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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)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 11/08/2022] [Accepted: 11/12/2022] [Indexed: 11/18/2022]
Abstract
The spread of vector habitats along with increasing human mobility can introduce atypical Leishmania species and hence can challenge existing diagnostic practices for rapid detection of active infection with species outside the narrow target range. Here we assessed the pan-Leishmania detection ability of isothermal recombinase polymerase amplification (RPA) assays targeting 18S rRNA gene, cathepsin L-like cysteine proteinase B (Cpb) gene, and kinetoplast minicircle DNA (kDNA) regions. While the lowest limit of detection of the 18S rRNA-RPA and Cpb-RPA assays were estimated as 12 and 17 standard DNA molecules, respectively, both assays could amplify genomic DNA of 7 pathogenic Leishmania species. Evaluation of 18S rRNA-RPA and our previously developed kDNA-RPA assays on 70 real-time PCR-positive leishmaniasis samples of varying pathologies resulted in sensitivity rates of 35.71% and 88.57%, respectively, while the combined sensitivity was 98.57%. Combinatorial application of 18S rRNA-RPA and kDNA-RPA assays can be recommended for further diagnostic assessments.
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Affiliation(s)
- Chiheb Louizi
- Institute for Medical Microbiology and Virology, University Medical Center Goettingen, Georg-August University, Göttingen, Germany
| | - Md Anik Ashfaq Khan
- Institute of Animal Hygiene and Veterinary Public Health, University of Leipzig, Leipzig, Germany; Nutrition and Clinical Services Division, International Centre for Diarrheal Disease Research Bangladesh, Dhaka, Bangladesh.
| | - Khaledul Faisal
- Nutrition and Clinical Services Division, International Centre for Diarrheal Disease Research Bangladesh, Dhaka, Bangladesh
| | - Rajashree Chowdhury
- Nutrition and Clinical Services Division, International Centre for Diarrheal Disease Research Bangladesh, Dhaka, Bangladesh
| | - Prakash Ghosh
- Nutrition and Clinical Services Division, International Centre for Diarrheal Disease Research Bangladesh, Dhaka, Bangladesh
| | - Faria Hossain
- Nutrition and Clinical Services Division, International Centre for Diarrheal Disease Research Bangladesh, Dhaka, Bangladesh
| | - Thilini Nisansala
- Faculty of Veterinary Medicine, Universiti Malaysia Kelantan, Pengkalan Chepa, Kota Baru, Kelantan, Malaysia; Faculty of Medical Sciences, University of Sri Jayewardenepura, Gangodawila, Nugegoda, Sri Lanka
| | - Shalindra Ranasinghe
- Faculty of Medical Sciences, University of Sri Jayewardenepura, Gangodawila, Nugegoda, Sri Lanka
| | - Javier Moreno
- WHO Collaborating Center for Leishmaniasis, National Center for Microbiology, Instituto de Salud Carlos III, Madrid, Spain
| | - Jorge Alvar
- Royal Academy of Medicine of Spain, Madrid, Spain
| | - Dinesh Mondal
- Nutrition and Clinical Services Division, International Centre for Diarrheal Disease Research Bangladesh, Dhaka, Bangladesh; Laboratory Sciences and Services Division, International Centre for Diarrheal Disease Research Bangladesh, Dhaka, Bangladesh
| | - Timo Buhl
- Department of Dermatology, Venereology and Allergology, University Medical Centre Göttingen, Georg-August University, Göttingen, Germany
| | - Carsten G K Lüder
- Institute for Medical Microbiology and Virology, University Medical Center Goettingen, Georg-August University, Göttingen, Germany
| | - Ahmed Abd El Wahed
- Institute of Animal Hygiene and Veterinary Public Health, University of Leipzig, Leipzig, Germany
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