Carnosine Ameliorates Stress-Induced Glucose Metabolism Disorder in Restrained Mice

DOI Web Site 被引用文献1件 参考文献97件
  • Tsoi Bun
    Institute of Traditional Chinese Medicine and Natural Products, Jinan University, China BRAND’S Health Foundation Health Science Research Centre of Jinan University, Jinan University, China
  • He Rong-Rong
    Institute of Traditional Chinese Medicine and Natural Products, Jinan University, China BRAND’S Health Foundation Health Science Research Centre of Jinan University, Jinan University, China
  • Yang Dong-Hui
    Institute of Traditional Chinese Medicine and Natural Products, Jinan University, China
  • Li Yi-Fang
    Institute of Traditional Chinese Medicine and Natural Products, Jinan University, China
  • Li Xiao-Di
    Institute of Traditional Chinese Medicine and Natural Products, Jinan University, China
  • Li Wei-Xi
    Institute of Traditional Chinese Medicine and Natural Products, Jinan University, China
  • Abe Keiichi
    BRAND’S Centre for Health and Nutritional Sciences, Singapore
  • Kurihara Hiroshi
    Institute of Traditional Chinese Medicine and Natural Products, Jinan University, China BRAND’S Health Foundation Health Science Research Centre of Jinan University, Jinan University, China

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Carnosine is a natural dipeptide that has shown multiple benefits in the treatment of various diseases. This study investigated the ameliorative effects of carnosine on glucose metabolism in restraint-stressed mice. Our results showed that restraint stress could significantly influence glucose metabolism, as reflected by lowered glucose tolerance, hepatic and muscle glycogen content, and increased plasma corticosterone concentration in mice. Oral administration of carnosine (150 and 300 mg/kg) not only reverted stress-induced decline in glucose tolerance and glycogen content in liver and muscle, but also reduced plasma corticosterone level. Carnosine has also significantly suppressed mRNA expression of glucose-6-phosphatase, while elevating glycogen synthase 2, glucokinase and glucose transporter 2 expressions in the liver. The obtained results demonstrated the harmful effects induced by restraint stress, while proving that carnosine could ameliorate stress-induced glucose metabolism disturbance. It is presumable that carnosine exerts its anti-stress effects by indirectly affecting the histaminergic neuron system, modulating the stress-activated hypothalamic–pituitary–adrenal axis and improving glucose metabolism through regulation of the enzymes in the glucose metabolic pathways.

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