Effectiveness of online trainings on radiation protection in the context of the COVID-19 pandemic.

Over 212 healthcare professionals from the country have used the online trainings on radiation protection conducted during the COVID-19 pandemic. Each training, lasting up to 10 working days, is accompanied by mandatory Google Form-based questionnaires, which includes topic key questions about each lecture as well as pre- and post-training tests and provided to participants. In addition, the ability to conduct a dialogue with patients about radiation risks, group discussions, as well as a special module for radiation protection officers were assessed online.

The curcumin analog HO-3867 selectively kills cancer cells by converting mutant p53 protein to transcriptionally active wildtype p53.

p53 is an important tumor-suppressor protein that is mutated in more than 50% of cancers. Strategies for restoring normal p53 function are complicated by the oncogenic properties of mutant p53 and have not met with clinical success. To counteract mutant p53 activity, a variety of drugs with the potential to reconvert mutant p53 to an active wildtype form have been developed.

[Effect of ascorbic acid (vitamin C) on the EPR spectra from the black and red hair].

The EPR spectra of melanin's free radicals in natural black and red hair have been investigated. It is show that the EPR spectrum of black hair is slightly asymmetric singlet with g=2,0035 and ΔH=0,5 mTl. The EPR spectrum of red hair with g=2,0053 differs from the spectrum of black hair.