IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
In vitro activity of natural phenolic compounds against fluconazole-resistant Candida species: a quantitative structure activity relationship analysis
Autor/es:
GALLUCCI M.N; CAREZZANO M.E; OLIVA M.M; DEMO M.S; PIZZOLITTO R.P; ZUNINO M.P; ZYGADLO J.A; DAMBOLENA J.S
Revista:
JOURNAL OF APPLIED MICROBIOLOGY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2014 p. 795 - 804
ISSN:
1364-5072
Resumen:
Aims: To evaluate the antifungal activity and to analyse the structure?activity
relationship of eleven natural phenolic compounds against four Candida
species which are resistant to fluconazole.
Methods and Results: Four different species of Candida isolates were used:
Candida albicans, Candida krusei, Candida tropicalis and Candida dubliniensis.
The phenolic compound carvacrol showed the highest anti-Candida bioactivity,
followed by thymol and isoeugenol. The obtained minimum inhibitory
concentration (MIC) values obtained were used in a quantitative structure?
activity relationship (QSAR) analysis where the electronic, steric, thermodynamic
and topological descriptors served as dependent variables. According to the
descriptors obtained in this QSAR study, the antifungal activity of phenols has a first action specific character which is based on their interaction with plasma or mitochondrial membranes. The second action is based on a steric descriptor the maximal and minimal projection of the area?which could explain the inability of some phenolic compounds to be biotransformed to quinones
methylene by Candida species.
Conclusions: According to the descriptors obtained in this QSAR study, the
anti-Candida activity of ortho-substituted phenols is due to more than one
action mechanism. The anti-Candida activity of phenolic compounds can be
predicted by their molecular properties and structural characteristics.
Significance and Impact of the Study: These results could be employed to
predict the anti-Candida activity of new phenolic compounds in the search for
new alternatives or complementary therapies to combat against candidiasis.