Title
Multilocus sequence typing analyses of Clostridium perfringens type A strains harboring tpeL and netB genes
Date Issued
01 April 2017
Access level
metadata only access
Resource Type
journal article
Author(s)
Universidad de São Paulo
Publisher(s)
Academic Press
Abstract
Clostridium perfringens is an anaerobic bacterium ubiquitous in various environments, especially in soil and the gastrointestinal tract of healthy humans and animals. In this study, multilocus sequence typing protocol was used to investigate genotypic relationships among 40 C. perfringens strains isolated from humans and broiler chicken with necrotic enteritis [NE]. The results indicated a few clonal populations, mainly observed in human strains, with 32.5% of all strains associated with one of three clonal complexes and 30 sequences types. The CC-1 cluster showed an interesting and unexpected result because it contained seven strains [six from animals and one of human origin]. Detection assays for toxin genes tpeL and netB were also performed. The netB gene was only observed in 7.5% of the strains from healthy human. The toxin gene tpeL was detected in 22.5% of the C. perfringens strains isolated from three individuals and in six broilers with NE. Our study describes the role of some C. perfringens strains of human origin acting as reservoirs of virulence genes and sources of infection. In addition, the strains of human and animal origin were found to be genetically distinct but phylogenetically close, and the human strains showed more diversity than the animal strains.
Start page
99
End page
105
Volume
44
Language
English
OCDE Knowledge area
Biología celular, Microbiología
Subjects
Scopus EID
2-s2.0-85014175686
PubMed ID
Source
Anaerobe
ISSN of the container
10759964
Sources of information:
Directorio de Producción Científica
Scopus