Lipids

, 33:689

Protective effects of lemon flavonoids on oxidative stress in diabetic rats

  • Yoshiaki Miyake
  • Kanefumi Yamamoto
  • Nobuko Tsujihara
  • Toshihiko Osawa
Article

DOI: 10.1007/s11745-998-0258-y

Cite this article as:
Miyake, Y., Yamamoto, K., Tsujihara, N. et al. Lipids (1998) 33: 689. doi:10.1007/s11745-998-0258-y

Abstract

The effects of lemon flavonoids, as crude flavonoids prepared from lemon juice, were investigated in diabetic rats. The oxidative stress of eriocitrin (eriodictyol 7-O-β-rutinoside) and hesperidin (hesperetin 7-O-β-rutinoside) on streptozotocin-induced diabetic rats was investigated. Diabetic rats were given a diet which contained 0.2% crude flavonoids, 0.2% eriocitrin, and 0.2% hesperidin. After the 28-d feeding period, the concentration of the thiobarbituric acid- reactive substance in the serum, liver, and kidney of diabetic rats administered crude flavonoids, eriocitrin, and hesperidin significantly decreased as compared with that of the diabetic group. The levels of 8-hydroxydeoxyguanosine, which is exchanged from deoxyguanosine owing to oxidative stress, in the urine of diabetic rats administered eriocitrin and hesperidin significantly decreased as compared with that of the diabetic rat group. Crude flavonoids, eriocitrin, and hesperidin suppressed the oxidative stress in the diabetic rats. These results demonstrated that dietary lemon flavonoids of eriocitrin and hesperidin play a role as antioxidant in vivo.

Abbreviations

CAT

catalase

CF

crude flavonoids

GSH

reduced gluthathione

GSH-Px

glutathione peroxidase

GST

glutathione S-transferase

8-OHdG

8-hydroxydeoxyguanosine

SOD

superoxide dismutase

STZ

streptozotocin

TBARS

thiobarbituric acid-reactive substances

Copyright information

© AOCS Press 1998

Authors and Affiliations

  • Yoshiaki Miyake
    • 1
  • Kanefumi Yamamoto
    • 1
  • Nobuko Tsujihara
    • 2
  • Toshihiko Osawa
    • 3
  1. 1.Central Research Laboratory of Pokka Corporation, Ltd.AichiJapan
  2. 2.College of Nagoya Women's UniversityNagoya
  3. 3.Laboratory of Food BiodynamicsNagoya University Graduate School of Bioagricultural SciencesNagoyaJapan

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