@article{6876, keywords = {Adolescent, Child, Child, Preschool, DNA, Bacterial, Female, Humans, leprosy, Male, Mycobacterium leprae, polymerase chain reaction, Prospective Studies, Skin}, author = {Dayal R and Singh S P and Mathur P P and Katoch V M and Katoch K and Natrajan M}, title = {Diagnostic value of in situ Polymerase Chain Reaction in leprosy.}, abstract = {

OBJECTIVE: This prospective study was carried out to assess the diagnostic value of in situ Polymerase Chain Reaction in leprosy, particularly in enhancing the histopathological diagnosis.

METHOD: Clinical examination of 20 patients (< 16 yr) was done and skin smear for AFB was prepared. Biopsy of lesion site was taken for histopathological examination and in situ PCR testing.

RESULTS: The histopathological examination confirmed the clinical diagnosis in 45% cases only; non-specific histopathology was reported in the remaining 55% cases. In situ PCR showed a positivity of 57.1% in early/localized form of leprosy (IIBT) and 61.5% in (BB/BL) group. When compared to histopathology examination, a significant enhancement of 15% in diagnosis was seen. With in situ PCR, the diagnosis could be confirmed in 4/11 (36.3%) cases with non-specific histopathological features, (which is common in early disease) in addition to confirmation of 8/9 (88.8%) histopathologically-confirmed tissue sections. Histopathology and in situ PCR, combined together, confirmed the diagnosis in 13/20 cases (65% of total cases).

CONCLUSION: Thus, in situ PCR is an important diagnostic tool especially in early and doubtful cases of leprosy.

}, year = {2005}, journal = {Indian journal of pediatrics}, volume = {72}, pages = {1043-6}, month = {2005 Dec}, issn = {0973-7693}, doi = {10.1007/bf02724408}, language = {eng}, }