title: Molecular characterization of Cryptosporidium isolates from human and bovine using 18s rRNA gene in Shahriar county of Tehran, Iran.
abstract: Cryptosporidiosis is a widespread cause of diarrheal diseases of humans, young calves, and many mammals. Although in recent years molecular investigations on Cryptosporidium have increased, no data are available on Iran in this regard. Two species of Cryptosporidium are known to infect human beings; Cryptosporidium hominis which shows anthroponotic transmission among humans and Cryptosporidium parvum which shows zoonotic transmission between animals and humans. Cryptosporidium oocysts, morphologically identified as C. parvum, were isolated from 24 human and 35 bovine cases in Shahriar (suburb of Tehran, Iran), and genotyped by means of a Nested-polymerase chain reaction/restriction fragment length polymorphism analysis of the 18s rRNA gene. The isolates from bovine samples gave zoonotic or 2 genotype (C. parvum), and DNA profiles of human isolates gave two distinct genotypes, namely an anthroponotic or 1 (C. hominis) and zoonotic genotype or 2 (C. parvum).
authors.affiliation: Parasitology Department, School of Medical Science, Tarbiat Modares University, Tehran, Iran.
authors.forename: Majid
authors.initials: M
authors.lastname: Pirestani
authors.forename: Javid
authors.initials: J
authors.lastname: Sadraei
authors.forename: Abdolhossein
authors.initials: A
authors.lastname: Dalimi Asl
authors.forename: Mahdi
authors.initials: M
authors.lastname: Zavvar
authors.forename: Hossein
authors.initials: H
authors.lastname: Vaeznia
mesh_terms: D000293:Adolescent; D000328:Adult; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000469:parasitology; D002648:Child; D002675:Child, Preschool; D003457:Cryptosporidiosis / Q000453:epidemiology* / Q000469:parasitology / Q000662:veterinary; D003458:Cryptosporidium / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D016785:Cryptosporidium parvum / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D016054:DNA, Protozoan / Q000032:analysis; D005243:Feces / Q000469:parasitology; D020459:Genes, rRNA; D005838:Genotype; D006801:Humans; D007223:Infant; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D012337:RNA, Ribosomal, 18S / Q000235:genetics*; D015047:Zoonoses / Q000469:parasitology
chemical_list: D016054:DNA, Protozoan; D012337:RNA, Ribosomal, 18S