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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Intrahost Diversity of Feline Coronavirus: A Consensus between the Circulating Virulent/Avirulent Strains and the Internal Mutation Hypotheses?

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Author(s):
Hora, Aline S. [1, 2] ; Asano, Karen M. [1, 2] ; Guerra, Juliana M. [3] ; Mesquita, Ramon G. [3] ; Maiorka, Paulo [3] ; Richtzenhain, Leonardo J. [1, 2] ; Brandao, Paulo E. [1, 2]
Total Authors: 7
Affiliation:
[1] Univ Sao Paulo, Coll Vet Med, Dept Prevent Vet Med & Anim Hlth, BR-05508270 Sao Paulo - Brazil
[2] Univ Sao Paulo, Coll Vet Med, Coronavirus Res Grp, BR-05508270 Sao Paulo - Brazil
[3] Univ Sao Paulo, Coll Vet Med, Dept Pathol, BR-05508270 Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: SCIENTIFIC WORLD JOURNAL; 2013.
Web of Science Citations: 4
Abstract

To evaluate the most controversial issue concerning current feline coronavirus (FCoV) virology, the coexisting hypotheses of the intrahost and interhost origins of feline infectious peritonitis virus (FIPV) in regard to the pathogenesis of feline infectious peritonitis (FIP), this study aimed to assess the molecular diversity of the membrane gene FCoVs in 190 samples from 10 cats with signs of FIP and in 5 faecal samples from cats without signs of FIP. All samples from the non-FIP cats and 25.26% of the samples from the FIP cats were positive for the FCoV membrane (M) gene. Mutations in this gene consisted of SNP changes randomly scattered among the sequences; few mutations resulted in amino acid changes. No geographic pattern was observed. Of the cats without FIP that harboured FECoV, the amino acid sequence identities for the M gene were 100% among cats (Cats 1-3) from the same cattery, and the overall sequence identity for the M gene was >= 91%. In one cat, two different lineages of FCoV, one enteric and one systemic, were found that segregated apart in the M gene tree. In conclusion, the in vivo mutation transition hypothesis and the circulating high virulent-low virulent FCoV hypothesis have been found to be plausible according to the results obtained from sequencing the M gene. (AU)

FAPESP's process: 10/07492-8 - Feline coronavirus: occurrence, viral load and genetic diversity in cats from catteries from São Paulo and Rio de Janeiro, Brazil
Grantee:Paulo Eduardo Brandão
Support Opportunities: Regular Research Grants
FAPESP's process: 09/17535-9 - Feline coronavirus: occurence, vira load ando genetic diversity in cats from catteries from São Paulo and Rio de Janeiro, Brazil
Grantee:Aline Santana da Hora
Support Opportunities: Scholarships in Brazil - Doctorate