PMID- 23644108 OWN - NLM STAT- MEDLINE DCOM- 20140717 LR - 20130506 IS - 1673-4254 (Print) IS - 1673-4254 (Linking) VI - 33 IP - 4 DP - 2013 Apr TI - [Effect of homocysteine on gluconeogenesis in mice]. PG - 507-10 AB - OBJECTIVE: To investigate the expressions of glucose-6-phosphatase (G6Pase) and phosphoenolpyruvate carboxykinase (PEPCK) in the liver of mice with hyperhomocysteinemia (HHcy) and explore the mechanism of gluconeogenesis induced by homocysteine. METHODS: Fifty mice were randomly divided into normal control group (n=25) and HHcy group (n=25) and fed with normal food and food supplemented with 1.5% methionine, respectively. After 3 months of feeding, the fasting blood glucose and insulin levels were determined, and HOMA insulin resistance index (HOMA-IR) was calculated. The expressions of G6Pase and PEPCK in the liver of mice were detected using RT-PCR and Western blotting. RESULTS: The fasting blood glucose and insulin levels and HOMA-IR were significantly higher in HHcy group than in the control group (P<0.05). RT-PCR and Western blotting showed that the hepatic expressions of G6Pase and PEPCK mRNA and proteins increased significantly in HHcy group compared with those in the control group (P<0.05). CONCLUSION: Homocysteine promotes gluconeogenesis to enhance glucose output and contribute to the occurrence of insulin resistance. FAU - Wang, Yanan AU - Wang Y AD - Department of Pathology and Pathophysiology, Kunming Medical University, China. 562768905@qq.com FAU - Yang, Lijuan AU - Yang L FAU - Wang, Welin AU - Wang W FAU - Feng, Weiyang AU - Feng W FAU - Gui, Li AU - Gui L FAU - Wang, Fang AU - Wang F FAU - Li, Shude AU - Li S LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Nan Fang Yi Ke Da Xue Xue Bao JT - Nan fang yi ke da xue xue bao = Journal of Southern Medical University JID - 101266132 RN - 0LVT1QZ0BA (Homocysteine) RN - EC 3.1.3.9 (Glucose-6-Phosphatase) RN - EC 4.1.1.49 (Phosphoenolpyruvate Carboxykinase (ATP)) SB - IM MH - Animals MH - *Gluconeogenesis MH - Glucose-6-Phosphatase/*metabolism MH - Homocysteine/*blood MH - Hyperhomocysteinemia/metabolism MH - Insulin Resistance MH - Liver/*metabolism MH - Male MH - Mice MH - Mice, Inbred Strains MH - Phosphoenolpyruvate Carboxykinase (ATP)/*metabolism EDAT- 2013/05/07 06:00 MHDA- 2014/07/18 06:00 CRDT- 2013/05/07 06:00 PHST- 2013/05/07 06:00 [entrez] PHST- 2013/05/07 06:00 [pubmed] PHST- 2014/07/18 06:00 [medline] PST - ppublish SO - Nan Fang Yi Ke Da Xue Xue Bao. 2013 Apr;33(4):507-10.