Huỳnh Tấn Lộc * Lý Thị Liên Khai

* Tác giả liên hệ (htloc3689@gmail.com)

Abstract

The study was conducted to investigate the prevalence and determination of Salmonella Weltevreden pathogenicity genes on geckos in Soc Trang, Tien Giang and Ben Tre provinces from August 2015 to July 2016. A total of 805 geckos’ feces samples were collected at swine farms, households with livestock activities and households. The results showed 132 samples were positive with  Salmonella at proportion 19,25% and with the predominant serovar being S. Weltevreden was 50/132 strains at rate 35.3%. The prevalence of Salmonella on geckos was not significantly different by samples at swine farms (21,25%) and households with livestock activities (15,87%); however, it was significantly different by samples at swine farms and households without livestock activities (11,88%). Salmonella Weltevreden strains were also found in swine farms (19 strains), households with livestock activities (17 strains) and households (14 strains). Up to 4/4 pathogenicity genes were determined with the proprtion being hilD, sifA, sopB and pefA at 100%. None of the isolated S. Weltevreden strains were resistant to tested antibiotics.
Keywords: Geckos, Salmonella Weltevreden, pathogenicity genes, Soc Trang, Tien Giang, Ben Tre

Tóm tắt

Nghiên cứu được thực hiện nhằm khảo sát sự lưu hành của chủng Salmonella Weltevreden trên thằn lằn ở 3 tỉnh Sóc Trăng, Tiền Giang và Bến Tre từ tháng 8/2015 đến 7/2016. Từ 805 mẫu phân thằn lằn được thu thập ở các trại chăn nuôi heo, hộ gia đình có chăn nuôi và hộ gia đình không có chăn nuôi heo tìm thấy 132 mẫu dương tính với vi khuẩn Salmonella chiếm tỷ lệ 16,40%, trong đó chủng Salmonella Weltevreden là chủng phổ biến nhất với 50/132 chủng (37,88%). Tỷ lệ dương tính với vi khuẩn Salmonella trên thằn lằn không có sự khác nhau giữa trại chăn nuôi (21,25%) và hộ dân có chăn nuôi (15,87%) nhưng có sự khác nhau giữa trại chăn nuôi và hộ dân không có chăn nuôi (11,88%). Có sự lưu hành của các chủng S. Weltevreden tại các trại chăn nuôi (19 mẫu), hộ dân có chăn nuôi (17 mẫu) và hộ không có chăn nuôi (14 mẫu). Có 4/4 gene gây bệnh được phát hiện,  các gene gây bệnh hilD, sifA, sopB và pefA được tìm thấy với tỷ lệ 100%. Không có sự đề kháng với kháng sinh ở các chủng S. Weltevreden phân lập được.
Từ khóa: Bến Tre, gene gây bệnh, Salmonella Weltevreden, Sóc Trăng, thằn lằn, Tiền Giang

Article Details

Tài liệu tham khảo

Altier, C., Suyemoto, M., and Lawhon, S.D., 2000. Regulation of Salmonella enterica serovar Typhimurium invasion gen by csrA. Journal of Infectious Diseases and Immunity. 68: 6790–6797.

An, T.T.Vo., Duijkeren, Van E., Fluit, A.C., and Heck, M.E.O.C., 2006. Distribution of Salmonella Enterica serovars from humans, livestock and meat in Viet Nam and dominance of Salmonella Typhimurium phage type 90, Veterinary Microbiology. 113: 153-158.

Bauer, A. W., Kirby, W. M. M., Sherris, J. C., and Turck, M., 1966. Antibiotic Susceptibility Testing by a Standardized Single Disk Method. American Journal of Clinical Pathology. 45: 493–496.

Clinical and Laboratory Standards Institute (CLSI), 2014. Performance standards for antimicrobial disk susceptibility test: Approved standards 24th ed. M100-S24, Wayne, PA. 230 pages.

Dame, E.A., and Petren, K., 2006. Behavioural mechanisms of invasion and displacement in Pacific island geckos (Hemidactylus). Animal Behaviour. 71: 1165–1173.

Devi, S.J.N., and Murray, C.J., 1991. Cockroaches (Blatta and Periplaneta species) as reservoirs of drug-resistant Salmonella. Epidemiology Infection Journal Impact Factor. 107: 357-361.

Groisman, E.A., and Ochman, H., 1997. How Salmonella became a pathogen. Trends Microbiology Journal. 5: 343–349.

Heithoff, D.M., Shimp, W.R., Lau, P.W., Badie, G., Enioutina, E.Y., Daynes, R.A., Byrne, B.A., House J.K., Mahan M.J., 2008. Human Salmonella clinical isolates distinct from those of animal origin. Applied and Environmental Microbiology. 74: 1757–1766.

Hoàng Thị Nghiệp và Võ Thị Trinh, 2013. Nguồn tài nguyên lưỡng cư, bò sát ở tỉnh Tiền Giang. Tạp chí ĐHSP TPHCM. Số 51, trang 81-89.

Hur, J., Choi, Y.Y., Park, J.H., Jeon, B.W., Lee, H.S., Kim, A.R., Lee, J.H., 2011. Antimicrobial resistance, virulence-associated gens, and pulsed-field gel electrophoresis profiles of Salmonella enterica subsp. enterica serovar Typhimurium isolated from piglets with diarrhea in Korea. The Canadian Journal of Veterinary Research. 75: 49-56.

ISO/TR 6579-3:2014, 2014. Microbiology of the food chain - Horizontal method for the detection, enumeration and serotyping of Salmonella, Part 3: Guidelines for serotyping of Salmonella spp. ISO/TC 34/SC 9:33, 33 pages.

Lwanga, S.K., and Lemeshow, S., 1991. Sample Size Determination in Health Studies: A Practical Manual. Genva, Switzerland: World Health Organization. 80 pages.

Middleton, D.M.R.L., 2008. The prevalence of Salmonella and the spatial distribution of its amongst New Zealand’s native lizards, A thesis presented in partial fulfillment of the requirements for the degree of Master of Science in Zoology, Massey University, Palmerston North, New Zealand.

Miguel, K., and Sam, R.T., 1981. Lizards in the Ecology of Salmonellosis in Panama. Applied and Enviromental Microbiology. 41: 1248-1253.

Mitchell, M.A., 2006. Salmonella: Diagnostic methods for reptiles. In: Marder DR (ed) Reptile Medicine and Surgery, pp. 900-901.

Moreno, C.M., Ojeda Vargas, M.M., Echeita, A., and Usera, M.A., 1995. Occurrence of Salmonella in cold-blooded animals in Gran Canaria, Canary Islands, Spain. Antoie Leeuwenhoek. 68: 191-194.

Oboegbulem, S.I., and Iseghohimhen, A.U., 1985. Wall Geckos (Geckonidae) as reservoirs of Salmonellae in Nigeria: problems for epidemiology and public health. International Journal of Zoonoses, 12: 228-232.

Ochman, H., and Groisman, E.A., 1994. The ogigin and evolution of species differrnces in Escherichia coli and Salmonella Typhimurium. Molecular ecology and evolution: Approaches and application. 69: 479-493.

Pasmans, F., Martel, A., Boyen, F., Vandekerchove, D, Wybo, I., Immerseel, F., Heyndrickx, M., Collard, J.M., Ducatelle, R., and Haesebrouck, F., 2005. Characterization of Salmonella isolates from captive lizards. Veterinary Microbiology. 110: 285-291.

Popoff, M.Y., and Minor, L.L., 1997. Antigenic formulas of the Salmonella serovars. 7th revision. World Health Organization Collaborating Centre for Reference and Research on Salmonella. Paris, France: Pasteur Institute. 166 pages.

Pushpa, A., Singh, S.M., and Bhattacharya, M.M., 1985. An outbreak of food poisoning in a family due to Salmonella Weltevreden at Delhi. Journal Of Diarrhoeal Diseases Research. 3: 224-225.

Randall, R.J., Elías, B.C., Juan, G.A., and Laura, P.P., 2015. Salmonella Isolates in the Introduced Asian House Gecko (Hemidactylus frenatus) with Emphasis on Salmonella Weltevreden, in Two Regions in Costa Rica. Vector-borne and Zoonotic Disease. 15: 550-555.

Sood, L.R., and Basu, S., 1979. Bacteriophage typing of Salmonella Weltevreden. National Salmonella and Escherichia Centre, Central Research Institute, Kasauli, India, pp. 595 – 604.

Soto, S. M., Irene, R.G., Rosario, R.M., Jordi, V., and Carmen M.M., 2006. Detection of virulence determinants in clinical strains of Salmonella enterica serovar Enteritidis and mapping on macrorestriction profiles. Journal of Medical Microbiology. 55: 365–373.

Soumet, C., Ermel, G., Fach, P., Colin, P., 1994. Evaluation of different DNA extraction procedures for the detection of Salmonella from chicken products by polymerase chain reaction. Lett. Journal of Applied Microbiology. 19: 294-298.

Tikader, B.K., and Sharma, R.C., 1992. Handbook Indian Lizards. Zoological Survey of India, Calcutta, India. 250 pages.

Tran, T.P., Ly, T.L.K., Nguyen, T.T., Akiba, Ogasawara, N., Sinoda, D., Okatani, T.A., Hayashidani, H., 2004. Prevalence of Salmonella spp. in pigs, chickens and ducks in Mekong delta of Viet Nam . Journal Veterinary Medicine Science. 68: 1011-1014.

Williams, S., Mahomed Patel, Peter Markey, Rosanne Muller, Suresh Benedict, Ian Ross, Michael Heuzenroeder, Dianne Davos, Scott Cameron, and Vicki Krause, 2015. Salmonella in the tropical household environment-Everyday, everywhere. Journal of Infection. 71: 642-648.

World Health Organisation (WHO), 2003. Global Salm-Surv Laboratory protocols level 1 training course isolation of Salmonella. Fourth edition. 19 pages.