Polymerase chain reaction for the diagnosis of bovine genital campylobacteriosis
Bovine genital campylobacteriosis is a common venereal disease of cattle; the prevalence of this disease can be underestimated mostly because of the nature of the etiological agent, the microaerobic Campylobacter fetus subspecies venerealis. The purpose of the current study was to evaluate the utilization of polymerase chain reaction (PCR) in the diagnosis of genital campylobacteriosis in samples obtained from bull prepuce aspirate, cow cervical mucus, and abomasum contents of aborted fetuses, collected into enrichment medium. Five different DNA extraction protocols were tested: thermal extraction, lysis with proteinase K, lysis with guanidine isothiocyanate, lysis with DNAzol, and lysis with hexadecyltrimethylammonium bromide (CTAB). The specificity, sensitivity, and technical application of the PCR assay were also evaluated with clinical samples and compared to bacterial isolation by standard culture. DNA extraction by the CTAB protocol provided better results in PCR, and it was able to detect 63 colony-forming units per ml of C. fetus. Out of 277 clinical samples tested, 68 (24%) were positive for Campylobacter fetus using PCR, while only 8 (2.8%) of the samples were positive by bacterial isolation in solid medium, proving the superiority of the PCR technique when compared to the standard isolation method, and providing evidence for its usefulness as a better screening test in cattle for the diagnosis of bovine genital campylobacteriosis.
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Colégio Brasileiro de Patologia Animal - CBPA
2010
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oai:scielo:S0100-736X20100012000052011-01-31Polymerase chain reaction for the diagnosis of bovine genital campylobacteriosisGroff,Ana C.M.Kirinus,Jackeline K.Silva,Mariana Sá eMachado,GustavoCosta,Mateus M.Vargas,Agueda P.C. Bovine genital campylobacteriosis Campylobacter fetus diagnosis abortion Bovine genital campylobacteriosis is a common venereal disease of cattle; the prevalence of this disease can be underestimated mostly because of the nature of the etiological agent, the microaerobic Campylobacter fetus subspecies venerealis. The purpose of the current study was to evaluate the utilization of polymerase chain reaction (PCR) in the diagnosis of genital campylobacteriosis in samples obtained from bull prepuce aspirate, cow cervical mucus, and abomasum contents of aborted fetuses, collected into enrichment medium. Five different DNA extraction protocols were tested: thermal extraction, lysis with proteinase K, lysis with guanidine isothiocyanate, lysis with DNAzol, and lysis with hexadecyltrimethylammonium bromide (CTAB). The specificity, sensitivity, and technical application of the PCR assay were also evaluated with clinical samples and compared to bacterial isolation by standard culture. DNA extraction by the CTAB protocol provided better results in PCR, and it was able to detect 63 colony-forming units per ml of C. fetus. Out of 277 clinical samples tested, 68 (24%) were positive for Campylobacter fetus using PCR, while only 8 (2.8%) of the samples were positive by bacterial isolation in solid medium, proving the superiority of the PCR technique when compared to the standard isolation method, and providing evidence for its usefulness as a better screening test in cattle for the diagnosis of bovine genital campylobacteriosis.info:eu-repo/semantics/openAccessColégio Brasileiro de Patologia Animal - CBPAPesquisa Veterinária Brasileira v.30 n.12 20102010-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-736X2010001200005en10.1590/S0100-736X2010001200005 |
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Groff,Ana C.M. Kirinus,Jackeline K. Silva,Mariana Sá e Machado,Gustavo Costa,Mateus M. Vargas,Agueda P.C. |
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Groff,Ana C.M. Kirinus,Jackeline K. Silva,Mariana Sá e Machado,Gustavo Costa,Mateus M. Vargas,Agueda P.C. Polymerase chain reaction for the diagnosis of bovine genital campylobacteriosis |
author_facet |
Groff,Ana C.M. Kirinus,Jackeline K. Silva,Mariana Sá e Machado,Gustavo Costa,Mateus M. Vargas,Agueda P.C. |
author_sort |
Groff,Ana C.M. |
title |
Polymerase chain reaction for the diagnosis of bovine genital campylobacteriosis |
title_short |
Polymerase chain reaction for the diagnosis of bovine genital campylobacteriosis |
title_full |
Polymerase chain reaction for the diagnosis of bovine genital campylobacteriosis |
title_fullStr |
Polymerase chain reaction for the diagnosis of bovine genital campylobacteriosis |
title_full_unstemmed |
Polymerase chain reaction for the diagnosis of bovine genital campylobacteriosis |
title_sort |
polymerase chain reaction for the diagnosis of bovine genital campylobacteriosis |
description |
Bovine genital campylobacteriosis is a common venereal disease of cattle; the prevalence of this disease can be underestimated mostly because of the nature of the etiological agent, the microaerobic Campylobacter fetus subspecies venerealis. The purpose of the current study was to evaluate the utilization of polymerase chain reaction (PCR) in the diagnosis of genital campylobacteriosis in samples obtained from bull prepuce aspirate, cow cervical mucus, and abomasum contents of aborted fetuses, collected into enrichment medium. Five different DNA extraction protocols were tested: thermal extraction, lysis with proteinase K, lysis with guanidine isothiocyanate, lysis with DNAzol, and lysis with hexadecyltrimethylammonium bromide (CTAB). The specificity, sensitivity, and technical application of the PCR assay were also evaluated with clinical samples and compared to bacterial isolation by standard culture. DNA extraction by the CTAB protocol provided better results in PCR, and it was able to detect 63 colony-forming units per ml of C. fetus. Out of 277 clinical samples tested, 68 (24%) were positive for Campylobacter fetus using PCR, while only 8 (2.8%) of the samples were positive by bacterial isolation in solid medium, proving the superiority of the PCR technique when compared to the standard isolation method, and providing evidence for its usefulness as a better screening test in cattle for the diagnosis of bovine genital campylobacteriosis. |
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Colégio Brasileiro de Patologia Animal - CBPA |
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2010 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-736X2010001200005 |
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