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Abstract
Tuberculosis (TB) is one of the leading causes of mortality in children worldwide, but there remain significant challenges in diagnosing and treating TB infection and disease. Treatment of TB infection in children and adolescents is critical to prevent progression to TB disease and to prevent them from becoming the future reservoir for TB transmission. This article reviews the clinical approach to diagnosing and treating latent TB infection and pulmonary and extrapulmonary TB disease in children. Also discussed are emerging diagnostics and therapeutic regimens that aim to improve pediatric TB detection and outcomes.
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Affiliation(s)
- Devan Jaganath
- Division of Pediatric Infectious Diseases, University of California, San Francisco
| | - Jeanette Beaudry
- Division of Pediatric Infectious Diseases, Johns Hopkins University Baltimore, USA
| | - Nicole Salazar-Austin
- Division of Pediatric Infectious Diseases, Johns Hopkins University School of Medicine, 200 N Wolfe Street, Room 3147, Baltimore, MD 21287, USA.
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LaCourse SM, Richardson BA, Kinuthia J, Warr AJ, Maleche-Obimbo E, Matemo D, Cranmer LM, Mecha J, Escudero JN, Hawn TR, John-Stewart G. A Randomized Controlled Trial of Isoniazid to Prevent Mycobacterium tuberculosis Infection in Kenyan Human Immunodeficiency Virus-Exposed Uninfected Infants. Clin Infect Dis 2021; 73:e337-e344. [PMID: 32564076 PMCID: PMC8282257 DOI: 10.1093/cid/ciaa827] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 06/15/2020] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Human immunodeficiency virus (HIV)-exposed uninfected (HEU) infants in endemic settings are at high risk of tuberculosis (TB). For infants, progression from primary Mycobacterium tuberculosis (Mtb) infection to TB disease can be rapid. We assessed whether isoniazid (INH) prevents primary Mtb infection. METHODS We conducted a randomized nonblinded controlled trial enrolling HEU infants 6 weeks of age without known TB exposure in Kenya. Participants were randomized (1:1) to 12 months of daily INH (10 mg/kg) vs no INH. Primary endpoint was Mtb infection at end of 12 months, assessed by interferon-γ release assay (QuantiFERON-TB Gold Plus) and/or tuberculin skin test (TST, added 6 months after first participant exit). RESULTS Between 15 August 2016 and 6 June 2018, 416 infants were screened, with 300 (72%) randomized to INH or no INH (150 per arm); 2 were excluded due to HIV infection. Among 298 randomized HEU infants, 12-month retention was 96.3% (287/298), and 88.9% (265/298) had primary outcome data. Mtb infection prevalence at 12-month follow-up was 10.6% (28/265); 7.6% (10/132) in the INH arm and 13.5% (18/133) in the no INH arm (7.0 vs 13.4 per 100 person-years; hazard ratio, 0.53 [95% confidence interval {CI}, .24-1.14]; P = .11]), and driven primarily by TST positivity (8.6% [8/93] in INH and 18.1% [17/94] in no INH; relative risk, 0.48 [95% CI, .22-1.05]; P = .07). Frequency of severe adverse events was similar between arms (INH, 14.0% [21/150] vs no INH, 10.7% [16/150]; P = .38), with no INH-related adverse events. CONCLUSIONS Further studies evaluating TB preventive therapy to prevent or delay primary Mtb infection in HEU and other high-risk infants are warranted. CLINICAL TRIALS REGISTRATION NCT02613169.
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Affiliation(s)
- Sylvia M LaCourse
- Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, Washington, USA
- Department of Global Health, University of Washington, Seattle, Washington, USA
| | - Barbra A Richardson
- Department of Global Health, University of Washington, Seattle, Washington, USA
- Department of Biostatistics, University of Washington, Seattle, Washington, USA
| | - John Kinuthia
- Research and Programs, Kenyatta National Hospital, Nairobi, Kenya
- Department of Obstetrics and Gynaecology, Kenyatta National Hospital, Nairobi, Kenya
| | - A J Warr
- Department of Pediatrics, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | | | - Daniel Matemo
- Research and Programs, Kenyatta National Hospital, Nairobi, Kenya
| | - Lisa M Cranmer
- Department of Pediatrics, Division of Infectious Diseases, Emory University, Atlanta, Georgia, USA
- Children’s Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Jerphason Mecha
- Research and Programs, Kenyatta National Hospital, Nairobi, Kenya
| | - Jaclyn N Escudero
- Department of Global Health, University of Washington, Seattle, Washington, USA
| | - Thomas R Hawn
- Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Grace John-Stewart
- Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, Washington, USA
- Department of Global Health, University of Washington, Seattle, Washington, USA
- Department of Epidemiology, University of Washington, Seattle, Washington, USA
- Department of Pediatrics, University of Washington, Seattle, Washington, USA
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Haas DW, Podany AT, Bao Y, Swindells S, Chaisson RE, Mwelase N, Supparatpinyo K, Mohapi L, Gupta A, Benson CA, Baker P, Fletcher CV. Pharmacogenetic interactions of rifapentine plus isoniazid with efavirenz or nevirapine. Pharmacogenet Genomics 2021; 31:17-27. [PMID: 32815870 PMCID: PMC7655626 DOI: 10.1097/fpc.0000000000000417] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
OBJECTIVES The effect of rifapentine plus isoniazid on efavirenz pharmacokinetics was characterized in AIDS Clinical Trials Group protocol A5279 (NCT01404312). The present analyses characterize pharmacogenetic interactions between these drugs, and with nevirapine. METHODS A subset of HIV-positive individuals receiving efavirenz- or nevirapine-containing antiretroviral therapy in A5279 underwent pharmacokinetic evaluations at baseline, and again weeks 2 and 4 after initiating daily rifapentine plus isoniazid. Associations with polymorphisms relevant to efavirenz, nevirapine, isoniazid, and rifapentine pharmacokinetics were assessed. RESULTS Of 128 participants, 101 were evaluable for associations with rifapentine and its active 25-desacetyl metabolite, 87 with efavirenz, and 38 with nevirapine. In multivariable analyses, NAT2 slow acetylators had greater week 4 plasma concentrations of rifapentine (P = 2.6 × 10) and 25-desacetyl rifapentine (P = 7.0 × 10) among all participants, and in efavirenz and nevirapine subgroups. NAT2 slow acetylators also had greater plasma efavirenz and nevirapine concentration increases from baseline to week 4, and greater decreases from baseline in clearance. CYP2B6 poor metabolizers had greater efavirenz concentrations at all weeks and greater nevirapine concentrations at baseline. None of 47 additional polymorphisms in 11 genes were significantly associated with pharmacokinetics. CONCLUSIONS Among HIV-positive individuals receiving efavirenz or nevirapine, and who then initiated rifapentine plus isoniazid in A5279, NAT2 slow acetylators had greater rifapentine and 25-desacetyl rifapentine concentrations, and greater increases from baseline in plasma efavirenz and nevirapine concentrations. These associations are likely mediated by greater isoniazid exposure in NAT2 slow acetylators.
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Affiliation(s)
- David W Haas
- Department of Medicine, Vanderbilt University School of Medicine
| | - Anthony T Podany
- Department of Pharmacy Practice and Science, Antiviral Pharmacology Laboratory, UNMC Center for Drug Discovery, University of Nebraska Medical Center, Omaha
| | - Yajing Bao
- Statistical and Data Analysis Center, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Susan Swindells
- Infectious Diseases, Internal Medicine, University of Nebraska Medical Center, Omaha
| | - Richard E Chaisson
- Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Noluthando Mwelase
- Helen Joseph Hospital, University of Witwatersrand University, Johannesburg, South Africa
| | - Khuanchai Supparatpinyo
- Department of Medicine, Research Institute for Health Sciences and Faculty of Medicine, Chiang Mai University, Thailand
| | - Lerato Mohapi
- Perinatal HIV Research Unit, University of the Witwatersrand and Chris Hani Baragwanath Hospital, Soweto, South Africa
| | - Amita Gupta
- Department of Medicine, Center for Clinical Global Health Education, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Constance A Benson
- Departments of Medicine and Global Public Health, Antiviral Research Center, University of California, San Diego
| | - Paxton Baker
- Vanderbilt Technologies for Advanced Genomics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Courtney V Fletcher
- Department of Pharmacy Practice and Science, Antiviral Pharmacology Laboratory, UNMC Center for Drug Discovery, University of Nebraska Medical Center, Omaha; for the AIDS Clinical Trials Group A5279 Study Team
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Jacobs TG, Svensson EM, Musiime V, Rojo P, Dooley KE, McIlleron H, Aarnoutse RE, Burger DM, Turkova A, Colbers A. Pharmacokinetics of antiretroviral and tuberculosis drugs in children with HIV/TB co-infection: a systematic review. J Antimicrob Chemother 2020; 75:3433-3457. [PMID: 32785712 PMCID: PMC7662174 DOI: 10.1093/jac/dkaa328] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 06/29/2020] [Indexed: 12/18/2022] Open
Abstract
INTRODUCTION Management of concomitant use of ART and TB drugs is difficult because of the many drug-drug interactions (DDIs) between the medications. This systematic review provides an overview of the current state of knowledge about the pharmacokinetics (PK) of ART and TB treatment in children with HIV/TB co-infection, and identifies knowledge gaps. METHODS We searched Embase and PubMed, and systematically searched abstract books of relevant conferences, following PRISMA guidelines. Studies not reporting PK parameters, investigating medicines that are not available any longer or not including children with HIV/TB co-infection were excluded. All studies were assessed for quality. RESULTS In total, 47 studies met the inclusion criteria. No dose adjustments are necessary for efavirenz during concomitant first-line TB treatment use, but intersubject PK variability was high, especially in children <3 years of age. Super-boosted lopinavir/ritonavir (ratio 1:1) resulted in adequate lopinavir trough concentrations during rifampicin co-administration. Double-dosed raltegravir can be given with rifampicin in children >4 weeks old as well as twice-daily dolutegravir (instead of once daily) in children older than 6 years. Exposure to some TB drugs (ethambutol and rifampicin) was reduced in the setting of HIV infection, regardless of ART use. Only limited PK data of second-line TB drugs with ART in children who are HIV infected have been published. CONCLUSIONS Whereas integrase inhibitors seem favourable in older children, there are limited options for ART in young children (<3 years) receiving rifampicin-based TB therapy. The PK of TB drugs in HIV-infected children warrants further research.
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Affiliation(s)
- Tom G Jacobs
- Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Pharmacy, Nijmegen, The Netherlands
| | - Elin M Svensson
- Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Pharmacy, Nijmegen, The Netherlands
- Department of Pharmaceutical Biosciences, Uppsala University, Uppsala, Sweden
| | - Victor Musiime
- Research Department, Joint Clinical Research Centre, Kampala, Uganda
- Department of Paediatrics and Child Health, School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Pablo Rojo
- Pediatric Infectious Diseases Unit. Hospital 12 de Octubre, Facultad de Medicina, Universidad Complutense, Madrid, Spain
| | - Kelly E Dooley
- Divisions of Clinical Pharmacology and Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Helen McIlleron
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Rob E Aarnoutse
- Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Pharmacy, Nijmegen, The Netherlands
| | - David M Burger
- Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Pharmacy, Nijmegen, The Netherlands
| | - Anna Turkova
- MRC Clinical Trials Unit at UCL, Institute of Clinical Trials & Methodology, University College London, London, UK
| | - Angela Colbers
- Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Pharmacy, Nijmegen, The Netherlands
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Zar HJ, Moore DP, Andronikou S, Argent AC, Avenant T, Cohen C, Green RJ, Itzikowitz G, Jeena P, Masekela R, Nicol MP, Pillay A, Reubenson G, Madhi SA. Diagnosis and management of community-acquired pneumonia in children: South African Thoracic Society guidelines. Afr J Thorac Crit Care Med 2020; 26:10.7196/AJTCCM.2020.v26i3.104. [PMID: 34471872 PMCID: PMC7433705 DOI: 10.7196/ajtccm.2020.v26i3.104] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Pneumonia remains a major cause of morbidity and mortality amongst South African children. More comprehensive immunisation regimens, strengthening of HIV programmes, improvement in socioeconomic conditions and new preventive strategies have impacted on the epidemiology of pneumonia. Furthermore, sensitive diagnostic tests and better sampling methods in young children improve aetiological diagnosis. OBJECTIVES To produce revised guidelines for pneumonia in South African children under 5 years of age. METHODS The Paediatric Assembly of the South African Thoracic Society and the National Institute for Communicable Diseases established seven expert subgroups to revise existing South African guidelines focusing on: (i) epidemiology; (ii) aetiology; (iii) diagnosis; (iv) antibiotic management and supportive therapy; (v) management in intensive care; (vi) prevention; and (vii) considerations in HIV-infected or HIVexposed, uninfected (HEU) children. Each subgroup reviewed the published evidence in their area; in the absence of evidence, expert opinion was accepted. Evidence was graded using the British Thoracic Society (BTS) grading system. Sections were synthesized into an overall guideline which underwent peer review and revision. RECOMMENDATIONS Recommendations include a diagnostic approach, investigations, management and preventive strategies. Specific recommendations for HIV infected and HEU children are provided. VALIDATION The guideline is based on available published evidence supplemented by the consensus opinion of SA paediatric experts. Recommendations are consistent with those in published international guidelines.
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Affiliation(s)
- H J Zar
- Department of Paediatrics and Child Health, Red Cross War Memorial Children’s Hospital and Faculty of Health Sciences, University of Cape Town, South Africa
- South African Medical Research Council Unit on Child and Adolescent Health, University of Cape Town, South Africa
| | - D P Moore
- Department of Paediatrics and Child Health, Chris Hani Baragwanath Academic Hospital, and Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - S Andronikou
- Department of Paediatrics and Child Health, Red Cross War Memorial Children’s Hospital and Faculty of Health Sciences, University of Cape Town, South Africa
- Department of Pediatric Radiology, Perelman School of Medicine, University of Philadephia, USA
| | - A C Argent
- Department of Paediatrics and Child Health, Red Cross War Memorial Children’s Hospital and Faculty of Health Sciences, University of Cape Town, South Africa
| | - T Avenant
- Department of Paediatrics and Child Health, Faculty of Health Sciences, University of Pretoria, South Africa
| | - C Cohen
- Centre for Respiratory Diseases and Meningitis, National Institute for Communicable Diseases, Johannesburg, South Africa
| | - R J Green
- Department of Paediatrics and Child Health, Faculty of Health Sciences, University of Pretoria, South Africa
| | - G Itzikowitz
- Department of Paediatrics and Child Health, Red Cross War Memorial Children’s Hospital and Faculty of Health Sciences, University of Cape Town, South Africa
| | - P Jeena
- Department of Paediatrics and Child Health, Nelson R Mandela School of Medicine, School of Clinical Medicine, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - R Masekela
- Department of Paediatrics and Child Health, Nelson R Mandela School of Medicine, School of Clinical Medicine, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - M P Nicol
- Division of Medical Microbiology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, South Africa; and Division of Infection and Immunity, School of Biomedical Sciences, University of Western Australia, Perth, Australia
| | - A Pillay
- Department of Paediatrics and Child Health, Nelson R Mandela School of Medicine, School of Clinical Medicine, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - G Reubenson
- Department of Paediatrics and Child Health, Rahima Moosa Mother and Child Hospital, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - S A Madhi
- South African Medical Research Council Vaccine and Infectious Diseases Analytics Unit, University of the Witwatersrand, Johannesburg, South Africa
- Department of Science and Technology/National Research Foundation: South African Research Chair in Vaccine Preventable Diseases, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Salazar-Austin N, Hoffmann J, Cohn S, Mashabela F, Waja Z, Lala S, Hoffmann C, Dooley KE, Chaisson RE, Martinson N. Poor Obstetric and Infant Outcomes in Human Immunodeficiency Virus-Infected Pregnant Women With Tuberculosis in South Africa: The Tshepiso Study. Clin Infect Dis 2019; 66:921-929. [PMID: 29028970 DOI: 10.1093/cid/cix851] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Accepted: 09/21/2017] [Indexed: 11/13/2022] Open
Abstract
Background Before the wide availability of antiretroviral therapy (ART), tuberculosis and human immunodeficiency virus (HIV) disease among pregnant women resulted in poor maternal and neonatal outcomes, including high rates of mother-to-child transmission of both HIV and tuberculosis. We aimed to describe the impact of tuberculosis among HIV-infected mothers on obstetric and infant outcomes in a population with access to ART. Methods In this prospective cohort study, we followed up HIV-infected pregnant women with or without tuberculosis disease from January 2011 through January 2014 in Soweto, South Africa. Two controls were enrolled for each case patient, matched by enrollment time, maternal age, gestational age, and planned delivery clinic and followed up for 12 months after delivery. Results We recruited 80 case patients and 155 controls, resulting in 224 live-born infants. Infants of mothers with HIV infection and tuberculosis disease had a higher risk of low birth weight (20.8% vs 10.7%; P = .04), prolonged hospitalization at birth (51% vs 16%; P < .001), infant death (68 vs 7 deaths per 1000 births; P < .001), and tuberculosis disease (12% vs 0%; P < .001) despite appropriate maternal therapy and infant tuberculosis preventive therapy. HIV transmission was higher among these infants (4.1% vs 1.3%; P = .20), though this difference was not statistically significant. Obstetric outcomes in coinfected women were also poorer with higher risks of maternal hospitalization (25% vs 11%; P = .005) and preeclampsia (5.5% vs 0.7%; P = .03). Conclusions Tuberculosis in HIV coinfected pregnant women remains a significant threat to the health of both mothers and infants. Improving tuberculosis prevention and early diagnosis among pregnant women is critical.
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Affiliation(s)
- Nicole Salazar-Austin
- Center for Tuberculosis Research and Departments of Medicine and Pediatrics, Baltimore, Maryland.,Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Jennifer Hoffmann
- Center for Tuberculosis Research and Departments of Medicine and Pediatrics, Baltimore, Maryland
| | - Silvia Cohn
- Center for Tuberculosis Research and Departments of Medicine and Pediatrics, Baltimore, Maryland
| | - Fildah Mashabela
- Perinatal HIV Research Unit (PHRU), MRC Soweto Matlosana Collaborating Centre for HIV/AIDS and TB, NRF/DST Centre of Excellence in Biomedical TB Research, South Africa
| | - Ziyaad Waja
- Perinatal HIV Research Unit (PHRU), MRC Soweto Matlosana Collaborating Centre for HIV/AIDS and TB, NRF/DST Centre of Excellence in Biomedical TB Research, South Africa
| | - Sanjay Lala
- Department of Pediatrics and Child Health, Chris Hani Baragwanath Hospital and University of the Witwatersrand, Soweto, South Africa
| | - Christopher Hoffmann
- Center for Tuberculosis Research and Departments of Medicine and Pediatrics, Baltimore, Maryland.,Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Kelly E Dooley
- Center for Tuberculosis Research and Departments of Medicine and Pediatrics, Baltimore, Maryland.,Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Richard E Chaisson
- Center for Tuberculosis Research and Departments of Medicine and Pediatrics, Baltimore, Maryland
| | - Neil Martinson
- Center for Tuberculosis Research and Departments of Medicine and Pediatrics, Baltimore, Maryland.,Perinatal HIV Research Unit (PHRU), MRC Soweto Matlosana Collaborating Centre for HIV/AIDS and TB, NRF/DST Centre of Excellence in Biomedical TB Research, South Africa
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Staudinger JL. Clinical applications of small molecule inhibitors of Pregnane X receptor. Mol Cell Endocrinol 2019; 485:61-71. [PMID: 30726709 DOI: 10.1016/j.mce.2019.02.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 01/29/2019] [Accepted: 02/02/2019] [Indexed: 01/19/2023]
Abstract
The canonical effect of Pregnane X Receptor (PXR, NR1I2) agonism includes enhanced hepatic uptake and a concomitant increase in the first-pass metabolism and efflux of drugs in mammalian liver and intestine. In patients undergoing combination therapy, PXR-mediated gene regulation represents the molecular basis of numerous food-drug, herb-drug, and drug-drug interactions. Moreover, PXR activation promotes chemotherapeutic resistance in certain malignancies. Additional research efforts suggest that sustained PXR activation exacerbates the development of fatty liver disease. Additional metabolic effects of PXR activation in liver are the inhibition of fatty acid oxidation and gluconeogenesis. The identification of non-toxic and selective PXR antagonists is therefore of current research interest. Inhibition of PXR should decrease adverse effects, improve therapeutic effectiveness, and advance clinical outcomes in patients with cancer, fatty liver, and diabetes. This review identifies small molecule PXR antagonists described to date, discusses possible molecular mechanisms of inhibition, and seeks to describe the likely biomedical consequences of the inhibition of this nuclear receptor superfamily member.
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Affiliation(s)
- Jeff L Staudinger
- Basic Sciences, Kansas City University of Medicine and Biosciences, Joplin, MO, USA.
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