Lipids

, 41:347

Effect of diacylglycerol on the development of impaired glucose tolerance in sucrose-fed rats

Authors

    • Biological Science LaboratoriesKao Corporation
  • Noriko Osaki
    • Biological Science LaboratoriesKao Corporation
  • Noboru Matsuo
    • Biological Science LaboratoriesKao Corporation
  • Ichiro Tokimitsu
    • Biological Science LaboratoriesKao Corporation
Articles

DOI: 10.1007/s11745-006-5105-7

Cite this article as:
Meguro, S., Osaki, N., Matsuo, N. et al. Lipids (2006) 41: 347. doi:10.1007/s11745-006-5105-7

Abstract

The effects of DAG oil and TAG oil on impaired glucose tolerance in rats that were fed a diet containing high levels of sucrose were compared. Male Wistar rats (8 wk old and 32 wk old) were fed either high-sucrose (57.5% sucrose w/w) or control diets containing either 10% (w/w) DAG or TAG oil with a similar FA composition for 48 wk in 8-wk-old rats and for 24 wk in 32-wk-old rats. Plasma lipids, the size of the islets of Langerhans, and insulin, glucose, and adipocytokine levels were measured. An oral glucose tolerance test (OGTT) was carried out during the study period. For rats in both age groups that were fed a high-sucrose diet, the DAG oil group had lower plasma glucose and insulin response in an OGTT, and lower homeostasis model assessment-R levels, than the TAG oil group. Furthermore, in 8-wk-old rats that were fed a high-sucrose diet, the DAG oil group accumulated less visceral fat and showed decreases of plasma adiponectin and suppressed increases of plasma insulin, leptin, and the size of islet of Langerhans compared with the TAG oil group. No difference in the OGTT was found between the DAG and TAG oil groups in either age group of rats fed a control diet. In conclusion, these results suggest that DAG oil ingestion prevents the high-sucrose-diet-induced development of impaired glucose tolerance compared with TAG oil ingestion.

Abbreviations

EIA

enzyme-linked immunosorbent assay

HbA1c

glycohemoglobin A1c

HOMA-R

homeostasis model assessment-R

NEFA

nonesterified FA

OGTT

oral glucose tolerance test

OLETF

Otsuka Long-Evans Tokushima Fatty

SD

Sprague-Dawley

Copyright information

© AOCS Press 2006