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[Identification of Mycobacterium tuberculosis complex and Mycobacterium avium-intracellulare complex by using
H Kikuchi1, S Shoji, A Watanabe
1Department of Internal Medicine, Tohoku University, Sendai, Japan.
Abstract:
A total of 31 clinical isolates of mycobacteria consisting of 21 strains of M. avium-intracellulare complex (ten strains each of M. avium and M. intracellulare identified by specific 125I-labeled DNA probes and one strain of M. avium-intracellulare complex identified by conventional biochemical tests) and 10 strains of M. tuberculosis (identified by a specific 125I-labeled DNA probe) were subjected to identification by hybridization protection assay (HPA) with an acridinium-ester (AE) labeled DNA probe. The results thus obtained were in complete agreement with those obtained by 125I-labeled DNA probes (30 strains) or by conventional biochemical tests (one strain). HPA by the AE-labeled DNA probe is safe, simple and rapid, and can be done with ease in any clinical laboratory.