Clonal diversity and molecular characterization of Staphylococcus aureus isolated from milk of cows with subclinical mastitis in the state of Sao Paulo.

• Grant number: 13/18338-8
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: December 01, 2013
• End date: July 16, 2017
• Field of knowledge: Biological Sciences - Microbiology
• Principal Investigator: Vera Lúcia Mores Rall
• Grantee: Erika Carolina Romão Bonsaglia
• Host Institution: Instituto de Biociências (IBB). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil
• Associated scholarship(s): 15/15208-1 - Evaluation of selective dry cow therapy for prevention and treatment of mastitis and milk microbiome in Holstein dairy cows, BE.EP.DR

Abstract

Staphylococcus aureus is the common agent of bovine mastitis, causing huge economic losses in Brazilian cattle. This micro-organism virulence factors have been well known as the production of hemolysin, and leucotoxinas toxin superantigens such as toxic shock syndrome and enterotoxins. The objective of the study is to characterize molecularly isolates of S. aureus from milk of cows with subclinical mastitis in various regions of the state of São Paulo, by MLST, spatyping, agr and clonal complex. Also tests will be performed phenotypic and genotypic antimicrobial resistance (including the SCCmec), and genetic research of some virulence factors such as Panton Valentine toxin, toxic shock syndrome and classical enterotoxins and sec, seh, sei, (only enterotoxin that so far demonstrated emetic activity) in order to verify which virulence factors involved in these framework.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BONSAGLIA, E. C. R.; SILVA, N. C. C.; RUSSI, B. F.; CAMARGO, C. H.; DANTAS, S. T. A.; LANGONI, H.; GUIMARAES, F. F.; LIMA, F. S.; FITZGERALD, J. R.; FERNANDES JUNIOR, A.; et al. Molecular epidemiology of methicillin-susceptible Staphylococcus aureus (MSSA) isolated from milk of cows with subclinical mastitis. Microbial Pathogenesis, v. 124, p. 130-135, NOV 2018. (13/12831-4, 13/18338-8)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

BONSAGLIA, Erika Carolina Romão. Molecular characterization and clonal diversity of Staphylococcus aureus isolated from milk of cows with subclinical mastitis in Sao Paulo State. 2017. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Instituto de Biociências. Botucatu Botucatu.