A quantitative TaqMan PCR assay for the detection of Mycoplasma suis.
J Appl Microbiol
; 111(2): 417-25, 2011 Aug.
Article
em En
| MEDLINE
| ID: mdl-21575112
AIM: To develop a TaqMan probe-based, highly sensitive and specific quantitative PCR (qPCR) assay for the detection and quantification of Mycoplasma suis in the blood of pigs. METHODS AND RESULTS: Primers and probes specific to Myc. suis 16S rRNA gene were designed. The qPCR assay's specificity, detection limit, intra- and inter-assay variability were evaluated and its performance was compared with a Myc. suis conventional PCR assay (cPCR). Blood of two experimentally infected pigs, 40 Indiana pigs, 40 Brazilian sows and 28 peccaries were tested. The assay detected as few as ten copies of Myc. suis plasmids and was 100-fold more sensitive than the cPCR. No cross-reactivity with nontarget pig mycoplasmas was observed. An average of 1·62 × 10(11) and 2·75 × 10(8) target copies ml(-1) of blood were detected in the acutely and chronically infected pigs, respectively. Three (7·5%) pigs and 32 (80·0%) sows were positive while all peccaries were negative for Myc. suis. CONCLUSION: The developed qPCR assay is highly sensitive and specific for Myc. suis detection and quantification. SIGNIFICANCE AND IMPACT OF THE STUDY: TaqMan qPCR is an accurate and quick test for detection of Myc. suis infected pigs, which can be used on varied instrumentation platforms.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Suínos
/
Doenças dos Suínos
/
Reação em Cadeia da Polimerase
/
Mycoplasma
/
Infecções por Mycoplasma
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
País/Região como assunto:
America do norte
/
America do sul
/
Brasil
Idioma:
En
Revista:
J Appl Microbiol
Assunto da revista:
MICROBIOLOGIA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Estados Unidos
País de publicação:
Reino Unido