Distribution of Cryptosporidium species isolated from diarrhoeic calves in Japan.
C. parvum
Cryptosporidium
Japan
PCR-based sequencing
Phylogenetic analyses
Pre-weaned calves
Journal
Parasitology international
ISSN: 1873-0329
Titre abrégé: Parasitol Int
Pays: Netherlands
ID NLM: 9708549
Informations de publication
Date de publication:
Oct 2020
Oct 2020
Historique:
received:
14
11
2019
revised:
21
02
2020
accepted:
01
06
2020
pubmed:
7
6
2020
medline:
4
3
2021
entrez:
7
6
2020
Statut:
ppublish
Résumé
Cryptosporidium spp. are enteric protozoan parasites that infect a wide range of hosts including humans, and domestic and wild animals. The aim of this study was to molecularly characterize the Cryptosporidium spp. found in calf faeces in Japan. A total of 80 pre-weaned beef and dairy calves' diarrhoeic faecal specimens were collected from nine different prefectures in Japan. A nested polymerase chain reaction targeting the small subunit 18S rRNA and GP60 genes were used to detect the Cryptosporidium genotypes and subtypes. 83.8% (67 out of 80) of the specimens were positive for Cryptosporidium spp.; Cryptosporidium was found in both beef and dairy calves. Cryptosporidium parvum was the predominant species, detected in 77.5% (31/40) of beef calves and 80% (32/40) of dairy calves. Cryptosporidium bovis was also detected, 5.0% (2/40) of dairy calves, and C. ryanae was also found 2.5% (1/40) of dairy calves. One mixed-species infection, 2.5% (1/40) was detected in a beef calf having C. parvum, and C. ryanae. We detected the most common subtype of C. parvum (i.e., IIaA15G2R1), as well as other subtypes (i.e., IIaA14G3R1, IIaA14G2R1, and IIaA13G1R1) that have not previously been detected in calves in Japan. Our results demonstrate the widespread diversity of Cryptosporidium infection in calves in Japan.
Identifiants
pubmed: 32504804
pii: S1383-5769(20)30103-3
doi: 10.1016/j.parint.2020.102153
pii:
doi:
Substances chimiques
DNA, Protozoan
0
RNA, Ribosomal, 18S
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
102153Informations de copyright
Copyright © 2020 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Competing Interest None.