6-15.2, p=0.007) or HIV/HCV co-infected patients (OR 6.9, 95%CI 2.1-22.2, p=0.001) were more likely to have the composite endpoint of LEE, TB elevation or DILI, in analyses that excluded 60 patients with evidence of pre-existing liver injury. 31 patients had LEE, 14/187 HIV-infected and 17/340 uninfected (p=0.25); 11 had TBE, including 9/186 HIV-infected and 2/329 uninfected (p=0.002); 8 experienced DILI, 4/202 HIV-infected and 4/204 uninfected (p=0.45). There were no significant associations with alcohol use disorder or prescription of other potentially hepatotoxic medications after adjustment for HIV/HCV status. CONCLUSIONS Liver enzymes and TB are rarely elevated in HIV-infected and uninfected patients receiving BUP. Risk of hepatotoxicity was greater in individuals infected with HIV, HCV, or HIV/HCV co-infection, who may benefit from increased monitoring.
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Affiliation(s)
- Jeanette M Tetrault
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT.
| | - Janet P Tate
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT; VA Connecticut Health Care System, West Haven, CT
| | - E Jennifer Edelman
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT
| | - Adam J Gordon
- VA Pittsburgh Healthcare System and University of Pittsburgh, Pittsburgh, PA
| | - Vincent Lo Re
- University of Pennsylvania School of Medicine, Philadelphia, PA
| | - Joseph K Lim
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT
| | - David Rimland
- VA Medical Center, Atlanta, GA; Emory University School of Medicine, Atlanta, GA
| | - Joseph Goulet
- VA Connecticut Health Care System, West Haven, CT; Department of Psychiatry, Yale University School of Medicine, New Haven, CT
| | - Stephen Crystal
- Center for Health Services Research, Institute for Health, Rutgers University
| | - Julie R Gaither
- Center for Interdisciplinary Research on AIDS, Yale University School of Public Health, New Haven, CT
| | - Cynthia L Gibert
- VA Medical Center Washington DC; George Washington University School of Medicine and Health Sciences, Washington, DC
| | | | - Lynn E Fiellin
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT
| | - Kendall Bryant
- National Institute of Alcohol Abuse and Alcoholism, Bethesda, MD
| | - Amy C Justice
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT; VA Connecticut Health Care System, West Haven, CT; Center for Interdisciplinary Research on AIDS, Yale University School of Public Health, New Haven, CT
| | - David A Fiellin
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT; Center for Interdisciplinary Research on AIDS, Yale University School of Public Health, New Haven, CT
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Wang Y, Cipriano A, Munera C, Harris SC. Dose-Dependent Flux of Buprenorphine Following Transdermal Administration in Healthy Subjects. J Clin Pharmacol 2016; 56:1263-71. [DOI: 10.1002/jcph.718] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 02/03/2016] [Accepted: 02/03/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Yi Wang
- One Stamford Forum; Purdue Pharma; Stamford CT, USA
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Abstract
This paper is the thirty-seventh consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2014 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (endogenous opioids and receptors), and the roles of these opioid peptides and receptors in pain and analgesia (pain and analgesia); stress and social status (human studies); tolerance and dependence (opioid mediation of other analgesic responses); learning and memory (stress and social status); eating and drinking (stress-induced analgesia); alcohol and drugs of abuse (emotional responses in opioid-mediated behaviors); sexual activity and hormones, pregnancy, development and endocrinology (opioid involvement in stress response regulation); mental illness and mood (tolerance and dependence); seizures and neurologic disorders (learning and memory); electrical-related activity and neurophysiology (opiates and conditioned place preferences (CPP)); general activity and locomotion (eating and drinking); gastrointestinal, renal and hepatic functions (alcohol and drugs of abuse); cardiovascular responses (opiates and ethanol); respiration and thermoregulation (opiates and THC); and immunological responses (opiates and stimulants). This paper is the thirty-seventh consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2014 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (endogenous opioids and receptors), and the roles of these opioid peptides and receptors in pain and analgesia (pain and analgesia); stress and social status (human studies); tolerance and dependence (opioid mediation of other analgesic responses); learning and memory (stress and social status); eating and drinking (stress-induced analgesia); alcohol and drugs of abuse (emotional responses in opioid-mediated behaviors); sexual activity and hormones, pregnancy, development and endocrinology (opioid involvement in stress response regulation); mental illness and mood (tolerance and dependence); seizures and neurologic disorders (learning and memory); electrical-related activity and neurophysiology (opiates and conditioned place preferences (CPP)); general activity and locomotion (eating and drinking); gastrointestinal, renal and hepatic functions (alcohol and drugs of abuse); cardiovascular responses (opiates and ethanol); respiration and thermoregulation (opiates and THC); and immunological responses (opiates and stimulants).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, Flushing, NY 11367, United States.
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Assessment of drug-drug interactions between daclatasvir and methadone or buprenorphine-naloxone. Antimicrob Agents Chemother 2015; 59:5503-10. [PMID: 26124175 DOI: 10.1128/aac.00478-15] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 06/20/2015] [Indexed: 11/20/2022] Open
Abstract
Hepatitis C virus (HCV) infection is common among people who inject drugs, including those managed with maintenance opioids. Pharmacokinetic interactions between opioids and emerging oral HCV antivirals merit evaluation. Daclatasvir is a potent pangenotypic inhibitor of the HCV NS5A replication complex recently approved for HCV treatment in Europe and Japan in combination with other antivirals. The effect of steady-state daclatasvir (60 mg daily) on stable plasma exposure to oral opioids was assessed in non-HCV-infected subjects receiving methadone (40 to 120 mg; n = 14) or buprenorphine plus naloxone (8 to 24 mg plus 2 to 6 mg; n = 11). No relevant interaction was inferred if the 90% confidence interval (CI) of the geometric mean ratio (GMR) of opioid area under the plasma concentration-time curve over the dosing interval (AUCτ) or maximum concentration in plasma (C max) with versus without daclatasvir was within literature-derived ranges of 0.7 to 1.43 (R- and S-methadone) or 0.5 to 2.0 (buprenorphine and norbuprenorphine). Dose-normalized AUCτ for R-methadone (GMR, 1.08; 90% CI, 0.94 to 1.24), S-methadone (1.13; 0.99 to 1.30), and buprenorphine (GMR, 1.37; 90% CI, 1.24 to 1.52) were within the no-effect range. The norbuprenorphine AUCτ was slightly elevated in the primary analysis (GMR, 1.62; 90% CI, 1.30 to 2.02) but within the no-effect range in a supplementary analysis of all evaluable subjects. Dose-normalized C max for both methadone enantiomers, buprenorphine and norbuprenorphine, were within the no-effect range. Standardized assessments of opioid pharmacodynamics were unchanged throughout daclatasvir administration with methadone or buprenorphine. Daclatasvir pharmacokinetics were similar to historical data. Coadministration of daclatasvir and opioids was generally well tolerated. In conclusion, these data suggest that daclatasvir can be administered with buprenorphine or methadone without dose adjustments.
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