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- W2000531922 endingPage "498" @default.
- W2000531922 startingPage "461" @default.
- W2000531922 abstract "Skeletal muscles comprise the largest organ of the body with functions transcending locomotion; for example, muscles act as a glucose sink to regulate whole-body glycemic control and as an amino acid (AA) store to regulate whole-body protein metabolism. The focus of this chapter is to provide the reader understanding of the role of feeding, and the AA components thereof, in the regulation of muscle protein metabolism. During postprandial periods, efflux of muscle-AA through protein breakdown (MPB) leads to a loss of muscle proteins. However, intake of food containing dietary proteins replenishes these postabsorptive losses due to substrate replenishment and “anabolic” properties of constituent essential AA (EAA). This occurs due to increases in muscle protein synthesis (MPS) and decreases in muscle protein breakdown (MPB). Thus, feeding represents a key aspect of muscle homeostasis. This chapter will focus on key facets impacting this response. In the context of skeletal muscle, we will detail fasted and fed AA fluxes, the effect of dietary protein sources (eg, whey/casein/soy) and resulting impacts on digestion, absorption, microvascular blood flow, and muscle tissue bioavailability. We will also describe additional endocrinological effects of food intake that impacts muscle protein turnover (eg, insulin). Finally, we will detail the sensing and signaling mechanisms regulating anabolic responses to feeding in humans." @default.
- W2000531922 created "2016-06-24" @default.
- W2000531922 creator A5077156226 @default.
- W2000531922 creator A5079641573 @default.
- W2000531922 date "1990-09-01" @default.
- W2000531922 modified "2023-09-26" @default.
- W2000531922 title "4 Protein turnover and amino acid metabolism in human skeletal muscle" @default.
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