Feitosa Thais Ferreira, Vilela Vinícius Longo Ribeiro, Batista Samira Pereira, Silva Samara Santos, Mota Rinaldo Aparecido, Katzer Frank, Bartley Paul M
Department of Veterinary Medicine, Federal Institute of Paraíba - IFPB, Sousa, Paraíba, ZC 58800-970, Brazil.
Postgraduate Program in Science and Animal Health, Federal University of Campina Grande - UFCG, Patos, Paraíba, ZC 58708-110, Brazil.
Curr Res Parasitol Vector Borne Dis. 2023 Dec 9;5:100163. doi: 10.1016/j.crpvbd.2023.100163. eCollection 2024.
This study aimed to genotype isolates of obtained from samples of brain, diaphragm and heart of goats and sheep intended for human consumption in the State of Paraíba, Brazil. Tissue samples from 14 animals, goats ( = 5) and lambs ( = 9), were sourced from public slaughterhouses in seven cities and bio-assayed in mice. The brains of the mice were utilized for DNA extraction. Genotyping was carried out by polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) using 10 markers (SAG1, SAG2, SAG3, BTUB, c22-8, PK1, GRA6, L358, c-29-2 and Apico). A total of 10 isolates were fully genotyped (i.e. at all loci), three from goats and seven from sheep, revealing five distinct genotypes: #13 ( = 4); #48 ( = 3); #57 ( = 1); #273 ( = 1); and one new genotype that had not been previously described. Genotype #13 is frequently found in the Northeast of Brazil and represents a clonal lineage circulating in this region and was the most prevalent genotype identified ( = 4). Moreover, in the present study genotypes #13, #48, #57, and #273 were documented for the first time in sheep from Brazil, and the novel genotype was isolated from a goat. Our findings align with previous studies on from Brazil, where new genotypes are continuously being identified, highlighting a high level of genetic diversity of isolates in the country.
本研究旨在对从巴西帕拉伊巴州供人类食用的山羊和绵羊的脑、横膈膜和心脏样本中获得的分离株进行基因分型。来自7个城市公共屠宰场的14只动物(5只山羊和9只羔羊)的组织样本,在小鼠中进行生物测定。小鼠的脑用于DNA提取。使用10个标记(SAG1、SAG2、SAG3、BTUB、c22-8、PK1、GRA6、L358、c-29-2和Apico)通过聚合酶链反应-限制性片段长度多态性(PCR-RFLP)进行基因分型。总共10个分离株被完全基因分型(即在所有位点),3个来自山羊,7个来自绵羊,揭示了5种不同的基因型:#13(n = 4);#48(n = 3);#57(n = 1);#273(n = 1);以及一种先前未描述的新基因型。基因型#13在巴西东北部经常被发现,代表在该地区循环的一个克隆谱系,是鉴定出的最普遍的基因型(n = 4)。此外,在本研究中,基因型#13、#48、#57和#273首次在巴西绵羊中被记录,新基因型是从一只山羊中分离出来的。我们的研究结果与巴西之前关于[病原体名称未给出]的研究一致,在巴西不断有新的基因型被鉴定出来,突出了该国[病原体名称未给出]分离株的高度遗传多样性。