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Iranian Journal of Microbiology، جلد ۱۶، شماره ۴، صفحات ۵۳۶-۵۴۴
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عنوان انگلیسی Effect of low concentrations of lactic acid and temperature on the expression of adhesion, invasion, and toxin-encoding genes of Campylobacter jejuni from poultry
چکیده انگلیسی مقاله Background and Objectives: The consumption of contaminated poultry meat is considered as a significant route of campylobacteriosis transmission. Lactic acid is a disinfectant agent with bactericidal effects on Campylobacter spp. The purpose of this study was to assess the low concentrations of lactic acid effect and different temperatures on the transcriptomic responses of Campylobacter jejuni (C. jejuni) adhesion and virulence-associated genes including peb4, ciaB, cdtA, cdtB, and cdtC. Materials and Methods: The samples were incubated at 10°C and 22°C for 48 h upon exposure to 30% and 60% lactic acid. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of lactic acid was also determined. Then, gene expression was assessed using real-time polymerase chain reaction (RT-PCR). Results: Lactic acid had lower MIC and MBC levels at lower temperature. The utilization of both levels of lactic acid significantly reduced the expression of peb4, ciaB, cdtB, and cdtC genes over 48 h of incubation at 22°C. However, no significant difference was found in the expression of the cdtA gene between 10 and 22°C at 30% lactic acid. Conclusion: These results highlight the potential of low-concentration lactic acid in the downregulation of adhesion and virulence-associated genes as well as reduction of C. jejuni pathogenicity.
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نویسندگان مقاله | Aliakbar Jadidi
Student Research Committee, Fasa University of Medical Sciences, Fasa, Iran


| Abdolmajid Ghasemian
Noncommunicable Diseases Research ‏Center, Fasa University of Medical Sciences, Fasa, Iran


| Abbas Abdollahi
Department of Microbiology, School of Medicine, Fasa University of Medical Sciences, Fasa, Iran


| Tannaz Abbasi-Dokht
Department of Immunology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran; Cancer Research Center, Semnan University of Medical Sciences, Semnan, Iran


| Esmail Abdollahzadeh
International Sturgeon Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Rasht, Iran


| Rasoul Baharlou
Department of Immunology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran; Cancer Research Center, Semnan University of Medical Sciences, Semnan, Iran
نشانی اینترنتی https://ijm.tums.ac.ir/index.php/ijm/article/view/4560
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