Showing 3 results for Catalase
Akbar Hajizadeh Moghaddam, Marzieh Ahmadalizadeh, Reza Seyrafi, Mahbobeh Aghagolzadeh, Sedigheh Khanjani,
Volume 17, Issue 6 (10-2018)
Abstract
Background: Diabetes mellitus is a worldwide prevalence of metabolic diseases and its important complications are gastrointestinal disturbances. A wide range of studies have been conducted on the physicochemical traits and pharmacological effects of curcumin on different diseases like diabetes and cancer. However, the poor oral bioavailability and instability of curcumin had greatly limited its further applications. The purpose of this study was to evaluate the effects of Nanocurcumin on the oxidative stress and tissue changes of small intestine in diabetic mice.
Methods: In this experimental study, animals were divided to five groups: Control, sham, diabetic (Intraperitoneal injection of 120 mg/kg of Streptozotocin) and diabetic groups treated with Nanocurcumin (7.5 and 15 mg/kg body weight) for 21days. At the end of experiment, catalase (CAT) activity and Malondialdehyde (MDA) level were measured in intestinal tissue. For histological assessment, villi length and crypt depth in small intestine were investigated.
Results: The oral administration of Nanocurcumin significantly increased intestinal CAT activity (P<0.05) and decreased MDA level (P<0.001). Also, the Villi length in diabetic groups treated with Nanocurcumin showed a significant increase compared to diabetic group (P<0.05).
Conclusion: The findings of this study showed that Nanocurcumin has a protective effect on diabetes-induced digestive disorders due to its antioxidant properties.
Morteza Chenari, Alireza Rahimi, Amir Sarshin, Foad Feizolahi,
Volume 22, Issue 2 (7-2022)
Abstract
Background: Damage to the heart tissue in diabetics causes inflammation and destruction of heart cells, which in turn leads to apoptosis or cell death. The aim of this study was to investigate compare the effect of six weeks of aerobic and resistance training on apoptotic indice of caspase-8 and catalase in the heart tissue of male diabetic rats.
Method: In this experimental study, 24 male Wistar rats were divided into six groups: aerobic training, resistance training, aerobic sham, resistance sham, control and healthy. Diabetes was induced by intraperitoneal injection of a single dose of streptozotocin in the amount of 30 mg per kg. The aerobic and resistance training program was performed for six weeks. Western blotting was used to measure caspase-8 and catalase. Data were analyzed by one-way analysis of variance and Tukey post hoc test at the P<0.05.
Results: The results showed that the mean difference of caspase-8 between aerobic training group and healthy group (P=0.752), resistance training group with healthy group (P=0.723) and resistance training with aerobic training group (P=1.00) were significant. Caspase 8 was lower in the aerobic exercise group than in the resistance exercise group. The difference between the mean catalase between the aerobic training group with the healthy group (P=0.024) and the aerobic training group with the resistance training group (P=0.023) was significant and the amount of catalase in the resistance training group was higher than aerobic training.
Conclusion: Aerobic and resistance training can reduce the apoptotic index of caspase-8 and increase catalase in the heart tissue of diabetic rats.
Mahin Rasuli, Ebrahim Zarrinkalam,
Volume 22, Issue 4 (11-2022)
Abstract
Background: A high-fat diet causes hyperinsulinemia and increases insulin resistance in the body. On the other hand, the oxidative stress caused by hyperglycemia can lead to the exacerbation of hyperglycemia and increase the complications of diabetes, and cardiovascular diseases are one of the most important complications of diabetes mellitus. Therefore, the aim of this study was to investigate the effect of 4 weeks of aerobic training on catalase enzyme activity in the left ventricle and insulin resistance index in male rats treated with streptozotocin and exposed to a high-fat diet.
Methods: In this experimental study, 19 male wistar rats, with an average age of 8-12 weeks and a weight of 200-250 grams, were divided into 3 groups: diabetic control (CD 8), training diabetes (TD 8) and healthy control (C 3). The exercise program included 4 weeks of aerobic exercise with an average of 60 to 75 Vo2max in an increasing manner. Before and 48 hours after the last training session, blood was taken and left ventricular tissue samples were extracted to check the HOMA-IR index and catalase activity by ELISA method. To compare the study groups, one-way analysis of variance and Scheffe's post hoc test were used in SPSS software (p≥0.05).
Results: The results showed that the induction of diabetes with STZ along with a high-fat diet causes a significant decrease in catalase enzyme (P=0.001) and a significant increase in HOMA-IR index, fasting glucose and Li index (P=0.001) in rats. However, doing 4 weeks of aerobic training caused a significant increase in catalase enzyme activity (P=0.001) and a decrease in HOMA-IR index, glucose and Li index (P=0.001).
Conclusion: Aerobic exercise with moderate intensity can be used as an effective non-pharmacological method in the treatment of diabetic cardiomyopathy by increasing catalase activity and reducing resistance to insulitis in diabetes.
