The aim of this study was to evaluate the radioprotective and reparative effects of compounds based on aloe vera, zinc, and copper against salivary gland dysfunction in Wistar rats. A total of 150 Wistar rats were randomly divided into 12 groups, in which the animals received aloe vera and/or zinc and copper. In eight of these groups the animals were also subjected to irradiation before or afte...

The study was aimed at the experimental assessment of the efficacy of heparin as radioprotector in condition of acute whole body γ-ray irradiation. The efficacy of the product was based on the 30-day survival rate and average life expectancy of dead irradiated animals. To reveal possible mechanisms of radioprotective effects of heparin the thymus mass, the number of leukocytes and colony format...

Radiation therapy (RT) evolved to be a primary treatment modality for cancer patients. Unfortunately, the cure or relief of symptoms is still accompanied by radiation-induced side effects with severe acute and late pathophysiological consequences. Inhibitors of cyclooxygenase-2 (COX-2) are potentially useful in this regard because radioprotection of normal tissue and/or radiosensitizing effects...

The development of radioprotective agents has been a subject of intense research in view of their potential for use within a radiation environment, such as space exploration, radiotherapy and even nuclear war. Since no ideal, safe synthetic radioprotectors are available to date, the search for alternative sources, including plants, has been on-going for several decades. In the Traditional India...

An attempt made to construct a model of relationship of the radioprotective and carcinogenic properties of biologically active compounds with their electron and information factors. We discovered a simple quantitative structure – activity relationships between the radioprotective effectiveness of chemicals and their molecular structure. It is established that carcinogenic properties of chemical...

Singleand double-stranded (RF) DNA of page <?X-174 were 60Co-gamma irradiated. Depen­ dence of radiosensitivity on the concentration of cysteamine and cystamine was measured. Radio­ resistance of DNA in vivo (phage particles) as well as of DNA in vitro (infectious DNA) increase between 10-4 and 10—1 M of superprotective agents. The same relationship is observed when the DNA is in the dry and in...

We examined the radioprotective effect of aminothiol 2-N-propylamine-cyclo-hexanethiol (20-PRA) on a human leukemic cell line (K562) following various radiation doses (5, 7.5 and 20 Gy) using a source of 60Co gamma-rays. At 5 Gy and 1 nM 20-PRA, a substantial protective effect (58%) was seen 24 h after irradiation, followed by a decrease at 48 h (11%). At the high radiation dose (20 Gy) a low p...