Tocols induce high levels of granulocyte-colony-stimulating factor (G-CSF). G-CSF mobilises progenitors that allow mice that have been severely immunocompromised by exposure to acute, high-dose ionising irradiation to recover and to survive. The neutralisation of G-CSF abrogates the radioprotective efficacy of tocols. This article reviews studies in which CD2F1 mice were irradiated with suffici...

In this proposal, the combination of vascular normalization with HIF­1 blockade is sug­ gested as a possible means to radiosensitizing tumors. Research has shown that, after ad­ ministering antiangiogenic agents, there is window of vascular normalization in which tumor hypoxia is alleviated, and tumor radiosensitivity is increased. Recent research also shows that HIF­1 blockade after fractionat...

Background: Different treatment and protective approaches for radiation-induced oral mucositis have been practiced and have varieties of success. Of which, radioprotective agents, synthetic or natural, have been of great interest for researchers. This study aims to evaluate the effect of curcuma longa topical gel as a herbal production on mucositis induced by radiation therapy of head and neck ...

Radiation is an important source of free radicals in living systems. Ionizing radiations such as γ-rays exert their biological effects through generation of reactive oxygen species and the resultant damage to DNA and cellular membranes. Several natural compounds, especially with antioxidant abilities are known to be radioprotective. Baicalein (5,6,7-trihydroxy-2-phenyl-4H-1-benzopyran-4-one), a...

Exposure to radiation can damage endothelial cells in the irradiated area via the production of reactive oxygen species. We synthesized phosphine-borane complexes that reduce disulfide bonds and had previously been shown to interfere with redox-mediated signaling of cell death. We hypothesized that this class of drugs could interfere with the downstream effects of oxidative stress after irradia...

Radiotherapy is a major factor contributing to female infertility by inducing premature ovarian failure (POF). Therefore, the need for an effective radioprotective agent is evident. The present study investigated the mechanism of potential radioprotective effect of sodium selenite on radiation-induced ovarian failure and whether sodium selenite can stimulate in-vivo follicular development in ex...

Radiotherapy is one of the standard cytotoxic therapies for cancer. However, it has a profound impact on ovarian function leading to premature ovarian failure and infertility. Since none of the currently available methods for fertility preservation guarantees future fertility, the need for an effective radioprotective agent is highly intensified. The present study investigated the mechanisms of...

Vojtěch Kamarád was born on August 10, 1949 in Štěpánov. He received his MD from the Faculty of Medicine, Palacký University in Olomouc in 1973. Then he took a position at the Department of Histology and Embryology where he later became associate professor (1982). In 1995 Dr. Kamarád decided to leave academia and became a product specialist for pharmaceutical company Schering-Plough. Three year...