Methyl gallate from Camellia nitidissima Chi flowers reduces quorum sensing related virulence and biofilm formation against Aeromonas hydrophila .
Huan JiangZhennan WangAi-Qun JiaPublished in: Biofouling (2024)
Aeromonas hydrophila , a Gram-negative zoonotic bacterium, causes high mortality in fish farming and immunocompromised patients. This study aimed to extract methyl gallate (MG) from the flowers of Camellia nitidissima Chi and evaluate its potential as a quorum sensing inhibitor (QSI) against Aeromonas hydrophila SHAe 115. MG reduced QS-associated virulence factors, including hemolysis, protease, and lipase, while impairing swimming motility and biofilm formation. Additionally, MG down-regulated positive regulatory genes ( ahyR , fleQ ) and up-regulated negative regulators ( litR , fleN ). This highlights MG's promise as a potent QSI for A. hydrophila SHAe 115, advancing strategies against infections in aquaculture and human health.
Keyphrases
- biofilm formation
- pseudomonas aeruginosa
- staphylococcus aureus
- candida albicans
- gram negative
- human health
- escherichia coli
- transcription factor
- end stage renal disease
- multidrug resistant
- risk assessment
- chronic kidney disease
- cystic fibrosis
- newly diagnosed
- ejection fraction
- climate change
- oxidative stress
- prognostic factors
- cardiovascular disease
- genome wide
- gene expression
- dna methylation
- extracorporeal membrane oxygenation
- patient reported outcomes
- patient reported