scholarly journals Relative contribution of glycogenolysis and gluconeogenesis to hepatic glucose production in control and diabetic rats. A re-examination in the presence of euglycaemia

Diabetologia ◽  
1998 ◽  
Vol 41 (3) ◽  
pp. 307-314 ◽  
Author(s):  
A. Giaccari ◽  
L. Morviducci ◽  
L. Pastore ◽  
D. Zorretta ◽  
P. Sbraccia ◽  
...  
Diabetes ◽  
2019 ◽  
Vol 68 (Supplement 1) ◽  
pp. 64-LB
Author(s):  
JEONGRIM KO ◽  
TAE NYUN KIM ◽  
DAE YUN SEO ◽  
JIN HAN

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Gireesh Dayma

Abstract Background and Aims The thyroid hormone (TH) plays an important role in glucose metabolism. Recently, we showed that the TH improves glycemia control by decreasing cytokines expression in the adipose tissue and skeletal muscle of alloxan-induced diabetic rats, which were also shown to present primary hypothyroidism. In this context, this study aims to investigate whether the chronic treatment of diabetic rats with T3 could affect other tissues that are involved in the control of glucose homeostasis, as the liver and kidney. Method Adult male Wistar rats were divided into nondiabetic, diabetic, and diabetic treated with T3 (1.5 ?g/100 g BW for 4 weeks). Diabetes was induced by alloxan monohydrate (150 mg/kg, BW, i.p.). Animals showing fasting blood glucose levels greater than 250 mg/dL were selected for the study. Results After treatment, we measured the blood glucose, serum T3, T4, TSH, and insulin concentration, hepatic glucose production by liver perfusion, liver PEPCK, GAPDH, and pAKT expression, as well as urine glucose concentration and renal expression of SGLT2 and GLUT2. T3 reduced blood glucose, hepatic glucose production, liver PEPCK, GAPDH, and pAKT content and the renal expression of SGLT2 and increased glycosuria. Conclusion Results suggest that the decreased hepatic glucose output and increased glucose excretion induced by T3 treatment are important mechanisms that contribute to reduce serum concentration of glucose, accounting for the improvement of glucose homeostasis control in diabetic rats.


2008 ◽  
Vol 56 (3) ◽  
pp. 567-573 ◽  
Author(s):  
Dana S. Hardin ◽  
Chul Ahn ◽  
Julie Rice ◽  
Mark Rice ◽  
Randall Rosenblatt

The incidence of diabetes is high in cystic fibrosis (CF) and is an important cause of morbidity and mortality. Understanding the pathophysiology is imperative. Studies have documented increased endogenous (mostly hepatic) glucose production (HGP) but have not distinguished the relative contribution of gluconeogenesis (GNG). The purpose of this study was to quantitate GNG, to determine its contribution to high HGP, and to measure insulin's suppression of GNG.We recruited 31 adult CF subjects (age, 26.2 ± 7.9 years; 12 female subjects) and quantified GNG by measuring the incorporation of 2H into the second and fifth carbons of glucose. Hepatic glucose production was measured using [6,6-2H2]glucose. Protein breakdown was measured using [1-13C]leucine. Data were compared with that from 11 healthy volunteers (age, 27.5 ± 7.0 years) who underwent both GNG and clamp studies. Thirteen CF subjects and all controls had a hyperinsulinemic euglycemic clamp during measures of GNG. Other measures included glucose tolerance and glucagon and cortisol levels.Rate of GNG was higher in CF subjects than controls and comprised a greater percentage of fasting HGP (GNG as percent of HGP: CF = 68%; controls = 44%; P = 0.034). Suppression of GNG by insulin was significantly lower in CF than in controls and was lower in CF subjects with abnormal glucose tolerance than in those with normal glucose tolerance. Gluconeogenesis correlated with protein breakdown.These studies suggest that high HGP in CF is mostly from elevated rates of GNG and that resistance to insulin's suppression of GNG may contribute to abnormal glucose tolerance in CF.


2018 ◽  
Vol 9 (9) ◽  
pp. 4926-4935 ◽  
Author(s):  
Fanxing Xu ◽  
Jing Yang ◽  
Hiroko Negishi ◽  
Yue Sun ◽  
Dahong Li ◽  
...  

Silibinin has the potential to decrease the hepatic glucose production by triggering the gut–brain–liver axis in diabetic rats.


2019 ◽  
Vol 10 ◽  
Author(s):  
Chellakkan S. Blesson ◽  
Amy Schutt ◽  
Shaji Chacko ◽  
Juan C. Marini ◽  
Pretty Rose Mathew ◽  
...  

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