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however, others have reported that action potential alterations induced by LCACs persist with metabolic blockade ( Na + -Handling Na + -handling is the primary determinant of cardiomyocyte excitability ( + channels, which determines the action potential V max and APA and initiates downstream Ca 2+ -handling for contraction ( + /Ca 2+ exchanger (NCX1) contributes to cytosolic Ca 2+ clearance in diastole, while the ubiquitous Na + /K + -ATPase (NKA) energetically maintains the stable cardiac RMP ( + -handling, centring around an increase in intracellular Na + concentration ( Inward Na + current and Na + /Ca 2+ exchange LCAC superfusion of rodent myocytes induces a dose-dependent inhibition of the early inward Na + current (I Na ), accounting for LCAC-mediated reductions in action potential V max and APA ( + current (I Na(L ) ) that exhibits a markedly prolonged channel inactivation period and drives an increase in intracellular Na + concentration ( Na(L) has been found to occur spontaneously within 2 min of LCAC exposure and to activate a secondary transient inward current (I ti ) ( 2+ chelator) or extracellular NiCl 2 (NCX1 inhibitor) application revealed that this I ti is dependent on intracellular Ca 2+ and sarcolemma Na + /Ca 2+ -exchange

The American Journal of Drug and Alcohol Abuse, 43 , 366376

This process is vital for the proper functioning of muscles, but also the heart

Berberine directly affects the gut microbiota to promote intestinal farnesoid X receptor activation