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Sinha S, Behera BK, Padhi SK, Sahoo S, Sahoo N, Biswal S, Sahoo P. Comparative evaluation of diagnostic methods for detection of Theileria spp. in cows. Anim Biotechnol 2023; 34:3514-3518. [PMID: 36695009 DOI: 10.1080/10495398.2023.2168197] [Citation(s) in RCA: 0] [Impact Index Per Article: 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] [Indexed: 01/26/2023]
Abstract
Theileriosis is a hemoprotozoan illness of cattle in tropical regions that poses a severe economic loss to dairy farmers in the form of production loss and mortality. We designed and optimized a multiplex real-time PCR by using Taq-Man® probe for detection and quantification of Theileria orientalis and Theileria annulata simultaneously by targeting 18 s rRna and MPSP (surface merozoite protein) genes, respectively. Fifty-five EDTA blood samples from clinically Theileria-suspected cows of three Theileria-endemic districts of Odisha were processed using acridine dye based fluorescent microscopy, Giemsa staining, and PCR. PCR revealed T. annulata and T. orientalis in 11/42 (26.11%) and 24/42 (57.14%) cases, respectively. Mixed infection due to both the Theileria spp. was recorded in 7/42 (16.66%). On comparison with gold standard test (PCR), the accuracy, sensitivity, and specificity were 92.72, 95.12, and 85.71% for Giemsa staining and 96.36, 97.56, and 92.85% for acridine orange dye. Multiplex real time PCR using Taq-Man probe detected two species of T. annulata and T. orientalis simultaneously. Acridine dye based fluorescent microscopy is comparatively easy and rapid method in detection of Thelieria spp.
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Affiliation(s)
- Shraddha Sinha
- Department of Epidemiology & Preventive Medicine, College of Veterinary Science & Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, India
| | - Bikash Kumar Behera
- Centre for Wildlife Health, College of Veterinary Science & Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, India
| | - Soumesh K Padhi
- Centre for Wildlife Health, College of Veterinary Science & Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, India
| | - Sonali Sahoo
- Department of Epidemiology & Preventive Medicine, College of Veterinary Science & Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, India
| | - Niranjana Sahoo
- Department of Epidemiology & Preventive Medicine, College of Veterinary Science & Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, India
| | - Sangram Biswal
- Department of Epidemiology & Preventive Medicine, College of Veterinary Science & Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, India
| | - Priyadarshini Sahoo
- Department of Epidemiology & Preventive Medicine, College of Veterinary Science & Animal Husbandry, Odisha University of Agriculture and Technology, Bhubaneswar, India
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Rocha-Junior MC, Rodrigues ES, Slavov SN, Assone T, Pedreschi M, de La Roque DGL, Sousa M, Olavarria V, Galvão-Castro B, da Fonseca BAL, Penalva de Oliveira AC, Smid J, Takayanagui OM, Casseb J, Covas DT, Kashima S. Rapid and Sensitive Qualitative Duoplex Real-Time PCR Method for Discriminatory and Confirmatory Diagnosis of HTLV-1 and HTLV-2 Infections: Brazilian Multicentric Study. Front Med (Lausanne) 2022; 9:881630. [PMID: 35755037 PMCID: PMC9218175 DOI: 10.3389/fmed.2022.881630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
Human T cell lymphotropic virus (HTLV) is the caustive agent of two main conditions i. e., the HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP) and the adult T-cell leukemia/lymphoma (ATLL). HTLV diagnosis is based on serological and molecular approaches; however, an accurate and validated method is still needed. The objective of this study was to establish a rapid and sensitive molecular test to confirm and discriminate HTLV 1/2 types. The test validation was performed as a multicentric study involving HTLV confirmation centers throughout Brazil. Proviral DNA was extracted from whole blood and the amplification was performed using in-house designed primer and probe sets targeting the pol genomic region. An internal control to validate the extraction and amplification was also included. The limit of detection (LoD) of the assay was four copies/reaction for HTLV-1 and 10.9 copies/reaction for HTLV-2. The diagnostic sensitivity of the platform was 94.6% for HTLV-1, 78.6% for HTLV-2, and the specificity was 100% for both viruses. Cross-reactions of the test with human viruses including HAV, HBV, HCV, HIV-1/2, and parvovirus B19 were not observed. During the multicentric validation, the test was used to screen a total of 692 blood samples obtained from previously confirmed HTLV-positive individuals. From these, 91.1% tested positive being concordant with the previously obtained results. In conclusion, our duoplex-RT-PCR-HTLV1 /2 presented adequate efficiency for HTLV-1/2 differentiation showing high sensitivity and specificity. Therefore, it can be a suitable tool for confirmation of suspected and inconclusive HTLV cases, prenatal and pre-transplant diagnosis, in Brazil and in other countries HTLV-endemic countries.
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Affiliation(s)
- Mauricio Cristiano Rocha-Junior
- Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Graduate Program in Biosciences and Biotechnology, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Evandra Strazza Rodrigues
- Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Center for Cell-Based Therapy CTC, Regional Blood Center of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Svetoslav Nanev Slavov
- Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Center for Cell-Based Therapy CTC, Regional Blood Center of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Tatiane Assone
- Laboratory of Medical Investigation LIM 56, Division of Dermatology, Medical School, University of São Paulo, São Paulo, Brazil
| | - Maíra Pedreschi
- Laboratory of Medical Investigation LIM 56, Division of Dermatology, Medical School, University of São Paulo, São Paulo, Brazil
| | - Debora Glenda Lima de La Roque
- Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Tropical Medicine Center, Federal University of Para, Belém, Brazil
| | - Maisa Sousa
- Tropical Medicine Center, Federal University of Para, Belém, Brazil
| | - Viviana Olavarria
- Centro de HTLV, Escola Bahiana de Medicina e Saúde Pública, Salvador, Brazil
| | | | | | | | - Jerusa Smid
- Laboratory of Medical Investigation LIM 56, Division of Dermatology, Medical School, University of São Paulo, São Paulo, Brazil
| | | | - Jorge Casseb
- Laboratory of Medical Investigation LIM 56, Division of Dermatology, Medical School, University of São Paulo, São Paulo, Brazil
| | - Dimas Tadeu Covas
- Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Center for Cell-Based Therapy CTC, Regional Blood Center of Ribeirão Preto, University of São Paulo, São Paulo, Brazil.,Department of Neurology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Simone Kashima
- Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Graduate Program in Biosciences and Biotechnology, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil.,Center for Cell-Based Therapy CTC, Regional Blood Center of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
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Safarkar R, Mehrabadi JF, Noormohammadi Z, Mirnejad R. Development a rapid and accurate multiplex real time PCR method for the detection Chlamydia trachomatis and Mycoplasma hominis. J Clin Lab Anal 2017; 31. [PMID: 28238212 DOI: 10.1002/jcla.22126] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 11/29/2016] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Sexually transmitted diseases easily spread among sexually active people and often have no symptoms. Rapid and accurate method for detecting these infections are necessary in early stages. The traditional detection methods of them are difficult and time-consuming. METHODS In this study, multiplex real time PCR was optimized for rapid identification of Chlamydia trachomatis and Mycoplasma hominis in a single tube and was performed with our designed primers. The sensitivity test was carried out to designed primers with diluted genomic DNA. To defined the specificity, non STD bacteria were used as DNA template. RESULTS This study indicated that the developed multiplex real time PCR can be an effective alternative procedure to the conventional methods for rapid and accurate identification of C Chlamydia trachomatis and Mycoplasma hominis. Multiplex real-time PCR Results of them were checked with melting curves. The sensitivity of our designed primer by multiplex real time PCR for Chlamydia trachomatis and Mycoplasma hominis were 4.78×1010 and 8.35×1010 , respectively, Which the primers did not amplify any product from a non-STD species. CONCLUSIONS Multiplex real time PCR by our new primers and analysis of melting curves were successfully usable for rapid and accurate detection of Chlamydia trachomatis and Mycoplasma hominis. This assay instead of traditional culture method, has considerable potential to be rapid, accurate and highly sensitive molecular diagnostic tool for simultaneous and direct detection.
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Affiliation(s)
- Roya Safarkar
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | - Zahra Noormohammadi
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Reza Mirnejad
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Ouedraogo AR, Kabre M, Bisseye C, Zohoncon TM, Asshi M, Soubeiga ST, Diarra B, Traore L, Djigma FW, Ouermi D, Pietra V, Barro N, Simpore J. [Molecular tests in diagnosis of Cytomegalovirus (CMV), human herpesvirus 6 (HHV-6) and Epstein-Barr virus (EBV) using real-time PCR in HIV positive and HIV-negative pregnant women in Ouagadougou, Burkina Faso]. Pan Afr Med J 2016; 24:223. [PMID: 27800078 PMCID: PMC5075482 DOI: 10.11604/pamj.2016.24.223.9406] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 05/23/2016] [Indexed: 11/13/2022] Open
Abstract
Introduction Les herpès virus EBV, CMV et HHV-6 sont des virus qui évoluent sous le modèle pandémique et sont responsables d’infections congénitales pouvant provoquer des séquelles graves chez les nouveau-nés. L’objectif de cette étude était de déterminer les prévalences de CMV, EBV et HHV-6 chez les femmes enceintes VIH(+) et VIH(-) à Ouagadougou. Méthodes Dans cette étude 200 échantillons de plasma sanguin de femmes enceintes dont 100 femmes VIH(+) et 100 femmes VIH(-) ont été diagnostiqués par PCR multiplex en temps réel pour les trois infections (EBV, CMV et HHV-6). Résultats Sur l’ensemble des 200 échantillons analysés, 18 (9,0%) étaient positifs à au moins un des trois virus, 12 (6,0%) étaient positifs au EBV, 13 (6,5%) au CMV et 12 (6,0%) positifs au HHV-6. Parmi les 18 cas d’infections, nous avons trouvé 10 cas (55,6%) de coïnfections dont 90,0% (9/10) d’infection multiple EBV/CMV/HHV6 et 10,0% de coinfection EBV/HHV6. Le taux d’infection HHVs était plus élevé chez les femmes VIH(-) que celles VIH(+) (12,0% versus 6,0%). Parmi les VIH(+), la PCR a révélé 7,1% (soit 6/85) d’infection HHVs chez celles qui n’étaient pas sous ARV contre 0% chez celles sous ARV. Conclusion Les herpès virus sont fréquents chez les femmes enceintes au Burkina Faso et pourraient constituer une menace chez ces dernières à cause des complications et des risques d’infection pour le nouveau-né.
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Affiliation(s)
- Alice Rogomenoma Ouedraogo
- Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), LABIOGENE UFR/SVT, Université de Ouagadougou BP 364 Ouagadougou, Burkina Faso
| | - Madeleine Kabre
- Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), LABIOGENE UFR/SVT, Université de Ouagadougou BP 364 Ouagadougou, Burkina Faso
| | - Cyrille Bisseye
- Laboratoire de Biologie Moléculaire et Cellulaire (LABMC), Université des Sciences et Techniques de Masuku (USTM), Franceville, Gabon
| | - Théodora Mahoukèdè Zohoncon
- Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), LABIOGENE UFR/SVT, Université de Ouagadougou BP 364 Ouagadougou, Burkina Faso
| | - Maleki Asshi
- Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), LABIOGENE UFR/SVT, Université de Ouagadougou BP 364 Ouagadougou, Burkina Faso
| | - Serge Théophile Soubeiga
- Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), LABIOGENE UFR/SVT, Université de Ouagadougou BP 364 Ouagadougou, Burkina Faso
| | - Birama Diarra
- Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), LABIOGENE UFR/SVT, Université de Ouagadougou BP 364 Ouagadougou, Burkina Faso
| | - Lassina Traore
- Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), LABIOGENE UFR/SVT, Université de Ouagadougou BP 364 Ouagadougou, Burkina Faso
| | - Florencia Wendkuuni Djigma
- Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), LABIOGENE UFR/SVT, Université de Ouagadougou BP 364 Ouagadougou, Burkina Faso
| | - Djénéba Ouermi
- Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), LABIOGENE UFR/SVT, Université de Ouagadougou BP 364 Ouagadougou, Burkina Faso
| | - Virginio Pietra
- Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), LABIOGENE UFR/SVT, Université de Ouagadougou BP 364 Ouagadougou, Burkina Faso
| | - Nicolas Barro
- Laboratoire de Biologie Moléculaire, d'Epidémiologie et de Surveillance des Bactéries et virus Transmissibles par les Aliments (LaBESTA), UFR/SVT, Université de Ouagadougou
| | - Jacques Simpore
- Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), LABIOGENE UFR/SVT, Université de Ouagadougou BP 364 Ouagadougou, Burkina Faso
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