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  • Title: Loop-mediated isothermal amplification assay for detection of Mycobacterium tuberculosis complex in infertile women.
    Author: Sethi S, Dhaliwal L, Dey P, Kaur H, Yadav R, Sethi S.
    Journal: Indian J Med Microbiol; 2016; 34(3):322-7. PubMed ID: 27514954.
    Abstract:
    BACKGROUND: Female genital tuberculosis (FGTB) has a profound impact on the reproductive health of patients including infertility. Conventional diagnostic techniques have low sensitivity and specificity as well as long turnaround time. There is a need of developing newer, rapid and practically adaptable technique, especially in low-income countries. OBJECTIVE: To standardize and evaluate loop-mediated isothermal amplification (LAMP) technique for diagnosis of FGTB. METHODS: A total of 300 endometrial biopsy samples from infertile females were subjected to Ziehl-Neelsen (ZN) staining, Lowenstein-Jensen culture, automated culture (BACTEC mycobacterial growth indicator tube), histopathological examination (HPE), nucleic acid amplification by polymerase chain reaction (PCR) and LAMP technique. Composite gold standard (either smear/culture/HPE/PCR positive) was considered for calculation of outcome parameters. RESULTS: The observed sensitivities of ZN smear, culture, HPE, PCR and LAMP were 2.94%, 10.29%, 8.82%, 95.59% and 66.18%, respectively. Overall concordance between PCR and LAMP was 63%, which shows a good agreement. CONCLUSION: This study is the first to evaluate LAMP in the diagnosis of FGTB and found it to be a rapid and convenient technique, especially in low resource endemic settings.
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