Breast cancer (BC) is the leading cause of morbidity and mortality malignant neoplasms in women worldwide. In spite a large number studies devoted to etiopathogenesis this group tumors, many questions concerning specific mechanisms their origin development are still unresearched. Based on numerous recent years, addition traditional risk factors (such as hereditary factors, hormonal disorders, e...

The potentially life-threatening effects of total body ionizing radiation exposure have been known for more than a century. Despite considerable advances in our understanding of the effects of radiation over the past six decades, efforts to identify effective radiation countermeasures for use in case of a radiological/nuclear emergency have been largely unsuccessful. Vitamin E is known to have ...

Increasing use of nuclear radiation for human welfare necessitates a new, safe and cost effective radioprotector not only for personnels charged with responsibility of testing or working with radiations in laboratories, but also for the general public. Keeping this in view, the study has been undertaken to find out the possible radioprotective potential of the Grewia asiatica fruit extract (GAE...

Ionizing radiation causes DNA damage and consequent apoptosis, mainly due to the production of hydroxyl radicals (HO•) that follows radiolytic splitting of water. However, superoxide (O2•-) and H2O2 also form and induce oxidative stress with resulting LMP (lysosomal membrane permeabilization) arising from iron-catalysed oxidative events. The latter will contribute significantly to radiation-ind...

Bone marrow and intestinal damage limits the efficacy of radiotherapy for cancer and can result in death if the whole body is exposed to too high a dose, as might be the case in a nuclear accident or terrorist incident. Identification of an effective nontoxic biological radioprotector is therefore a matter of some urgency. In this study, we show that an orally administered hot-water extract fro...

Exposure to ionizing radiation causes cellular damage, which can lead to premature cell death or accumulation of somatic mutations, resulting in malignancy. The damage is mediated in part by free radicals, particularly reactive oxygen species. Fermented papaya preparation (FPP), a product of yeast fermentation of Carica papaya Linn, has been shown to act as an antioxidant. In this study, we inv...

Polysaccharides from aloe are always considered an effective radioprotector on irradiation-induced skin damage. The aim of this study was to determine if aloe polysaccharides (AP) have radioprotective effects on normal human cells in vitro and mouse survival in vivo and to explore the mechanism. Pretreatment with 50 microg/ml AP could improve the surviving fraction at 2 Gy (SF2) of three normal...

The aim of this study was to evaluate the radioprotector effect of sodium selenite on the ultrastructure of submandibular glands in rats. Fifty-seven male albino Wistar rats were randomized to 4 groups: control, irradiated, sodium selenite and irradiated/sodium selenite. The animals in the sodium selenite and irradiated/sodium selenite groups received intraperitoneal injections of sodium seleni...

Sulfur mustard is well known as toxic Chemical warfare agent and on contact with skin it produces blisters as well as systemic toxicity. In this study we have evaluated the efficacy of few analogues of S-2(2-amino-ethylamino) ethyl phenyls sulphide (DRDE-07) and a known radioprotector amifostine against SM induced toxicity in mouse. We have selected seven newly synthesized analogues of DRDE-07 ...