Coagulase-negative Staphylococcus: analyze of the resistance profile and enterotoxigenic in strains isolated from dairy products

• Grant number: 18/00986-7
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: May 01, 2018
• End date: March 19, 2019
• Field of knowledge: Agronomical Sciences - Food Science and Technology - Food Science
• Principal Investigator: Nathalia Cristina Cirone Silva
• Grantee: Luiz Gustavo de Matos
• Host Institution: Faculdade de Engenharia de Alimentos (FEA). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

Staphylococcus sp are divided into two groups, according to the ability to produce coagulase, which can be either positive or negative. Both groups are known by their capacity to produce enterotoxins that are responsible for most food poisoning cases in humans. In Brazil, S. aureus are among the three main disease-causing agents transmitted by food. However, it has been noticed in Coagulase-Negative Staphylococcus (CoNS) a great potential to produce enterotoxins. In addition to the production of enterotoxins, some species of CoNS are resistant to many types of antibiotics, being able to transfer their resistance genes to others microorganisms, what turns the topic into a Public Health Problem. The project has as objective to identify and to characterize CoNS, previously isolated from dairies in São Paulo State. Eighty-five strains isolated from Minas Frescal cheese production chain will be used. The project aims to identify species of CoNS by sequencing the gene sodA and BLAST analyze. The strains identified will be submitted to a detection of genes which are responsible for classical enterotoxins production, and the meticillin-resistant genes (mecA and mecC). In addition, the resistance profile to antibiotics (penicillin, oxacillin, cefoxitin, gentamicin, trobamycin, tetracycline, clindamycin, chloramphenicol) will be performed. (AU)

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)

DA SILVA ABREU, ANDERSON CLAYTON; MATOS, LUIZ GUSTAVO; DA SILVA CANDIDO, TALITA JUNIA; BARBOZA, GIOVANA RUEDA; MARTINS ALENCAR DE SOUZA, VICTORIA VILACA; MUNIVE NUNEZ, KAREN VANESSA; CIRONE SILVA, NATHALIA CRISTINA. Antimicrobial resistance of Staphylococcus spp. isolated from organic and conventional Minas Frescal cheese producers in Sao Paulo, Brazil. JOURNAL OF DAIRY SCIENCE, v. 104, n. 4, p. 4012-4022, APR 2021. (16/02118-7, 18/00986-7)

DA SILVA ABREU, ANDERSON CLAYTON; CARAZZOLLE, MARCELO FALSARELLA; CRIPPA, BRUNA LOURENCO; BARBOZA, GIOVANA RUEDA; RALL, VERA LUCIA MORES; ROCHA, LILIANA DE OLIVEIRA; CIRONE SILVA, NATHALIA CRISTINA. Bacterial diversity in organic and conventional Minas Frescal cheese production using targeted 16S rRNA sequencing. INTERNATIONAL DAIRY JOURNAL, v. 122, NOV 2021. (16/02118-7, 18/00986-7)

ABREU, ANDERSON CLAYTON DA SILVA; CRIPPA, BRUNA LOURENCO; SOUZA, VICTORIA VILACA MARTINS ALENCAR DE; NUNEZ, KAREN VANESSA MUNIVE; ALMEIDA, JAQUELINE MILAGRES DE; RODRIGUES, MARJORY XAVIER; CIRONE SILVA, NATHALIA CRISTINA. Assessment of sanitiser efficacy against Staphylococcus spp. isolated from Minas Frescal cheese producers in Sao Paulo, Brazil. INTERNATIONAL DAIRY JOURNAL, v. 123, DEC 2021. (16/02118-7, 18/00986-7)