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In vitro studies assess the optimal concentration of propolis as a radioprotector
Date:7/6/2012

A team of researchers from the Technical University of Valencia, the University Hospital La Fe, the University of Valencia and the Universitat Autnoma de Barcelona conducted in vitro studies of cytotoxicity (cellular affection) to assess the optimal concentration level of propolis in which this natural substance extracted from bee resin would offer the maximum protection against ionised radiation and not be toxic for blood cells.

According to the results of the research, this optimal concentration level is between 120-500 micrograms/mL. "Within this range can be found maximum protection against radiation-induced damage and the substance does not reveal neither a cytotoxicity nor a genotoxicity effect on non-irradiated human lymphocytes", says Alegria Montoro, head of the Laboratory of Biological Dosimetry at the University Hospital La Fe and lecturer of the Master in Radiological Protection in Radioactive and Nuclear Facilities offered by the UPV.

The conclusions of this study, which receives funding from the Spanish Nuclear Security Council (CSN), represent a starting point for future clinical applications using propolis. The results were published in the journal Food and Chemical Toxicology; in August a full revision of the study will be presented at the Annual International Conference of the IEEE Engineering in Medicine and Biology Society EMBC12, which will be held in San Diego, California.

In the study, the team of researchers used four genetic biomarkers, including the mytotic index and the cell proliferation kinetics, with the aim of determining whether propolis has cytotoxic effects on cells. "Using these biomarkers makes it possible to discover how a substance affects cell division: a substance which is cytotoxic and modifies the cell division stage would do so by accelerating, slowing down or even stopping the process, and all three effects are negative", explains Alegria Montoro.

The other two biomarkers
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Contact: Francesc Barquinero
Francesc.Barquinero@uab.es
33-015-835-9547
Universitat Autonoma de Barcelona
Source:Eurekalert

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