| ORIGINAL ARTICLE |
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| Year : 2016 | Volume
: 34
| Issue : 3 | Page : 322-327 |
Loop-mediated isothermal amplification assay for detection of Mycobacterium tuberculosis complex in infertile women
S Sethi1, L Dhaliwal2, P Dey3, H Kaur1, R Yadav1, S Sethi1
1 Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
2 Department of Obstetrics and Gynaecology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
3 Department of Cytology and Gynaecological Pathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
Correspondence Address:
S Sethi
Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research, Chandigarh
India
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0255-0857.188323
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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