وژی ل و ی ز فی ه جل م اریان وژی ل و ک ا م افر و Effect of metformin against hydrogen peroxide-induced apoptosis in human vascular endothelial cells (original) (raw)
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2019
Introduction The heart muscle is one of the most susceptible tissues for oxidative damage. SOD and CAT enzymes play an important role in reducing oxidative stress. The aim of this study is to determine the effect of 6-weeks force swimming on the levels of SOD and CAT cardiomyocyte in adult rats treated with hydrogen peroxide. Materials and Methods 32 Wistar male rats (180 ± 20g) were randomly divided into four groups: (1) control, (2) sham (saline), (3) hydrogen peroxide, (4) exercise & hydrogen peroxide. The mice in groups 3 and 4 received hydrogen peroxide (1 mmol/kg, ip.) on alternate days for three weeks. In the exercise group, force swimming was conducted for 6-weeks, 60 minutes a day and 5-days a week. The activity of enzymes was measured by the ELISA method. Analysis of variance (ANOVA) was used to determine the significance (p<0.01). Results The results showed that treated rats with hydrogen peroxide caused a significant decrease in SOD & CAT activity. However, a signific...
Majallah-i Dānishkadah-i ̒ulūm-i Pizishkī-i Niyshābūr, 2019
Introduction Diabetes mellitus is a serious and complex chronic disease and is a major contributor to the health problems around the world. The purpose of this study was to compare the simultaneous effect of resveratrol supplementation and continuous training on anti-oxidative markers (SOD and GPX) and hepatocytic oxidative marker (MDA) in streptozotocin-diabetic male Wistar rats. Materials and Methods 60 wistar rats including healthy control groups, diabetic, diabetic saline, resveratrol supplement, continuation training and complementary resveratrol + continuation training were evaluated. (SOD and GPX) and (MDA) were evaluated by ELISA kit. One-way analysis of variance and Tukey's post hoc test were used for data analysis. The significance level was considered 0.05 and SPSS 23 software was used. Results The mean concentration of SOD and GPX in diabetic and diabetic saline patients compared to other groups was significantly lower (P≥0/001) and MDA concentration in diabetic and ...
Qom Univ Med Sci J, 2019
Background and Objectives: Active oxygen species (ROS) are direct or indirect causes of cell damage. Continuously active heart muscle as an oxidative tissue is one of the tissues susceptible to oxidative damage. Malondialdehyde is one of the lipid peroxidation products, which is considered in the studies as an indicator of oxidative damage level. Crocin is also a carotenoid extracted from Saffron, which can affect the damage level with its antioxidant properties. In this study, the effect of crocin supplementation on the alteration of Malondialdehyde and catalase cardiomyocyte, was investigated in male rats poisoned with hydrogen peroxide. Methods: In this study, 32 male Wistar rats (mean weight, 180±20g) were randomly divided into four groups including: control, sham (saline injections), hydrogen peroxide, and Crocin and Hydrogen peroxide. For induction of oxidative stress in the H 2 O 2 groups, 1mmol/kg H 2 O 2 , was injected to the rats intraperitoneally every other days for 3 weeks, and in the supplement group, the rats intraperitoneally received 12.5mg/kg of crocin, every days. The alteration of MDA and CAT, was performed by ELISA technique. Data analysis was performed using one way ANOVA and Scheffe test. Results: In this study, induction of H 2 O 2 caused a significant increase in malondialdehyde and a significant decrease in the activity of catalase enzyme, and crocin consumption led to a significant reduction in malondialdehyde and significant increase in the activity of catalase enzyme in the heart tissue (p<0.01). Conclusion: The results of this study showed that supplementation with crocin leads to strengthening of antioxidant system and reduction of oxidative stress damages.
Iranian Journal of Medical Microbiology
Background and Aims: Oncolytic viruses (OVs) are a new approach in treatment of cancer. Antitumor efficacy of OVs were limited due to insufficient and non-specific viral delivery to tumor sites. To overcome this issue, mesenchymal stem cells (MSCs) were used for their ability to specifically homing into tumors. The main aim of this study was to use MSCs as carriers and investigate the effect of oncolytic reovirus infection in MSCs, induction of apoptosis, nitric oxide (NO) secretion and their effects for selectively killing tumor cells, to use in future. Materials and Methods: MSCs isolated from mice adipose tissue and confirmed. Then, the ability of the virus to infect MSCs and the effect of reovirus infection in induction of apoptosis and NO secretion in MSCs were evaluated. Results: The results demonstrate that reovirus could replicate on MSCs. The finding indicated that the NO production significantly was higher at 72 h post infection with different MOI in comparison to the control cells. Also, reovirus induced high level of apoptosis in the MSCs at 48 h post infection compared with the control cells. Conclusions: Based on observed results, reovirus increased the secretion of iNOS (inducible nitric oxide) in the infected MSCs at 48 h post infection; therefore, high amounts of NO and reovirus replication were found to trigger apoptosis at 48 h post infection. Therefore, by optimizing the replication time of virus in the MSCs, specific viral delivery to tumor sites are available and causes cancer cells' death.
Scientific journal of Kurdistan University of Medical Sciences, 2022
Background and Aim: Non-alcoholic fatty liver disease, characterized by abnormal fat accumulation in the liver, is associated with obesity and insulin resistance. Vaspin is an adipokine secreted by adipose tissue, and its gene expression increases when insulin sensitivity is reduced. In this study, we made a comparison between 3D and 2D cultures in regard to the effects of vaspin on fatty acid metabolism. Materials and Methods: The steatosis model was induced by oleic and palmitic acid in HepG2 cell line in two-and three-dimensional cultures (collagen gel). Then, the cells were treated with 100 ng/ml vaspin for 24 hours. We used Real time PCR for measurement of the expressions of FABP4, MCAD, FAS and ApoB100 genes. Results: In two-and three-dimensional cultures, we found significant decrease in the expression of FABP4 and FAS genes. There was no significant difference between the expression of these genes in the two-and three-dimensional cultures. We detected significant increase in the expression of MCAD and ApoB100 genes in 2D and 3D cultures. We did not find any significant difference in the expressions of MCAD and ApoB100 genes between two-and three-dimensional cultures. Conclusion: Alteration of the expressions of the genes involved in uptake, lipogenesis, oxidation and secretion of fatty acids occurred in the group treated with vaspin compared to the control group in the 2-D and 3-D cultures. But, we did not find any significant difference in the expressions of these genes between the 2-D and 3-D cultures.
2015
در این مطالعه، بررسی تاثیر سمیت زیر کشنده شیرابه گیاه فرفیون ترکمنی(Euphorbia turcomanica) در غلظت های صفر، 0055/0، 011/0 و 022/0 گرم بر لیتر بر روی برخی تغییرات شاخص های بیوشیمیایی کبد ماهی آفانیوس گورخری (Aphanius dispar) پس از گذشت 15 و 30 روز و در شرایط آزمایشگاهی مورد مطالعه قرار گرفت. ابتدا مقدار میانگین (± خطای استاندارد) 50LC شیرابه گیاه فرفیون ترکمنی در زمانهای 24، 48، 72 و 96 ساعت به ترتیب 14/0±28/0، 06/0±19/0، 03/0±14/0، 02/0±11/0 گرم بر لیتر بدست آمد. برخی از شاخص های بیوشیمیایی شامل مقادیر آنزیم آسپارتات آمینوترانسفراز (AST)، آلانین آمینوترانسفراز (ALT)، لاکتات دهیدروژناز (LDH)، کراتین فسفوکیناز (CK)، و آلکالین فسفاتاز (ALP) در بافت کبد ماهیان بعد از گذشت 15 و 30 روز از شروع آزمایش اندازه گیری شد. تغییرات معنیداری در سطوح آنزیم های AST، ALT، LDH، CK، و ALP درمقایسه با گروه کنترل در عصاره بافتی کبد در طول دوره آزمایش، مشاهده شد. این تغییرات به صورت افزایش معنی دار در سطوح آنزیم های AST، LDH و ALP و کاهش معنی دار در میزان فعالیت آنزیم های ALT و CK بود. همچنین روند کاهش...