Berberine regulates glycemialocal inhibition of intestinal dipeptidyl peptidase-Ⅳ / 浙江大学学报·医学版
Journal of Zhejiang University. Medical sciences
;
(6): 486-492, 2016.
Article
in Chinese
| WPRIM
| ID: wpr-239560
ABSTRACT
To investigate the effect of berberine on glycemia regulation in rats with diabetes and the related mechanisms.Diabetic-like rat model was successfully induced by intraperitoneal injection of streptozotocin in 50 out of 60 male SD rats, which were then randomly divided into 5 groups with 10 rats in eachcontrol group (received vehicle only), positive drug control group (sitagliptin 10 mg·kg·d), low-dose berberine group (30 mg·kg·d), moderate-dose berberine group (60 mg·kg·d), and high-dose berberine group (120 mg·kg·d). All animals were fed for 3 d, and fasting blood sampling was performed on day 3 of administration. Rats were given glucose (2 g/kg) by gavage 30 min after the last dose. Blood and intestinal samples were obtained 2 h after glucose loading. Fasting blood glucose (FBG) and 2-h postprandial plasma glucose (2h-PPG) were detected by using biochemical analyzer, and insulin, glucagon-like peptide-1 (GLP-1) and dipeptidyl peptidase-Ⅳ(DPP-Ⅳ) were measured by using ELISA kit.No significant difference in FBG and serum DPP-Ⅳ level were found between berberine groups and control group (all>0.05). Compared with control group, serum levels of GLP-1 and insulin were increased in high-and moderate-dose berberine groups, while 2h-PPG was decreased (all<0.05); GLP-1 levels in the intestinal samples were increased, while DPP-Ⅳ levels were decreased in all berberine groups (all<0.05).Short-term berberine administration can decrease 2h-PPG level in streptozotocin-induced diabetic rat model through local inhibition of intestinal DPP-Ⅳ. The efficacy of DPP-Ⅳ inhibitor may be associated with its intestinal pharmacokinetics.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pharmacology
/
Berberine
/
Blood
/
Blood Glucose
/
Pharmacokinetics
/
Chemistry
/
Rats, Sprague-Dawley
/
Dipeptidyl Peptidase 4
/
Diabetes Mellitus, Experimental
/
Dose-Response Relationship, Drug
Limits:
Animals
Language:
Chinese
Journal:
Journal of Zhejiang University. Medical sciences
Year:
2016
Type:
Article
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