BACKGROUND Nevirapine-based antiretroviral therapy is widely used as a first-line treatment for HIV-infected patients in resource-limited settings. Nevirapine plasma concentration has been shown to be associated with virological response and treatment failure. Therefore, identifying sources of the variability of nevirapine pharmacokinetics is important for dose optimization. The purpose of the ...

Objective: To assess and compare the pharmacokinetics and bioavailability of methylergometrine (ME) in men and non-pregnant women. Design: A cross-over design was used for an oral dose of 0,125 mg and an intravenous dose of 0.200 mg of ME in 6 men and 6 non-pregnant women (parallel-design in gender). Results: After intravenous administration, the pharmacokinetic profile of ME was described with...

Eight subjects with chronic stable alcoholic cirrhosis and eight matched controls with normal liver function were given an initial 30-minute intravenous infusion of 1 g of meropenem; beginning 24 hours later, they received five additional 1-g doses at 6-hour intervals. No statistically significant differences were found between the first dose and steady state or between groups for any plasma ph...

The pharmacokinetics of oral dihydroartemisinin and mefloquine were investigated in 40 patients (aged 16-30 y, weighing 45-60 kg) with acute uncomplicated falciparum malaria following the four combination regimens of dihydroartemisinin/ mefloquine [regimen-I: 300 mg dihydroartemisinin (h-0) plus 750 mg mefloquine (h-0); regimen-II: 300 mg dihydroartemisinin (h-0) plus 750 mg mefloquine (h-24); ...

In 14 patients with acute myeloid leukemia (AML) the plasma concentration of cytosine arabinoside (Ara-C) was determined at the start of the first course of treatment at various intervals after a bolus injection. In 10 patients plasma concentration/time data were fitted to a biexponential equation and pharmacokinetic parameters were estimated from the coefficient and exponents of such equations...

The effect of kinnow juice on the pharmacokinetics of a single dose of sustained release theophylline was investigated in healthy male volunteers. In a two phased open cross-over randomized study, ten healthy male volunteers were given sustained release theophylline (300 mg) along with 300 ml of water or kinnow juice, a routinely used citrus juice in India. Blood samples were collected at diffe...

We have observed in clinical practice that Native Americans require lower dosages of tacrolimus to attain similar target blood trough levels compared to whites after renal transplant. Because there are no pharmacokinetic studies of tacrolimus in this ethnic group, we investigated whether this clinical observation could be corroborated by pharmacokinetic differences between Native Americans and ...

We used population analysis techniques to determine zidovudine (ZDV) pharmacokinetic parameters in 15 preterm neonates (mean gestational age, 29.4 weeks; mean birth weight, 1,230 g) at a mean age of 5.5 days. The values of the pharmacokinetic parameters were as follows: clearance, 2.53 +/- 0.44 ml/min/kg; volume of distribution, 1.59 +/- 0.51 liters/kg; and half-life, 7.2 +/- 1.5 h. For seven i...

AIMS The objective of this study was to compare the pharmacokinetics, safety and tolerability of the antiepileptic drug felbamate in young and elderly healthy vounteers. METHODS The single and multiple dose pharmacokinetics of felbamate were examined in an open-label two-dose level parallel group study in 24 elderly (66 to 78-year-old) and 11 young (18 to 45-year-old) healthy volunteer subjec...

In Iran intramuscular (IM) administration of antivenoms is used for the treatment of human scorpion envenoming of six medically dangerous scorpion species, including Odonthubuthus doriae (O. doriae). The purpose of the current study is to investigate the efficiency of the intramuscular route and the delay of injection on the neutralizing effect of the available polyvalent antivenom. We compared...