Research Topics
| M BoffitoSummaryAffiliation: Chelsea and Westminster Hospital Country: UK Publications
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Detail Information
Publications
Host determinants of antiretroviral drug activityMarta Boffito
St Stephen s Centre Chelsea and Westminster Hospital, 369 Fulham Road, London SW10 9NH, UK
Curr Opin Infect Dis 18:543-9. 2005..The potential role of pharmacogenetics in the management of HIV-1 infected individuals and drug discovery will be discussed...
Pharmacokinetics of once-daily darunavir-ritonavir and atazanavir-ritonavir over 72 hours following drug cessationMarta Boffito
St Stephen s Centre, Chelsea and Westminster Hospital, 369 Fulham Road, London SW10 9NH, United Kingdom
Antimicrob Agents Chemother 55:4218-23. 2011....
Pharmacokinetics of once-daily saquinavir/ritonavir in HIV-infected subjects: comparison with the standard twice-daily regimenMarta Boffito
Chelsea and Westminster Hospital, London, UK
Antivir Ther 9:423-9. 2004..To evaluate the steady-state pharmacokinetics and safety of two once-daily saquinavir/ritonavir (SQV/RTV) regimens, 1600/100 and 2000/100 mg, in HIV-positive patients...
A review of the clinical pharmacology of maraviroc. IntroductionMarta Boffito
St Stephens AIDS Trust, Crusaid Research Institute, St Stephen's Centre, London, UK
Br J Clin Pharmacol 65:1-4. 2008
Atazanavir enhances saquinavir hard-gel concentrations in a ritonavir-boosted once-daily regimenMarta Boffito
Chelsea and Westminster Hospital, London, UK
AIDS 18:1291-7. 2004..To determine the pharmacokinetics of saquinavir hard-gel capsules/ritonavir/atazanavir co-administered once daily at 1600/100/300 mg in HIV-infected individuals...
Steady-State pharmacokinetics of saquinavir hard-gel/ritonavir/fosamprenavir in HIV-1-infected patientsMarta Boffito
PK Research Ltd, St Stephen s Centre, Chelsea and Westminster Hospital, London, UK
J Acquir Immune Defic Syndr 37:1376-84. 2004..This study evaluated the steady-state pharmacokinetics of saquinavir 1000 mg twice daily (bid) and fosamprenavir 700 mg bid administered with 2 different doses of ritonavir (100 and 200 mg bid) in HIV-1-infected subjects...
Pharmacokinetics of saquinavir hard gel/ritonavir (1000/100 mg twice daily) when administered with tenofovir diproxil fumarate in HIV-1-infected subjectsMarta Boffito
PK Research Ltd, St Stephen s Centre, Chelsea and Westminster Hospital, 369 Fulham Road, London SW10 9NH, UK
Br J Clin Pharmacol 59:38-42. 2005..To investigate whether the administration of tenofovir diproxil fumarate 300 mg once daily alters the plasma pharmacokinetics of the saquinavir hard gel/ritonavir combination in HIV-1 infected individuals...
The pharmacokinetics of HIV protease inhibitor combinationsMarta Boffito
PK Research, Chelsea and Westminster Hospital, London, UK
Curr Opin Infect Dis 18:1-7. 2005..We review the pharmacologic rationale for the double-boosted protease inhibitor combinations and the complex drug-drug interactions that occur among different protease inhibitors when co-administered...
Management of advanced HIV disease: resistance, antiretroviral brain penetration and malignanciesM Boffito
Pharmacokinetic Research Unit, Chelsea and Westminster Hospital, London, UK
Int J Clin Pract 60:1098-106. 2006....
Boosted saquinavir hard gel formulation exposure in HIV-infected subjects: ritonavir 100 mg once daily versus twice dailyMarta Boffito
PK Research Ltd, St Stephen s Centre, Chelsea and Westminster Hospital, 369 Fulham Road, London SW10 9NH, UK
J Antimicrob Chemother 55:542-5. 2005..This study examined the pharmacokinetics of twice-daily saquinavir-hg (1000 mg) in the presence of ritonavir 100 mg, dosed twice-daily and once-daily on one single occasion...
Current status and future prospects of therapeutic drug monitoring and applied clinical pharmacology in antiretroviral therapyMarta Boffito
Chelsea and Westminster Hospital, London, UK
Antivir Ther 10:375-92. 2005..In addition, the panel formulated a series of position statements that are relevant to the interpretation of current data and can aid the design of future clinical trials...
Pharmacokinetics and pharmacodynamics in HAART and antibiotic therapyMarta Boffito
Pharmacokinetic Research Unit, St Stephen s Centre, Chelsea and Westminster Hospital, London, UK
New Microbiol 30:346-9. 2007....
Therapeutic drug monitoring and drug-drug interactions involving antiretroviral drugsMarta Boffito
Chelsea and Westminster Hospital, London, UK
Antivir Ther 10:469-77. 2005....
Lack of pharmacokinetic drug interaction between tenofovir disoproxil fumarate and nelfinavir mesylateMarta Boffito
PK Research, St Stephen s Centre, Chelsea and Westminster Hospital, London, UK
Antimicrob Agents Chemother 49:4386-9. 2005..No interaction between tenofovir and nelfinavir was observed...
Lopinavir protein binding in vivo through the 12-hour dosing intervalMarta Boffito
Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK
Ther Drug Monit 26:35-9. 2004..05 with both methods), suggesting a concentration-dependent binding of LPV that has not been observed in vitro. However, the clinical significance of such phenomena is still unclear...
Pharmacokinetics of atazanavir/ritonavir once daily and lopinavir/ritonavir twice and once daily over 72 h following drug cessationMarta Boffito
St Stephen s Centre, Chelsea and Westminster Hospital, London, UK
Antivir Ther 13:901-7. 2008..We investigated the pharmacokinetics of atazanavir/ritonavir once daily and lopinavir/ritonavir twice and once daily over 72 h following drug intake cessation...
Pharmacokinetics, efficacy, and safety of darunavir/ritonavir 800/100 mg once-daily in treatment-naïve and -experienced patientsMarta Boffito
Chelsea and Westminster Hospital, London, United Kingdom
HIV Clin Trials 9:418-27. 2008....
Pharmacokinetics and antiretroviral response to darunavir/ritonavir and etravirine combination in patients with high-level viral resistanceMarta Boffito
St Stephen s Centre, Chelsea and Westminster Hospital, London, UK
AIDS 21:1449-55. 2007..Cumulative antiretroviral exposure can result in multiclass HIV drug resistance. Experimental antiretroviral agents offer limited therapeutic benefit as resistance quickly develops after their introduction as a sole new agent...
Pharmacokinetics and safety of etravirine administered once or twice daily after 2 weeks treatment with efavirenz in healthy volunteersMarta Boffito
Department of HIV GUM Medicine, St Stephen s Centre, Chelsea and Westminster Hospital, London, United Kingdom
J Acquir Immune Defic Syndr 52:222-7. 2009..To assess the pharmacokinetics of etravirine once and twice daily without and with a preceding efavirenz intake period in healthy volunteers...
Abacavir plasma pharmacokinetics in the absence and presence of atazanavir/ritonavir or lopinavir/ritonavir and vice versa in HIV-infected patientsLauro J Waters
St Stephen s Centre, Chelsea and Westminster Hospital, London, UK
Antivir Ther 12:825-30. 2007..This study investigated the steady-state plasma pharmacokinetics of abacavir when co-administered with atazanavir/ritonavir or lopinavir/ritonavir in HIV-infected individuals...
British HIV Association (BHIVA) guidelines for the treatment of HIV-infected adults with antiretroviral therapy (2006)B Gazzard
Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, UK
HIV Med 7:487-503. 2006
Pharmacokinetics and safety of saquinavir/ritonavir and omeprazole in HIV-infected subjectsK Singh
St Stephen s Centre, Chelsea and Westminster NHS Foundation Trust, London, UK
Clin Pharmacol Ther 83:867-72. 2008..No grade 3/4 toxicity or lab abnormalities were observed. In the presence of omeprazole, saquinavir plasma exposure is significantly increased in HIV-infected subjects whether administered simultaneously or 2 h apart...
A novel probe drug interaction study to investigate the effect of selected antiretroviral combinations on the pharmacokinetics of a single oral dose of maraviroc in HIV-positive subjectsAnton L Pozniak
St Stephens AIDS Trust, Chelsea and Westminster Hospital, London, UK
Br J Clin Pharmacol 65:54-9. 2008....
Population pharmacokinetics of ritonavir-boosted saquinavir regimens in HIV-infected individualsLaura Dickinson
NIHR National Biomedical Research Centre, Royal Liverpool and Broadgreen University Hospital Trust, Liverpool, UK
J Antimicrob Chemother 62:1344-55. 2008....
Limited-sampling strategy for the prediction of boosted hard-gel saquinavir exposure at a dosage of 1000/100 mg twice daily in human immunodeficiency virus-infected individualsLaura Dickinson
Department of Pharmacology, University of Liverpool, Liverpool, UK
Ther Drug Monit 29:361-7. 2007..It may also aid the choice of sampling times for population analysis...
Early virologic failure in HIV-1 infected subjects on didanosine/tenofovir/efavirenz: 12-week results from a randomized trialDesmond Maitland
Chelsea and Westminster Hospital, London, UK
AIDS 19:1183-8. 2005....
Influence of atazanavir 200 mg on the intracellular and plasma pharmacokinetics of saquinavir and ritonavir 1600/100 mg administered once daily in HIV-infected patientsJennifer Ford
Department of Pharmacology and Therapeutics, University of Liverpool, 70 Pembroke Place, Liverpool L69 3GF, and PK Research Ltd, St Stephen's Centre, Chelsea and Westminster Hospital, London, UK
J Antimicrob Chemother 58:1009-16. 2006..Co-administration of atazanavir caused an increase in both the plasma and cellular exposure (AUC0-24) and C24 of saquinavir but not ritonavir...
Intracellular and plasma pharmacokinetics of saquinavir-ritonavir, administered at 1,600/100 milligrams once daily in human immunodeficiency virus-infected patientsJennifer Ford
Department of Pharmacology and Therapeutics, University of Liverpool, 70 Pembroke Pl, Block H, First Floor, Liverpool L69 3GF, United Kingdom
Antimicrob Agents Chemother 48:2388-93. 2004..The intracellular t(1/2)s of saquinavir and ritonavir were longer than the plasma t(1/2)s, indicating that intracellular drug may be available at a time when concentrations in plasma are below the minimum effective concentration...
Impact of different low-dose ritonavir regimens on lipids, CD36, and adipophilin expressionS Collot-Teixeira
1Cardiovascular Division, King s College London, London, UK
Clin Pharmacol Ther 85:375-8. 2009..The ritonavir concentration in the plasma correlated with changes in triglycerides, HDL, and adipophilin (r = 0.34, P = 0.030; r = 0.33, P = 0.040; and r = 0.4, P = 0.01, respectively)...
Metabolic-inflammatory changes, and accelerated atherosclerosis in HIV patients: rationale for preventative measuresF De Lorenzo
Beta Cell Diabetes Centre, Chelsea and Westminster Hospital NHS Foundation Trust, 369 Fulham Road, London, SW10 9NH, UK
Curr Med Chem 15:2991-9. 2008....
Unexpected drug interactions and adverse events with antiretroviral drugsGraeme Moyle
Chelsea and Westminster Hospital, London SW10 9NH, UK
Lancet 364:8-10. 2004
Phase 2a randomized controlled trial of short-term activity, safety, and pharmacokinetics of a novel nonnucleoside reverse transcriptase inhibitor, RDEA806, in HIV-1-positive, antiretroviral-naive subjectsGraeme Moyle
Department of HIV and Genitourinary Medicine, Chelsea and Westminster Hospital, 369 Fulham Road, London SW10 9NH, United Kingdom
Antimicrob Agents Chemother 54:3170-8. 2010..RDEA806 is a potent and promising novel NNRTI...
Proof of activity with AMD11070, an orally bioavailable inhibitor of CXCR4-tropic HIV type 1Graeme Moyle
Chelsea Westminster Hospital, London, United Kingdom
Clin Infect Dis 48:798-805. 2009..The X4 Antagonist Concept Trial investigates the safety and antiviral activity of AMD11070, a potent inhibitor of X4-tropic human immunodeficiency virus (HIV) in vitro in HIV-infected patients harboring X4-tropic virus...
Practical perspectives on the use of tipranavir in combination with other medications: lessons learned from pharmacokinetic studiesMarta Boffito
PK Research, St. Stephen's Centre-Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, United Kingdom
J Clin Pharmacol 46:130-9. 2006....
Pharmacokinetics of saquinavir hard-gel/ritonavir and atazanavir when combined once daily in HIV Type 1-infected individuals administered different atazanavir dosesMarta Boffito
Chelsea and Westminster Hospital, London, United Kingdom
AIDS Res Hum Retroviruses 22:749-56. 2006..Atazanavir-related hyperbilirubinemia was dose dependent. However, higher saquinavir and atazanavir exposure may be required to suppress HIV-resistant strain replication...
Pharmacokinetic analysis to assess forgiveness of boosted saquinavir regimens for missed or late dosingLaura Dickinson
Department of Pharmacology, University of Liverpool, Liverpool, UK
J Antimicrob Chemother 62:161-7. 2008..To give an estimation of 'forgiveness', we determined the length of time plasma drug concentrations were below target in HIV-infected patients receiving saquinavir/ritonavir regimens...
Effect of omeprazole on the pharmacokinetics of saquinavir-500 mg formulation with ritonavir in healthy male and female volunteersAlan Winston
Chelsea and Westminster Hospital, London, UK
AIDS 20:1401-6. 2006..We evaluated the effect of omeprazole, a proton-pump-inhibitor, on the pharmacokinetics of the recently developed saquinavir-500 mg formulation co-administered with ritonavir...
Steady-state pharmacokinetics of abacavir in plasma and intracellular carbovir triphosphate following administration of abacavir at 600 milligrams once daily and 300 milligrams twice daily in human immunodeficiency virus-infected subjectsGraeme Moyle
St Stephen s Centre, Chelsea and Westminster Hospital, London, United Kingdom
Antimicrob Agents Chemother 53:1532-8. 2009..Women had higher intracellular CBV-TP exposure than did men...
Protein binding in antiretroviral therapiesMarta Boffito
St. Stephens Centre, Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom
AIDS Res Hum Retroviruses 19:825-35. 2003....
Can we boost enough without ritonavir?Marta Boffito
Chelsea and Westminster Hospital, London, UK
AIDS Read 14:229-30, 233-5. 2004
Undefined duration of opiate withdrawal induced by efavirenz in drug users with HIV infection and undergoing chronic methadone treatmentMarta Boffito
Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK
AIDS Res Hum Retroviruses 18:341-2. 2002
Prevention of atherosclerosis in patients living with HIVFerruccio De Lorenzo
General Medicine and Prevention of Vascular Disorders, Beta Cell Diabetes Centre and St Stephen s AIDS Trust, Chelsea and Westminster Hospital NHS Foundation Trust, London, UK
Vasc Health Risk Manag 5:287-300. 2009..For the first time, this study will investigate anti-inflammatory and anti-atherogenic effects of a pharmacological lipid-lowering agent in HIV-IP that may lead to the reduction of CVD...
The effect of HAART in 254 consecutive patients with AIDS-related Kaposi's sarcomaMark Bower
Department of Oncology, Chelsea and Westminster Hospital, London, UK
AIDS 23:1701-6. 2009..A prospective cohort study was performed to evaluate the clinical outcomes of patients with histologically confirmed AIDS-related Kaposi's sarcoma diagnosed since the introduction of HAART...
Drug-drug interactions involving new antiretroviral drugs and drug classesJesse Soodalter
St Stephen s Centre, Chelsea and Westminster Hospital, London, UK
Curr Opin Infect Dis 22:18-27. 2009..The aim of this article is to review the available data on new antiretroviral agents and the drug-drug interactions studied so far...
Nucleoside/nucleotide reverse transcriptase inhibitor drug interactionsYohan P Samarasinghe
PK Research-St. Stephen's Centre, Chelsea and Westminster Hospital, 369 Fulham Road, London SW10 9NH, UK
J HIV Ther 9:79-86. 2004..This article aims to identify clinically relevant, beneficial and detrimental interactions of this class of antiretroviral agent...
The relationship between nevirapine plasma concentrations and abnormal liver function testsLisa M Almond
Department of Pharmacology and Therapeutics, University of Liverpool, Liverpool, UK
AIDS Res Hum Retroviruses 20:716-22. 2004..228; p = 0.04). Overall we found no strong association between NVP concentrations and hepatotoxicity. Although in this study NVP was well tolerated in HCV/HBV coinfected patients, higher plasma concentrations were observed...
The unbound percentage of saquinavir and indinavir remains constant throughout the dosing interval in HIV positive subjectsMarta Boffito
Department of Pharmacology and Therapeutics, University of Liverpool, UK
Br J Clin Pharmacol 54:262-8. 2002....
Simultaneous determination of rifampicin and efavirenz in plasmaMarta Boffito
Department of Pharmacology and Therapeutics, Univeristy of Liverpool, United Kingdom
Ther Drug Monit 24:670-4. 2002..This HPLC method is highly sensitive and precise, suitable for pharmacokinetic studies or routine clinical monitoring of rifampicin and efavirenz simultaneously in HIV patients with tuberculosis...
Pharmacokinetics and pharmacodynamics of drug interactions involving HIV-1 protease inhibitorsAkil Jackson
Chelsea and Westminster Hospital, London, United Kingdom
AIDS Rev 6:208-17. 2004....
The management of HIV-1 protease inhibitor pharmacokinetic interactionsAlan Winston
St Stephen's Centre, Chelsea and Westminster Hospital, London, UK
J Antimicrob Chemother 56:1-5. 2005..This review will focus on the current use of PIs, highlighting some important management issues encountered with common pharmacokinetic interactions seen in clinical practice...
Pharmacokinetic considerations for combining 2 protease inhibitorsMarta Boffito
Chelsea and Westminster Hospital, London, UK
AIDS Read 14:110-2, 115-6. 2004
Investigation of low-dose ritonavir on human peripheral blood mononuclear cells using gene expression whole genome microarraysSaliha Yilmaz
Cardiovascular Division, King s College London, 150 Stamford Street, London, UK
Genomics 96:57-65. 2010..Lower expression levels of these 4 candidate genes, known to play a critical role in inflammation, lipid metabolism and atherosclerosis, may explain ritonavir adverse effects in patients...
Pharmacokinetics and pharmacodynamics of drug interactions involving rifampicin, rifabutin and antimalarial drugsMarta Sousa
St Stephen s Centre, Chelsea and Westminster Hospital, 369 Fulham Road, London SW10 9NH, UK
J Antimicrob Chemother 62:872-8. 2008..e. quinine). The aim of this paper is to review known and potential drug-drug interactions between rifampicin, rifabutin and antimalarial drugs...
Pharmacokinetic evaluation of indinavir and indinavir/ritonavir-containing antiretroviral regimens in a clinical settingMarta Boffito
Ther Drug Monit 24:574-6. 2002
Clinical use of lopinavir/ritonavir in a salvage therapy setting: pharmacokinetics and pharmacodynamicsMarta Boffito
Department of Infectious Diseases, University of Torino, Turin, Italy
AIDS 16:2081-3. 2002..On multivariate analysis, a lopinavir concentration of 5.7 microg/ml or greater was an independent predictor of viral suppression over a 9-month follow-up period...
Lopinavir measurement in pleural effusion in a human immunodeficiency virus type 1-infected patient with kaposi's sarcomaMarta Boffito
Antimicrob Agents Chemother 46:3684-5. 2002
Pharmacokinetics of saquinavir co-administered with cimetidineMarta Boffito
Infectious Diseases Unit, University of Torino, Torino, Italy
J Antimicrob Chemother 50:1081-4. 2002..Further pharmacokinetic studies in HIV-infected subjects are warranted to confirm the boosting effect of cimetidine and to investigate any impact that the increase in saquinavir C(max) may have on intracellular accumulation of the drug...
Lopinavir/ritonavir absorption in a gastrectomized patientMarta Boffito
AIDS 17:136-7. 2003
Intra-individual variability in lopinavir plasma trough concentrations supports therapeutic drug monitoringMarta Boffito
AIDS 17:1107-8. 2003
Interindividual variability of once-daily ritonavir boosted saquinavir pharmacokinetics in Thai and UK patientsReshma Saskia Autar
The HIV Netherlands Australia Thailand Research Collaboration, Thai Red Cross AIDS Research Centre, Bangkok, 104 Rajdumri Road, 10330 Pathumwan, Bangkok, Thailand
J Antimicrob Chemother 56:908-13. 2005..Differential exposure to saquinavir/ritonavir may lead to therapy failure. The objective was to identify factors that influence variability of saquinavir/ritonavir plasma concentrations...
The clinical pharmacology of antiretrovirals in developmentAlan Winston
Imperial College, Clinical Trials Unit, Ground Flood, Winston Churchill Wing, St Mary s Hospital, Praed Street, London W2 1NY, UK
Expert Opin Drug Metab Toxicol 2:447-58. 2006..This review reports the known data on the pharmacokinetics of experimental antiretrovirals, and describe the main drug-drug interactions studied so far...
The clinical implications of antiretroviral pharmacogenomicsJulie Fox
St. Mary's Hospital, Clinical Trials Centre, Winston Churchill Wing, Division of Medicine, Imperial College London, Praed Street, London W2 1NY, UK
Pharmacogenomics 7:587-96. 2006..This review summarizes the key findings in the growing knowledge between human genetics and response to antiretroviral drugs and how these findings may be effectively applied in a clinical context...
Different methods to calculate the inhibitory quotient of boosted single protease inhibitors and their association with virological responseAlan Winston
J Acquir Immune Defic Syndr 41:675-6. 2006
Stopping antiretroviral therapyStephen Taylor
Directorate of Sexual Medicine and HIV, Birmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Bordesly Green East, Birmingham, UK
AIDS 21:1673-82. 2007
Detection of stavudine concentrations in plasma of HIV-infected patients taking zidovudineStefano Bonora
AIDS 18:577-8. 2004
Lactacidemia in asymptomatic HIV-infected subjects receiving nucleoside reverse-transcriptase inhibitorsMarta Boffito
Clin Infect Dis 34:558-9. 2002
Treating advanced HIV infectionMarta Boffito
J Acquir Immune Defic Syndr 34:344-5. 2003
Ketoconazole and lopinavir/ritonavir coadministration: boosting beyond boostingMarta Boffito
AIDS Res Hum Retroviruses 19:941-2. 2003
Simvastatin co-prescribed with protease inhibitors despite dangerous drug interactionsKatherine M Coyne
Sex Transm Infect 83:498. 2007
Alpha 1-acid glycoprotein levels in human immunodeficiency virus-infected subjects on antiretroviral regimensMarta Boffito
Drug Metab Dispos 30:859-60. 2002
Antiretroviral therapy to reduce the sexual transmission of HIVStephen Taylor
Department of Sexual Medicine, Brimingham Heartlands Hospital, Birmingham B9 5SS, UK
J HIV Ther 8:55-66. 2003..In the worst-case scenario, antiretroviral therapy may simply increase the transmission of drug-resistant virus...
