Differentiation of Chlamydia psittaci and C. pecorum strains by species-specific PCR.

AUTOR(ES)

Sheehy, N

RESUMO

Sequence analyses 5' ends of the 60-kDa cysteine-rich outer membrane protein genes (Omp2) of Chlamydia psittaci and Chlamydia pecorum strains indicate that these species have approximately 70% nucleotide identity. On the basis of this sequence information, PCR primers were designed to allow the specific amplification of DNA extracted from C. psittaci S26/3 (abortion strain), P94/1 (pigeon strain), and C. pecorum W73 (fecal strain) in one reaction tube. By using nested reactions (with primers PCR-D1 and PCR-D2 followed by the specific primers and PCR-D2), 0.6, 0.2, and 8 inclusion-forming units of S26/3, P94/1 (both diluted in tissue culture-negative placental material), and W73 (diluted in culture-negative fecal material) per ml, respectively, were detected. The differentiation of C. psittaci and C. pecorum strains of ovine and bovine origins was carried out, and the results were in agreement with those obtained from AluI restriction enzyme analysis of DNA amplified from corresponding strains by PCR. This approach allows the simultaneous detection and typing of C. psittaci and C. pecorum strains and the identification of samples containing both species.

Documentos Relacionados

• Quantitative Detection of Chlamydia psittaci and C. pecorum by High-Sensitivity Real-Time PCR Reveals High Prevalence of Vaginal Infection in Cattle
• Development of a species-specific gene probe for Hyphomicrobium facilis with the inverse PCR.
• Species-Specific Identification of Human Adenoviruses by a Multiplex PCR Assay
• Species-Specific Identification of Human Adenoviruses by a Multiplex PCR Assay
• Detection of Chlamydia pneumoniae and Chlamydia psittaci in sputum samples by PCR.