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  • Title: [Identification of postoperative M. chelonae infection outbreak by polymerase chain reaction of 16s-23s ribosomal DNA spacer sequence].
    Author: Hu Q, Li L, Zhuang Y.
    Journal: Zhonghua Jie He He Hu Xi Za Zhi; 1999 Nov; 22(11):648-51. PubMed ID: 11776516.
    Abstract:
    OBJECTIVE: To determine the pathogen of the infection outbreak in a hospital in Shenzhen at gene level with molecular biological technique, and to establish a rapid identification method of M. chelonae subsp. abscessus by polymerase chain reaction technique. METHODS: A single pair of primers and oligonucleotides probe of M. chelonae subsp. abscessus were designed, according to the sequence of mycobacterium of 16s-23s ribosomal DNA spacer sequences. 53 clinical strains were amplified by polymerase chain reaction, then dot-blot hybridization of PCR product was made. On the basis of this study, 259 lesion, tissue and normal tissue were amplified by 16s-23s rDNA PCR. RESULTS: 380 bp PCR product for 53 clinical strains was yielded by 16s-23s rDNA PCR, in the meantime, the specific hybridization dot appeared. The PCR positive rate of 259 specimens was 60.6%. CONCLUSIONS: The PCR products and dot-blot hybridization showed that the pathogen of the infection outbreak was M. chelonae subsp. abscessus at gene level. The 16s-23s rDNA PCR investigative system is sensitive and specific, which can identify M. chelonae subsp. abscessus.
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