Detection of Methicillin-Resistant Staphylococcus aureus among Foodborne Pathogenic Strains and Assessment of Their Adhesion Ability and Cytotoxic Effects in HCT-116 Cells.
Abderrahmen MerghniHiba HamdiMarwa Ben AbdallahZaki M Al-HasawiDiana A Al-QuwaieSalwa Abid-EssefiPublished in: Foods (Basel, Switzerland) (2023)
Staphylococcus aureus is one of the high-threat pathogens equipped with a repertoire of virulence factors making it responsible for many infections in humans, including foodborne diseases. The present study aims to characterize antibiotic resistance and virulence factors in foodborne S. aureus isolates, and to investigate their cytotoxic effects in human intestinal cells (HCT-116). Our results revealed methicillin resistance phenotypes (MRSA) along with the detection of mec A gene (20%) among tested foodborne S. aureus strains. Furthermore, 40% of tested isolates showed a strong ability for adhesion and biofilm formation. A high rate of exoenzymes production by tested bacteria was also registered. Additionally, treatment with S. aureus extracts leads to a significant decrease in HCT-116 cell viability, accompanied by a reduction in the mitochondrial membrane potential (MMP), as a result of reactive oxygen species (ROS) generation. Thereby, S. aureus food poisoning remains daunting and needs particular concern to prevent foodborne illness.
Keyphrases
- staphylococcus aureus
- biofilm formation
- methicillin resistant staphylococcus aureus
- cell cycle arrest
- cell death
- induced apoptosis
- escherichia coli
- reactive oxygen species
- pseudomonas aeruginosa
- pi k akt
- oxidative stress
- candida albicans
- cystic fibrosis
- label free
- signaling pathway
- dna methylation
- cell proliferation
- real time pcr
- single cell
- gram negative
- induced pluripotent stem cells
- multidrug resistant
- combination therapy
- high throughput sequencing