title: Molecular characterization of a new genotype of Cryptosporidium from American minks (Mustela vison) in China.
abstract: A total of 469 fecal samples were collected from American minks (Mustela vison) on a farm in Hebei Province in China and examined for Cryptosporidium by Sheather's sugar flotation technique and 8 Cryptosporidim isolates were obtained. The partial 18S rRNA, 70kDa heat shock protein (HSP70), Cryptosporidium oocyst wall protein (COWP) and actin genes of six isolates were sequenced. Sequence data were analyzed together with known Cryptosporidium spp. and genotypes. Results of this multi-locus genetic characterization indicated that the six Cryptosporidium isolates in this study shared the same sequences of the genes studied and were different from known Cryptosporidium species and genotypes. The closest relative was Cryptosporidium ferret genotype with 7, 22, 2 and 2 nucleotide differences in the 18S rRNA, HSP70, COWP and actin genes, respectively. The homology to ferret genotype at the 18S rRNA locus was 99.1%, which is comparable to that between C. parvum and C. hominis (99.2%), or between C. muris and C. andersoni (99.4%). Therefore, the Cryptosporidium in minks in this study is considered a new genotype, the Cryptosporidium mink genotype.
authors.affiliation: The College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, PR China.
authors.forename: Rongjun
authors.initials: R
authors.lastname: Wang
authors.forename: Longxian
authors.initials: L
authors.lastname: Zhang
authors.forename: Yaoyu
authors.initials: Y
authors.lastname: Feng
authors.forename: Changshen
authors.initials: C
authors.lastname: Ning
authors.forename: Fuchun
authors.initials: F
authors.lastname: Jian
authors.forename: Lihua
authors.initials: L
authors.lastname: Xiao
authors.forename: Jinfeng
authors.initials: J
authors.lastname: Zhao
authors.forename: Yongli
authors.initials: Y
authors.lastname: Wang
mesh_terms: D000818:Animals; D001483:Base Sequence; D002681:China / Q000453:epidemiology; D003457:Cryptosporidiosis / Q000469:parasitology / Q000662:veterinary*; D003458:Cryptosporidium / Q000145:classification / Q000235:genetics*; D005243:Feces / Q000469:parasitology; D005838:Genotype; D018840:HSP70 Heat-Shock Proteins / Q000235:genetics; D008907:Mink / Q000469:parasitology*; D010802:Phylogeny; D015800:Protozoan Proteins / Q000235:genetics
chemical_list: D018840:HSP70 Heat-Shock Proteins; D015800:Protozoan Proteins