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Kengo A, Nabisere R, Gausi K, Musaazi J, Buzibye A, Omali D, Aarnoutse R, Lamorde M, Dooley KE, Sloan DJ, Denti P, Sekaggya-Wiltshire C. Dolutegravir pharmacokinetics in Ugandan patients with TB and HIV receiving standard- versus high-dose rifampicin. Antimicrob Agents Chemother 2023; 67:e0043023. [PMID: 37850738 PMCID: PMC10648962 DOI: 10.1128/aac.00430-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 07/13/2023] [Indexed: 10/19/2023] Open
Abstract
Higher rifampicin doses may improve tuberculosis treatment outcomes. This could however exacerbate the existing drug interaction with dolutegravir. Moreover, the metabolism of dolutegravir may also be affected by polymorphism of UGT1A1, a gene that codes for uridine diphosphate glucuronosyltransferase. We used population pharmacokinetic modeling to compare the pharmacokinetics of dolutegravir when coadministered with standard- versus high-dose rifampicin in adults with tuberculosis and HIV, and investigated the effect of genetic polymorphisms. Data from the SAEFRIF trial, where participants were randomized to receive first-line tuberculosis treatment with either standard- 10 mg/kg or high-dose 35 mg/kg rifampicin alongside antiretroviral therapy, were used. The dolutegravir model was developed with 211 plasma concentrations from 44 participants. The median (interquartile range) rifampicin area under the curve (AUC) in the standard- and high-dose arms were 32.3 (28.7-36.7) and 153 (138-175) mg·h/L, respectively. A one-compartment model with first-order elimination and absorption through transit compartments best described dolutegravir pharmacokinetics. For a typical 56 kg participant, we estimated a clearance, absorption rate constant, and volume of distribution of 1.87 L/h, 1.42 h-1, and 12.4 L, respectively. Each 10 mg·h/L increase in the AUC of coadministered rifampicin from 32.3 mg·h/L led to a 2.3 (3.1-1.4) % decrease in dolutegravir bioavailability. Genetic polymorphism of UGT1A1 did not significantly affect dolutegravir pharmacokinetics. Simulations of trough dolutegravir concentrations show that the 50 mg twice-daily regimen attains both the primary and secondary therapeutic targets of 0.064 and 0.3 mg/L, respectively, regardless of the dose of coadministered rifampicin, unlike the once-daily regimen.
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Affiliation(s)
- Allan Kengo
- Department of Medicine, Division of Clinical Pharmacology, University of Cape Town, Cape Town, South Africa
| | - Ruth Nabisere
- Infectious Disease Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Kamunkhwala Gausi
- Department of Medicine, Division of Clinical Pharmacology, University of Cape Town, Cape Town, South Africa
| | - Joseph Musaazi
- Infectious Disease Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Allan Buzibye
- Infectious Disease Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Denis Omali
- Infectious Disease Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Rob Aarnoutse
- Department of Pharmacy, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Mohammed Lamorde
- Infectious Disease Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Kelly E. Dooley
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Centre, Nashville, Tennessee, USA
| | - Derek James Sloan
- Division of Infection and Global Health, School of Medicine, University of St. Andrews, St Andrews, United Kingdom
| | - Paolo Denti
- Department of Medicine, Division of Clinical Pharmacology, University of Cape Town, Cape Town, South Africa
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Kengo A, Gausi K, Nabisere R, Musaazi J, Buzibye A, Omali D, Aarnoutse R, Lamorde M, Dooley KE, Sloan DJ, Sekaggya-Wiltshire C, Denti P. Unexpectedly low drug exposures among Ugandan patients with TB and HIV receiving high-dose rifampicin. Antimicrob Agents Chemother 2023; 67:e0043123. [PMID: 37850737 PMCID: PMC10649026 DOI: 10.1128/aac.00431-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 07/13/2023] [Indexed: 10/19/2023] Open
Abstract
We characterized the pharmacokinetics of standard- and high-dose rifampicin in Ugandan adults with tuberculosis and HIV taking dolutegravir- or efavirenz-based antiretroviral therapy. A liver model with saturable hepatic extraction adequately described the data, and the increase in exposure between high and standard doses was 4.7-fold. This was lower than what previous reports of dose-exposure nonlinearity would predict and was ascribed to 38% lower bioavailability of the rifampicin-only top-up formulation compared to the fixed-dose combination.
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Affiliation(s)
- Allan Kengo
- Department of Medicine, Division of Clinical Pharmacology, University of Cape Town, Cape Town, South Africa
| | - Kamunkhwala Gausi
- Department of Medicine, Division of Clinical Pharmacology, University of Cape Town, Cape Town, South Africa
| | - Ruth Nabisere
- Infectious Disease Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Joseph Musaazi
- Infectious Disease Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Allan Buzibye
- Infectious Disease Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Denis Omali
- Infectious Disease Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Rob Aarnoutse
- Department of Pharmacy, Radboud university medical center, Nijmegen, the Netherlands
| | - Mohammed Lamorde
- Infectious Disease Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Kelly E. Dooley
- Department of Medicine, Division of Infectious Diseases, Vanderbilt University Medical Centre, Nashville, Tennessee, USA
| | - Derek James Sloan
- Division of Infection and Global Health, School of Medicine, University of St. Andrews, Scotland, United Kingdom
| | | | - Paolo Denti
- Department of Medicine, Division of Clinical Pharmacology, University of Cape Town, Cape Town, South Africa
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Mulindwa F, Castelnuovo B, Brusselaers N, Nabwana M, Bollinger R, Buzibye A, Agnes Odongpiny EL, Kiguba R, Schwarz JM. Dolutegravir use over 48 weeks is not associated with worsening insulin resistance and pancreatic beta cell function in a cohort of HIV-infected Ugandan adults. AIDS Res Ther 2023; 20:65. [PMID: 37689695 PMCID: PMC10492310 DOI: 10.1186/s12981-023-00564-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 08/30/2023] [Indexed: 09/11/2023] Open
Abstract
BACKGROUND The Uganda Ministry of Health issued restrictive guidelines on the use of dolutegravir (DTG) in persons stratified to have a heightened risk of diabetes mellitus. This followed multiple reports of persons with HIV (PWH) presenting with accelerated hyperglycemia after a few weeks to months of exposure to DTG. Having demonstrated a low incidence of diabetes mellitus and improving blood glucose trajectories in a cohort of ART naïve Ugandan PWH on DTG, we sought to determine whether the observed improvement in blood glucose did not mask background compensated insulin resistance. METHODS In this analysis, 63 patients underwent serial oral glucose tolerance tests over 48 weeks. Using fasting serum insulin and glucose, we calculated insulin resistance and pancreatic beta cell function by homeostatic modelling (HOMA IR and HOMA%β respectively). Absolute mean changes between baseline and post-baseline blood glucose, pancreatic beta cell function and insulin resistance were computed by subtracting each post-baseline value from the baseline value and compared using student t-test. Multiple linear regression models were used to determine the factors associated with changes in pancreatic beta cell function and insulin resistance. RESULTS Of the 63 participants, 37 (58%) were female. Median age was 31 (IQR: 28-37). Despite a trend towards an initial increase in both HOMA IR and HOMA%β at 12 weeks followed by a decline through 36 weeks to 48 weeks, the HOMA IR and HOMA%β at 48 weeks were not significantly different from baseline i.e. (difference in mean HOMA IR from baseline: 0.14, 95%CI: -0.46, 0.733, p = 0.648) and (difference in mean HOMA %β from baseline: 6.7, 95%CI: -13.4, 26.8, p = 0.506) respectively. CONCLUSION We demonstrated insignificant changes in both insulin resistance and pancreatic beta cell function in clinically stable young adult Ugandan PWH on dolutegravir for 48 weeks. We add to the body of evidence demonstrating glucose metabolic safety of dolutegravir in ART naïve patients. Ugandan guidelines should reconsider restricting DTG initiation in ART naive adults at high risk for diabetes.
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Affiliation(s)
- Frank Mulindwa
- Capacity Building Program, Makerere University Infectious Diseases Institute, Kampala, Uganda.
- Global Health Institute, Antwerp University, Antwerp, Belgium.
| | - Barbara Castelnuovo
- Capacity Building Program, Makerere University Infectious Diseases Institute, Kampala, Uganda
| | - Nele Brusselaers
- Global Health Institute, Antwerp University, Antwerp, Belgium
- Centre for Translational Microbiome Research, Department of Microbiology, Tumour and Cell Biology, Karolinska University, Stockholm, Sweden
| | - Martin Nabwana
- Makerere University - Johns Hopkins University Research Collaboration, Kampala, Uganda
| | | | - Allan Buzibye
- Capacity Building Program, Makerere University Infectious Diseases Institute, Kampala, Uganda
| | | | - Ronald Kiguba
- Department of Pharmacology and Therapeutics, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Jean-Marc Schwarz
- School of Medicine, University of California San Francisco, San Francisco, USA
- Department of Basic Sciences, Touro University California College of Osteopathic Medicine, Vallejo, CA, USA
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Nakijoba R, Nakayiwa Kawuma A, Ojara FW, Tabwenda JC, Kyeyune J, Turyahabwe C, Asiimwe SP, Magoola J, Banda CG, Castelnuovo B, Buzibye A, Waitt C. -Pharmacokinetics of antimalarial drugs used to treat uncomplicated malaria in breastfeeding mother-infant pairs: An observational pharmacokinetic study. Wellcome Open Res 2023; 8:12. [PMID: 37744730 PMCID: PMC10514676 DOI: 10.12688/wellcomeopenres.18512.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/08/2023] [Indexed: 09/26/2023] Open
Abstract
Background: Data surrounding the exposure of the breastfed infant to drugs and any associated risks are sparse. Drugs usually are transferred to milk in small quantities, and many have been used without obviously noticeable infant toxicity for many years - this lack of a 'safety signal' has further reduced the interest in studying mother-to-infant transfer of the drugs. In sub-Saharan Africa, pregnant women are at risk of Plasmodium falciparum infection, and one in four women have evidence of placental infection at the time of delivery. Artemisinin-based combination therapies (ACTs), primarily artemether-lumefantrine (AL), are the current first-line treatment for uncomplicated Plasmodium falciparum malaria, with the same dosing recommendations in breastfeeding women as those in the adult population. Dihydroartemisinin-piperaquine (DP) is routinely used as an alternative to AL in Uganda. However, lactation pharmacokinetics (PK) of ACTs are unknown. Pharmacokinetic characterization of anti-malarial transfer to breast milk and breastfed infants is crucial in understanding the potential consequences to the infant, in terms of therapeutic- and prophylactic effects as well as potential toxicity. Methods: This observational study will enroll 30 mother-infant pairs, and aims to characterize the breastmilk transfer of antimalarial medications (AL and DP) to infants when these ACTs are administered to mothers as part of treatment for uncomplicated malaria. In addition, we will assess the mental health of the breastfeeding mothers enrolled as well as the well-being of their children. PK samples of maternal blood, breastmilk and breastfeeding infant's blood will be obtained at specific times points. Pharmacokinetic data will be analyzed using a population pharmacokinetic approach. Conclusions: We anticipate that findings from this research will guide to develop a PK model describing lumefantrine and piperaquine disposition and will provide a framework to foster other lactation pharmacokinetic studies in different disease areas.
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Affiliation(s)
- Ritah Nakijoba
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, 256, Uganda
| | - Aida Nakayiwa Kawuma
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, 256, Uganda
| | - Francis Williams Ojara
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, 256, Uganda
- Department of Pharmacology and Therapeutics, Gulu University, Gulu, 256, Uganda
| | - Jovia C. Tabwenda
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, 256, Uganda
| | - Jacqueline Kyeyune
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, 256, Uganda
| | - Christine Turyahabwe
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, 256, Uganda
| | - Simon Peter Asiimwe
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, 256, Uganda
| | - Johnson Magoola
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, 256, Uganda
| | | | - Barbara Castelnuovo
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, 256, Uganda
| | - Allan Buzibye
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, 256, Uganda
| | - Catriona Waitt
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, 256, Uganda
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, L69 7BE, UK
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Mulindwa F, Schwarz JM, Brusselaers N, Nabwana M, Bollinger R, Buzibye A, Amutuhaire W, Yendewa G, Laker E, Kiguba R, Castelnuovo B. Blood glucose outcomes of anti-retroviral therapy naïve Ugandan people with HIV with pre-diabetes mellitus initiated on dolutegravir for 48 weeks. Res Sq 2023:rs.3.rs-3154716. [PMID: 37577475 PMCID: PMC10418540 DOI: 10.21203/rs.3.rs-3154716/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Background The Uganda ministry of Health recommends frequent blood glucose monitoring for the first six months on dolutegravir, in people with HIV (PWH) having pre-diabetes mellitus (pre-DM). We sought to determine if indeed PWH with pre-diabetes started on dolutegravir had worse blood glucose outcomes at 48 weeks compared to those with normal blood glucose. Methods In this matched cohort study, we compared 44 PWH with pre-DM and 88 PWH with normal blood glucose at baseline. The primary outcome was change in mean fasting blood glucose (FBG) from baseline to week 48 and 2-hour blood glucose (2hBG) from baseline to week 36 compared between the two groups. Results There was significant increase in FBG in PWH with normal blood glucose (mean change in FBG(FBG): 3.9mg/dl, 95% confidence interval (95% CI): (2.2, 5.7), p value (p) = < 0.0001) and decrease in those with pre-DM (FBG: -6.1mg/dl, 95%CI (-9.1, -3.2), p = < 0.0001) at 48 weeks. 2hBG at 36 weeks was significantly lower than at baseline in both groups with the magnitude of reduction larger in those with pre-DM at 12 weeks (adjusted differences in mean drop in 2hBG (a2hBG): -19.69mg/dl, 95%CI (-30.19, -9.19), p = < 0.0001) and 36 weeks (a2hBG: -19.97mg/dl, 95%CI (-30.56, -9.39), p = < 0.0001). Conclusion We demonstrated that Ugandan ART naïve PWH with pre-diabetes at enrollment have consistent improvement in both fasting blood glucose and glucose tolerance over 48 weeks on dolutegravir. Intensified blood glucose monitoring of these patients in the first six months of dolutegravir may be unnecessary.
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Affiliation(s)
| | | | | | - Martin Nabwana
- Makerere University Johns Hopkins University Research Collaboration
| | | | | | | | | | - Eva Laker
- Makerere University Infectious Diseases Institute
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Ocan M, Nakalembe L, Otike C, Omali D, Buzibye A, Nsobya S. Pharmacopeial quality of artemether-lumefantrine anti-malarial agents in Uganda. Malar J 2023; 22:165. [PMID: 37237283 DOI: 10.1186/s12936-023-04600-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 05/20/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND Substandard anti-malarial agents pose a significant challenge to effective malaria control and elimination efforts especially in sub-Saharan Africa. The quality of anti-malarials in most low-and-middle income countries (LMICs) is affected by several factors including inadequate regulation and limited resources. In this study, the pharmacopeial quality of artemether-lumefantrine (AL) in low and high malaria transmission settings in Uganda was assessed. METHODS This was a cross-sectional study conducted among randomly selected private drug outlets. The AL anti-malarials available in drug outlets were purchased using overt method. The samples were screened for quality using visual inspection, weight uniformity, content assay and dissolution tests. The assay test was done using liquid chromatography-mass spectrometry (LC-MS). The samples were considered substandard if the active pharmaceutical ingredient (API) content was outside 90-110% range of the label claim. Dissolution test was conducted following United States Pharmacopoeia (USP) method. Data was analysed using descriptive statistics and presented as means with standard deviations, frequencies, and proportions. Correlation between medicine quality and independent variables was determined using Fisher's exact test of independence at 95% level of significance. RESULTS A total of 74 AL anti-malarial samples were purchased from high (49/74; 66.2%) and low (25/74; 33.8%) malaria transmission settings. The most common batch of AL was LONART, 32.4% (24/74), with 33.8% (25/74) being 'Green leaf'. Overall prevalence of substandard quality artemether-lumefantrine was 18.9% (14/74; 95% CI: 11.4-29.7). Substandard quality AL was significantly associated with setting (p = 0.002). A total of 10 samples (13.5%) failed artemether content assay test while, 4 samples (5.4%, 4/74) failed the lumefantrine assay test. One sample from a high malaria transmission setting failed both artemether and lumefantrine assay content test. Of the samples that failed artemether assay test, 90% had low (< 90%) artemether content. All the samples passed visual inspection and dissolution tests. CONCLUSION Artemether-lumefantrine agents, the recommended first-line treatment for uncomplicated malaria with APIs outside the recommended pharmacopeial content assay limit is common especially in high malaria transmission settings. There is need for continuous surveillance and monitoring of the quality of artemisinin-based anti-malarials across the country by the drug regulatory agency.
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Affiliation(s)
- Moses Ocan
- Department of Pharmacology and Therapeutics, College of Health Sciences, Makerere University, P.O. Box 7072, Kampala, Uganda.
| | - Loyce Nakalembe
- Department of Pharmacology, Soroti University, P.O. Box 211, Soroti, Uganda
| | - Caroline Otike
- Data Department, Joint Clinical Research Centre, Lubowa, P. O Box 10005, Kampala, Uganda
| | - Denis Omali
- Pharmacokinetics Laboratory Unit, Infectious Disease Institute, College of Health Sciences, Makerere University, P.O. Box 22418, Kampala, Uganda
| | - Allan Buzibye
- Pharmacokinetics Laboratory Unit, Infectious Disease Institute, College of Health Sciences, Makerere University, P.O. Box 22418, Kampala, Uganda
| | - Sam Nsobya
- Department of Pathology, College of Health Sciences, Makerere University, P.O. Box 7072, Kampala, Uganda
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Buzibye A, Wools-Kaloustian K, Olagunju A, Twinomuhwezi E, Yiannoutsos C, Owen A, Neary M, Matovu J, Banturaki G, Castelnuovo B, Lamorde M, Khoo S, Waitt C, Kiragga A. Relating CYP2B6 genotype and efavirenz resistance among post-partum women living with HIV with high viremia in Uganda: a nested cross-sectional study. AIDS Res Ther 2023; 20:20. [PMID: 37004096 PMCID: PMC10064798 DOI: 10.1186/s12981-023-00514-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 03/24/2023] [Indexed: 04/03/2023] Open
Abstract
BACKGROUND We investigated the association between CYP2B6 polymorphisms and efavirenz drug resistance among women living with HIV who started on antiretroviral therapy during pregnancy and with high viremia during post-partum. METHODS This was a cross-sectional study of women with viral loads greater than 1000 copies/ml who were at least 6 weeks postpartum. Sanger sequencing was used to detect resistant mutations, as well as host genotyping, and efavirenz resistance was compared among the metabolizer genotypes. RESULTS Over the course of one year (July 2017-July 2018), 322 women were screened, with 110 (34.2%) having viral loads of 1000 copies/ml and 62 having whole blood available for genotyping. Fifty-nine of these women had both viral resistance and human host genotypic results. Efavirenz resistance according to metabolizer genotype was; 47% in slow, 34% in extensive and 28% in intermediate metabolizers, but the difference was not statistically significant due to the small sample size. CONCLUSIONS There was no statistically significant difference in EFV resistance between EFV metabolizer genotypes in women who started antiretroviral therapy during pregnancy and had high viremia in the postpartum period. However, a numerical trend was discovered, which calls for confirmation in a large, well-designed, statistically powered study.
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Affiliation(s)
- Allan Buzibye
- Research Department, Infectious Diseases Institute, College of Health Sciences, Makerere University, P. O. Box 22418, Kampala, Uganda.
| | | | - Adeniyi Olagunju
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK
| | - Ellon Twinomuhwezi
- Research Department, Infectious Diseases Institute, College of Health Sciences, Makerere University, P. O. Box 22418, Kampala, Uganda
| | | | - Andrew Owen
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK
| | - Megan Neary
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK
| | - Joshua Matovu
- Research Department, Infectious Diseases Institute, College of Health Sciences, Makerere University, P. O. Box 22418, Kampala, Uganda
| | - Grace Banturaki
- Research Department, Infectious Diseases Institute, College of Health Sciences, Makerere University, P. O. Box 22418, Kampala, Uganda
| | - Barbara Castelnuovo
- Research Department, Infectious Diseases Institute, College of Health Sciences, Makerere University, P. O. Box 22418, Kampala, Uganda
| | - Mohammed Lamorde
- Research Department, Infectious Diseases Institute, College of Health Sciences, Makerere University, P. O. Box 22418, Kampala, Uganda
| | - Saye Khoo
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK
| | - Catriona Waitt
- Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK
| | - Agnes Kiragga
- Research Department, Infectious Diseases Institute, College of Health Sciences, Makerere University, P. O. Box 22418, Kampala, Uganda
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Mulindwa F, Castelnuovo B, Brusselaers N, Bollinger R, Rhein J, Edrisa M, Buzibye A, Amutuhaire W, Yendewa G, Nabaggala S, Odongpiny ELA, Kiguba R, Nakawooza A, Dujanga S, Nabwana M, Schwarz JM. Blood glucose trajectories and incidence of diabetes mellitus in Ugandan people living with HIV initiated on dolutegravir. AIDS Res Ther 2023; 20:15. [PMID: 36915103 PMCID: PMC10009965 DOI: 10.1186/s12981-023-00510-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 03/07/2023] [Indexed: 03/14/2023] Open
Abstract
BACKGROUND Following reports of anti-retroviral therapy (ART) experienced Ugandan people living with HIV (PLHIV) presenting with diabetic ketoacidosis weeks to months following a switch to dolutegravir (DTG), the Uganda Ministry of Health recommended withholding DTG in both ART naïve and experienced PLHIV with diabetes mellitus (T2DM), as well as 3-monthly blood glucose monitoring for patients with T2DM risk factors. We sought to determine if the risk of T2DM is indeed heightened in nondiabetic ART naïve Ugandan PLHIV over the first 48 weeks on DTG. METHODS Between January and October 2021, 243 PLHIV without T2DM were initiated on DTG based ART for 48 weeks. Two-hour oral glucose tolerance tests (2-h OGTT) were performed at baseline, 12, and 36 weeks; fasting blood glucose (FBG) was measured at 24 and 48 weeks. The primary outcome was the incidence of T2DM. Secondary outcomes included: incidence of pre-Diabetes Mellitus (pre-DM), median change in FBG from baseline to week 48 and 2-h blood glucose (2hBG) from baseline to week 36. Linear regression models were used to determine adjusted differences in FBG and 2hBG from baseline to weeks 48 and 36 respectively. RESULTS The incidence of T2DM was 4 cases per 1000 PY (1/243) and pre-DM, 240 cases per 1000 person years (PY) (54/243). There was a significant increase in FBG from baseline to week 48 [median change from baseline (FBG): 3.6 mg/dl, interquartile range (IQR): - 3.6, 7.2, p-value (p) = 0.005] and significant reduction in 2hBG (2hBG: - 7.26 mg/dl, IQR: - 21.6, 14.4, p = 0.024) at week 36. A high CD4 count and increased waist circumference were associated with 2hBG increase at week 36. CONCLUSION We demonstrated a low incidence of T2DM in Ugandan ART-naïve patients receiving DTG. We also demonstrated that longitudinal changes in BG were independent of conventional risk factors of T2DM in the first 48 weeks of therapy. Restricting the use of dolutegravir in Ugandan ART naïve patients perceived to be high risk for diabetes mellitus may be unwarranted.
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Affiliation(s)
- Frank Mulindwa
- Capacity Building Program, Makerere University Infectious Diseases Institute, Kampala, Uganda.
- Global Health Institute, Antwerp University, Antwerp, Belgium.
| | - Barbara Castelnuovo
- Capacity Building Program, Makerere University Infectious Diseases Institute, Kampala, Uganda
| | - Nele Brusselaers
- Global Health Institute, Antwerp University, Antwerp, Belgium
- Centre for Translational Microbiome Research, Department of Microbiology, Tumour and Cell Biology, Karolinska University, Stockholm, Sweden
| | | | - Joshua Rhein
- School of Medicine, Division of Infectious Diseases, University of Minnesota, Minneapolis, MN, USA
| | - Mutebi Edrisa
- Internal Medicine Department, Makerere University, College of Health Sciences, Kampala, Uganda
| | - Allan Buzibye
- Capacity Building Program, Makerere University Infectious Diseases Institute, Kampala, Uganda
| | | | - George Yendewa
- Department of Internal Medicine, Case Western Reserve University, Cleveland, USA
| | - Sarah Nabaggala
- Capacity Building Program, Makerere University Infectious Diseases Institute, Kampala, Uganda
| | | | - Ronald Kiguba
- Department of Pharmacology and Therapeutics, College of Health Sciences Makerere University, Kampala, Uganda
| | - Aisha Nakawooza
- Capacity Building Program, Makerere University Infectious Diseases Institute, Kampala, Uganda
| | - Simon Dujanga
- Internal Medicine Department, Makerere University, College of Health Sciences, Kampala, Uganda
| | - Martin Nabwana
- Makerere University Johns Hopkins Collaboration HIV Clinic, Kampala, Uganda
| | - Jean-Marc Schwarz
- School of Medicine, University of California San Francisco, San Francisco, USA
- Department of Basic Sciences, Touro University California College of Osteopathic Medicine, Vallejo, CA, USA
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Sekaggya-Wiltshire C, Nabisere R, Musaazi J, Otaalo B, Aber F, Alinaitwe L, Nampala J, Najjemba L, Buzibye A, Omali D, Gausi K, Kengo A, Lamorde M, Aarnoutse R, Denti P, Dooley KE, Sloan DJ. Decreased Dolutegravir and Efavirenz Concentrations With Preserved Virological Suppression in Patients With Tuberculosis and Human Immunodeficiency Virus Receiving High-Dose Rifampicin. Clin Infect Dis 2023; 76:e910-e919. [PMID: 35861296 DOI: 10.1093/cid/ciac585] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/27/2022] [Accepted: 07/13/2022] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Higher doses of rifampicin may improve treatment outcomes and reduce the duration of tuberculosis (TB) therapy. However, drug-drug interactions with antiretroviral therapy (ART) and safety in people with human immunodeficiency virus (HIV) have not been evaluated. METHODS This was a randomized, open-label trial where newly diagnosed TB patients were randomized to higher (35 mg/kg) or standard (10 mg/kg) daily-dose rifampicin. ART treatment-naive patients were randomized to dolutegravir- or efavirenz-based ART. At week 6, trough dolutegravir or mid-dose efavirenz plasma concentrations were assayed. HIV viral load was measured at week 24. RESULTS Among 128 patients randomized, the median CD4 count was 191 cells/mm3. The geometric mean ratio (GMR) for trough dolutegravir concentrations on higher- vs standard-dose rifampicin was 0.57 (95% confidence interval [CI], .34-.97; P = .039) and the GMR for mid-dose efavirenz was 0.63 (95% CI, .38-1.07; P = .083). There was no significant difference in attainment of targets for dolutegravir trough or efavirenz mid-dose concentrations between rifampicin doses. The incidence of HIV treatment failure at week 24 was similar between rifampicin doses (14.9% vs 14.0%, P = .901), as was the incidence of drug-related grade 3-4 adverse events (9.8% vs 6%). At week 8, fewer patients remained sputum culture positive on higher-dose rifampicin (18.6% vs 37.0%, P = .063). CONCLUSIONS Compared with standard-dose rifampicin, high-dose rifampicin reduced dolutegravir and efavirenz exposures, but HIV suppression was similar across treatment arms. Higher-dose rifampicin was well tolerated among people with HIV and associated with a trend toward faster sputum culture conversion. CLINICAL TRIALS REGISTRATION NCT03982277.
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Affiliation(s)
- Christine Sekaggya-Wiltshire
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda.,Department of Medicine, Mulago National Referral Hospital, Kampala, Uganda
| | - Ruth Nabisere
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Joseph Musaazi
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Brian Otaalo
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Florence Aber
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Lucy Alinaitwe
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Juliet Nampala
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Letisha Najjemba
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Allan Buzibye
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Denis Omali
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Kamunkhwala Gausi
- Department of Medicine, Division of Clinical Pharmacology, University of Cape Town, Cape Town, South Africa
| | - Allan Kengo
- Department of Medicine, Division of Clinical Pharmacology, University of Cape Town, Cape Town, South Africa
| | - Mohammed Lamorde
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Rob Aarnoutse
- Department of Pharmacy and Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegene, The Netherlands
| | - Paolo Denti
- Department of Medicine, Division of Clinical Pharmacology, University of Cape Town, Cape Town, South Africa
| | - Kelly E Dooley
- Department of Medicine, Division of Clinical Pharmacology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Derek J Sloan
- Division of Infection and Global Health, School of Medicine, University of St. Andrews, St. Andrews, United Kingdom
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10
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Omali D, Buzibye A, Kwizera R, Byakika-Kibwika P, Namakula R, Matovu J, Mbabazi O, Mande E, Sekaggya-Wiltshire C, Nakanjako D, Gutteck U, McAdam K, Easterbrook P, Kambugu A, Fehr J, Castelnuovo B, Manabe YC, Lamorde M, Mueller D, Merry C. Building clinical pharmacology laboratory capacity in low- and middle-income countries: Experience from Uganda. Afr J Lab Med 2023; 12:1956. [PMID: 36873289 PMCID: PMC9982508 DOI: 10.4102/ajlm.v12i1.1956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 11/30/2022] [Indexed: 02/05/2023] Open
Abstract
Background Research and clinical use of clinical pharmacology laboratories are limited in low- and middle-income countries. We describe our experience in building and sustaining laboratory capacity for clinical pharmacology at the Infectious Diseases Institute, Kampala, Uganda. Intervention Existing laboratory infrastructure was repurposed, and new equipment was acquired. Laboratory personnel were hired and trained to optimise, validate, and develop in-house methods for testing antiretroviral, anti-tuberculosis and other drugs, including 10 high-performance liquid chromatography methods and four mass spectrometry methods. We reviewed all research collaborations and projects for which samples were assayed in the laboratory from January 2006 to November 2020. We assessed laboratory staff mentorship from collaborative relationships and the contribution of research projects towards human resource development, assay development, and equipment and maintenance costs. We further assessed the quality of testing and use of the laboratory for research and clinical care. Lessons learnt Fourteen years post inception, the clinical pharmacology laboratory had contributed significantly to the overall research output at the institute by supporting 26 pharmacokinetic studies. The laboratory has actively participated in an international external quality assurance programme for the last four years. For clinical care, a therapeutic drug monitoring service is accessible to patients living with HIV at the Adult Infectious Diseases clinic in Kampala, Uganda. Recommendations Driven primarily by research projects, clinical pharmacology laboratory capacity was successfully established in Uganda, resulting in sustained research output and clinical support. Strategies implemented in building capacity for this laboratory may guide similar processes in other low- and middle-income countries.
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Affiliation(s)
- Denis Omali
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Allan Buzibye
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Richard Kwizera
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Pauline Byakika-Kibwika
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda.,Department of Medicine, School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Rhoda Namakula
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Joshua Matovu
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Olive Mbabazi
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Emmanuel Mande
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | | | - Damalie Nakanjako
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda.,Department of Medicine, School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Ursula Gutteck
- Department of Clinical Chemistry, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Keith McAdam
- Department of Clinical Research, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Philippa Easterbrook
- Department of Human Immunodeficiency Virus, World Health Organization, Geneva, Switzerland
| | - Andrew Kambugu
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Jan Fehr
- Department of Clinical Chemistry, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Barbara Castelnuovo
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Yukari C Manabe
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda.,Division of Infectious Diseases, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Mohammed Lamorde
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Daniel Mueller
- Department of Clinical Chemistry, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Concepta Merry
- Department of Pharmacology and Therapeutics, Trinity College Dublin, Dublin, Ireland
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11
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Mayanja Y, Kamacooko O, Lunkuse JF, Muturi-Kioi V, Buzibye A, Omali D, Chinyenze K, Kuteesa M, Kaleebu P, Price MA. Oral pre-exposure prophylaxis preference, uptake, adherence and continuation among adolescent girls and young women in Kampala, Uganda: a prospective cohort study. J Int AIDS Soc 2022; 25:e25909. [PMID: 35543110 PMCID: PMC9092160 DOI: 10.1002/jia2.25909] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 04/22/2022] [Indexed: 11/08/2022] Open
Abstract
Introduction Oral pre‐exposure prophylaxis (PrEP) has been scaled up; however, data from real‐world settings are limited. We studied oral PrEP preference, uptake, adherence and continuation among adolescent girls and young women (AGYW) vulnerable to HIV in sub‐Saharan Africa. Methods We conducted a prospective cohort study among 14‐ to 24‐year‐old AGYW without HIV who were followed for 12 months in Kampala, Uganda. Within at least 14 days of enrolment, they received two education sessions, including demonstrations on five biomedical interventions that are; available (oral PrEP), will be available soon (long‐acting injectable PrEP and anti‐retroviral vaginal ring) and in development (PrEP implant and HIV vaccine). Information included mode and frequency of delivery, potential side effects and method availability. Volunteers ranked interventions, 1 = most preferred to 5 = least preferred. Oral PrEP was “preferred” if ranked among the top two choices. All were offered oral PrEP, and determinants of uptake assessed using Poisson regression with robust error variance. Adherence was assessed using plasma tenofovir levels and self‐reports. Results Between January and October 2019, 532 volunteers were screened; 285 enrolled of whom 265 received two education sessions. Mean age was 20 years (SD±2.2), 92.8% reported paid sex, 20.4% reported ≥10 sexual partners in the past 3 months, 38.5% used hormonal contraceptives, 26.9% had chlamydia, gonorrhoea and/or active syphilis. Of 265 volunteers, 47.6% preferred oral PrEP. Willingness to take PrEP was 90.2%; however, uptake was 30.6% (n = 81). Following enrolment, 51.9% started PrEP on day 14 (same day PrEP offered), 20.9% within 30 days and 27.2% after 30 days. PrEP uptake was associated with more sexual partners in the past 3 months: 2–9 partners (aRR = 2.36, 95% CI: 1.20–4.63) and ≥10 partners (aRR 4.70, 95% CI 2.41–9.17); oral PrEP preference (aRR 1.53, 95% CI 1.08–2.19) and being separated (aRR 1.55, 95% CI 1.04–2.33). Of 100 samples from 49 volunteers during follow up, 19 had quantifiable tenofovir levels (>10 μg/L) of which only three were protective (>40 μg/L). Conclusions Half of AGYW preferred oral PrEP, uptake and adherence were low, uptake was associated with sexual behavioural risk and oral PrEP preference. Development of alternative biomedical products should be expedited to meet end‐user preferences and, community delivery promoted during restricted movement.
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Affiliation(s)
- Yunia Mayanja
- Medical Research Council/Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine (MRC/UVRI & LSHTM), Uganda Research Unit, Entebbe, Uganda
| | - Onesmus Kamacooko
- Medical Research Council/Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine (MRC/UVRI & LSHTM), Uganda Research Unit, Entebbe, Uganda
| | - Jane Frances Lunkuse
- Medical Research Council/Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine (MRC/UVRI & LSHTM), Uganda Research Unit, Entebbe, Uganda
| | | | - Allan Buzibye
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Denis Omali
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | | | | | - Pontiano Kaleebu
- Medical Research Council/Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine (MRC/UVRI & LSHTM), Uganda Research Unit, Entebbe, Uganda
| | - Matt A Price
- IAVI, New York, New York, USA.,Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, USA
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12
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Cresswell FV, Meya DB, Kagimu E, Grint D, te Brake L, Kasibante J, Martyn E, Rutakingirwa M, Quinn CM, Okirwoth M, Tugume L, Ssembambulidde K, Musubire AK, Bangdiwala AS, Buzibye A, Muzoora C, Svensson EM, Aarnoutse R, Boulware DR, Elliott AM. High-Dose Oral and Intravenous Rifampicin for the Treatment of Tuberculous Meningitis in Predominantly Human Immunodeficiency Virus (HIV)-Positive Ugandan Adults: A Phase II Open-Label Randomized Controlled Trial. Clin Infect Dis 2021; 73:876-884. [PMID: 33693537 PMCID: PMC8423465 DOI: 10.1093/cid/ciab162] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND High-dose rifampicin may improve outcomes of tuberculous meningitis (TBM). Little safety or pharmacokinetic (PK) data exist on high-dose rifampicin in human immunodeficiency virus (HIV) coinfection, and no cerebrospinal fluid (CSF) PK data exist from Africa. We hypothesized that high-dose rifampicin would increase serum and CSF concentrations without excess toxicity. METHODS In this phase II open-label trial, Ugandan adults with suspected TBM were randomized to standard-of-care control (PO-10, rifampicin 10 mg/kg/day), intravenous rifampicin (IV-20, 20 mg/kg/day), or high-dose oral rifampicin (PO-35, 35 mg/kg/day). We performed PK sampling on days 2 and 14. The primary outcomes were total exposure (AUC0-24), maximum concentration (Cmax), CSF concentration, and grade 3-5 adverse events. RESULTS We enrolled 61 adults, 92% were living with HIV, median CD4 count was 50 cells/µL (interquartile range [IQR] 46-56). On day 2, geometric mean plasma AUC0-24hr was 42.9·h mg/L with standard-of-care 10 mg/kg dosing, 249·h mg/L for IV-20 and 327·h mg/L for PO-35 (P < .001). In CSF, standard of care achieved undetectable rifampicin concentration in 56% of participants and geometric mean AUC0-24hr 0.27 mg/L, compared with 1.74 mg/L (95% confidence interval [CI] 1.2-2.5) for IV-20 and 2.17 mg/L (1.6-2.9) for PO-35 regimens (P < .001). Achieving CSF concentrations above rifampicin minimal inhibitory concentration (MIC) occurred in 11% (2/18) of standard-of-care, 93% (14/15) of IV-20, and 95% (18/19) of PO-35 participants. Higher serum and CSF levels were sustained at day 14. Adverse events did not differ by dose (P = .34). CONCLUSIONS Current international guidelines result in sub-therapeutic CSF rifampicin concentration for 89% of Ugandan TBM patients. High-dose intravenous and oral rifampicin were safe and respectively resulted in exposures ~6- and ~8-fold higher than standard of care, and CSF levels above the MIC.
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Affiliation(s)
- Fiona V Cresswell
- Clinical Research Department, London School of Hygiene and Tropical Medicine, Keppel Street, London, United Kingdom,Infectious Diseases Institute, Makerere University, Kampala, Uganda,Medical Research Council - Uganda Virus Research Institute – LSHTM Uganda Research Unit, Entebbe, Uganda,Correspondence: F. Cresswell, Clinical Research Department, London School of Hygiene and Tropical Medicine, Keppel St, London, WC1E 7HT, UK ()
| | - David B Meya
- Infectious Diseases Institute, Makerere University, Kampala, Uganda
| | - Enock Kagimu
- Infectious Diseases Institute, Makerere University, Kampala, Uganda
| | - Daniel Grint
- Tropical Epidemiology Group, London School of Hygiene and Tropical Medicine, Keppel Street, London, United Kingdom
| | - Lindsey te Brake
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Centre, The Netherlands
| | - John Kasibante
- Infectious Diseases Institute, Makerere University, Kampala, Uganda
| | - Emily Martyn
- Clinical Research Department, London School of Hygiene and Tropical Medicine, Keppel Street, London, United Kingdom
| | | | - Carson M Quinn
- University of California, San Francisco, San Francisco, California, USA
| | - Micheal Okirwoth
- Infectious Diseases Institute, Makerere University, Kampala, Uganda
| | - Lillian Tugume
- Infectious Diseases Institute, Makerere University, Kampala, Uganda
| | | | - Abdu K Musubire
- Infectious Diseases Institute, Makerere University, Kampala, Uganda
| | - Ananta S Bangdiwala
- Division of Biostatistics, University of Minnesota, Minneapolis, Minneapolis, Minnesota, USA
| | - Allan Buzibye
- Infectious Diseases Institute, Makerere University, Kampala, Uganda
| | - Conrad Muzoora
- Mbarara University of Science and Technology, Mbarara, Uganda
| | - Elin M Svensson
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Centre, The Netherlands,Department of Pharmacy, Uppsala University, Sweden
| | - Rob Aarnoutse
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Centre, The Netherlands
| | - David R Boulware
- Division of Infectious Diseases and International Medicine, University of Minnesota, Minneapolis, Minneapolis, Minnesota, USA
| | - Alison M Elliott
- Clinical Research Department, London School of Hygiene and Tropical Medicine, Keppel Street, London, United Kingdom,Medical Research Council - Uganda Virus Research Institute – LSHTM Uganda Research Unit, Entebbe, Uganda
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13
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Nakato R, Tumwine JK, Nanzigu S, Naluyima S, Buzibye A, Alinayitwe L, Makoha C, Mukonzo JK. Antiretroviral drugs found in pork on Ugandan market: Implications for HIV/AIDS treatment. One Health 2020; 9:100125. [PMID: 32195312 PMCID: PMC7076142 DOI: 10.1016/j.onehlt.2020.100125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 03/05/2020] [Accepted: 03/06/2020] [Indexed: 11/24/2022] Open
Affiliation(s)
- Ritah Nakato
- Department of Pharmacology & Therapeutics, Makerere University College of Health Sciences, Uganda
| | - James K Tumwine
- Department of pediatrics, Makerere University College of Health Sciences, Uganda
| | - Sarah Nanzigu
- Department of Pharmacology & Therapeutics, Makerere University College of Health Sciences, Uganda
| | - Sandra Naluyima
- Department of Pharmacology & Therapeutics, Makerere University College of Health Sciences, Uganda
| | - Allan Buzibye
- Department of Pharmacology & Therapeutics, Makerere University College of Health Sciences, Uganda
| | | | - Carol Makoha
- Department of Clinical Epidemiology, Makerere University College of Health Sciences, Uganda
| | - Jackson K Mukonzo
- Department of Pharmacology & Therapeutics, Makerere University College of Health Sciences, Uganda
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14
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von Braun A, Castelnuovo B, Ledergerber B, Cusato J, Buzibye A, Kambugu A, Fehr J, Calcagno A, Lamorde M, Sekaggya-Wiltshire C. High efavirenz serum concentrations in TB/HIV-coinfected Ugandan adults with a CYP2B6 516 TT genotype on anti-TB treatment. J Antimicrob Chemother 2020; 74:135-138. [PMID: 30239753 DOI: 10.1093/jac/dky379] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 08/24/2018] [Indexed: 01/15/2023] Open
Abstract
Objectives To report the efavirenz serum concentrations in TB/HIV-coinfected Ugandan adults on concomitant anti-TB treatment and analyse factors associated with elevated concentrations in this specific population. Methods Serum efavirenz concentrations in TB/HIV-coinfected Ugandan adults on efavirenz-based ART (600 mg daily) were measured onsite at 2, 8, 12 and 24 weeks of concomitant anti-TB treatment, including rifampicin. Genetic analysis was done retrospectively through real-time PCR by allelic discrimination (CYP2B6 516G>T, rs3745274). Univariable and multivariable logistic regression analyses were done to assess factors potentially associated with elevated efavirenz serum concentrations. Results A total of 166 patients were included in the analysis. The median age was 34 (IQR = 30-40) years, 99 (59.6%) were male, the median CD4 cell count was 195 (IQR = 71-334) cells/mm3 and the median BMI was 19 (IQR = 17.6-21.5) kg/m2. Almost half of all patients (82, 49.4%) had at least one efavirenz serum concentration above the reference range of 4 mg/L. The serum efavirenz concentrations of patients with genotype CYP2B6 516 TT were consistently above 4 mg/L and significantly higher than those of patients with GG/GT genotypes: CYP2B6 516 TT 9.6 mg/L (IQR = 7.3-13.3) versus CYP2B6 516 GT 3.4 mg/L (IQR = 2.1-5.1) and CYP2B6 516 GG 2.6 mg/L (IQR = 1.3-4.0) (Wilcoxon rank-sum test: P < 0.0001). Conclusions A large proportion of our study participants had at least one efavirenz serum concentration >4 mg/L. The CYP2B6 516 TT genotype was the strongest predictor of high concentration. Physicians should be vigilant that efavirenz serum concentrations may be elevated in patients on concomitant anti-TB treatment and that individualized care is warranted whenever possible.
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Affiliation(s)
- Amrei von Braun
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda.,Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Barbara Castelnuovo
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Bruno Ledergerber
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Jessica Cusato
- Unit of Infectious Diseases, Department of Medical Sciences, University of Torino, Torino, Italy
| | - Allan Buzibye
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Andrew Kambugu
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Jan Fehr
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.,Department of Public Health, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - Andrea Calcagno
- Unit of Infectious Diseases, Department of Medical Sciences, University of Torino, Torino, Italy
| | - Mohammed Lamorde
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
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15
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Buzibye A, Musaazi J, von Braun A, Nanzigu S, Sekaggya-Wiltshire C, Kambugu A, Fehr J, Lamorde M, Gutteck U, Muller D, Sowinski S, Reynolds SJ, Castelnuovo B. Antiretroviral concentration measurements as an additional tool to manage virologic failure in resource limited settings: a case control study. AIDS Res Ther 2019; 16:39. [PMID: 31810468 PMCID: PMC6898957 DOI: 10.1186/s12981-019-0255-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 11/27/2019] [Indexed: 12/20/2022] Open
Abstract
Background Several studies demonstrate a correlation between sub-therapeutic concentrations of antiretroviral drugs and virologic failure. We examined the sensitivity, specificity and predictive values of sub-therapeutic drug levels in predicting viralogic failure. Methods This was a case control study with cases being samples of participants with virologic failure, and controls samples of participants with virologic suppression. We analyzed samples obtained from participants that had been on antiretroviral treatment (ART) for at least 6 months. Virologic failure was defined as HIV-RNA viral load ≥ 1000 copies/ml. Sub-therapeutic drug levels were defined according to published reference cutoffs. The diagnostic validity of drug levels for virologic failure was assessed using plasma viral loads as a gold standard. Results Sub-therapeutic ART concentrations explained only 38.2% of virologic failure with a probability of experiencing virologic failure of 0.66 in a patient with low drug levels versus 0.25 for participants with measurements within or above the normal range. Approximately 90% of participants with ART concentrations above the lower clinical cut off did not have virologic failure. Conclusions These results support prior indication for therapeutic drug monitoring in cases of suspected virologic failure.
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16
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Sekaggya-Wiltshire C, von Braun A, Lamorde M, Ledergerber B, Buzibye A, Henning L, Musaazi J, Gutteck U, Denti P, de Kock M, Jetter A, Byakika-Kibwika P, Eberhard N, Matovu J, Joloba M, Muller D, Manabe YC, Kamya MR, Corti N, Kambugu A, Castelnuovo B, Fehr JS. Delayed Sputum Culture Conversion in Tuberculosis-Human Immunodeficiency Virus-Coinfected Patients With Low Isoniazid and Rifampicin Concentrations. Clin Infect Dis 2018; 67:708-716. [PMID: 29514175 PMCID: PMC6094003 DOI: 10.1093/cid/ciy179] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Accepted: 03/01/2018] [Indexed: 01/23/2023] Open
Abstract
Background The relationship between concentrations of antituberculosis drugs, sputum culture conversion, and treatment outcome remains unclear. We sought to determine the association between antituberculosis drug concentrations and sputum conversion among patients coinfected with tuberculosis and human immunodeficiency virus (HIV) and receiving first-line antituberculosis drugs. Methods We enrolled HIV-infected Ugandans with pulmonary tuberculosis. Estimation of first-line antituberculosis drug concentrations was performed 1, 2, and 4 hours after drug intake at 2, 8, and 24 weeks of tuberculosis treatment. Serial sputum cultures were performed at each visit. Time-to-event analysis was used to determine factors associated with sputum culture conversion. Results We enrolled 268 HIV-infected patients. Patients with low isoniazid and rifampicin concentrations were less likely to have sputum culture conversion before the end of tuberculosis treatment (hazard ratio, 0.54; 95% confidence interval, .37-.77; P = .001) or by the end of follow-up (0.61; .44-.85; P = .003). Patients in the highest quartile for area under the rifampicin and isoniazid concentration-time curves for were twice as likely to experience sputum conversion than those in the lowest quartile. Rifampicin and isoniazid concentrations below the thresholds and weight <55 kg were both risk factors for unfavorable tuberculosis treatment outcomes. Only 4.4% of the participants had treatment failure. Conclusion Although low antituberculosis drug concentrations did not translate to a high proportion of patients with treatment failure, the association between low concentrations of rifampicin and isoniazid and delayed culture conversion may have implications for tuberculosis transmission. Clinical Trials Registration: NCT01782950.
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Affiliation(s)
| | - Amrei von Braun
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Mohammed Lamorde
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Bruno Ledergerber
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Allan Buzibye
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Lars Henning
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Switzerland
- Division of Tropical Health and Medicine, James Cook University, Queensland, Australia
| | - Joseph Musaazi
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Ursula Gutteck
- Department of Clinical Chemistry, University Hospital Zurich, University of Zurich, Switzerland
| | - Paolo Denti
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, South Africa
| | - Miné de Kock
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, South Africa
| | - Alexander Jetter
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, University of Zurich, Switzerland
| | - Pauline Byakika-Kibwika
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
- School of Medicine, Makerere University, Kampala, Uganda
| | - Nadia Eberhard
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Joshua Matovu
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Moses Joloba
- School of Biomedical Sciences, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Daniel Muller
- Department of Clinical Chemistry, University Hospital Zurich, University of Zurich, Switzerland
| | - Yukari C Manabe
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore
| | - Moses R Kamya
- School of Medicine, Makerere University, Kampala, Uganda
| | - Natascia Corti
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, University of Zurich, Switzerland
| | - Andrew Kambugu
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Barbara Castelnuovo
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Jan S Fehr
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Switzerland
- Department of Public Health at Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Switzerland
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17
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Sekaggya-Wiltshire C, von Braun A, Scherrer AU, Manabe YC, Buzibye A, Muller D, Ledergerber B, Gutteck U, Corti N, Kambugu A, Byakika-Kibwika P, Lamorde M, Castelnuovo B, Fehr J, Kamya MR. Anti-TB drug concentrations and drug-associated toxicities among TB/HIV-coinfected patients. J Antimicrob Chemother 2017; 72:1172-1177. [PMID: 28108678 DOI: 10.1093/jac/dkw534] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 11/11/2016] [Indexed: 12/16/2022] Open
Abstract
Background Toxicities due to anti-TB treatment frequently occur among TB/HIV-coinfected patients. Objectives To determine the association between anti-TB drug concentrations and the occurrence of hepatotoxicity and peripheral neuropathy among TB/HIV-coinfected patients. Methods TB/HIV-coinfected patients were started on standard dose anti-TB treatment according to WHO guidelines. Anti-TB drug concentrations were measured using HPLC 1, 2 and 4 h after drug intake at 2, 8 and 24 weeks following initiation of TB treatment. Participants were assessed for hepatotoxicity using Division of AIDS toxicity tables and for peripheral neuropathy using clinical assessment of tendon reflexes, vibration sensation or symptoms. Cox regression was used to determine the association between toxicities and drug concentrations. Results Of the 268 patients enrolled, 58% were male with a median age of 34 years. Participants with no hepatotoxicity or mild, moderate and severe hepatotoxicity had a median C max of 6.57 (IQR 4.83-9.41) μg/mL, 7.39 (IQR 5.10-10.20) μg/mL, 7.00 (IQR 6.05-10.95) μg/mL and 3.86 (IQR 2.81-14.24) μg/mL, respectively. There was no difference in the median C max of rifampicin among those who had hepatotoxicity and those who did not ( P = 0.322). There was no difference in the isoniazid median C max among those who had peripheral neuropathy 2.34 (1.52-3.23) μg/mL and those who did not 2.21 (1.45-3.11) μg/mL ( P = 0.49). Conclusions There was no association between rifampicin concentrations and hepatotoxicity or isoniazid concentrations and peripheral neuropathy among TB/HIV-coinfected patients.
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Affiliation(s)
- C Sekaggya-Wiltshire
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - A von Braun
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - A U Scherrer
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland.,Institute for Medical Virology, University of Zurich, Zurich, Switzerland
| | - Y C Manabe
- Division of Infectious Disease, Johns Hopkins University, Baltimore, MD, USA
| | - A Buzibye
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - D Muller
- Department of Clinical Chemistry, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - B Ledergerber
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - U Gutteck
- Department of Clinical Chemistry, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - N Corti
- Division of Clinical Pharmacology and Toxicology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - A Kambugu
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - P Byakika-Kibwika
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda.,School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
| | - M Lamorde
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - B Castelnuovo
- Infectious Diseases Institute, College of Health Sciences, Makerere University, Kampala, Uganda
| | - J Fehr
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - M R Kamya
- School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
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18
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Sekaggya-Wiltshire C, Castelnuovo B, von Braun A, Musaazi J, Muller D, Buzibye A, Gutteck U, Henning L, Ledergerber B, Corti N, Lamorde M, Fehr J, Kambugu A. Cohort profile of a study on outcomes related to tuberculosis and antiretroviral drug concentrations in Uganda: design, methods and patient characteristics of the SOUTH study. BMJ Open 2017; 7:e014679. [PMID: 28928173 PMCID: PMC5623357 DOI: 10.1136/bmjopen-2016-014679] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
PURPOSE Tuberculosis (TB) is a leading cause of death among people living with HIV in sub-Saharan Africa. Several factors influence the efficacy of TB treatment by leading to suboptimal drug concentrations and subsequently affecting treatment outcome. The aim of this cohort is to determine the association between anti-TB drug concentrations and TB treatment outcomes. PARTICIPANTS Patients diagnosed with new pulmonary TB at the integrated TB-HIV outpatient clinic in Kampala, Uganda, were enrolled into the study and started on first-line anti-TB treatment. FINDINGS TO DATE Between April 2013 and April 2015, the cohort enrolled 268 patients coinfected with TB/HIV ; 57.8% are male with a median age of 34 years (IQR 29-40). The median time between the diagnosis of HIV and the diagnosis of TB is 2 months (IQR 0-22.5). The majority of the patients are antiretroviral therapy naive (75.4%). Our population is severely immunosuppressed with a median CD4 cell count at enrolment of 163 cells/µL (IQR 46-298). Ninety-nine per cent of the patients had a diagnosis of pulmonary TB confirmed by sputum microscopy, Xpert/RIF or culture and 203 (75.7%) have completed TB treatment with 5099 aliquots of blood collected for pharmacokinetic analysis. FUTURE PLANS This cohort provides a large database of well-characterised patients coinfected with TB/HIV which will facilitate the description of the association between serum drug concentrations and TB treatment outcomes as well as provide a research platform for future substudies including evaluation of virological outcomes. TRIAL REGISTRATION NUMBER NCT01782950; Pre-results.
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Affiliation(s)
| | - Barbara Castelnuovo
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Amrei von Braun
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
- Division of Infectious Diseases and Infection Control, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Joseph Musaazi
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Daniel Muller
- Department of Clinical Chemistry, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Allan Buzibye
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Ursula Gutteck
- Department of Clinical Chemistry, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Lars Henning
- Division of Infectious Diseases and Infection Control, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Bruno Ledergerber
- Division of Infectious Diseases and Infection Control, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Natascia Corti
- Division of Clinical Pharmacology and Toxicology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Mohammed Lamorde
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Jan Fehr
- Division of Infectious Diseases and Infection Control, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Andrew Kambugu
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
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19
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Scarsi KK, Darin KM, Nakalema S, Back DJ, Byakika-Kibwika P, Else LJ, Dilly Penchala S, Buzibye A, Cohn SE, Merry C, Lamorde M. Unintended Pregnancies Observed With Combined Use of the Levonorgestrel Contraceptive Implant and Efavirenz-based Antiretroviral Therapy: A Three-Arm Pharmacokinetic Evaluation Over 48 Weeks. Clin Infect Dis 2015; 62:675-682. [PMID: 26646680 PMCID: PMC4772838 DOI: 10.1093/cid/civ1001] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 11/25/2015] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Levonorgestrel subdermal implants are preferred contraceptives with an expected failure rate of <1% over 5 years. We assessed the effect of efavirenz- or nevirapine-based antiretroviral therapy (ART) coadministration on levonorgestrel pharmacokinetics. METHODS This nonrandomized, parallel group, pharmacokinetic evaluation was conducted in three groups of human immunodeficiency virus-infected Ugandan women: ART-naive (n = 17), efavirenz-based ART (n = 20), and nevirapine-based ART (n = 20). Levonorgestrel implants were inserted at baseline in all women. Blood was collected at 1, 4, 12, 24, 36, and 48 weeks. The primary endpoint was week 24 levonorgestrel concentrations, compared between the ART-naive group and each ART group by geometric mean ratio (GMR) with 90% confidence interval (CI). Secondary endpoints included week 48 levonorgestrel concentrations and unintended pregnancies. RESULTS Week 24 geometric mean levonorgestrel concentrations were 528, 280, and 710 pg/mL in the ART-naive, efavirenz, and nevirapine groups, respectively (efavirenz: ART-naive GMR, 0.53; 90% CI, .50, .55 and nevirapine: ART-naive GMR, 1.35; 90% CI, 1.29, 1.43). Week 48 levonorgestrel concentrations were 580, 247, and 664 pg/mL in the ART-naive, efavirenz, and nevirapine groups, respectively (efavirenz: ART-naive GMR, 0.43; 90% CI, .42, .44 and nevirapine: ART-naive GMR, 1.14; 90% CI, 1.14, 1.16). Three pregnancies (3/20, 15%) occurred in the efavirenz group between weeks 36 and 48. No pregnancies occurred in the ART-naive or nevirapine groups. CONCLUSIONS Within 1 year of combined use, levonorgestrel exposure was markedly reduced in participants who received efavirenz-based ART, accompanied by contraceptive failures. In contrast, nevirapine-based ART did not adversely affect levonorgestrel exposure or efficacy. CLINICAL TRIALS REGISTRATION NCT01789879.
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Affiliation(s)
- Kimberly K Scarsi
- Department of Pharmacy Practice, College of Pharmacy, University of Nebraska Medical Center, Omaha
| | - Kristin M Darin
- Center for Global Health.,Division of Infectious Diseases, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Shadia Nakalema
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - David J Back
- Department of Molecular and Clinical Pharmacology, University of Liverpool, United Kingdom
| | - Pauline Byakika-Kibwika
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Laura J Else
- Department of Molecular and Clinical Pharmacology, University of Liverpool, United Kingdom
| | - Sujan Dilly Penchala
- Department of Molecular and Clinical Pharmacology, University of Liverpool, United Kingdom
| | - Allan Buzibye
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Susan E Cohn
- Division of Infectious Diseases, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Concepta Merry
- Center for Global Health.,Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda.,Department of Medicine, Trinity College Dublin, Ireland
| | - Mohammed Lamorde
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda
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20
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Lamorde M, Fillekes Q, Sigaloff K, Kityo C, Buzibye A, Kayiwa J, Merry C, Nakatudde-Katumba L, Burger D, de Wit TFR. Therapeutic drug monitoring of nevirapine in saliva in Uganda using high performance liquid chromatography and a low cost thin-layer chromatography technique. BMC Infect Dis 2014; 14:473. [PMID: 25176164 PMCID: PMC4158037 DOI: 10.1186/1471-2334-14-473] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 08/29/2014] [Indexed: 12/05/2022] Open
Abstract
Background In resource limited settings access to laboratory monitoring of HIV treatment is limited and therapeutic drug monitoring is generally unavailable. This study aimed to evaluate nevirapine concentrations in saliva using low-cost thin-layer chromatography (TLC) and nevirapine concentrations in plasma and saliva using high performance liquid chromatography (HPLC) methods; and to correlate nevirapine plasma concentrations to HIV treatment outcomes in Ugandan patients. Methods Paired plasma and stimulated saliva samples were obtained from Ugandan, HIV-infected adults on nevirapine-based ART. Nevirapine concentrations were measured using a validated HPLC method and a novel TLC method. Plasma nevirapine concentrations <3.0 mg/L using HPLC were considered subtherapeutic. Negative/positive predictive values of different thresholds for subtherapeutic nevirapine concentrations in saliva were determined. Virologic testing and, if applicable, HIV drug resistance testing was performed. Results Median (interquartile range, IQR) age of 297 patients was 39.1 (32.8-45.2) years. Three hundred saliva and 287 plasma samples were available for analysis. Attempts failed to determine nevirapine saliva concentrations by TLC. Using HPLC, median (IQR) nevirapine concentrations in saliva and plasma were 3.40 (2.59-4.47) mg/L and 6.17 (4.79-7.96) mg/L, respectively. The mean (coefficient of variation,%) nevirapine saliva/plasma ratio was 0.58 (62%). A cut-off value of 1.60 mg/L nevirapine in saliva was associated with a negative/positive predictive value of 0.99/0.72 and a sensitivity/specificity of 87%/98% for predicting subtherapeutic nevirapine plasma concentrations, respectively. Only 5% (15/287) of patients had subtherapeutic nevirapine plasma concentrations, of which 3 patients had viral load results > 400 copies/mL. Patients with nevirapine concentrations in plasma <3.0 mg/L had an Odds Ratio of 3.29 (95% CI: 1.00 – 10.74) for virological failure (viral load >400 copies/mL). Conclusions The low-cost TLC technique for monitoring nevirapine in saliva was unsuccessful but monitoring nevirapine saliva and plasma concentrations using HPLC was shown to be feasible in the research/specialist context in Uganda. Further optimization and validation is required for the low-cost TLC technique.
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Affiliation(s)
- Mohammed Lamorde
- Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda.
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