Impact of Mt. Olympus Honeys on Virulence Factors Implicated in Pathogenesis Exerted by Pseudomonas aeruginosa

The aim of this study was to examine the impact of twenty honey samples, harvested in Mt. Olympus (Greece), on the virulence factors implicated in pathogenesis. Six key virulence factors (protease and elastase activity, pyocyanin and pyoverdine concentration, biofilm formation, and swimming motility...

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Published in:Antibiotics (Basel) 2023-06, Vol.12 (6), p.998
Main Authors: Tsavea, Eleni, Tzika, Paraskevi, Katsivelou, Eleni, Adamopoulou, Anna, Nikolaidis, Marios, Amoutzias, Grigorios D, Mossialos, Dimitris
Format: Article
Language:English
Subjects:
Antibiotic resistance
Antibiotics
Antimicrobial activity
Biofilms
Biosynthesis
Chemical bonds
Drug resistance
Elastase
Enzymes
Flavonoids
Honey
honey bee products
Motility
Mt. Olympus
Nosocomial infection
Nosocomial infections
Pathogenesis
Pathogens
Peptides
Polyphenols
Protease
Proteinase
Proteins
Pseudomonas aeruginosa
Pyocyanin
pyoverdine
Pyoverdines
Swimming
Virulence
Virulence factors
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Summary:The aim of this study was to examine the impact of twenty honey samples, harvested in Mt. Olympus (Greece), on the virulence factors implicated in pathogenesis. Six key virulence factors (protease and elastase activity, pyocyanin and pyoverdine concentration, biofilm formation, and swimming motility) were selected in order to assess the effect of the tested honeys compared with Manuka honey. All tested honeys demonstrated a significant inhibition of protease and elastase activity compared with the control. Six and thirteen honeys exerted superior protease (no inhibition zone) and elastase (values lower than 55%) activity, respectively, compared with Manuka honey. Seventeen tested honeys exhibited reduced pyoverdine production compared with the control; all tested honeys, except for one, showed an inhibitory effect on pyocyanin production compared with the control. Regarding swimming motility, nine tested honeys demonstrated significantly higher inhibition compared with Manuka honey. Honey concentrations (6% and 8% / ) had the most profound impact, as they reduced biofilm formation to less than 20% compared with the control. Overall, our data demonstrate a significant inhibition of the virulence factors in the tested Mt. Olympus honeys, highlighting the strong antimicrobial activity against an antibiotic-resistant pathogen of growing concern, which is implicated in severe nosocomial infections globally.
ISSN:2079-6382
2079-6382
DOI:10.3390/antibiotics12060998