background: radiotherapy is the main modality of cancer treatment. there are many chemical radioprotectors which unfortunately have lethal or toxic effect. therefore the search is on to find out natural plant based radioprotectors. a well known medicinal plant,which is more acceptable to the body, tinospora cordifolia, was tested in animal tissues against gamma radiations. radioprotective effec...

background: alpinia galanga l. belonging to the family zingiberaceae is widely grown in the state of kerala, india. they are effective antioxidant and free radical scavenger under both in vitro and in vivo condition. the efficacy of the isolated flavonoids in conferring protection from radiation induced damages to genomic dna was studied. materials and methods: the bioflavonoids, galangin and k...

background: the radioprotective effect of grewia asiatica fruit (gae) which contains anthocyanin type cyanidin 3- glucoside, vitamin c, a, minerals, carotenes and dietary fibers etc was studied. materials and methods: for study swiss albino mice were divided into five groups-1. control (vehicle treated) 2. gae treated (700 mg / kg. b.wt / day for fifteen days), 3. irradiated (5 gy), 4. gae + ir...

The radioprotective ability of L-tryptophan, tryptamine, 3-indoleacetic and indole (10~4 m), on UV and gamma irradiated DNA (10-4 m) is studied. UV radioprotection is accomplished in the following order of efficiency: L-Tryptophan and 3-indoleacetic acid > indole and tryptamine. The corresponding DRF measured as absorbancy loss at 260 nm, were: L-Tryptophan and 3-indoleacetic acid around 3 and ...

background: dna damage is one of the major consequences of radiation exposure onto the biological systems. a series of compounds including flavanoids were found to render dna protection against radiation damage. in this study we elucidated the potential of rutin and rutin hydrate to protect plasmid dna against damage induced by irradiation. materials and methods: dpph and hydroxyl radical scave...

BACKGROUND Artemis has a defined role in V(D)J recombination and has been implicated in the repair of radiation induced double-strand breaks. However the exact function(s) of Artemis in DNA repair and its preferred substrate(s) in vivo remain undefined. Our previous work suggests that Artemis is important for the repair of complex DNA damage like that inflicted by high Linear Energy Transfer (L...

background: a radioprotective effect of amifostine as well as its ability to modulate the level of spontaneous and gamma-irradiation-induced genetic changes on human peripheral blood lymphocytes has been investigated . amifostine, known as a potent radical scavenger, has been introduced as the most effective radioprotector, yet it is not completely approved for the clinical use. however, furthe...

  Background: A radioprotective effect of amifostine as well as its ability to modulate the level of spontaneous and gamma-irradiation-induced genetic changes on human peripheral blood lymphocytes has been investigated . Amifostine, known as a potent radical scavenger, has been introduced as the most effective radioprotector, yet it is not completely approved for the clinical use. However, furt...

Objective: To investigate the radioprotecting ability of the extract of the medicinal plant Holarrhena antidysentrica, especially to protect DNA from gammaradiation induced damages. Materials and Methods: Hydo-alcoholic extract of dried roots of Holarrhena antidysentrica (HAE) was prepared, freeze dried and stored at 4C. The DNA of the plasmid pBR322 was exposed to gamma-radiation in presence a...