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Actinobaculum suis detection using polymerase chain reaction.

Cristina Román Amigo1, Debora Dirani Sena de Gobbi, Vasco Túlio de Moura Gomes

  • 1Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia (FMVZ), Universidade de São Paulo (USP), Avenida Professor Dr. Orlando Marques de Paiva 87 Cidade Universitária, 05508 270 São Paulo, SP, Brazil.

Thescientificworldjournal
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Summary
This summary is machine-generated.

A new polymerase chain reaction (PCR) method effectively detects Actinobaculum suis, a bacterium causing urinary infections in pigs. This PCR is more sensitive than traditional methods for identifying A. suis in sow urine and boar preputial swabs.

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Area of Science:

  • Veterinary Microbiology
  • Bacterial Pathogenesis

Background:

  • Actinobaculum suis is a significant cause of urinary tract infections in female swine.
  • The fastidious growth requirements of A. suis complicate its detection and prevalence estimation using traditional culture methods.

Purpose of the Study:

  • To develop and validate a specific polymerase chain reaction (PCR) assay for the detection and identification of Actinobaculum suis.
  • To compare the efficacy of the developed PCR method against conventional bacterial isolation techniques.

Main Methods:

  • Bacterial isolation and PCR analysis were conducted on 192 sow urine samples and 45 boar preputial swabs.
  • The PCR assay's specificity and detection limit were determined, with results compared to traditional culture methods.

Main Results:

  • The PCR assay demonstrated high specificity for A. suis, with a detection limit between 1.0 × 10(1) and 1.0 × 10(2) CFU/mL.
  • PCR detected A. suis in 8.9% of sow urine samples and 82.2% of boar preputial swabs.
  • Conventional culturing failed to detect A. suis in any urine samples, while identifying it in 31.1% of preputial swabs.

Conclusions:

  • The developed PCR technique is a highly efficient and sensitive method for detecting Actinobaculum suis in swine samples.
  • This PCR assay offers a significant improvement over traditional methods for diagnosing A. suis infections in pigs.