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  • Title: Intermittent administration of brain-derived neurotrophic factor ameliorates glucose metabolism in obese diabetic mice.
    Author: Ono M, Itakura Y, Nonomura T, Nakagawa T, Nakayama C, Taiji M, Noguchi H.
    Journal: Metabolism; 2000 Jan; 49(1):129-33. PubMed ID: 10647076.
    Abstract:
    We have previously shown that brain-derived neurotrophic factor (BDNF), a member of the neurotrophin family, interacts with the endocrine system in obese diabetic mice, and systemic peripheral administration of BDNF regulates glucose metabolism in this model. Results from the present study show that the hypoglycemic effect induced by 2 weeks' daily administration of BDNF (20 mg/kg/d) to db/db mice lasts for several weeks after treatment cessation, irrespective of food reduction. On the other hand, the antidiabetic agent, metformin had no lasting effect. This duration of the BDNF hypoglycemic action prompted us to examine the efficacy of BDNF intermittent administration on glucose metabolism. BDNF administered once or twice per week (70 mg/kg/wk) to db/db mice for 3 weeks significantly reduced blood glucose concentrations and hemoglobin A(1c), (HbA(1c)) as compared with ad libitum-fed phosphate-buffered saline (PBS)-treated and pair-fed PBS-treated groups. This suggests that BDNF not only temporarily reduced blood glucose concentrations but also ameliorated systemic glucose balance in this obese diabetic mouse model during the experimental period. Our results indicate that BDNF could be a novel hypoglycemic agent with an exceptional ability to normalize glucose metabolism even with treatment as infrequently as once per week.
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