Type 2 diabetic rats on diet supplemented with chromium malate show improved glycometabolism, glycometabolism-related enzyme levels and lipid metabolism

PLoS One. 2015 May 5;10(5):e0125952. doi: 10.1371/journal.pone.0125952. eCollection 2015.

Abstract

Our previous study showed that chromium malate improved the regulation of blood glucose in mice with alloxan-induced diabetes. The present study was designed to evaluate the effect of chromium malate on glycometabolism, glycometabolism-related enzymes and lipid metabolism in type 2 diabetic rats. Our results showed that fasting blood glucose, serum insulin level, insulin resistance index and C-peptide level in the high dose group had a significant downward trend when compared with the model group, chromium picolinate group and chromium trichloride group. The hepatic glycogen, glucose-6-phosphate dehydrogenase, glucokinase, Glut4, phosphor-AMPKβ1 and Akt levels in the high dose group were significantly higher than those of the model, chromium picolinate and chromium trichloride groups. Chromium malate in a high dose group can significantly increase high density lipoprotein cholesterol level while decreasing the total cholesterol, low density lipoprotein cholesterol and triglyceride levels when compared with chromium picolinate and chromium trichloride. The serum chromium content in chromium malate and chromium picolinate group is significantly higher than that of the chromium trichloride group. The results indicated that the curative effects of chromium malate on glycometabolism, glycometabolism-related enzymes and lipid metabolism changes are better than those of chromium picolinate and chromium trichloride. Chromium malate contributes to glucose uptake and transport in order to improved glycometabolism and glycometabolism-related enzymes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Biological Transport
  • Blood Glucose
  • Body Weight
  • Chromium* / pharmacology
  • Diabetes Mellitus, Experimental
  • Diabetes Mellitus, Type 2 / enzymology
  • Diabetes Mellitus, Type 2 / metabolism*
  • Dietary Supplements*
  • Disease Models, Animal
  • Fasting
  • Gastrointestinal Microbiome / drug effects
  • Glucose / metabolism*
  • Glycogen / metabolism
  • Insulin / blood
  • Lipid Metabolism*
  • Liver / drug effects
  • Liver / metabolism
  • Liver / microbiology
  • Malates* / pharmacology
  • Male
  • Maze Learning
  • Rats

Substances

  • Blood Glucose
  • Insulin
  • Malates
  • Chromium
  • malic acid
  • Glycogen
  • Glucose

Grants and funding

This work was supported financially by Specialized Research Fund for the Natural Science Foundation of China (31271850), Graduate innovative projects in Jiangsu University (CXLX13_685).