Experimental research on establishing a blood glucose fluctuation model in diabetic rats / 南方医科大学学报
Journal of Southern Medical University
; (12): 771-776, 2014.
Article
in Zh
| WPRIM
| ID: wpr-249361
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To establish a blood glucose fluctuation model in diabetic rats.</p><p><b>METHODS</b>Male SD rats were randomly divided into 2 groups, namely normal group and diabetes group. Rat model of diabetes was established by single intraperitoneal injection of streptozotocin (STZ) and then divided into sustained high blood glucose group and blood glucose fluctuation group. Rat model of blood glucose fluctuation was established by subcutaneous injection with regular insulin or gavaging of glucose twice daily in diabetic rats. The general condition, body weight, daily blood glucose levels of 5 different times, daily average blood glucose (MBG), standard deviation of daily average blood glucose (SDBG), the maximum amplitude of glycemic excursions (LAGE), fasting serum insulin (FINS) and pancreatic tissue pathology were observed.</p><p><b>RESULTS</b>Rats in blood glucose fluctuation group and sustained high blood glucose group developed symptoms of polyphagia, polyuria and polydipsia. Though significant differences in body weight were observed at different time (P<0.01), no significant differences were found among the three groups (P>0.05). After 6 weeks of blood glucose fluctuation, MBG, SDBG and LAGE in blood glucose fluctuation group and sustained high blood glucose group were increased significantly than those in normal group (P<0.01), the level of FINS decreased markedly (P<0.05). SDBG and LAGE in blood glucose fluctuation group were higher than those in sustained high blood glucose group (P<0.01). Islet of diabetic rat became atrophy, irregular shape, sparse distribution, and decreased in number, and the changes were more obvious in blood glucose fluctuation group.</p><p><b>CONCLUSION</b>Rat model of blood glucose fluctuation can be successfully established by subcutaneous injection of regular insulin of gavage of glucose twice daily in diabetic rats.</p>
Full text:
1
Database:
WPRIM
Main subject:
Blood Glucose
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Body Weight
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Fasting
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Rats, Sprague-Dawley
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Streptozocin
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Diabetes Mellitus, Experimental
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Glucose
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Insulin
Limits:
Animals
Language:
Zh
Journal:
Journal of Southern Medical University
Year:
2014
Document type:
Article