نتایج جستجو برای: radioprotection
تعداد نتایج: 740 فیلتر نتایج به سال:
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: 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...
The classical definition of lymphohematopoietic stem cells (LHSC), the most primitive progenitors of all blood cells, requires that they have the capacity for self-renewal and for the long-term production of all blood cell lineages. However, other characteristics of LHSC have been debated. Our previous data suggested that mouse LHSC are very slowly proliferating cells that generate delayed mult...
background: ionizing radiation induces the production of reactive oxygen species (ros), which play an important causative role in cell death. the aim of this study was to investigate the protective effects of sulfated derivatives of neutral polysaccharides extracted from auricularia auricular (snaap). materials and methods: whole blood samples from healthy donors treated with snaap at different...
background: this study has been undertaken to find out the possible radioprotective potential of the alstonia scholaris extract (ase). materials and methods: for experimental study, healthy swiss albino male mice were selected from an inbred colony and divided in four groups. group i (normal) did not receive any treatment. group ii was orally supplemented ase once daily at the dose of 100 mg/ k...
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