Monday, February 20, 2012

Propolis Found to Inhibit Candida Albicans

The antifungal protection of Propolis is due to its rich, diverse flavonoid content and it's proven control of Candida Albicans has been validated in studies worldwide...

Structural and Genetic Alterations of Fungal Cells Caused by Mexican Propolis

In order to study the antifungal activity of propolis ethanol extracts (PEE) from Apis mellifera bees from Mexico we used optical microscopy and we were able to see that PEE induced inhibition of germ tube formation of C. albicans.

Ultrastructural findings were seen using transmission electron micrographs of ultrathin sections of Candida albicans revealed that these cells suffered vacuolization, increased formation of storage granules as well as alteration and disruption of the outer structures of yeast, with release of intracellular material. In order to describe the molecular mechanism of action, we evaluate gene expression...

We were able to identify some over- and under-expressed genes. ADH1 y PIK1 genes were under-expressed in a manner dependent on concentration and exposure time. On the other hand, our team has determined the chemical profile of several Mexican propolis, with interesting results as the diversity of content and different levels of antifungal and antibacterial activities

Although many studies have focused on demonstrating the antifungal activity of propolis and different extracts, few have shown their effects on the morphology and structure of fungi. We have found important cell damage caused by contact with extracts using bright field optical microscopy studies as well as the fluorescent dye White Calcofluor and transmission electron microscopy...

Based on the above results, it can be stated that propolis from the States of Guanajuato and Queretaro showed a higher number of compounds with longer retention time (higher polarity), which was corroborated by the MS study, in which it was found that these compounds were of the flavonoid-type, mainly pinocembrin, naringenin and chrysin, compounds characteristic of plant specimens visited by bees in that geographic locality...

In summary, we succeeded in establishing the chemical content of propolis, with a significant presence of flavonoid type compounds, a prerequisite for such high activity. Similarly, we must remember that the characteristic flora of each region determines the type of propolis bees collect in that locality, and this accounted for the differences in the antimicrobial activity which we found in this study.


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