Showing 3 results for Hippocampus
Mohsen Omidi, Mohsen Salesi, Rasoul Rezaei, Maryam Koushki Jahromi,
Volume 21, Issue 6 (3-2022)
Abstract
Background: BDNF protein is the important neurotrophin that is involved in cognitive function. Diabetes can lead to impaired function and is a neurocognitive disorder's factor in hippocampus. Therefore, the purpose of this study was to evaluate the effect of 8 weeks of concurrent training on BDNF levels in the brain hippocampus and cognitive function of streptozotocin-induced diabetic rats.
Methods: 40 of Sprague-Dawn rats were randomly divided into four groups: healthy inactive, non-healthy concurrent exercise, diabetic group without exercise, and diabetic concurrent exercise. Rats in the training groups performed concurrent training for 8 weeks. After 8 weeks, subjects' memory was assessed using a cognitive function test in a water maze. BDNF levels in the hippocampus were measured by Western blotting. One-way analysis of variance and LSD post hoc test were used to analyze the data.
Findings: The present study showed that eight weeks of concurrent exercise resulted in a significant reduction in fasting blood sugar in the healthy exercise group compared to the diabetic group. A significant decrease in BDNF levels of the cerebral hippocampus was also observed in the diabetic exercise group compared to the diabetic group. In addition, the level of memory function in healthy exercise and diabetic exercise groups was significantly higher than healthy control and patient control.
Conclusion: Concurrent exercise reduces BDNF hippocampus and increased cognitive function in the exercise group compared to the control group. As a result, it can be said that this type of exercise is very effective in improving the complications of type 2 diabetes.
Saeed Naimi, Vahid Valipour Dehnou, Masoud Moeini,
Volume 22, Issue 6 (3-2023)
Abstract
Background: One of the complications of type 2 diabetes is the development of neurocognitive disorders, and DCX and AMPA may be involved in this disorder. Therefore, this study aimed to investigate the effect of aerobic exercise on the DCX and AMPA in the hippocampus of rats with type 2 diabetes.
Methods: 32 eight-week-old male rats were divided into control (C), diabetes (D), diabetes-exercise (DT), and exercise (T) groups. Diabetes was induced by streptozotocin injection. The exercise was carried out for six weeks. Finally, the rats were dissected, and their hippocampus tissue was extracted. Proteins were measured by the ELISA method.
Results: There was nonsignificant difference between the DCX of the C group and the T and DT groups (p>0.05). But there was a significant difference between the DCX of the C and diabetic groups (p =0.05). Also, a significant difference was observed between the diabetic groups and the T group (p<0.05). AMPA in diabetic groups were significantly lower than in C and T groups (p<0.05) While the difference between C and T groups and D and DT groups was not significant (p>0.05). Also, a significant negative correlation was observed between AMPA and DCX with blood glucose.
Conclusion: Diabetes reduces the AMPA and DCX but exercise nonsignificantly reduces the effect of diabetes on those. According to the appropriate duration of exercise, there is a possibility that due to the significant negative correlation between these proteins and glucose, the intensity of exercise can significantly reduce the negative effect of diabetes on those.
Shadi Jalalian, Hossein Abednatanzi, Mandana Gholami, Farshad Ghazalian,
Volume 23, Issue 4 (11-2023)
Abstract
Background: Oxidative stress and insulin resistance in type 2 diabetes are one of the factors in the development of cognitive disorders and Alzheimer's. So measuring the changes in beta amyloid gene expression and insulin resistance as one of the prominent disorders in type 2 diabetes, following HIIT and thyme’s honey consumption is the aim of the research.
Methods: The present study was conducted with 36 young male Wistar rats, which were divided into 4 groups: control (C), interval training (T), thyme’s honey (H) and interval training-thyme’s honey (TH) was performed. The rats in the T and TH groups were trained for two months with intervals and intensity gradually increasing, and in the H and TH groups, they received 3 g/kg of thyme’s honey. Weight, fasting glucose and insulin were measured through the kit and insulin resistance index was done through the formula and gene expression were evaluated by RT-PCR. The findings were subjected to one-way and two-way ANOVA and Bonferroni's test.
Results: Non-significant (NS) increase in weight, significant increase in insulin and significant decrease in gene expression in all intervention groups compared to C, significant decrease in fasting glucose in T and TH groups compared to C, significant decrease in insulin resistance in T group compared to other groups, NS increase was observed in group H and TH compared to C.
Conclusion: HIIT and thyme’s honey had synergistic effect to reduce glucose and beta-amyloid gene expression as a preventive strategy for the occurrence of pathological features related to Alzheimer's and memory impairment in diabetics.
