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Veterinary parasitology2016; 233; 48-51; doi: 10.1016/j.vetpar.2016.11.021

First description of Cryptosporidium hominis GP60 genotype IkA20G1 and Cryptosporidium parvum GP60 genotypes IIaA18G3R1 and IIaA15G2R1 in foals in Brazil.

Abstract: The present study focuses on Cryptosporidium infections of foals in Brazil. A total of 92 animals of different breeds from 11 farms in the vicinity of Araçatuba in the state of São Paulo, were examined. According to PCR targeting the 18S rRNA gene, Cryptosporidium sp. DNA was detected in 21.7% (20/92) of foals. Good quality 18S rRNA, actin, HSP70 and gp60 genes nPCR amplicons were obtained from five fecal samples. PCR amplification and sequencing of a fragment of the GP60 sporozoite surface glycoprotein gene revealed C. parvum genotypes IIaA18G3R1, IIaA15G2R1. Interestingly, we also detected in two foals a GP60 genotype related to the human parasite C. hominis.
Publication Date: 2016-12-02 PubMed ID: 28043388DOI: 10.1016/j.vetpar.2016.11.021Google Scholar: Lookup
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  • Journal Article

Summary

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This research investigates Cryptosporidium infections in foals in Brazil, reporting the first instances of specific Cryptosporidium genotypes. Three different genotypes were identified: one related to the human parasite Cryptosporidium hominis, and two to Cryptosporidium parvum.

Research Context

  • The study took place at 11 farms around Araçatuba in the state of São Paulo, Brazil.
  • It examined 92 foals of various breeds to establish the extent of Cryptosporidium infections.

Methodology

  • A PCR (Polymerase Chain Reaction) analysis was conducted, specifically targeting the 18S rRNA gene, to detect any presence of Cryptosporidium DNA
  • From the 92 foals, 20 tested positive for Cryptosporidium, which suggests a relatively high infection rate of around 21.7%.
  • A high-quality nPCR (nested PCR) amplification was achieved for the actin, HSP70, gp60, and further 18S rRNA genes from five of the Cryptosporidium-positive fecal samples.

Findings

  • Upon sequencing a fragment of the GP60 gene—which codes for a protein on the surface of Cryptosporidium’s infectious stage called the sporozoite—the researchers discovered three genotypes:
    • One was related to Cryptosporidium hominis, a type of Cryptosporidium more commonly found infecting humans.
    • The other two genotypes identified were related to Cryptosporidium parvum, a species well-known for causing infection in a range of animals, including humans.
  • This is the first time these specific Cryptosporidium genotypes have been identified in foals in Brazil, highlighting new insight into the epidemiology of Cryptosporidium infections.

Significance

  • This detection of the Cryptosporidium hominis genotype in foals may suggest the potential for interspecies transmission, which could have important public health implications.

Cite This Article

APA
Inácio SV, Widmer G, de Brito RL, Zucatto AS, de Aquino MC, Oliveira BC, Nakamura AA, Neto LD, Carvalho JG, Gomes JF, Meireles MV, Bresciani KD. (2016). First description of Cryptosporidium hominis GP60 genotype IkA20G1 and Cryptosporidium parvum GP60 genotypes IIaA18G3R1 and IIaA15G2R1 in foals in Brazil. Vet Parasitol, 233, 48-51. https://doi.org/10.1016/j.vetpar.2016.11.021

Publication

ISSN: 1873-2550
NlmUniqueID: 7602745
Country: Netherlands
Language: English
Volume: 233
Pages: 48-51
PII: S0304-4017(16)30501-5

Researcher Affiliations

Inácio, Sandra Valéria
  • Universidade Estadual Paulista (UNESP), Faculdade de Medicina Veterinária, Araçatuba, Departamento de Apoio, Produção e Saúde Animal, Araçatuba, São Paulo, Brazil. Electronic address: sandra_byol@yahoo.com.br.
Widmer, Giovanni
  • Department of Infectious Disease & Global Health, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA, USA. Electronic address: giovanni.widmer@tufts.edu.
de Brito, Roberta Lomonte Lemos
  • Universidade Estadual Paulista (UNESP), de Ciências Agrárias e Veterinárias, Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Jaboticabal, São Paulo, Brazil. Electronic address: rolomonte@gmail.com.
Zucatto, Anaiza Simão
  • Universidade Estadual Paulista (UNESP), Faculdade de Medicina Veterinária, Araçatuba, Departamento de Apoio, Produção e Saúde Animal, Araçatuba, São Paulo, Brazil. Electronic address: anaszucatto@hotmail.com.
de Aquino, Monally Conceição Costa
  • Universidade Estadual Paulista (UNESP), Faculdade de Medicina Veterinária, Araçatuba, Departamento de Apoio, Produção e Saúde Animal, Araçatuba, São Paulo, Brazil. Electronic address: monallyaquino@hotmail.com.
Oliveira, Bruno César Miranda
  • Universidade Estadual Paulista (UNESP), Faculdade de Medicina Veterinária, Araçatuba, Departamento de Apoio, Produção e Saúde Animal, Araçatuba, São Paulo, Brazil. Electronic address: bruno.9988@hotmail.com.
Nakamura, Alex Akira
  • Universidade Estadual Paulista (UNESP), Faculdade de Medicina Veterinária, Araçatuba, Departamento de Clínica, Cirurgia e Reprodução Animal, Araçatuba, São Paulo, Brazil. Electronic address: akiravt@gmail.com.
Neto, Luiz da Silveira
  • Universidade Estadual Paulista (UNESP), de Ciências Agrárias e Veterinárias, Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Jaboticabal, São Paulo, Brazil. Electronic address: luiz.silveira@gmail.com.
Carvalho, João Gabriel Balizardo
  • Universidade Estadual Paulista (UNESP), Faculdade de Medicina Veterinária, Araçatuba, São Paulo, Brazil. Electronic address: jgbcarvalho@uol.com.br.
Gomes, Jancarlo Ferreira
  • Universidade Estadual de Campinas (Unicamp), Institutos de Biologia e Computação, Campinas, São Paulo, Brazil. Electronic address: jgomes@ic.unicamp.br.
Meireles, Marcelo Vasconcelos
  • Universidade Estadual Paulista (UNESP), Faculdade de Medicina Veterinária, Araçatuba, Departamento de Clínica, Cirurgia e Reprodução Animal, Araçatuba, São Paulo, Brazil. Electronic address: marcelo@fmva.unesp.br.
Bresciani, Katia Denise Saraiva
  • Universidade Estadual Paulista (UNESP), Faculdade de Medicina Veterinária, Araçatuba, Departamento de Apoio, Produção e Saúde Animal, Araçatuba, São Paulo, Brazil. Electronic address: bresciani@fmva.unesp.br.

MeSH Terms

  • Animals
  • Brazil
  • Cryptosporidiosis / parasitology
  • Cryptosporidium / genetics
  • Cryptosporidium parvum / genetics
  • DNA, Protozoan / genetics
  • Genotype
  • HSP70 Heat-Shock Proteins / genetics
  • Horses
  • RNA, Ribosomal, 18S / genetics

Citations

This article has been cited 12 times.
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