Anti-prediabetic effect of 6-O-caffeoylsophorose in prediabetic rats and its stimulation of glucose uptake in L6 myotubes

Gonzalo Miyagusuku-Cruzado, Naoki Morishita, Keiichi Fukui, Norihiko Terahara, Toshiro Matsui

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Abstract

The aim of this study was to evaluate the anti-prediabetic effect of 6-O-caffeoylsophorose (CS) isolated from red vinegar in prediabetic spontaneously diabetic Torii (SDT) rats. The effect of CS on glucose uptake in rat skeletal muscle L6 myotubes was also investigated. By the supplementation of CS at a dose of 100 mg/kg/day for 8 weeks to 8-week-old SDT rats, impaired glucose tolerance in 12- and 16-week-old rats was improved in CS group, along with promoted insulin secretion. In a glucose uptake study using 2-[N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)amino]- 2-deoxyglucose (2-NBDG), > 50 μM CS stimulated uptake of 2-NBDG and translocation of glucose transporter 4 (GLUT4) to the plasma membrane. In CS-treated L6 cells, western blot analysis showed phosphorylation of AMPactivated protein kinase (AMPK) but not of Akt. Consequently, we concluded that CS showed an in vivo antiprediabetic effect, and promoted GLUT4 translocation in L6 myotubes possibly through the activation of the AMPK signaling pathway.

Original languageEnglish
Pages (from-to)449-456
Number of pages8
JournalFood Science and Technology Research
Volume23
Issue number3
DOIs
Publication statusPublished - Jan 1 2017

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Skeletal Muscle Fibers
Glucose
Rats
uptake mechanisms
glucose transporters
glucose
Facilitative Glucose Transport Proteins
rats
protein kinases
Protein Kinases
2-deoxyglucose
Phosphorylation
Glucose Intolerance
vinegars
insulin secretion
Proteins
glucose tolerance
Cell membranes
Acetic Acid
Insulin

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Food Science
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering
  • Marketing

Cite this

Anti-prediabetic effect of 6-O-caffeoylsophorose in prediabetic rats and its stimulation of glucose uptake in L6 myotubes. / Miyagusuku-Cruzado, Gonzalo; Morishita, Naoki; Fukui, Keiichi; Terahara, Norihiko; Matsui, Toshiro.

In: Food Science and Technology Research, Vol. 23, No. 3, 01.01.2017, p. 449-456.

Research output: Contribution to journalArticle

Miyagusuku-Cruzado, Gonzalo ; Morishita, Naoki ; Fukui, Keiichi ; Terahara, Norihiko ; Matsui, Toshiro. / Anti-prediabetic effect of 6-O-caffeoylsophorose in prediabetic rats and its stimulation of glucose uptake in L6 myotubes. In: Food Science and Technology Research. 2017 ; Vol. 23, No. 3. pp. 449-456.
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