کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9645172 | 1433686 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Glucose regulation of memory for reward reduction in young and aged rats
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
سالمندی
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چکیده انگلیسی
Although baseline blood glucose levels in aged Fischer-344 rats are comparable to those of young rats, the rise in blood glucose in response to training-related stress is substantially attenuated. The diminished response may contribute to increased depletion of extracellular brain glucose levels during training in aged rats; the depletion is blocked and memory is enhanced by systemic injections of glucose. The present experiment examined the role of glucose in regulating memory for reward reduction training. Blood glucose levels exhibited a significant rise after reward reduction trials in young adult but not 2-year-old rats. Although young and aged rats exhibited comparable learning during the day of reward reduction training, aged rats exhibited more rapid forgetting of the learning response. Post-training glucose injections (200Â mg/kg, i.p.) facilitated memory formation and slowed the rate of forgetting in young and old rats, consistent with the view that deficiencies in circulating glucose responses to training may contribute to the rapid forgetting evident in aged Fischer-344 rats.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neurobiology of Aging - Volume 26, Issue 1, January 2005, Pages 45-52
Journal: Neurobiology of Aging - Volume 26, Issue 1, January 2005, Pages 45-52
نویسندگان
Juan A. Salinas, Paul E. Gold,