Cell and Tissue Journal

Abstract Aim: The aim of this study was to investigate the preventive role of vitaminE (Vit.E) on spermatogenesis indexes in rats following exposure to Bisphenol A. Materialand and Methods: Adult male wistar rats with the mean body weight of 231±10g were randomly divided into 4 groups (n=6): control, BPA (250mg/kg/day), Vit.E (150mg/kg/day) and BPA + Vit.E.  Oral treatment was performed three times a week till 56 days. At the end of the treatment, the rats were killed and their left testis were weighed, fixed and stained using Heidenhain's Azan  methed. Histological and morphometrical analysis of spermatogenesis was carried out. Data were analyzed using One Way ANOVA and  the means were considered significantly different  at p < strong>Results: Testis weight (p < 0.01) significantly decreased in the BPA group compared to the control. A significant decrease (p < 0.001) in the mean diameter of seminiferous tubules and the germinal epithelium thickness and the indexes of tubular differentiation, spermiogenesis and meiosis were also observed in the testicular tissue of rats treated with BPA compared to the control ones. In the BPA +Vit.E group, the mentioned parameters increased significantly to the control level. Conclusion: Vitamin E can compensate for the undesired effects of BPA on spermatogenesis and therefore could be considered as a therapeutic supplement in the case of BPA toxicity.  

Abstract Aim: Acute promyelocytic leukemia is the most common leukemia among adults. Nowadays vitamin E has been used for cancer treatment in research and clinical approach. Application of high concentrations of vitamin E to induce apoptosis have side effects so in this study we examined the effect of bee venom or vitamin E or both together on the induction of apoptosis in HL-60 cell line in order to increase anti-proliferative ability and reduce side effect of vitamin E.
Material and Methods:HL-60 cell line were cultured in RPMI medium and then treated with different concentrations of vitamin E and bee venom. The effect of bee venom and vitamin E on cell viability and proliferation were measured by MTT assay and cell counting trypan blue staining. Data were analyzed using one-way ANOVA test and Instate 3 software.
Result: Our results show that inhibitory effect of vitamin E increased dramatically in the presence of bee venom. On this basis we suggest that non- toxic concentration of bee venom can increase anti –proliferative activity of vitamin E on HL-60 cancer cells.
Conclusion: Our result show that  non-toxic concentration of BV can increase inhibitory effects of vitamin E and it make hope that BV can increases the anti-proliferative  potential of vitamins  in non-toxicconcentration and  concentration  withoutside effectsin the future.
 
 

Abstract Aim: Para-Nonylphenol is an environmental pollutant which can generate free radicals causing tissue damage. The aim of this study was to investigate the effect of vitamin E as a strong antioxidant on kidney tissue in rats treated with para-Nonylphenolusing’stereological technique.
Material and Methods: Twenty fourmaleWistar rats with the mean body weight of 198±20 g were randomly divided into 4 groups (n=6), control, vitamin E (100mg/kg/day), Para-Nonylphenol (250mg/kg/day) and Para-Nonylphenol+ vitamin E, and treated orally for 56 days. Finally, the rats were weighted and their right kidneys were taken out, fixed, sectioned, processed and stained using Heidenhain̕& azan method. The kidney tissue was then studied using stereological methods. Data were analyzed using one way ANOVA and means difference was considered significant at p < 0.05.
Results: The mean kidney weight, the total volume of kidney, the volume of cortex and medulla, the volume of proximal and distal tubule lumen, interstitial tissue and the volume of glomerulus and tuft significantly increased in Para-Nonylphenol group compared to the control ones, while the volume of proximal and distal tubules epithelium and the volume of Bowman’s space reduced significantly.
Conclusion: Vitamin E could compensate many adverse effects of Para-Nonylphenol on the kidney tissue. Consequently, vitamin E could be used as a potential antioxidant (supplement) against NP intoxication.
 

Abstract Aim: The aim of this research was the cloning and sequencing of gamma tocopherol methyl transferase gene (γ-tmt) from Memory 1 cv and transferring it into an oilseed plant such as canola, in the future studies for improving its nutritional value. Material and Methods: Total RNA was extracted from tomato fruit and cDNA constructed. By using specific primers the γ-tmt gene was amplified by PCR reaction and a 1089 bp fragment was produced. The amplified fragment and the pBluescript (SK-) vector were digested by XbaI. The ligation reaction was carried out by T4 ligase. E. coli competent cells were transformed by the resulting vector and recombinant colonies were identified using the white-blue screening assay. Results: The nucleotide sequence of the gene was determined and aligned with the available sequences recorded in the NCBI data bank. This sequence showed 98% similarity with the other recorded γ-tmts from Solanaceae family. Some changes in nucleotide sequence and the deduced amino acids were observed. The secondary and tertiary structures of the protein were predicted, using PSIpred software. A phylogenetic tree was also constructed for the protein product of the gene, using ClustalW. Conclusion: The cloned cDNA of γ-tmt showed 98 % similarity with the recorded sequence from tomato cv Cerasiforme. Upon transfer of this gene into an oil seed plant such as canola, one can increase both its nutritional value and resistance to environmental stresses.