SwePub - search: WFRF:(Nguyen Ngoc)

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1.	Gordi, Toufigh, et al. (author) Artemisinin pharmacokinetics and efficacy in uncomplicated-malaria patients treated with two different dosage regimens. 2002 In: Antimicrobial agents and chemotherapy. - 0066-4804. ; 46:4, s. 1026-31 Journal article (peer-reviewed)abstract The immediate efficacies of two oral dosage regimens of artemisinin were investigated in 77 male and female adult Vietnamese falciparum malaria patients randomly assigned to treatment with either 500 mg of artemisinin daily for 5 days (group A; n = 40) or artemisinin at a dose of 100 mg per day for 2 days, with the dose increased to 250 mg per day for 2 consecutive days and with a final dose of 500 mg on the fifth day (group B; n = 37). Parasitemia was monitored every 4 h. The average parasite clearance time was longer in group B than in group A (means +/- standard deviations, 50 +/- 23 and 34 +/- 14 h, respectively; P < 0.01). Artemisinin concentrations in saliva samples obtained on days 1 and 5 were quantified by high-performance liquid chromatography. The average oral clearance, based on saliva drug concentrations in group B patients, was twofold higher than that in group A patients on day 1 (P < 0.01), with no differences in drug half-lives (P = 0.40), indicating a saturable first-pass metabolism. Female patients had higher oral clearance values on day 1. Artemisinin's pharmacokinetic parameters were similar on day 5 in both groups, although a significant increase in oral clearance from day 1 to day 5 was evident. Thus, artemisinin exhibited both dose- and time-dependent pharmacokinetics. The escalating dose studied did not result in higher artemisinin concentrations toward the end of the treatment period.
2.	Hjort af Ornäs, Anders, 1944-, et al. (author) Water supply & sanitation and health in the Red River basin - Working paper, English version. 2nd Red River Basin Sector Project TA 3892 - VIE, Part A : Water Resources Management, Phase 1 2003 Reports (other academic/artistic)abstract

Gordi, Toufigh, et al. (author)
Artemisinin pharmacokinetics and efficacy in uncomplicated-malaria patients treated with two different dosage regimens.
2002
In: Antimicrobial agents and chemotherapy. - 0066-4804. ; 46:4, s. 1026-31
Journal article (peer-reviewed)abstract
- The immediate efficacies of two oral dosage regimens of artemisinin were investigated in 77 male and female adult Vietnamese falciparum malaria patients randomly assigned to treatment with either 500 mg of artemisinin daily for 5 days (group A; n = 40) or artemisinin at a dose of 100 mg per day for 2 days, with the dose increased to 250 mg per day for 2 consecutive days and with a final dose of 500 mg on the fifth day (group B; n = 37). Parasitemia was monitored every 4 h. The average parasite clearance time was longer in group B than in group A (means +/- standard deviations, 50 +/- 23 and 34 +/- 14 h, respectively; P < 0.01). Artemisinin concentrations in saliva samples obtained on days 1 and 5 were quantified by high-performance liquid chromatography. The average oral clearance, based on saliva drug concentrations in group B patients, was twofold higher than that in group A patients on day 1 (P < 0.01), with no differences in drug half-lives (P = 0.40), indicating a saturable first-pass metabolism. Female patients had higher oral clearance values on day 1. Artemisinin's pharmacokinetic parameters were similar on day 5 in both groups, although a significant increase in oral clearance from day 1 to day 5 was evident. Thus, artemisinin exhibited both dose- and time-dependent pharmacokinetics. The escalating dose studied did not result in higher artemisinin concentrations toward the end of the treatment period.

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