Intracellular Calcium Overload and Activation of CaMKK/AMPK Signaling Are Related to the Acceleration of Muscle Glycolysis of Broiler Chickens Subjected to Acute Stress
文献类型： 外文期刊
作者： Liao, Hongju 1 ; Zhang, Lin 1 ; Li, Jiaolong 2 ; Xing, Tong 1 ; Gao, Feng 1 ;
作者机构： 1.Nanjing Agr Univ, Jiangsu Collaborat Innovat Ctr Meat Prod & Proc Qu, Coll Anim Sci & Technol,Jiangsu Provincial Key Lab, Key Lab Anim Origin Food Prod & Safety Guarantee J, Nanjing 210095, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Agri Prod Proc, Nanjing 210014, Peoples R China
关键词： acute stress; broiler chicken; glycolysis; meat quality; CaMKK; AMPK
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）
ISSN： 0021-8561
年卷期： 2023 年
页码：
收录情况： SCI
摘要： The current study investigated the effect of preslaughter transport on stress response and meat quality of broilers and explored the underlying mechanisms involved in the regulation of muscle glycolysis through calcium/calmodulin-dependent protein kinase kinase (CaMKK)/AMP-activated protein kinase (AMPK) signaling. Results suggested that transport induced stress responses of broilers and caused PSE-like syndrome of pectoralis major muscle. Preslaughter transport enhanced the mRNA expressions of glycogen phosphorylase and glucose transporters, as well as the activities of glycolytic enzymes, which accelerated the breakdown of glycolytic substrates and the accumulation of lactic acid. In addition, acute stress induced abnormal intracellular calcium homeostasis by disrupting calcium channels on the cell membrane and sarcoplasmic reticulum, which led to the activation of CaMKK and promoted AMPK phosphorylation. This study provides evidence that the intracellular calcium overload and the enhancement of CaMKK/AMPK are related to the accelerated muscle of broiler chickens to acute stress.
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