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Examining the Extent of Contamination, Antibiotic Resistance, and Genetic Diversity of Clostridioides (Clostridium) Difficile Strains in Meat and Feces of Some Native Birds of Iran Publisher Pubmed



Ansarian Barezi A1 ; Shakerian A2 ; Rahimi E1 ; Esfandiari Z3
Authors
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Authors Affiliations
  1. 1. Department of Food Hygiene, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
  2. 2. Research Center of Nutrition and Organic Products (R.C.N.O.P), Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
  3. 3. Nutrition and Food Security Research Center, Department of Food Science and Technology, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran

Source: BioMed Research International Published:2023


Abstract

Clostridioides (Clostridium) difficile (C. difficile) is one of the essential enteropathogens in humans and livestock and is a severe health threat, according to the Centre for Disease Control and Prevention. Also, antimicrobials are one of the most critical risk factors for C. difficile infection (CDI). The present study examined the infection, antibiotic resistance, and genetic diversity of the C. difficile strains in the meat and feces of some native birds (chicken, duck, quail, and partridge) in the Shahrekord region, Iran, from July 2018 to July 2019. Samples were grown on CDMN agar after an enrichment step. To determine the toxin profile, the tcdA, tcdB, tcdC, cdtA, and cdtB genes were detected via multiplex PCR. The antibiotic susceptibility of these isolates was examined using the disk diffusion method and followed based on MIC and epsilometric test. 300 meat samples of chicken, duck, partridge, and quail and 1100 samples of bird feces were collected from six traditional farms in Shahrekord, Iran. Thirty-five meat samples (11.6%) and 191 fecal samples (17.36%) contained C. difficile. Moreover, five toxigenic samples isolated had 5, 1, and 3 tcdA/B, tcdC, and cdtA/B genes. Out of the studied strains isolated from the 226 samples, two isolates belonging to ribotype RT027 and one isolated RT078 profile related to native chicken feces were observed from chicken sample. The antimicrobial susceptibility testing showed that all the strains are resistant to ampicillin, 28.57% are resistant to metronidazole, and 100% were susceptible to vancomycin. Based on the results, it can be concluded that the raw meat of birds might be a source of resistant C. difficile that poses a hygienic threat to the consumption of native bird meat. Nevertheless, further studies are essential to understand additional epidemiological features of C. difficile in bird meat. © 2023 Akbar Ansarian Barezi et al.
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