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Cutaneous hypersensitivity reactions to thiacetazone, HIV infection and thiacetazone concentrations in plasma
Author(s) -
WATKINS W. M.,
MUNGAI M.,
MUHIA D. K.,
MBERU E. K.,
GATHUA S.,
WINSTANLEY P. A.,
GILKS's C. F.,
NUNN P.
Publication year - 1996
Publication title -
british journal of clinical pharmacology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.216
H-Index - 146
eISSN - 1365-2125
pISSN - 0306-5251
DOI - 10.1111/j.1365-2125.1996.tb00175.x
Subject(s) - medicine , pharmacokinetics , incidence (geometry) , tuberculosis , human immunodeficiency virus (hiv) , drug , gastroenterology , immunology , pharmacology , pathology , physics , optics
We have studied the relationship between the plasma concentration‐time profile of thiacetazone over the 24 h between doses [AUC(0,24h)] and the incidence of cutaneous reactions among HIV‐infected patients with tuberculosis in Kenya. Cutaneous reactions due to thiacetazone occurred in 4/14 [28.6%] HIV + ve patients compared with 3/47 [6.4%] HIV‐ve patients [RR = 4.48, 95% CI‐1.1 to 17.71, and all resolved on alternative therapy. Among the HIV + ve patients, those with cutaneous reactions had higher AUC(0,24h) values, although the difference was not significant. These results do not exclude pharmacokinetic change as being at least partly responsible for cutaneous reactions to TCZ in HIV + ve patients, and do not refute an immunological basis for the reaction. With regard to the operational use of TCZ in Africa, there is no indication that a modification of the dose will reduce the frequency of drug reactions.