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Toledo T, Castro T, Oliveira VG, Veloso VG, Grinsztejn B, Cardoso SW, Torres TS, Estrela R. Pharmacokinetics of Antiretroviral Drugs in Older People Living with HIV: A Systematic Review. Clin Pharmacokinet 2023; 62:1219-1230. [PMID: 37561283 DOI: 10.1007/s40262-023-01291-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/20/2023] [Indexed: 08/11/2023]
Abstract
BACKGROUND AND OBJECTIVE The life expectancy of people living with HIV (PLWHIV) has significantly improved in recent decades, mostly due to antiretroviral (ARV) therapy. Aging can affect the pharmacokinetics of drugs and, as a consequence, increase the risk of drug interactions and toxicity that may impact treatment. The aim of this study was to carry out a systematic review of the literature on the effect of aging on ARV pharmacokinetics. METHODS Searches were performed in the BVS, EMBASE and PUBMED databases until November 2022. All studies available in English, Spanish and Portuguese investigating the pharmacokinetics of ARV approved by the US Food and Drug Administration (FDA) from 2005 to 2020 were selected. Peer-reviewed publications were included if they met all criteria: adults (≥ 18 years of age) living with or without HIV; report any pharmacokinetic parameter or plasma concentration of at least one of the following ARVs: tenofovir alafenamide fumarate (TAF); doravirine (DOR), rilpivirine (RIL) and etravirine (ETR); darunavir (DRV), tipranavir (TPV) and fostemsavir (FTR); dolutegravir (DTG), raltegravir (RAL), bictegravir (BIC) and elvitegravir (EVG); maraviroc (MVC); ibalizumab (IBA); cobicistat (COBI). Pharmacokinetic parameters were reported stratified per age group: young adults (aged 18-49 years) or older (age ≥ 50 years) and all studies were evaluated for quality. The review protocol was registered in the PROSPERO database (registration number CRD42021236432). RESULTS Among 97 studies included, 20 reported pharmacokinetic evaluation in older individuals (age ≥ 50 years). Twenty five percent of the articles were phase I randomized clinical trials with HIV-negative participants and non-compartmental pharmacokinetic analysis presenting the parameters area under the curve (AUC) and peak drug concentration (Cmax). Seven age-stratified studies evaluated BIC, ETR, DRV, DTG, DOR and RAL. We found publications with discordant results for ETR and DTG pharmacokinetics in different age groups. DRV exposure was highly variable but modestly increased in aging PLWHIV. In contrast, no influence of age on BIC, DOR and RAL exposure was observed. A variability in pharmacokinetic parameters could be observed for the other ARVs (TAF and MVC) in different age groups. CONCLUSION Exposure to DRV increases modestly with age, while exposure to BIC, DOR and RAL appears to be unaffected by age. As the available evidence to confirm a potential effect of aging on ARV pharmacokinetics is limited, further studies are necessary.
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Affiliation(s)
- Thainá Toledo
- Sérgio Arouca National School of Public Health, ENSP Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Thales Castro
- Evandro Chagas National Institute of Infectious Diseases, INI Fiocruz, Rio de Janeiro, Brazil
| | - Vanessa G Oliveira
- Evandro Chagas National Institute of Infectious Diseases, INI Fiocruz, Rio de Janeiro, Brazil
| | | | - Beatriz Grinsztejn
- Evandro Chagas National Institute of Infectious Diseases, INI Fiocruz, Rio de Janeiro, Brazil
| | - Sandra Wagner Cardoso
- Evandro Chagas National Institute of Infectious Diseases, INI Fiocruz, Rio de Janeiro, Brazil
| | - Thiago S Torres
- Evandro Chagas National Institute of Infectious Diseases, INI Fiocruz, Rio de Janeiro, Brazil
| | - Rita Estrela
- Sérgio Arouca National School of Public Health, ENSP Fiocruz, Rio de Janeiro, RJ, Brazil.
- Evandro Chagas National Institute of Infectious Diseases, INI Fiocruz, Rio de Janeiro, Brazil.
- Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
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Abd-Ellah HS, Mudududdla R, Carter GP, Baell JB. Novel Perspectives on the Design and Development of a Long-Acting Subcutaneous Raltegravir Injection for Treatment of HIV-In Vitro and In Vivo Evaluation. Pharmaceutics 2023; 15:pharmaceutics15051530. [PMID: 37242770 DOI: 10.3390/pharmaceutics15051530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/11/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023] Open
Abstract
Antiretrovirals (ARVs) are a highly effective therapy for treatment and prevention of HIV infection, when administered as prescribed. However, adherence to lifelong ARV regimens poses a considerable challenge and places HIV patients at risk. Long-acting ARV injections may improve patient adherence as well as maintaining long-term continuous drug exposure, resulting in improved pharmacodynamics. In the present work, we explored the aminoalkoxycarbonyloxymethyl (amino-AOCOM) ether prodrug concept as a potential approach to long-acting ARV injections. As a proof of concept, we synthesised model compounds containing the 4-carboxy-2-methyl Tokyo Green (CTG) fluorophore and assessed their stability under pH and temperature conditions that mimic those found in the subcutaneous (SC) tissue. Among them, probe 21 displayed very slow fluorophore release under SC-like conditions (98% of the fluorophore released over 15 d). Compound 25, a prodrug of the ARV agent raltegravir (RAL), was subsequently prepared and evaluated using the same conditions. This compound showed an excellent in vitro release profile, with a half-life (t½) of 19.3 d and 82% of RAL released over 45 d. In mice, 25 extended the half-life of unmodified RAL by 4.2-fold (t½ = 3.18 h), providing initial proof of concept of the ability of amino-AOCOM prodrugs to extend drug lifetimes in vivo. Although this effect was not as pronounced as seen in vitro-presumably due to enzymatic degradation and rapid clearance of the prodrug in vivo-the present results nevertheless pave the way for development of more metabolically stable prodrugs, to facilitate long-acting delivery of ARVs.
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Affiliation(s)
- Heba S Abd-Ellah
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia
- Medicinal Chemistry Department, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Ramesh Mudududdla
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia
| | - Glen P Carter
- Microbiology and Immunology Department, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, VIC 3001, Australia
| | - Jonathan B Baell
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Parkville, VIC 3052, Australia
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing 211816, China
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Stader F, Marzolini C. Sex-related pharmacokinetic differences with aging. Eur Geriatr Med 2021; 13:559-565. [PMID: 34797553 DOI: 10.1007/s41999-021-00587-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 11/09/2021] [Indexed: 11/29/2022]
Abstract
PURPOSE The proportion of women increases with advanced age, but older women are often underrepresented in clinical trials. Therefore, little is known about the combined effect of sex- and age-related physiological changes on drug pharmacokinetics. METHODS We compiled clinical studies, which investigated sex-related pharmacokinetic differences both in older and young women and men. The ratio women/men was calculated for various pharmacokinetic parameters across adulthood to assess sex-related differences in drug pharmacokinetics with aging. The contribution of body weight and drug characteristics to sex-related pharmacokinetic differences were explored using analysis of variance. RESULTS We found 67 studies reporting the pharmacokinetics for 56 drugs both in older and young women and men. Median peak concentration (Cmax) (interquartile range (IQR)) and drug exposure (AUC) (IQR) were 22% (8-41%) and 20% (0-39%) higher in women compared with men whereas time to peak concentration (tmax), apparent volume of distribution (VdF) and elimination half-life (t1/2) were not significantly different. Body weight and the drug main elimination pathway contributed to sex-related differences in Cmax and AUC. Relative to men, women had a modest increase in Cmax with increasing age (r = 0.19, p = 0.04). Conversely, sex-related differences in AUC remained constant with increasing age. CONCLUSION The pharmacokinetic differences between women and men were modest and, with the exception of Cmax, remained constant with increasing age. The higher plasma concentration might be correlated to more adverse events in older women and thus, drug treatment should be started on the lower recommended dosage when appropriate particularly for drugs characterized by a narrow therapeutic index.
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Affiliation(s)
- Felix Stader
- Division of Infectious Diseases and Hospital Epidemiology, Departments of Medicine and Clinical Research, University Hospital Basel, Basel, Switzerland.,University of Basel, Basel, Switzerland.,Simcyp Division, Certara UK Ltd., Level 2-Acero, 1 Concourse Way, Sheffield, S1 2BJ, England
| | - Catia Marzolini
- Division of Infectious Diseases and Hospital Epidemiology, Departments of Medicine and Clinical Research, University Hospital Basel, Basel, Switzerland. .,University of Basel, Basel, Switzerland.
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Abstract
Effective antiretroviral therapy has resulted in a close to normal life expectancy for people living with HIV. This has led to a shift in the age distribution of women living with HIV in the UK, with one in three attending for HIV care estimated to be aged 45-56 years in 2014. The lack of experience of many HIV physicians in managing menopause, and the perceived complexity of managing menopause in women living with HIV by general practitioners means that many women are unable to access appropriate care and support. This is aggravated by the relative paucity of data on menopause in women living with HIV and conflicting results in this field, for example with regard to age of onset of menopause and symptomatology experienced. Furthermore, women living with HIV have unique considerations such as potential interactions between antiretroviral therapy and menopause hormone therapy (previously called hormone replacement therapy) and other physiological concerns such as a multifactorial propensity towards decreased bone mineral density and potentially increased cardiovascular risk. On the whole, menopause hormone therapy is probably underutilised in this group of women due to perceived concerns around drug-drug interactions, as well as fears shared with women in the general population about menopause hormone therapy. Menopausal women should be given adequate information on symptomatology, lifestyle modification and treatment options including menopause hormone therapy. Furthermore, a holistic approach which considers the increased burden of poor mental health in this population is essential.
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Affiliation(s)
- Lauren Bull
- 9762 Chelsea and Westminster Hospital , London, UK
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Kovarova M, Swanson MD, Sanchez RI, Baker CE, Steve J, Spagnuolo RA, Howell BJ, Hazuda DJ, Garcia JV. A long-acting formulation of the integrase inhibitor raltegravir protects humanized BLT mice from repeated high-dose vaginal HIV challenges. J Antimicrob Chemother 2016; 71:1586-96. [PMID: 27002074 PMCID: PMC4867102 DOI: 10.1093/jac/dkw042] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 01/11/2016] [Accepted: 01/29/2016] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Pre-exposure prophylaxis (PrEP) using antiretroviral drugs (ARVs) has been shown to reduce HIV transmission in people at high risk of HIV infection. Adherence to PrEP strongly correlates with the level of HIV protection. Long-acting injectable ARVs provide sustained systemic drug exposures over many weeks and can improve adherence due to infrequent parenteral administration. Here, we evaluated a new long-acting formulation of raltegravir for prevention of vaginal HIV transmission. METHODS Long-acting raltegravir was administered subcutaneously to BALB/c, NSG (NOD-scid-gamma) and humanized BLT (bone marrow-liver-thymus) mice and rhesus macaques. Raltegravir concentration in peripheral blood and tissue was analysed. Suppression of HIV replication was assessed in infected BLT mice. Two high-dose HIV vaginal challenges were used to evaluate protection from HIV transmission in BLT mice. RESULTS Two weeks after a single subcutaneous injection of long-acting raltegravir in BLT mice (7.5 mg) and rhesus macaques (160 mg), the plasma concentration of raltegravir was comparable to 400 mg orally, twice daily in humans. Serum collected from mice 3 weeks post-administration of long-acting raltegravir efficiently blocked HIV infection of TZM-bl indicator cells in vitro. Administration of long-acting raltegravir suppressed viral RNA in plasma and cervico-vaginal fluids of infected BLT mice, demonstrating penetration of active raltegravir into the female reproductive tract. Using transmitted/founder HIV we observed that BLT mice administered a single subcutaneous dose of long-acting raltegravir were protected from two high-dose HIV vaginal challenges 1 week and 4 weeks after drug administration. CONCLUSIONS These preclinical results demonstrated the efficacy of long-acting raltegravir in preventing vaginal HIV transmission.
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Affiliation(s)
- Martina Kovarova
- Division of Infectious Diseases, Center for AIDS Research, School of Medicine, University of North Carolina at Chapel Hill, NC, USA
| | - Michael D Swanson
- Division of Infectious Diseases, Center for AIDS Research, School of Medicine, University of North Carolina at Chapel Hill, NC, USA
| | - Rosa I Sanchez
- Merck Research Laboratories, Merck & Co., Inc., West Point, PA 19486, USA
| | - Caroline E Baker
- Division of Infectious Diseases, Center for AIDS Research, School of Medicine, University of North Carolina at Chapel Hill, NC, USA
| | - Justin Steve
- Merck Research Laboratories, Merck & Co., Inc., West Point, PA 19486, USA
| | - Rae Ann Spagnuolo
- Division of Infectious Diseases, Center for AIDS Research, School of Medicine, University of North Carolina at Chapel Hill, NC, USA
| | - Bonnie J Howell
- Merck Research Laboratories, Merck & Co., Inc., West Point, PA 19486, USA
| | - Daria J Hazuda
- Merck Research Laboratories, Merck & Co., Inc., West Point, PA 19486, USA
| | - J Victor Garcia
- Division of Infectious Diseases, Center for AIDS Research, School of Medicine, University of North Carolina at Chapel Hill, NC, USA
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Abstract
Since the implementation of effective combination antiretroviral therapy, HIV infection has been transformed from a life-threatening condition into a chronic disease. As people with HIV are living longer, aging and its associated manifestations have become key priorities as part of HIV care. For women with HIV, menopause is an important part of aging to consider. Women currently represent more than one half of HIV-positive individuals worldwide. Given the vast proportion of women living with HIV who are, and will be, transitioning through age-related life events, the interaction between HIV infection and menopause must be addressed by clinicians and researchers. Menopause is a major clinical event that is universally experienced by women, but affects each individual woman uniquely. This transitional time in women's lives has various clinical implications including physical and psychological symptoms, and accelerated development and progression of other age-related comorbidities, particularly cardiovascular disease, neurocognitive dysfunction, and bone mineral disease; all of which are potentially heightened by HIV or its treatment. Furthermore, within the context of HIV, there are the additional considerations of HIV acquisition and transmission risk, progression of infection, changes in antiretroviral pharmacokinetics, response, and toxicities. These menopausal manifestations and complications must be managed concurrently with HIV, while keeping in mind the potential influence of menopause on the prognosis of HIV infection itself. This results in additional complexity for clinicians caring for women living with HIV, and highlights the shifting paradigm in HIV care that must accompany this aging and evolving population.
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Affiliation(s)
- Nisha Andany
- Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - V Logan Kennedy
- Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada
| | - Muna Aden
- Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada
| | - Mona Loutfy
- Department of Medicine, University of Toronto, Toronto, ON, Canada; Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada
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