Effects of alternate-day fasting on high-fat diet-induced insulin resistance in rat skeletal muscle

Kazuhiko Higashida, Eri Takai, Mitsuru Higuchi, Shin Terada

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Aims The purpose of this study was to investigate the effects of alternate-day fasting (ADF) on insulin-stimulated glucose transport activity in skeletal muscle in rats fed a high-fat diet. Main methods Male Wistar rats were placed on a high-fat diet (n = 24) or standard chow diet (Chow, n = 12) for 10 weeks. Rats fed the high-fat diet were separated into two groups after 4 weeks. One group was subjected to ADF for the subsequent 6 weeks (HF-ADF, n = 12), and the other group was maintained on an ad libitum diet (HF-AL, n = 12). After the 10-week dietary intervention, measurements of insulin-stimulated glucose uptake and insulin tolerance test (ITT) were performed. Key findings Whereas the total intra-abdominal fat mass in the HF-AL group was significantly higher than in the Chow and HF-ADF groups, there was no significant difference between the Chow and HF-ADF groups. However, insulin-stimulated glucose uptake in skeletal muscles was significantly lower in both high-fat fed groups than in the Chow group. Muscle GLUT-4 protein content in HF-AL is significantly lower (~ 30%) than in Chow, and further reduction (~ 42%) was observed in the HF-ADF group rats. The HF-ADF and HF-AL group rats had less reduction in glycemia than did the Chow group rats during ITT. Significance ADF was unable to eliminate high-fat diet-induced muscle insulin resistance, despite a substantial decrease in total intra-abdominal fat mass. This might have resulted from a reduction in GLUT-4 protein in both HF-AL and HF-ADF rats compared to the Chow group.

Original languageEnglish
Pages (from-to)208-213
Number of pages6
JournalLife Sciences
Volume93
Issue number5-6
DOIs
Publication statusPublished - 2013 Aug 14

Fingerprint

High Fat Diet
Nutrition
Muscle
Insulin Resistance
Rats
Fasting
Skeletal Muscle
Fats
Insulin
Glucose Transporter Type 4
Glucose
Intra-Abdominal Fat
Diet
Muscle Proteins
Wistar Rats
Muscles

Keywords

  • Alternate-day fasting
  • GLUT-4
  • Insulin resistance
  • Intra-abdominal fat
  • Rat
  • Skeletal muscle

ASJC Scopus subject areas

  • Pharmacology, Toxicology and Pharmaceutics(all)
  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Effects of alternate-day fasting on high-fat diet-induced insulin resistance in rat skeletal muscle. / Higashida, Kazuhiko; Takai, Eri; Higuchi, Mitsuru; Terada, Shin.

In: Life Sciences, Vol. 93, No. 5-6, 14.08.2013, p. 208-213.

Research output: Contribution to journalArticle

Higashida, Kazuhiko ; Takai, Eri ; Higuchi, Mitsuru ; Terada, Shin. / Effects of alternate-day fasting on high-fat diet-induced insulin resistance in rat skeletal muscle. In: Life Sciences. 2013 ; Vol. 93, No. 5-6. pp. 208-213.
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