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The aim of this study was to investigate the radioprotective effect of salicin against irradiation effect on spleen tissue in male rats. Lipid peroxidation product (MDA) level was measured as thiobarbituric acid reactive substance. Ultrastructural examination was carried out in spleen tissue by scanning electron microscope (SEM). The polyacrylamide gel electrophoresis for native protein, lipoprotein and zymogram were carried out in spleen homogenate. As expected, salicin resisted the irradiation effect and declined the MDA level in spleen homogenate of all treated groups. The alterations which were occurred as a result of irradiation in the spleen tissue could not be detected microscopically but they were detected electrophoertically at levels of protein and isozymes. Salicin prevented the qualitative mutagenic effect of irradiation on the electrophoretic protein pattern in the irradiated salicin simultaneous treated group (SI = 0.73). It showed the highest protective effect against qualitative mutagenic irradiation effect in catalase pattern in irradiated salicin pre-treated group (SI = 0.80). It could not prevent the abnormalities occurred qualitatively and quantitatively as a result of irradiation in peroxidase pattern in all irradiated salicin treated groups. While the esterase pattern showed the same electrophoretic pattern in the all irradiated salicin treated groups. The results suggested the radioprotective ability of salicin against gamma irradiation effect on various ultrastructural and electrophoretic patterns in spleen tissue of male rats.

The aim of this study was to investigate the radioprotective effect of salicin against irradiation effect on brain tissue of male rats. Lipid peroxidation level was measured as thiobarbituric acid reactive substance in brain tissue. The polyacrylamide gel electrophoresis for native protein, lipoprotein and zymogram were carried out in brain homogenate. As expected, salicin resisted the irradiation effect and declined the MDA level in brain homogenate of all treated groups (especially in the irradiated salicin post-treated group). Salicin minimized the qualitative mutagenic effect of irradiation on the electrophoretic protein pattern in all irradiated salicin treated groups and it showed the highest antagonistic effect against irradiation in irradiated salicin post-treated group (SI = 0.57). It could not prevent the abnormalities occurred qualitatively and quantitatively as a result of irradiation in lipoprotein pattern in all irradiated salicin treated groups. In the electrophoretic esterase pattern, salicin prevented the qualitative effect of irradiation in irradiated salicin post-treated group (SI = 1.00). Salicin minimized the qualitative irradiation effect on the catalase pattern in the irradiated salicin pre-treated group (SI = 0.73). While in the peroxidase pattern, salicin adminstration resisted the irradiation effect in the irrradiated post-treated groups (SI = 0.67). The results suggested the radioprotective ability of salicin against gamma irradiation effect on various electrophoretic patterns in brain tissue of male rats.

Drugs used for treatment of cancerous diseases by mean of chemotherapy are often limited due to their severe undesirable side effects in multiple organs. Cyclophosphamide (CYP) belongs to class of the cytotoxic bifunctional alkylating agents. In the current study, it was revealed that CYP caused significant (P˂0.05) elevation in levels of different biochemical measurements. Carob extract exhibited beneficial effect through lowering of all elevated parameters. Furthermore, CYP caused decline in total antioxidant capacity (TAC) level in association with elevation of lipid peroxidation (LPO) level and significantly (P˂0.05) in liver tissue. Carob extract restored TAC and lowered LPO level. CYP caused several histopathological alterations in the hepatocytes and carob extract minimized severity of these alterations. The similarity index percent (SI %) in the native electrophoretic protein, lipoprotein and calcium moiety of protein patterns was represented by lowest values (87.50, 66.67 and 70.59, respectively) with the CYP-treated group. The SI % values increased in all carob treated groups. In all electrophoretic isoenzymes, the SI % value was represented by the lowest value (60.00, 66.67, 66.67 and 53.33 respectively with catalase (CAT), peroxidase (GPx), α- and β-esterase (EST) patterns) in CYP-treated group. While in all carob treated groups, the SI % value reached the highest value (100.00). Furthermore, CYP induced cleavage of the genomic DNA and the carob extract maintained the DNA integrity. The study concluded that carob showed ameliorative effect against alterations induced by CYP at biochemical, histopathological and molecular levels in liver tissue of rats.