Diethylcarbamazine disposition in patients with onchocerciasis. 1981

G Edwards, and K Awadzi, and A M Breckenridge, and H M Gilles, and M L Orme, and S A Ward

Diethylcarbamazine (DEC), 0.5 mg/kg, was taken orally by six patients being treated for onchocerciasis. Blood samples were taken at timed intervals for 48 hr and urine and feces collected for 4 days. Plasma and urinary concentrations of DEC and DEC N-oxide were measured by gas-liquid chromatography. DEC appeared to be rapidly absorbed, with a peak plasma concentration of 150 to 250 ng/ml reached in 2 to 3 hr. There was a secondary rise in plasma DEC concentration at 5 to 6 hr in all patients. In contrast to the way the drug is eliminated in rats, in man it was by both renal and extrarenal routes, with small amounts (+/- 10%) being excreted as an N-oxide metabolite. DEC kinetics were also investigated in five normal subjects and the result were much the same. Clinical implications are discussed.

UI MeSH Term Description Entries
D007668 Kidney Body organ that filters blood for the secretion of URINE and that regulates ion concentrations. Kidneys
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009855 Onchocerciasis Infection with nematodes of the genus ONCHOCERCA. Characteristics include the presence of firm subcutaneous nodules filled with adult worms, PRURITUS, and ocular lesions. Onchocerciases
D004049 Diethylcarbamazine An anthelmintic used primarily as the citrate in the treatment of filariasis, particularly infestations with Wucheria bancrofti or Loa loa. Carbamazine,Diethylcarbamazine Citrate,Diethylcarbamazine Citrate (1:1),Diethylcarbamazine Citrate (1:2),Diethylcarbamazine L-Tartrate (1:1),Diethylcarbamazine Maleate,Diethylcarbamazine Monohydrochloride,Diethylcarbamazine Phosphate (1:1),Hetrazan,Loxuran,Notezine,Citrate, Diethylcarbamazine,Maleate, Diethylcarbamazine,Monohydrochloride, Diethylcarbamazine
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D001711 Biotransformation The chemical alteration of an exogenous substance by or in a biological system. The alteration may inactivate the compound or it may result in the production of an active metabolite of an inactive parent compound. The alterations may be divided into METABOLIC DETOXICATION, PHASE I and METABOLIC DETOXICATION, PHASE II.

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