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Journal of Clinical Microbiology logoLink to Journal of Clinical Microbiology
. 1991 May;29(5):906–910. doi: 10.1128/jcm.29.5.906-910.1991

Application of a polymerase chain reaction for the detection of Mycobacterium leprae in skin tissues.

M Y de Wit 1, W R Faber 1, S R Krieg 1, J T Douglas 1, S B Lucas 1, N Montreewasuwat 1, S R Pattyn 1, R Hussain 1, J M Ponnighaus 1, R A Hartskeerl 1, et al.
PMCID: PMC269906  PMID: 2056057

Abstract

The polymerase chain reaction (PCR) based on the selective amplification of a 530-bp fragment of the gene encoding the proline-rich antigen of Mycobacterium leprae was applied on sections of fixed or frozen biopsy samples from leprosy patients. A simple procedure for the extraction of DNA from M. leprae in clinical specimens that provided suitable template DNA for amplification was developed. When PCR was applied on frozen sections, positive amplification in samples from all untreated acid-fast bacillus (AFB)-positive patients and in samples from 56% of the untreated AFB-negative patients could be detected, while biopsy samples from patients with skin diseases other than leprosy were all PCR negative. With neutral Formalin-fixed biopsy samples, positive amplification in 92% of the samples from untreated AFB-positive patients and in 61% of the samples from untreated AFB-negative patients could be detected by PCR. Biopsy samples exposed to mercuric chloride or nonbuffered formaldehyde containing fixatives were not suitable for application of PCR. This PCR holds promise as a tool for studies on M. leprae infection.

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Selected References

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