The function changes of HPA axis in diabetic rat model induced by high lipid food plus STZ and relation with glucose and lipid metabolism
- VernacularTitle:高脂饲料加STZ联合诱导的大鼠糖尿病模型HPA轴功能变化与糖脂代谢的关系
- Author:
Lijun WANG
;
Ruxue ZHANG
;
Zhengping JIA
;
Maoxing LI
;
Jianguo QIU
- Publication Type:Journal Article
- Keywords:
streptozotocin;
diabetes mellitus;
HPA axis;
Rehmannia glutinosa oligosaccharides;
glucose and lipid metabolism;
modulation
- From:
Chinese Pharmacological Bulletin
2010;26(3):325-329
- CountryChina
- Language:Chinese
-
Abstract:
Aim To investigate HPA axis change relation with glucose and lipid metabolism.Methods Wistar rats were injected intraperitoneally with STZ (30 mg·kg~(-1)) after fed with high lipid food for two months, then rats with blood glucose of over 15 mmol·L~(-1) were used in the experiment. Animals were divided into four groups: normal group, diabetic model group, treatment group (ROS 200 mg·kg~(-1) ·d~(-1) ig), and metformin group (200 mg·kg~(-1)·d~(-1) ig).Rats were decapitated after they had been administered ig for four weeks and were 24 hour urine collected.Plasma CRH, ACTH, corticosterone, hypothalamic CRH, ACTH of pituitary gland, 24 hour urinary corticosterone and plasma insulin were determined by ELISA and radio immunity kit respectively.Results In diabetic rat model induced by high lipid food and STZ, plasma and urinary glucose level and plasma TC, TG levels were increased, plasma HDL-C and hepatic glycogen content were reduced, which was synchronized with changes of higher pituitary ACTH, plasma and total 24 hour urine corticosterone excretion.Conclusion The disorder of glucose and lipid metabolism of model induced by high lipid food and low dose STZ may be linked to the change of HPA axis.The improvement of ROS on glucose and lipid metabolism in diabetic rats may be linked to the decrease of HPA axis activity.
