Document 0946 DOCN M9620946 TI Identification of Mycobacterium intracellulare by a polymerase chain reaction using species-specific primers. DT 9602 AU Yamazaki T; Nakamura RM; Department of Bacteriology, National Institute of Health, Tokyo,; Japan. SO Tuber Lung Dis. 1995 Aug;76(4):330-5. Unique Identifier : AIDSLINE MED/96048197 AB SETTING: The polymerase chain reaction (PCR) is a rapid and specific method used to amplify a certain DNA fragment. It is applicable to rapid diagnosis of mycobacterial infections. By use of species-specific primers, it is possible to identify mycobacteria by PCR. In this study, a newly constructed primer was tested for specificity for Mycobacterium intracellulare in the PCR. OBJECTIVE: M. intracellulare is one of the most frequently found bacteria in opportunistic infection in AIDS, and rapid identification of this species is important. The purpose of this study was to construct a primer specific to this species as a suitable tool for identification. DESIGN: PCR products of M. tuberculosis and M. intracellulare, obtained by using the primers YNP-1 and YNP-2, were sequenced and compared. They showed a difference in the base sequences. A sequence unique to M. intracellulare was used as the primer specific to this species. Various mycobacterial and non-mycobacterial DNAs were used as the primer specific to this species. Various mycobacterial and non-mycobacterial DNAs were used as the template to evaluate the specificity of the newly constructed primers, YNP-7 and YNP-8. Sputum samples were also examined by PCR using the primers. RESULTS: In total 25 species of culture mycobacterial and non-mycobacterial strains and 76 sputum samples were tested by PCR. Only M. intracellulare DNA was amplified with PCR using the primers YNP-7/8. CONCLUSION: The specificity of the newly constructed primers for M. intracellulare was confirmed. DE *Bacterial Typing Techniques Base Sequence DNA Primers DNA, Bacterial/*ANALYSIS Human Molecular Sequence Data Mycobacterium/CLASSIFICATION Mycobacterium avium Complex/*ISOLATION & PURIF Mycobacterium avium-intracellulare Infection/DIAGNOSIS Polymerase Chain Reaction/*METHODS Species Specificity Sputum/MICROBIOLOGY Support, Non-U.S. Gov't JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).