Abstract:
BACKGROUND AND OBJECTIVE:To assess the influence of hepatitis C virus (HCV) co-infection and the extent of liver fibrosis on lopinavir/ritonavir pharmacokinetics in HIV-infected patients without liver function impairment. METHODS:Cross-sectional, comparative study enrolling HIV-infected adults receiving lopinavir/ritonavir (400 mg/100 mg twice daily). HIV/HCV co-infected patients were grouped as having advanced fibrosis (HCV+/FIB+, n=7) or not (HCV+/FIB-, n=8) based on the FIB-4 index. A full concentration-time profile was obtained for each patient, and blood samples were collected before (0), and 1, 2, 4, 6, 8, 10 and 12 hours after a lopinavir/ritonavir dose. Lopinavir and ritonavir concentrations in plasma were determined by high-performance liquid chromatography. Maximum and minimum plasma concentrations (Cmax and Cmin), area under the plasma concentration-time curve from 0 to 12 hours (AUC12), apparent oral clearance at steady state (CLss/F), and apparent volume of distribution after oral administration (Vd/F) were calculated for each individual using a non-compartmental approach. RESULTS:Twenty-six HCV- and 22 HCV+patients were enrolled. Lopinavir and ritonavir pharmacokinetics were comparable between HCV- and HCV+patients. However, the Vd/F of lopinavir was 125% higher in HCV+/FIB+patients than in HCV-patients (p=0.015) and 107% higher than in HCV+/FIB-(p=0.040) patients. The CLss/F of ritonavir was 40% lower in HCV+/FIB+patients than in HCV-patients (p=0.005) and 44% lower than in HCV+/FIB-patients (p=0.040). Thus, for ritonavir AUC12, Cmax and Cmin in HCV+/FIB+patients were 63%, 86% and 100% higher, respectively, when compared with those parameters in HCV-patients (p=0.005, p=0.012 and p=0.015, respectively), and 80%, 86% and 100% higher, respectively, when compared with levels in HCV+/FIB- patients (p=0.040, p=0.040 and p=0.029, respectively). CONCLUSION:Lopinavir exposure is similar in HIV-infected patients with or without HCV co-infection and without liver function impairment. However, ritonavir exposure may be higher in this setting, particularly in individuals with advanced liver fibrosis.
journal_name
Clin Pharmacokinetjournal_title
Clinical pharmacokineticsauthors
Moltó J,Valle M,Blanco A,Negredo E,DelaVarga M,Miranda C,Miranda J,Domingo P,Vilaró J,Tural C,Costa J,Barbanoj MJ,Clotet Bdoi
10.2165/00003088-200746010-00005subject
Has Abstractpub_date
2007-01-01 00:00:00pages
85-92issue
1eissn
0312-5963issn
1179-1926pii
4615journal_volume
46pub_type
杂志文章abstract:OBJECTIVE:The aim of this study was to characterize the relationship between morphine plasma concentration and repeated time to postoperative remedication events in children undergoing cardiac surgery. METHODS:Data from our previously published study of morphine pharmacokinetics were utilized in this pharmacodynamic s...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章
doi:10.1007/s40262-016-0398-z
更新日期:2016-10-01 00:00:00
abstract::Sevoflurane is a comparatively recent addition to the range of inhalational anaesthetics which has been recently released for clinical use. In comparison to older inhalational agents such as isoflurane or halothane, the most important property of sevoflurane is its low solubility in the blood. This results in a more r...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.2165/00003088-199936010-00002
更新日期:1999-01-01 00:00:00
abstract::Clinical pharmacokinetics emerged as a clinical discipline in the late 1960s and early 1970s. Clinical pharmacokinetic monitoring (CPM) helped many pharmacists to enter the clinical arena, but the focus was more on the pharmacists and tools. With the widespread acceptance of pharmaceutical care and patient-focused pha...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.2165/00003088-199834040-00001
更新日期:1998-04-01 00:00:00
abstract::Ketoprofen, a potent nonsteroidal anti-inflammatory drug (NSAID) of the 2-arylpropionic acid class, has been used clinically for over 15 years in Europe, and has recently been introduced in the United States. Although it possesses a chiral centre, with only the S-enantiomer possessing beneficial pharmacological activi...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.2165/00003088-199019030-00004
更新日期:1990-09-01 00:00:00
abstract::Mifepristone is a steroidal antiprogestin and antiglucocorticoid acting at the receptor level. The aromatic dimethylaminophenyl side chain in position 11 of the steroid structure is essential for the antagonistic properties of mifepristone. The pharmacokinetics of mifepristone are characterised by rapid absorption, a ...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章
doi:10.2165/00003088-199733010-00002
更新日期:1997-07-01 00:00:00
abstract:BACKGROUND:For imatinib, a relationship between systemic exposure and clinical outcome has been suggested. Importantly, imatinib concentrations are not stable and decrease over time, for which several mechanisms have been suggested. In this study, we investigated if a decrease in alpha-1 acid glycoprotein (AGP) is the ...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章
doi:10.1007/s40262-016-0441-0
更新日期:2017-03-01 00:00:00
abstract:OBJECTIVE:The aim of these studies was to determine the absolute bioavailability in healthy volunteers of inhaled fluticasone propionate (FP) administered as a single dose via the Diskhaler and Diskus powder devices, and the pharmacokinetics of inhaled FP after repeated administration via the Diskhaler device. METHODS...
journal_title:Clinical pharmacokinetics
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.2165/00003088-200039001-00004
更新日期:2000-01-01 00:00:00
abstract::The importance of in-depth knowledge about the pharmacokinetics of a drug is evident because pharmacokinetic behaviour may correlate with activity and toxicity. The most elaborate pharmacokinetic investigation is a so-called mass balance study employing a radioactive tracer. A mass balance study investigates the plasm...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.2165/00003088-200645010-00003
更新日期:2006-01-01 00:00:00
abstract::Nintedanib is an oral, small-molecule tyrosine kinase inhibitor approved for the treatment of idiopathic pulmonary fibrosis and patients with advanced non-small cell cancer of adenocarcinoma tumour histology. Nintedanib competitively binds to the kinase domains of vascular endothelial growth factor (VEGF), platelet-de...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.1007/s40262-019-00766-0
更新日期:2019-09-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Clearance is an important pharmacokinetic concept for scaling dosage, understanding the risks of drug-drug interactions and environmental risk assessment in children. Accurate clearance scaling to children requires prior knowledge of adult clearance mechanisms and the age-dependence of physiolo...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章
doi:10.2165/00003088-200645070-00004
更新日期:2006-01-01 00:00:00
abstract::Uncertainty exists as to the most suitable pharmacokinetic parameter sets for propofol target-controlled infusions (TCI). The pharmacokinetic parameter sets currently employed are clearly not universally applicable, particularly when patient attributes differ from those of the subjects who participated in the original...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章
doi:10.2165/11596980-000000000-00000
更新日期:2012-03-01 00:00:00
abstract:BACKGROUND:The imatinib trough plasma concentration (C(min)) correlates with clinical response in cancer patients. Therapeutic drug monitoring (TDM) of plasma C(min) is therefore suggested. In practice, however, blood sampling for TDM is often not performed at trough. The corresponding measurement is thus only remotely...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章
doi:10.2165/11596990-000000000-00000
更新日期:2012-03-01 00:00:00
abstract::For the past 300 years antimalarial dosage regimens have not been based on pharmacokinetic information. However, now that this information is available, it is appropriate to examine current recommendations for prophylaxis and treatment. In healthy subjects, the cinchona alkaloids (quinine and quinidine), primaquine an...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.2165/00003088-198510030-00001
更新日期:1985-05-01 00:00:00
abstract:OBJECTIVE:To assess any pharmacokinetic interactions between loperamide and saquinavir. DESIGN:Double-blind, double-dummy, randomised, placebo-controlled, three-way crossover trial. PARTICIPANTS:Twelve healthy male and female volunteers, aged 24-46 years. METHODS:Saquinavir and loperamide pharmacokinetics were deter...
journal_title:Clinical pharmacokinetics
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.2165/00003088-200443140-00004
更新日期:2004-01-01 00:00:00
abstract::The overall reporting rate of drug-drug interactions with fluvoxamine is very low: only 73 cases have been identified from an estimated exposure of over 8 million patients worldwide. The reporting rate is similar in men and women, and most events relate to the use of fluvoxamine in conjunction with psychotropic compou...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.2165/00003088-199500291-00006
更新日期:1995-01-01 00:00:00
abstract:BACKGROUND:Ovarian cancer is the leading cause of gynaecological cancer-related death in Western countries. Intraperitoneal (IP) peroperative chemotherapy is an interesting therapeutic option. However, very few data are available regarding pharmacokinetics and especially population pharmacokinetics. PATIENTS AND METHO...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章
doi:10.2165/00003088-200948030-00003
更新日期:2009-01-01 00:00:00
abstract::To investigate the influence of the presence of oedema on the pharmacokinetics and pharmacodynamics of furosemide (frusemide) we selected 9 hospitalised patients (mean age 70.3 years, range 59 to 84 years) with severe congestive heart failure (NYHA III to IV) and an assessed amount of peripheral oedema of at least 5 k...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章
doi:10.2165/00003088-199222040-00006
更新日期:1992-04-01 00:00:00
abstract::The pharmacokinetic effect of extracorporeal elimination can be evaluated from the extracorporeal elimination rate constant, from the amount of drug removed, and from extracorporeal clearance. To compare the validity of these approaches in clinical practice, the effect of multiple plasma exchanges on the steady-state ...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章
doi:10.2165/00003088-198510060-00004
更新日期:1985-11-01 00:00:00
abstract::Calcineurin inhibitors, the primary immunosuppressive therapy used to prevent alloreactivity of transplanted organs, have a narrow therapeutic index. Currently, treatment is individualized based on clinical assessment of the risk of rejection or toxicity guided by trough concentration monitoring. Advances in immune mo...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.1007/s40262-020-00923-w
更新日期:2020-11-01 00:00:00
abstract::Fluorouracil is used clinically against various solid tumours. Both fluorouracil toxicity and pharmacokinetics vary highly within and between individuals. The reasons why doses are not individualised routinely are difficulties in defining, predicting and achieving an optimal fluorouracil exposure or dose because of a ...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.2165/00003088-200645060-00002
更新日期:2006-01-01 00:00:00
abstract::The effects of diabetes mellitus on the pharmacokinetics and pharmacodynamics of drugs have been well described in experimental animal models; however, only minimal data exist for humans and the current knowledge regarding the effects of diabetes on these properties remains unclear. Nevertheless, it has been observed ...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.2165/11631900-000000000-00000
更新日期:2012-08-01 00:00:00
abstract::Fluvoxamine is a selective inhibitor of serotonin reuptake that is widely used in the management of depression. Following oral administration, the drug is absorbed efficiently from the gastrointestinal tract. Peak plasma concentrations are usually observed within 2 to 8 hours postdose for capsules and film-coated tabl...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.2165/00003088-199427030-00002
更新日期:1994-09-01 00:00:00
abstract::Dorzolamide is a carbonic anhydrase inhibitor for topical ophthalmic application. It is used in the treatment of glaucoma to lower the intraocular pressure. After absorption via the cornea and stroma, it inhibits carbonic anhydrase in the ciliary process, which leads to a reduction of aqueous humour production and the...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.2165/00003088-200241030-00004
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:The likelihood of detecting a therapeutic signal of an effective drug for schizophrenia is impeded by a high placebo effect and by high dropout of patients. Several unsuccessful trials of schizophrenia, at least partly due to highly variable placebo effects, have indicated the necessity for a ...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章
doi:10.2165/11598460-000000000-00000
更新日期:2012-04-01 00:00:00
abstract::The resurgence of the use of and interest in vancomycin, in conjunction with the high degree of interpatient variability in its pharmacokinetic profile, has prompted the development of many and varied dosing methods. Several dosing nomograms have been proposed and evaluated, methods which are useful for initial dosing...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.2165/00003088-199120060-00003
更新日期:1991-06-01 00:00:00
abstract::The results of research studies conducted to date in vitro and in healthy volunteers are practically all concordant in demonstrating the lack of any kind of interference between famotidine and microsomal oxidative metabolism. The pharmacokinetics (elimination half-life, area under the plasma concentration-time curve, ...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章
doi:10.2165/00003088-199324030-00006
更新日期:1993-03-01 00:00:00
abstract::It should be recognized that children are not small adults, hence dosing in children should not be a 'small adult dose'. A mean population dose in all age groups is just an average dose and not necessarily the best or the correct dose for a given patient. The dose of a drug varies from patient to patient and individua...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.1007/s40262-014-0134-5
更新日期:2014-04-01 00:00:00
abstract::Pharmacological treatment of patients with Alzheimer's disease is becoming more important, as evidenced by the number of drugs being developed in different countries. It has been shown in the majority of clinical trials that cholinesterase inhibitors, such as tacrine (tetrahydroaminoacridine), are able to induce benef...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.2165/00003088-199529020-00005
更新日期:1995-08-01 00:00:00
abstract::All of the commonly used anticonvulsants drugs, except possibly primidone, are cleared from the human body mainly by metabolism. The metabolites of phenytoin, phenobarbital and ethosuximide have so far not been shown to possess significant pharmacological activity. However, carbamazepine-10,11-epoxide, derived from ca...
journal_title:Clinical pharmacokinetics
pub_type: 杂志文章,评审
doi:10.2165/00003088-199121010-00003
更新日期:1991-07-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Dalcetrapib, a cholesteryl ester transfer protein (CETP) modulator, is a thioester pro-drug that is rapidly hydrolysed to generate a pharmacologically active thiol. The thiol covalently binds to plasma proteins as mixed disulfides, extensively distributes into plasma lipoprotein fractions, and ...
journal_title:Clinical pharmacokinetics
pub_type: 临床试验,杂志文章
doi:10.1007/s40262-013-0035-z
更新日期:2013-04-01 00:00:00