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López Vásquez IA, Palomares Resendiz EG, Gutiérrez Hernández JL, Garrido Fariña GI, Tórtora Pérez JL, de Jesús Olmos Espejel J, Hernández Castro R, Sangari F, Suárez Güemes F, Díaz Aparicio E. Effects of vaccination with Brucella melitensis, strains Rev 1 ΔeryCD and Rev 1, on the reproductive system of young male goats. Rev Argent Microbiol 2024; 56:270-275. [PMID: 38453565 DOI: 10.1016/j.ram.2023.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/15/2023] [Accepted: 11/02/2023] [Indexed: 03/09/2024] Open
Abstract
The present study evaluates the effects of vaccination with Brucella melitensis strains Rev 1 ΔeryCD and Rev 1 on the reproductive system of male goats. Three groups, each of them consisting of 15 six-month-old brucellosis-free male goats, were studied. The first group was vaccinated with the Rev 1 ΔeryCD strain, the second group received Rev 1 and the third group was inoculated with sterile physiological saline solution. The dose of both strains was of 1×109CFU/ml. Over the course of the five months of this study, three males from each group were euthanized every month. Their reproductive tracts, spleens, and lymph nodes were collected to analyze serology, bacteriology PCR, histology, and immunohistochemistry. Results show that vaccination with B. melitensis strains Rev 1 ΔeryCD and Rev 1 does not harm the reproductive system of male goats. Strain B. melitensis Rev 1 ΔeryCD displayed a lower capacity to colonize the reproductive tract than strain Rev 1, which was attributed to its limited catabolic action toward erythritol.
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Affiliation(s)
- Isauro Alejandro López Vásquez
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Av. Universidad 3000, Colonia CU, Coyoacán, 04510 Ciudad de México, Mexico
| | - Erika Gabriela Palomares Resendiz
- CENID Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Km 15.5 Carretera Federal México-Toluca, Cuajimalpa, 05110 Ciudad de México, Mexico
| | - José Luis Gutiérrez Hernández
- CENID Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Km 15.5 Carretera Federal México-Toluca, Cuajimalpa, 05110 Ciudad de México, Mexico
| | - Germán Isauro Garrido Fariña
- Departamento de Ecología de Agentes Patógenos, Hospital General Manuel Gea González, Calzada de Tlalpan 4000 Tlalpan, 14080 Ciudad de México, Mexico
| | - Jorge Luis Tórtora Pérez
- Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Km 2.5 Carretera Cuautitlán-Teoloyucan, Cuautitlán, 54714 Estado de México, Mexico
| | - José de Jesús Olmos Espejel
- Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Km 2.5 Carretera Cuautitlán-Teoloyucan, Cuautitlán, 54714 Estado de México, Mexico
| | - Rigoberto Hernández Castro
- Departamento de Ecología de Agentes Patógenos, Hospital General Manuel Gea González, Calzada de Tlalpan 4000 Tlalpan, 14080 Ciudad de México, Mexico
| | - Félix Sangari
- Instituto de Biomedicina y Biotecnología de Cantabria (IBBTEC), CSIC - Universidad de Cantabria, Alberto Einstein 22, Santander, Cantabria, Spain
| | - Francisco Suárez Güemes
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad Universitaria, Av. Universidad 3000, Colonia CU, Coyoacán, 04510 Ciudad de México, Mexico
| | - Efrén Díaz Aparicio
- CENID Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Km 15.5 Carretera Federal México-Toluca, Cuajimalpa, 05110 Ciudad de México, Mexico.
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Evaluation of a Real-time PCR in Combination with a Cultivation Method for the Detection of Brucella Abortus in Organs of Infected Cattle in Southern Italy. J Vet Res 2022; 66:559-563. [PMID: 36846044 PMCID: PMC9944991 DOI: 10.2478/jvetres-2022-0062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 10/26/2022] [Indexed: 12/23/2022] Open
Abstract
Introduction Brucellosis is a widespread zoonosis of great economic importance for livestock farming in many areas of the world. It is a highly infectious disease which is diagnosed using conventional serological and microbiological methods. The aim of this study was to assess the efficiency of a specific real-time PCR in combination with broth cultivation in detecting Brucella spp. in organs of infected cattle, in order to compare the sensitivity of the two approaches and the time needed in them until a correct diagnosis is made. Material and Methods We examined 67 organs collected from 10 cattle slaughtered following a brucellosis outbreak which occurred in February 2016 in southern Italy. The research was carried out by enrichment broth cultivations in combination with a real-time PCR every week for six weeks. Results Brucella strains were isolated by cultivation from 44 enrichment broths of organs. All isolates were later identified as Brucella abortus by real-time PCR. Using this method in combination with cultivation made it possible to identify the same percentage of infected animals faster than by cultivation alone. Moreover, the same diagnostic results were obtained, on average two weeks before they would have been using only cultivation. In almost all cases, Brucella was detected by real-time PCR after the first week of cultivation in pre-enrichment Brucella broth, while the bacterial growth was evident usually after 2 or 3 weeks. Conclusion Real-time PCR has allowed results to be obtained faster than in the classical microbiological method, reducing the response times to identify positive animals by half.
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Saytekin AM, Ak S. Direct diagnosis of Brucella species through multiplex PCR formed by a new method. J Microbiol Methods 2018; 154:86-94. [PMID: 30336164 DOI: 10.1016/j.mimet.2018.10.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 10/13/2018] [Accepted: 10/14/2018] [Indexed: 10/28/2022]
Abstract
This study aimed to develop direct PCR methods, which enable the diagnosis of brucellosis agents from ruminant aborted fetus samples at species and genus levels, and determine the applicability of the newly developed methods. For this purpose, 137 lung, 137 liver, and 52 fetal stomach fluid samples belonging to 166 ruminant aborted fetuses (326 samples in total) were examined. Firstly, agent isolation and identification were performed and species-specific multiplex PCR (m-PCR) from the culture was applied to the samples. In addition, the Mayer-Scholl m-PCR method was modified and termed 'modified Mayer-Scholl', and genus specific Bcsp31 PCR was also modified with minor changes. Four different methods were applied to direct examination samples and the obtained results were compared. The conventional culture method was set as the standard method to which sensitivities and specificities of the molecular methods were calculated. According to the assessments on the basis of fetus (n = 166), sensitivity and specificity values for modified Mayer-Scholl m-PCR method were 94.11% and 98.76%, and the same indicators for the modified Bcsp31 PCR were 95.29% and 98.76%, respectively. When all organ samples were taken into account (n = 326), sensitivity and specificity values for the modified Mayer-Scholl m-PCR method were 85.38% and 98.06%, and for the modified Bcsp31 PCR, they were 83.62% and 98.06%, respectively. As a result, it was found that the diagnostic power of the tests were 'high' when results were evaluated at fetus level. On the other hand, it was found to be 'clinically useful' when evaluated at organ level. We concluded that species level identifications can be made through the modified Mayer-Scholl method, which is a direct m-PCR method, with a high diagnostic power by specifying DNAs belonging to Brucella species directly from clinical samples.
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Affiliation(s)
- Ahmet Murat Saytekin
- Reference Diagnosis Laboratory for Brucellosis, Pendik Veterinary Control Institute, 34890, İstanbul, Turkey.
| | - Seyyal Ak
- Department of Microbiology, Faculty of Veterinary Medicine, İstanbul University-Cerrahpaşa, 34320 İstanbul, Turkey
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Moulana Z, Roushan MRH, Marashi SMA. Evaluation of Different Primers for Detection of Brucella by Using PCR Method. Electron Physician 2016; 8:3222-3227. [PMID: 28070255 PMCID: PMC5217814 DOI: 10.19082/3222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 06/14/2016] [Indexed: 01/02/2023] Open
Abstract
INTRODUCTION Brucellosis is a worldwide zoonosis and a significant cause of loss of health in humans and animals. Traditionally, classic diagnosis is carried out by isolation of Brucella, which is time-consuming, technically challenging and potentially dangerous. The aim of this study was to expand a molecular test that would be used for the develop detection of Brucella in a single reaction with high sensitivity and specificity, by targeting IS711element. METHODS This study was carried out from 2015 to 2016 at the Ayatolla Rohani hospital in Babol, Iran. The present study was designed to develop PCR assay, based on IS711 gene for rapid diagnosis of Brucella spp. and immediate detection of Brucella, with high sensitivity and specificity. Four pairs of oligo-nucleotide primers with sizes of 547, 403, 291 and 127bp respectively, were planned to exclusively amplify the targeted genes of Brucella species. RESULTS Our results show that, five PCR primers set up, would be helpful in amplifying the DNAs from the genus Brucella with high specificity and sensitivity so it can be 12 fg, for Brucella species to provide a valuable tool for diagnosis. CONCLUSION This method can be more useful than serological and biochemical tests and in addition, this reduces the number of required tests more rapidly and economically.
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Affiliation(s)
- Zahra Moulana
- Ph.D. in Biomedical Sciences, Infectious Diseases and Tropical Medicine Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Mohammad Reza Hasanjani Roushan
- Professor of Infectious Diseases, Infectious Diseases and Tropical Medicine Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Seyed Mahmoud Amin Marashi
- Assistant Professor in Medical Bacteriology Department of Microbiology and Immunology Alborz University of medical sciences, Karaj, Iran
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Gopaul KK, Dainty AC, Muchowski JK, Dawson CE, Stack JA, Whatmore AM. Direct molecular typing of Brucella
strains in field material. Vet Rec 2014; 175:282. [DOI: 10.1136/vr.102674] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- K. K. Gopaul
- Department of Bacteriology; Animal Health and Veterinary Laboratories Agency; Woodham Lane New Haw Surrey KT15 3NB UK
| | - A. C. Dainty
- Department of Bacteriology; Animal Health and Veterinary Laboratories Agency; Woodham Lane New Haw Surrey KT15 3NB UK
| | - J. K. Muchowski
- Department of Bacteriology; Animal Health and Veterinary Laboratories Agency; Woodham Lane New Haw Surrey KT15 3NB UK
| | - C. E. Dawson
- Department of Bacteriology; Animal Health and Veterinary Laboratories Agency; Woodham Lane New Haw Surrey KT15 3NB UK
| | - J. A. Stack
- Department of Bacteriology; Animal Health and Veterinary Laboratories Agency; Woodham Lane New Haw Surrey KT15 3NB UK
| | - A. M. Whatmore
- Department of Bacteriology; Animal Health and Veterinary Laboratories Agency; Woodham Lane New Haw Surrey KT15 3NB UK
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Vejarano MP, Matrone M, Keid LB, Rocha VCM, Ikuta CY, Rodriguez CAR, Salgado VR, Ferreira F, Dias RA, Telles EO, Ferreira Neto JS. Evaluation of four DNA extraction protocols for Brucella abortus detection by PCR in tissues from experimentally infected cows with the 2308 strain. Vector Borne Zoonotic Dis 2013; 13:237-42. [PMID: 23421881 DOI: 10.1089/vbz.2011.0923] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This study compared 4 protocols for DNA extraction from homogenates of 6 different organs of cows infected with the Brucella abortus 2308 strain. The extraction protocols compared were as follows: GT (guanidine isothiocyanate lysis), Boom (GT lysis with the carrying suspension diatomaceous earth), PK (proteinase K lysis), and Santos (lysis by boiling and freezing with liquid nitrogen). Positive and negative gold standard reference groups were generated by classical bacteriological methods. All samples were processed with the 4 DNA extraction protocols and amplified with the B4 and B5 primers. The number of positive samples in the placental cotyledons was higher than that in the other organs. The cumulated results showed that the Santos protocol was more sensitive than the Boom (p=0.003) and GT (p=0.0506) methods and was similar to the PK method (p=0.2969). All of the DNA extraction protocols resulted in false-negative results for PCR. In conclusion, despite the disadvantages of classical bacteriological methods, the best approach for direct diagnosis of B. abortus in organs of infected cows includes the isolation associated with PCR of DNA extracted from the cotyledon by the Santos or PK methods.
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Affiliation(s)
- M P Vejarano
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil.
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Mirnejad R, Doust RH, Kachuei R, Mortazavi SM, Khoobdel M, Ahamadi A. Simultaneous detection and differentiates of Brucella abortus and Brucella melitensis by combinatorial PCR. ASIAN PAC J TROP MED 2012; 5:24-8. [PMID: 22182638 DOI: 10.1016/s1995-7645(11)60239-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Revised: 09/15/2011] [Accepted: 11/15/2011] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE To evaluate simultaneous detection and differentiates of Brucella abortus (B. abortus) and Brucella melitensis (B. melitensis) through the combinatorial PCR method. METHODS This study was designed using three primers that could simultaneously identify and differentiate two major species of pathogenic Brucella in humans and animals. Identification and differentiation of each species using the size of the PCR product were determined. To determine the specificity of the method, bacteria close to the genus Brucella were used. Finally, to confirm PCR products, In addition to the products sequence, RFLP was performed on PCR products using restriction enzymes. RESULTS The method of optimized combinatorial PCR in this study could simultaneously detect and differentiate B. abortus and B. melitensis with high specificity and sensitivity in clinical samples. Differentiation of species is based on the resulting bands; therefore, the band 494 bp for B. abortus and 733 bp for B. melitensis were obtained. RFLP and sequencing results confirmed PCR results. CONCLUSIONS The results of this study shows that without routine diagnostic methods such as culture and serology tests, using the molecular method of combinatorial PCR, important species of Brucella can be simultaneously identified and differentiated in clinical samples.
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Affiliation(s)
- Reza Mirnejad
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
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Safarpoor Dehkordi F. Prevalence study of Bovine viral diarrhea virus by evaluation of antigen capture ELISA and RT-PCR assay in Bovine, Ovine, Caprine, Buffalo and Camel aborted fetuses in Iran. AMB Express 2011; 1:32. [PMID: 22018096 PMCID: PMC3223133 DOI: 10.1186/2191-0855-1-32] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Accepted: 10/21/2011] [Indexed: 11/17/2022] Open
Abstract
Bovine viral diarrhea virus is a pestivirus in the family Flaviviridae that cause abortions and stillbirths in livestock and its traditional diagnosis is based on cell culture and virus neutralization test. In this study, for more sensitive, specific detection and determined the prevalence of virus in aborted Bovine, Ovine, Caprine, Buffalo and Camel fetuses the antigen capture ELISA and RT-PCR were recommended. From the total of 2173 aborted fetuses, 347 (15.96%) and 402 (18.49%) were positive for presence of Bovine viral diarrhea virus by antigen capture ELISA and RT-PCR respectively. Statistical analysis of data showed significant differences between ELISA and RT-PCR for detection of virus in aborted fetuses. These results indicate a high presence of this pathogen in Iran and that RT- PCR is considerably faster and more accurate than ELISA for identification of Bovine viral diarrhea virus. To our knowledge the Camels and Bovine are the most resistant and sensitive to Bovine viral diarrhea's abortions respectively and the prevalence of virus in Caprine is more than Ovine aborted fetuses. This study is the first prevalence report of Bovine viral diarrhea virus in aborted Bovine, Ovine, Caprine, Buffalo and Camel fetuses by evaluation of ELISA and RT-PCR in Iran.
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