home *** CD-ROM | disk | FTP | other *** search
- Document 0868
- DOCN M9480868
- TI Radiometric susceptibility testing of Mycobacterium tuberculosis against
- second-line drugs.
- DT 9410
- AU Salfinger M; Gross W; Kornblum J; Laszlo A; Pfyffer G; Roberts G;
- Siddiqi S; NY State Dept. of Health, Albany.
- SO Abstr Gen Meet Am Soc Microbiol. 1994;94:197 (abstract no. U-138).
- Unique Identifier : AIDSLINE ASM94/94313077
- AB AIDS epidemic, deterioration of the public health infrastructure and
- inadequate training of health care providers are some factors
- contributing to the increase of tuberculosis (TB), especially
- multidrug-resistant TB. In vitro drug susceptibility testing is now
- required for all TB patients. Since faster turnaround times in the TB
- laboratory are necessary, we compared the radiometric technique with the
- conventional Middlebrook 7H10 agar method for susceptibility to
- second-line drugs in a 3 phase study. In phase I, 10 susceptible M.
- tuberculosis strains were tested in the BACTEC system against the
- following drugs and concentration (mcg/ml): amakicin (AN, 1.0, 2.0,
- 4.0), capreomycin (CM, 1.25, 2.5, 5.0), ciprofloxacin (CIP, 0.5, 1.0,
- 2.0), clofazimine (CLO, 0.25, 0.5, 1.0), cycloserine (CS, 50, 60, 70),
- ethionamide (ETA, 1.25, 2.5, 5.0), kanamycin (KM, 1.25, 2.5, 5.0),
- ofloxacin (OFL, 0.5, 1.0, 2.0, 4.0). In phase II, specially selected 20
- isolates with some strains resistant to each drug were tested. Drug
- concentrations were adjusted based on the results in Phase I. CIP was
- dropped and rifabutin (RBT, 0.5, 1.0, 2.0) was included. The following
- preliminary critical concentrations (mcg/ml) for radiometric method were
- established: AN 1.0, CM 2.5, CLO 0.25, CS 100.0, ETA 1.25, KM 2.5, OFL
- 2.0, and RBT 1.0. Final recommendations will be made after finishing
- testing 30-50 recent clinical isolates in phase III.
- DE Antibiotics/*TOXICITY AIDS-Related Opportunistic Infections/DRUG
- THERAPY Capreomycin Comparative Study Drug Resistance, Microbial
- Human Microbial Sensitivity Tests/*METHODS Mycobacterium
- tuberculosis/*DRUG EFFECTS/GROWTH & DEVELOPMENT/ ISOLATION & PURIF
- Species Specificity Tuberculosis, Pulmonary/COMPLICATIONS/DRUG THERAPY
- MEETING ABSTRACT
-
- SOURCE: National Library of Medicine. NOTICE: This material may be
- protected by Copyright Law (Title 17, U.S.Code).
-
-