Extraction and detection of Mycobacterium leprae DNA from ZNCF-stained skin smear slides for better identification of negative skin smears.

Abstract

Abstract Identification of Mycobacterium leprae, which causes leprosy, is done by Ziehl Neelsen Carbol Fuchsin (ZNCF) stained slit skin smear microscopy that aids in the diagnosis and quantification of approximate bacterial load carried by the patient. We attempted M. leprae DNA extraction from 46 stained slit skin smear negative slides, using Proteinase K and SDS lysis, followed by ethanol precipitation. M. leprae specific primers (16SrRNA) were used for PCR-based amplification of DNA. We could detect M. leprae DNA in 15 (32.6%) samples. The method can be useful in the diagnosis of apparently slit skin smear negative leprosy cases.

• Authors: R R Kamble, V S Shinde, S P Madhale, A A Kamble, B P Ravikumar, R S Jadhav
• Journal: Indian journal of medical microbiology (Indian J Med Microbiol) 2010 Jan-Mar Vol. 28 Issue 1 Pg. 57-9 ISSN: 1998-3646 [Electronic] United States
• PMID: 20061767 (Publication Type: Evaluation Study, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• DNA Primers
• DNA, Bacterial
• Detergents
• RNA, Bacterial
• RNA, Ribosomal, 16S
• Sodium Dodecyl Sulfate
• Endopeptidase K

Topics

• DNA Primers (genetics)
• DNA, Bacterial (isolation & purification)
• Detergents (pharmacology)
• Endopeptidase K (metabolism)
• Humans
• Leprosy (diagnosis, microbiology)
• Mycobacterium leprae (genetics)
• Pathology, Molecular (methods)
• Polymerase Chain Reaction (methods)
• RNA, Bacterial (genetics)
• RNA, Ribosomal, 16S (genetics)
• Skin (microbiology, pathology)
• Sodium Dodecyl Sulfate (pharmacology)