title: [Type of isoniazid (INH) acetylation determined in tuberculosis patients treated at the Institute of Tuberculosis and Lung Diseases in Warsaw during the years 1990-1997].
abstract: The researched has dealt with the type of acetylation in 237 TB patients treated with standard course of chemotherapy with a dose of 300 mg of INH in period 1990-1997 in National Research Institute of Tuberculosis and Lung Disease in Warsaw Blood samples were taken before (time 0) and 1, 3, 6 and 24 h after drug administration. Plasma concentrations of isoniazid were determined with biological methods. Two indies of acetylation rate--I3 and C6 have been used to determine an acetylation type. Majority of the treated patients (68.8%) have shown fast type of INH acetylation. After similar dose of isoniazid different profile of absorption and excretion of the drug and significant differences (p < 0.01) in INH concentrations, acetylation rate and bioavailability between 163 fast and 74 slow acetylators have been observed. In plasma of 38.6% fast acetylators drug concentration 3 h after ingestion of a dose did not achieve the concentration of 1 mcg/ml. In plasma of 29.7% slow acetylators, concentrations of INH 6 h after ingestion were higher than 2 mcg/ml.
authors.affiliation: Zakładu Mikrobiologii IGiChP w Warszawie.
authors.forename: Ewa
authors.initials: E
authors.lastname: Augustynowicz-Kopeć
authors.forename: Zofia
authors.initials: Z
authors.lastname: Zwolska
mesh_terms: D000107:Acetylation; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000995:Antitubercular Agents / Q000097:blood / Q000378:metabolism* / Q000493:pharmacokinetics / Q000627:therapeutic use*; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D007538:Isoniazid / Q000097:blood / Q000378:metabolism* / Q000493:pharmacokinetics / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D010641:Phenotype; D011044:Poland; D012189:Retrospective Studies; D013997:Time Factors; D014397:Tuberculosis, Pulmonary / Q000188:drug therapy* / Q000378:metabolism*
chemical_list: D000995:Antitubercular Agents; D007538:Isoniazid