Lertwatcharasarakul Preeda, Phatthanakunanan Sakuna, Tulayakul Phitsanu
Department of Veterinary Pathology, Faculty of Veterinary Medicine, Kasetsart University, Nakhon Pathom, Thailand.
Faculty of Veterinary Medicine, Kamphaeng Saen Veterinary Diagnostic Center, Kasetsart University, Nakhon Pathom, Thailand.
Front Vet Sci. 2025 Jun 9;12:1584940. doi: 10.3389/fvets.2025.1584940. eCollection 2025.
A retrospective study of non-typhoidal isolation from poultry and pig farms in Nakhon Pathom and Suphan Buri provinces was conducted from 2008 to 2015. The aim of study was to examine the prevalence of antimicrobial resistance and class I integrons related to gene resistance of in livestock and its environment.
A total of 636 isolates was collected from livestock and environmental samples. The isolates included 1.42% Typhimurium, 4.40% , and 1.26% ; however, neither nor were found. All isolates was tested for antimicrobial susceptibility and minimum inhibitory concentrations (CLSI Vet03-S2 2014, NCCLS standard).
The top three drug resistances were to cephalexin, gentamicin, and amoxicillin. Typhimurium showed resistance rates of 100%, 100%, and 22.22% to these antibiotics, respectively; showed resistance rates of 100%, 100%, and 90.91%; and revealed resistance at the rates of 50%, 50%, 12.50%, respectively. The conserved segment integrase 1 and gene cassette were found by polymerase chain reaction (PCR) in all serotypes. The resistance gene of b, I1, (6')-la, (6')-lb, , A, , A1, A10 and A12 were not detected from Typhimurium and fewer resistance genes were detected when compared to the other two subtypes.
These findings could be used to set up the prevention and control strategies for addressing future antimicrobial resistance of , which remains a major food safety concern.
2008年至2015年期间,对佛统府和素攀武里府的家禽养殖场和养猪场进行了非伤寒沙门氏菌分离的回顾性研究。该研究的目的是检测家畜及其环境中与耐药基因相关的抗菌药物耐药性和I类整合子的流行情况。
从家畜和环境样本中总共收集了636株沙门氏菌分离株。这些分离株包括1.42%的鼠伤寒沙门氏菌、4.40%的其他沙门氏菌血清型,以及1.26%的肠炎沙门氏菌;然而,未发现鸡沙门氏菌和猪霍乱沙门氏菌。所有沙门氏菌分离株均进行了抗菌药物敏感性和最低抑菌浓度检测(CLSI Vet03-S2 2014,NCCLS标准)。
耐药率最高的三种药物是头孢氨苄、庆大霉素和阿莫西林。鼠伤寒沙门氏菌对这些抗生素的耐药率分别为100%、100%和22.22%;其他沙门氏菌血清型的耐药率分别为100%、100%和90.91%;肠炎沙门氏菌的耐药率分别为50%、50%、12.50%。通过聚合酶链反应(PCR)在所有血清型中均发现了保守区段整合酶1和基因盒。在鼠伤寒沙门氏菌中未检测到b、I1、(6′)-la、(6′)-lb、dfrA17、aadA1、aadA2、tet(A)、tet(B)、tet(C)、tet(D)、tet(E)、tet(G)、tet(H)、tet(I)、tet(J)、tet(K)、tet(L)、tet(M)、tet(O)、tet(S)、tet(T)、tet(U)、tet(V)、tet(W)、tet(X)、tet(Y)、tet(Z)、erm(A)、erm(B)、erm(C)、erm(F)、erm(G)、erm(H)、erm(I)、erm(J)、erm(K)、erm(L)、erm(M)、erm(N)、erm(O)、erm(P)、erm(Q)、erm(R)、erm(S)、erm(T)、erm(U)、erm(V)、erm(W)、erm(X)、erm(Y)、erm(Z)、msr(A)、mef(A)、mph(A)、mph(B)、mph(C)、mph(D)、mph(E)、mph(F)、mph(G)、mph(H)、mph(I)、mph(J)、mph(K)、mph(L)、mph(M)、mph(N)、mph(O)、mph(P)、mph(Q)、mph(R)、mph(S)、mph(T)、mph(U)、mph(V)、mph(W)、mph(X)、mph(Y)、mph(Z)、cml(A)、cml(B)、cml(C)、cml(D)、cml(E)、cml(F)、cml(G)、cml(H)、cml(I)、cml(J)、cml(K)、cml(L)、cml(M)、cml(N)、cml(O)、cml(P)、cml(Q)、cml(R)、cml(S)、cml(T)、cml(U)、cml(V)、cml(W)、cml(X)、cml(Y)、cml(Z)、sul1、sul2、sul3、dfrA1、dfrA2、dfrA3、dfrA4、dfrA5、dfrA6、dfrA7、dfrA8、dfrA9、dfrA10、dfrA11、dfrA12、dfrA13、dfrA14、dfrA15、dfrA16、dfrA18、dfrA19、dfrA20、dfrA21、dfrA22、dfrA23、dfrA24、dfrA25、dfrA26、dfrA27、dfrA28、dfrA29、dfrA30、dfrA31、dfrA32、dfrA33、dfrA34、dfrA35、dfrA36、dfrA37、dfrA38、dfrA39、dfrA40、dfrA41、dfrA42、dfrA43、dfrA44、dfrA45、dfrA46、dfrA47、dfrA48、dfrA49、dfrA50、dfrA51这些耐药基因,与其他两种亚型相比,在鼠伤寒沙门氏菌中检测到的耐药基因较少。
这些发现可用于制定预防和控制策略,以应对未来沙门氏菌的抗菌药物耐药性问题,这仍然是一个主要的食品安全问题。