Showing 5 results for Malondialdehyde
Ghojagh D., Deylam Katoli H., Habibi Nodeh M.,
Volume 19, Issue 3 (9-2013)
Abstract
Aims: Diabetes is a world wide health threat and treatment of this disease is very important in medical sciences. The aim of this investigation was to determine the carbonyl and malondialdehyde levels and glutathione peroxides activity in the erythrocytes of diabetic rats.
Methods: In this experimental study, 24 rats with 180-220g body weight were divided into two control and diabetic groups. Diabetic status was induced by intraperitoneal injection of alloxan. Malondialdehyde and carbonyl levels and glutathion peroxidase activity were measured by using special kits. Mean and diviation of data were calculated by SPSS 18 software and the difference of two groups was compared by student T test.
Results: The mean of malondialdehyde level in erythrocyte of diabetic group (2.27±0.22mmol/mg of protein) was increased compared to control group (1.16±0.15mmol/mg of protein p<0.05). Mean of carbonyl content in erythrocytes of diabetic group (2.98±0.35 mmol/mg of protein) was increased compared to control group (0.75±0.17mmol/mg of protein p<0.05). Mean of glutathion peroxidase activity level in erythrolytes of diabetic group (5.73±0.46 m molNADPH/min/mg of protein) was increased compared to control group (2.98±0.33 m molNADPH/min/mg of protein p<0.05).
Conclusion: Mean levels of carbonyl and malondialdehyde and glutathion peroxidase activity increases in diabetic rats compare to non-diabetic rats.
F. Fathollahi Shoorabeh , B. Tarverdyzadeh , S. Aminbaksahayesh ,
Volume 23, Issue 4 (9-2017)
Abstract
Aims: Breast cancer is the most common cancer among women that usually begins with abnormal growth and division of different breast cells. There is some evidence that there is an inverse relationship between levels of antioxidants and the risk of breast cancer. The purpose of this study was to investigate the effect of 8 weeks resistance training on some antioxidant/oxidative indexes in postmenopausal women with breast cancer.
Materials & Methods: In this semi-experimental study, in 2014, 30 postmenopausal women with breast cancer in Khorramabad city were selected by available sampling method and randomly divided into 2 groups: experimental group (n=16) and control group (n=14). The experimental group performed resistance training for 8 weeks, which started from 30% 1RM (one repetition maximum) and reached 45-50% 1RM at the end of the eighth week. Blood samples were taken from subjects for the measurement of superoxide dismutase (SOD), glutathione peroxidase (GPX) and malondialdehyde (MDA) serum levels, 48 hours before and after the training protocol. Data were analyzed by SPSS 19 software using independent t-test and dependent t-test.
Findings: After performing 8 weeks of resistance training, serum levels of SOD and GPX significantly increased and MDA levels decreased significantly (p<0.05), but changes in control group were not significant (p>0.05).
Conclusion: Resistance training for 8 weeks increases antioxidant indexes and decreases oxidative indexes in postmenopausal women with breast cancer.
Yeganeh Feizi, Mohammad Esmaeil Afzalpur, Seyed-Hosein Abtahi-Eivary,
Volume 25, Issue 4 (9-2019)
Abstract
Aims Physical activity is usually accompanied by free radicals’ production and oxidative stress. Moreover, to prevent adverse effects, coaches and athletes have to use proper supplementation. Therefore, the present study aimed to investigate the effect of short-term coenzyme Q10 supplementation on malondialdehyde and serum catalase enzyme activity following moderate and severe acute resistance training in inactive female students.
Methods & Materials In total, 27 female students were randomly divided into three groups; the groups were homogeneous and equal (two groups of resistance training and one control group). The experimental groups were subjected to moderate-intensity acute (70% 1RM) acute and severe acute activity (85% 1RM) and supplemented with coenzyme Q10 (30 mg /d). CAT and MDA were measured in ELISA using a human kit.
Findings Moderate and severe acute resistance activities did not alter MDA and catalytic activity (P>0.05); however, after 2 weeks of coenzyme Q10 supplementation, those resulted in a significant decrease in MDA (0.006 and 0.01, respectively) and CAT (0.04 and 0.007, respectively). There were no significant differences between the effects of two exercises (P>0.05).
Conclusion Short-term (two weeks) supplementation of coenzyme Q10 and severe acute resistance activity could reduce two important oxidative stress indexes (MDA and CAT).
Jaber Zafari, Fatemeh Javani Jouni, Elaheh Shams, Ali Asghar Rastegari,
Volume 28, Issue 2 (3-2022)
Abstract
Aims Because cancer is the leading cause of death worldwide, finding a better way to treat it seems essential. Doxorubicin is one of the most common drugs in the treatment of cancer, which has many negative and toxic effects. Therefore, efforts to produce effective anticancer drugs through screening natural compounds, such as animal toxins continue. This study aimed to evaluate the effect of Naja naja oxiana snake venom in comparison with doxorubicin on the proliferation rate and concentration of malondialdehyde in the human cervical cancer cell line (HeLa) and fibroblast cells (HFF).
Methods & Materials HeLa and normal fibroblast cancer cell lines were exposed to different concentrations of snake venom and doxorubicin for 24 and 48 hours. The amplification rate was determined using trypan blue staining and malondialdehyde (MDA) concentration was measured to evaluate the effects of oxidative stress. Data were analyzed using SPSS software, version 19.
Findings The results showed that with increasing concentration and treatment time with snake venom and doxorubicin, the cell proliferation rate decreases, and MDA content increases. The highest decrease in proliferation rate and increase in MDA concentration were observed in the HeLa cancer cell line treated with 500 µg/mL of snake venom for 48 hours.
Conclusion In comparison with doxorubicin, snake venom has a significant inhibitory effect on the HeLa cancer cell line with minimal effect on normal fibroblast cells.
Seyed Ali Hoseinian, Seyed Reza Mirhafez, Jamshid Mehrzad, Jafar Saeidi, Rahele Zhiani, Amirhossein Sahebkar,
Volume 29, Issue 1 (12-2022)
Abstract
Background: Non-alcoholic Fatty Liver Disease (NAFLD) is one of the most common chronic liver diseases worldwide and oxidative stress (OS) is one of the most important factors of pathophysiology in the development of this disease. The use of antioxidant agents for preventing and treating NAFLD has been suggested in several studies. Due to the antioxidant function of curcumin, the effects of curcumin on serum level of malondialdehyde (MDA) as an oxidative stress marker and enzymes activity level of catalase (CAT) and superoxide dismutase (SOD) were investigated in this study.
Methods: In this study, 70 patients with NAFLD were selected and distributed through randomized blocks in two groups of receiving curcumin 500mg plus piperine 5mg and placebo. CAT and SOD markers were measured by photometric method and MDA marker by calorimetric method before and after the intervention.
Findings: Comparison of the changes in the serum level of MDA factor and the activity of CAT and SOD enzymes in the serum of the studied patients after the intervention showed that the serum activity of catalase enzyme increased significantly due to the consumption of the combination of curcumin 500 mg and piperine 5 mg (p = 0.008) while SOD and MDA factors did not show any significant difference in the two studied groups.
Conclusion: The results indicate that daily use of curcumin in patients with NAFLD can increase the serum activity of catalase. According to the results of this study, the use of curcumin as a natural supplement, might be effective in blunting the negative effects of oxidative stress in patients with NAFLD.
