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For: Louizi C, Khan MAA, Faisal K, Chowdhury R, Ghosh P, Hossain F, Nisansala T, Ranasinghe S, Moreno J, Alvar J, Mondal D, Buhl T, Lüder CGK, Abd El Wahed A. Assessment of pan-Leishmania detection by recombinase polymerase amplification assay. Diagn Microbiol Infect Dis 2023;105:115862. [PMID: 36493571 DOI: 10.1016/j.diagmicrobio.2022.115862] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 11/08/2022] [Accepted: 11/12/2022] [Indexed: 11/18/2022]

For:	Louizi C, Khan MAA, Faisal K, Chowdhury R, Ghosh P, Hossain F, Nisansala T, Ranasinghe S, Moreno J, Alvar J, Mondal D, Buhl T, Lüder CGK, Abd El Wahed A. Assessment of pan-Leishmania detection by recombinase polymerase amplification assay. Diagn Microbiol Infect Dis 2023;105:115862. [PMID: 36493571 DOI: 10.1016/j.diagmicrobio.2022.115862] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 11/08/2022] [Accepted: 11/12/2022] [Indexed: 11/18/2022]

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Cited by Other Article(s)

Ghosh P, Chowdhury R, Faisal K, Khan MAA, Hossain F, Rahat MA, Chowdhury MAA, Mithila NT, Kamal M, Maruf S, Nath R, Kobialka RM, Ceruti A, Cameron M, Duthie MS, Wahed AAE, Mondal D. Evaluation of a Point-of-Need Molecular Diagnostic Tool Coupled with Rapid DNA Extraction Methods for Visceral Leishmaniasis. Diagnostics (Basel) 2023;13:3639. [PMID: 38132223 PMCID: PMC10742398 DOI: 10.3390/diagnostics13243639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/23/2023] [Accepted: 11/30/2023] [Indexed: 12/23/2023] Open

Abstract

A rapid, cost-effective, and simple nucleic acid isolation technique coupled with a point-of-need DNA amplification assay is a desirable goal for programmatic use. For diagnosis of Visceral Leishmaniasis (VL), Recombinase Polymerase Amplification (RPA) rapid tests for the detection of Leishmania DNA are versatile and have operational advantages over qPCR. To facilitate the delivery of the RPA test at point-of-need for VL diagnosis, we compared two rapid DNA extraction methods, SwiftDx (SX) and an in-house Boil and Spin (BS) method, coupled with RPA amplification, versus more widely used methods for DNA extraction and amplification, namely Qiagen (Q) kits and qPCR, respectively. A total of 50 confirmed VL patients and 50 controls, matched for age and gender, were recruited from Mymensingh, Bangladesh, a region highly endemic for VL. Blood samples were collected from each participant and DNA was extracted using Q, SX and BS methods. Following DNA extraction, qPCR and RPA assays were performed to detect L. donovani in downstream analysis. No significant differences in sensitivity of the RPA assay were observed between DNA extraction methods, 94.00% (95% CI: 83.45-98.75%), 90% (95% CI: 78.19-96.67%), and 88% (95% CI: 75.69-95.47%) when using Q, SX, and BS, respectively. Similarly, using qPCR, no significant differences in sensitivity were obtained when using Q or SX for DNA extraction, 94.00% (95% CI: 83.45-98.75%) and 92.00% (80.77-97.78%), respectively. It is encouraging that RPA and qPCR showed excellent agreement (k: 0.919-0.980) when different extraction methods were used and that the DNA impurities using BS had no inhibitory effect on the RPA assay. Furthermore, significantly higher DNA yields were obtained using SX and BS versus Q; however, a significantly higher parasite load was detected using qPCR when DNA was extracted using Q versus SX. Considering the cost, execution time, feasibility, and performance of RPA assay, rapid extraction methods such as the Boil and Spin technique appear to have the potential for implementation in resource-limited endemic settings. Further clinical research is warranted prior to broader application.

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Affiliation(s)

Prakash Ghosh Nutrition Research Division (NRD), International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka 1212, Bangladesh; (R.C.); (K.F.); (F.H.); (M.A.R.); (M.A.A.C.).; (N.T.M.); (M.K.); (S.M.); (R.N.); (D.M.)
Rajashree Chowdhury Nutrition Research Division (NRD), International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka 1212, Bangladesh; (R.C.); (K.F.); (F.H.); (M.A.R.); (M.A.A.C.).; (N.T.M.); (M.K.); (S.M.); (R.N.); (D.M.)
Khaledul Faisal Nutrition Research Division (NRD), International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka 1212, Bangladesh; (R.C.); (K.F.); (F.H.); (M.A.R.); (M.A.A.C.).; (N.T.M.); (M.K.); (S.M.); (R.N.); (D.M.)
Md. Anik Ashfaq Khan Institute of Animal Hygiene and Veterinary Public Health, Leipzig University, D-04103 Leipzig, Germany; (M.A.A.K.); (R.M.K.); (A.C.)
Faria Hossain Nutrition Research Division (NRD), International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka 1212, Bangladesh; (R.C.); (K.F.); (F.H.); (M.A.R.); (M.A.A.C.).; (N.T.M.); (M.K.); (S.M.); (R.N.); (D.M.)
Md. Abu Rahat Nutrition Research Division (NRD), International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka 1212, Bangladesh; (R.C.); (K.F.); (F.H.); (M.A.R.); (M.A.A.C.).; (N.T.M.); (M.K.); (S.M.); (R.N.); (D.M.)
Md. Arko Ayon Chowdhury Nutrition Research Division (NRD), International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka 1212, Bangladesh; (R.C.); (K.F.); (F.H.); (M.A.R.); (M.A.A.C.).; (N.T.M.); (M.K.); (S.M.); (R.N.); (D.M.)
Nishad Tasnim Mithila Nutrition Research Division (NRD), International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka 1212, Bangladesh; (R.C.); (K.F.); (F.H.); (M.A.R.); (M.A.A.C.).; (N.T.M.); (M.K.); (S.M.); (R.N.); (D.M.)
Mostafa Kamal Nutrition Research Division (NRD), International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka 1212, Bangladesh; (R.C.); (K.F.); (F.H.); (M.A.R.); (M.A.A.C.).; (N.T.M.); (M.K.); (S.M.); (R.N.); (D.M.)
Shomik Maruf Nutrition Research Division (NRD), International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka 1212, Bangladesh; (R.C.); (K.F.); (F.H.); (M.A.R.); (M.A.A.C.).; (N.T.M.); (M.K.); (S.M.); (R.N.); (D.M.)
Rupen Nath Nutrition Research Division (NRD), International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka 1212, Bangladesh; (R.C.); (K.F.); (F.H.); (M.A.R.); (M.A.A.C.).; (N.T.M.); (M.K.); (S.M.); (R.N.); (D.M.)
Rea Maja Kobialka Institute of Animal Hygiene and Veterinary Public Health, Leipzig University, D-04103 Leipzig, Germany; (M.A.A.K.); (R.M.K.); (A.C.)
Arianna Ceruti Institute of Animal Hygiene and Veterinary Public Health, Leipzig University, D-04103 Leipzig, Germany; (M.A.A.K.); (R.M.K.); (A.C.)
Mary Cameron London School of Hygiene and Tropical Medicine, University of London, London WC1E 7HT, UK;
Malcolm S. Duthie HDT Bio, Seattle, WA 98102, USA;
Ahmed Abd El Wahed Institute of Animal Hygiene and Veterinary Public Health, Leipzig University, D-04103 Leipzig, Germany; (M.A.A.K.); (R.M.K.); (A.C.)
Dinesh Mondal Nutrition Research Division (NRD), International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka 1212, Bangladesh; (R.C.); (K.F.); (F.H.); (M.A.R.); (M.A.A.C.).; (N.T.M.); (M.K.); (S.M.); (R.N.); (D.M.)

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