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Neurons in the hippocampal CA1 region,but not the dentate gyrus,are susceptible to oxidative stress in rats with streptozotocin-induced type 1 diabetes

引用

Neural Regeneration Research 2015年第3期10卷 451-456页

作者： Sang Gun Lee Dae Young Yoo Hyo Young Jung Sung Min Nam Jong Whi kim Jung Hoon Choi Sun Shin Yi moo-Ho Won Yeo Sung Yoon In koo Hwang Seung Myung moon Departments of Neurosurgery Dongtan Sacred Heart HospitalCollege of MedicineHallym University Department of Anatomy and Cell Biology College of Veterinary Medicineand Research Institute for Veterinary ScienceSeoul National University Department of Anatomy College of Veterinary MedicineKangwon National University Department of Biomedical Laboratory Science College of Medical SciencesSoonchunhyang University Department of Neurobiology School of MedicineKangwon National University

In this study, we investigated the effects of streptozotocin-induced type 1 diabetes on antioxi- dant-like protein-1 immunoreactivity, protein carbonyl levels, and malondialdehyde formation, a marker for lipid peroxidation, in the hippocampus. For this study, streptozotocin （75 mg/kg） was intraperitoneally injected into adult rats to induce type 1 diabetes. The three experimental pa- rameters were determined at 2, 3, 4 weeks after streptozotocin treatment. Fasting blood glucose levels significantly increased by 20.7-21.9 mM after streptozotocin treatment. The number of antioxidant-like protein-1 immunoreactive neurons significantly decreased in the hippocampal CA1 region, but not the dentate gyrus, 3 weeks after streptozotocin treatment compared to the control group. Malondialdehyde and protein carbonyl levels, which are modified by oxidative stress, significantly increased with a peak at 3 weeks after malondialdehyde treatment, and then decreased 4 weeks after malondialdehyde treatment. These results suggest that neurons in the hippocampal CA1 region, but not the dentate gyrus, are susceptible to oxidative stress 3 weeks after malondialdehyde treatment.

关键词： nerve regeneration hippocampus dentate gyrus lipid peroxidation type 1 diabetes malondialdehyde neurons neural regeneration

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