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Plasma membrane content of insulin‐regulated glucose transporter in skeletal muscle of the male Otsuka Long‐Evans Tokushima Fatty rat, a model of non‐insulin‐dependent diabetes mellitus
Author(s) -
Sato Takashi,
Man Zhi-Wei,
Toide Kiyotaka,
Asahi Yoshihiko
Publication year - 1997
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/s0014-5793(97)00369-4
Subject(s) - medicine , endocrinology , diabetes mellitus , glucose transporter , insulin , skeletal muscle , transporter , chemistry , biochemistry , gene
The male Otsuka Long‐Evans Tokushima Fatty (OLETF) rat shows insulin resistance in skeletal muscle and visceral obesity. To obtain information on the mechanism of the insulin resistance in the diabetic rats, we examined the content of insulin‐regulated glucose transporter (GLUT4) in skeletal muscles. The results indicate that the total content of the transporter is significantly decreased ( P <0.05) in muscles of the diabetic rats. Plasma membrane content of the GLUT4 protein in muscles of the diabetic rats was increased in the basal state as compared to control rats. Hyperinsulinemic clamps increased GLUT4 levels in the plasma membrane of control rats but failed to do so in the diabetic rats. The distribution of GLUT4 in OLETF rat is reminiscent of the characteristics of human non‐insulin‐dependent diabetes mellitus.