title: Malabsorption of rifampin and isoniazid in HIV-infected patients with and without tuberculosis.
abstract: The absorption of rifampin, isoniazid, and D-xylose in patients with human immunodeficiency virus (HIV) infection and diarrhea, in patients with HIV infection and tuberculosis (TB), in patients with pulmonary TB alone, and in healthy subjects was studied. Percentage of dose of the drugs, their metabolites, and D-xylose excreted in urine were calculated. A significant reduction in the absorption of drugs and D-xylose in both the HIV infection/diarrhea and HIV infection/TB groups was observed (P<.05), and the correlation between them was significant. Our results indicate that patients with HIV infection and diarrhea and those with HIV infection and TB have malabsorption of rifampin and isoniazid.
authors.affiliation: Tuberculosis Research Centre (Indian Council of Medical Research), Chennai, India.
authors.forename: Prema
authors.initials: P
authors.lastname: Gurumurthy
authors.forename: Geetha
authors.initials: G
authors.lastname: Ramachandran
authors.forename: A K
authors.initials: AK
authors.lastname: Hemanth Kumar
authors.forename: S
authors.initials: S
authors.lastname: Rajasekaran
authors.forename: C
authors.initials: C
authors.lastname: Padmapriyadarsini
authors.forename: Soumya
authors.initials: S
authors.lastname: Swaminathan
authors.forename: P
authors.initials: P
authors.lastname: Venkatesan
authors.forename: L
authors.initials: L
authors.lastname: Sekar
authors.forename: S
authors.initials: S
authors.lastname: Kumar
authors.forename: O R
authors.initials: OR
authors.lastname: Krishnarajasekhar
authors.forename: P
authors.initials: P
authors.lastname: Paramesh
mesh_terms: D000293:Adolescent; D000328:Adult; D000904:Antibiotics, Antitubercular / Q000493:pharmacokinetics*; D015658:HIV Infections / Q000150:complications / Q000378:metabolism*; D006801:Humans; D007408:Intestinal Absorption; D007538:Isoniazid / Q000493:pharmacokinetics*; D008286:Malabsorption Syndromes; D008297:Male; D008875:Middle Aged; D012293:Rifampin / Q000493:pharmacokinetics*; D014376:Tuberculosis / Q000150:complications / Q000378:metabolism*; D014994:Xylose / Q000493:pharmacokinetics
chemical_list: D000904:Antibiotics, Antitubercular; D014994:Xylose; D007538:Isoniazid; D012293:Rifampin