Ⅱ型糖尿病兔大脑皮质和海马神经元的神经丝蛋白表达

Objective: To investigate the morphological changes of the neuronal neurites in diabetic rabbitbrain. Methods: Twenty-four New Zealand White rabbits were divided into 2 groupes: control group and type Ⅱdiabetic group induced by high-carbohydrate and high-fat diet. The levels of blood sugar and insulin were detect-ed at week 0(w0), w4, w8, w13, w18, w23 and w28. Brain tissue was stained by Nissl staining and immunohis-tochemistry with a specific antibody to neurofilament proteins. Result: In diabetic rabbits, the amount of large pyra-

THE EXPRESSION OF NEUROFILAMENT PROTEINS IN CEREBRAL CORTEX AND HIPPOCAMPUS IN TYPE Ⅱ DIABETES IN RABBITS

Objective:To investigate the morphological changes of the neuronal neurites in diabetic rabbit brain. Methods: Twenty- four New Zealand White rabbits were divided into 2 groups: control group and type Ⅱ diabetic group induced by high - carbohydrate and high- fat diet. The levels of blood sugar and insulin were detected at week 0(w0), w4, w8, w13, w18, w23 and w28. Brain tissue was stained by Nissl staining and immunolistochemistry with a specific antibody to neurofilament proteins. Result: In diabetic rabbits, the amount of large pyramidal neuron was significantly reduced, and neuronal neurites became swollen, whorled, disrupted and changed in caliber. In hippocampus CA1 region neurofilament staining was very weak. Conclusion: Neurotoxicity of chronic hyperglycemia might be relevant to vascular chronic complications, which affected the expression of NF and led to neurophysiological and structural changes in the brain of rabbits with type Ⅱ diabetes.