کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4333218 1292926 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hyperglycemic brain injury in the rat
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
Hyperglycemic brain injury in the rat
چکیده انگلیسی

Children with diabetes onset before 5 years of age have reduced neurocognitive function. This problem has been attributed to hypoglycemia, a complication of insulin therapy. The eye, kidney, and nerve complications of diabetes (hyperglycemia) have been reduced by intensified insulin therapy which is associated with a 3-fold increase in severe hypoglycemia and therefore is not recommended for children less than 13 years of age. Since hyperglycemia is much more common than intermittent hypoglycemia during early childhood diabetes, it is important to determine if hyperglycemia affects brain growth and development. Rats were exposed to 4 weeks of either continuous hyperglycemia (diabetes) or intermittent (3 h, 3 times/week) hypoglycemia from 4 to 8 weeks of age. The brains of these animals were compared to those of similarly aged normal control animals. The cell number was increased, and the cell size reduced in the cortex of diabetic animals as assessed by DNA/wet weight of brain and protein/DNA content. Reduced amounts of protein, fatty acids, and cholesterol/μgram DNA also indicate smaller cells with reduced myelin content in the cortex of the diabetic animals. Histologic evaluation of these brains confirmed the biochemical findings. These observations require further confirmation and evaluation but indicate that continuous hyperglycemia may be more damaging than intermittent hypoglycemia to the developing brain. This is an important consideration for the management of diabetes mellitus in young children.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain Research - Volume 1076, Issue 1, 3 March 2006, Pages 9–15
نویسندگان
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