Antimicrobial and anti-lipase activity of quercetin and its C2-C16 3-O-acyl-esters.
Bioorg Med Chem
; 10(2): 269-72, 2002 Feb.
Article
en En
| MEDLINE
| ID: mdl-11741775
Neither quercetin (Q), nor 3-O-acylquercetines, up to 100 microg/mL, had any significant activity on selected gram-positive strains (Staphylococcus aureus, Bacillus subtilis, Listeria ivanovi, Listeria monocytogenes, Listeria serligeri), gram-negative strains (Escherichia coli, Shigella flexneri, Shigella sonnei, Salmonella enteritidis, Salmonella tiphymurium) and yeasts (Candida albicans and Candida glabrata). In addition, we confirmed the known anti-HIV activity of Q (80% inhibition at 40 microM), which might depend on the free hydroxyl in the C-3 position, as suggested by the lack of activity of the 3-O-acylquercetines. Finally, we described an interesting inhibitory activity on Candida rugosa lipase by Q (IC(16)=10(-4) M) and its esters (3-O-acylquercetines) which, in vivo, could play an important role against lipase producing microorganisms. In particular, 3-O-acyl-quercetines, being more active (IC(16)=10(-4)-10(-6) M) and more lipophilic, could be more effective than Q when applied to the skin or mucosae, and deserve to be studied further.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Quercetina
/
Inhibidores Enzimáticos
/
Lipasa
/
Antiinfecciosos
Límite:
Humans
Idioma:
En
Revista:
Bioorg Med Chem
Asunto de la revista:
BIOQUIMICA
/
QUIMICA
Año:
2002
Tipo del documento:
Article
País de afiliación:
Italia
Pais de publicación:
Reino Unido