Performance evaluation of loop-mediated isothermal amplification, polymerase chain reaction and real-time polymerase chain reaction methods to detect Neisseria gonorrhoeae among symptomatic patients from India.

Autor:	Sethi S; Department of Medical Microbiology, PGIMER, Chandigarh, India., Saini G; Department of Medical Microbiology, PGIMER, Chandigarh, India., Sreenivasan P; Department of Medical Microbiology, PGIMER, Chandigarh, India., Gudisa R; Department of Medical Microbiology, PGIMER, Chandigarh, India., Sharma N; Department of Medical Microbiology, PGIMER, Chandigarh, India., Bagaa R; Department of Obstetrics and Gynaecology, PGIMER, Chandigarh, India., Yadav R; Department of Medical Microbiology, PGIMER, Chandigarh, India.
Jazyk:	angličtina
Zdroj:	International journal of STD & AIDS [Int J STD AIDS] 2024 Aug; Vol. 35 (9), pp. 727-732. Date of Electronic Publication: 2024 May 09.
DOI:	10.1177/09564624241252185
Abstrakt:	Background: Neisseria gonorrhoeae is one of the most important causative organisms in causing sexually transmitted infections. The clinical presentation of gonorrhoea mimics the symptoms of other sexually transmitted infections, and a proper diagnosis of the same is therefore crucial in patient management. The current study intended to compare different in-house molecular methods: that is, conventional PCR, real-time PCR, and LAMP assay for detection of N . gonorrhoeae . Methods: A total of 163 samples were collected from 145 patients who presented with urethral and vaginal discharge. Collected samples were processed for culture on GC agar base, and three different molecular diagnostic tests (conventional PCR, real-time PCR, and LAMP assay) were performed simultaneously on all the samples. Results: Culture of N . gonorrhoeae was positive in 17 out of 21 (80.9%) swab samples. With culture as the gold standard method, conventional and real-time PCR had a sensitivity of 94.1%, whereas the sensitivity of the LAMP assay was found to be 88.2%. All three methods had a specificity of 100%. In addition to swab samples, evaluation of urine samples by different molecular methods yielded a good concordance with a kappa value of 0.85 by conventional PCR and real-time PCR showing a perfect level of agreement, while the LAMP assay was found to have a substantial level of agreement. Conclusion: LAMP assay had a comparable diagnostic accuracy to other molecular methods for the detection of N . gonorrhoeae and can be used as a point-of-care test in resource-limited settings. Competing Interests: Declaration of conflicting interestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
Databáze:	MEDLINE
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