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Lewis 2022 Methods Mol Biol

From Bioblast
Publications in the MiPMap
Lewis MT, Levitsky Y, Bazil JN, Wiseman RW (2022) Measuring mitochondrial function: from organelle to organism. Methods Mol Biol 2022;2497:141-172. doi: 10.1007/978-1-0716-2309-1_10

Β» PMID: 35771441

Lewis MT, Levitsky Y, Bazil JN, Wiseman RW (2022) Methods Mol Biol

Abstract: Mitochondrial energy production is crucial for normal daily activities and maintenance of life. Herein, the logic and execution of two main classes of measurements are outlined to delineate mitochondrial function: ATP production and oxygen consumption. Aerobic ATP production is quantified by phosphorus magnetic resonance spectroscopy (31PMRS) in vivo in both human subjects and animal models using the same protocols and maintaining the same primary assumptions. Mitochondrial oxygen consumption is quantified by oxygen polarography and applied in isolated mitochondria, cultured cells, and permeabilized fibers derived from human or animal tissue biopsies. Traditionally, mitochondrial functional measures focus on maximal oxidative capacity-a flux rate that is rarely, if ever, observed outside of experimental conditions. Perhaps more physiologically relevant, both measurement classes herein focus on one principal design paradigm; submaximal mitochondrial fluxes generated by graded levels of ADP to map the function for ADP sensitivity. We propose this function defines the bioenergetic role that mitochondria fill within the myoplasm to sense and match ATP demands. Any deficit in this vital role for ATP homeostasis leads to symptoms often seen in cardiovascular and cardiopulmonary diseases, diabetes, and metabolic syndrome.

β€’ Bioblast editor: Gnaiger E


Labels: MiParea: Respiration 


Organism: Human  Tissue;cell: Skeletal muscle  Preparation: Intact organism, Isolated mitochondria 

Regulation: ADP  Coupling state: OXPHOS