Adenosine is a byproduct of cellular metabolism, so the more active and alert we are during the day, the more adenosine builds up in the brain. Exercise, for example, can increase brain adenosine levels and promote sleep through stimulation of adenosine receptors. During sleep, adenosine is ...
Background Haemodynamic response to adenosine infusion during CMR stress perfusion continues to be used as surrogate to determine adequacy of hyperaemia in clinical setting. Our aim was to determine the proportion of patients who achieve pre-specified adequate response to adenosine (increase in heart ...
Myocardial adenosine production increases transiently during the onset of catecholamine stimulation; however, there is conflicting evidence regarding whether cytosolic adenosine concentrations are increased during sustained steady-state stimulation. If cytosolic adenosine is not elevated during steady-state stimulati...
How do cells maintain homeostasis without using energy? How does adenosine build up? How does aerobic exercise affect the heart? How does the cardiovascular system work in relation to energy metabolism? How do catabolic and anabolic pathways work together? How do fatigued human muscle cells repay ...
Cyclic adenosine monophosphate (cAMP) is widely present in organisms, it is a signaling molecule. As a second messenger, it plays a crucial role in cellular signal transduction processes. It transmits external stimuli within cells’ information, and biological effects are triggered then. It mainly ...
It's a by-product of glycolysis. Typically, your body uses oxygen to create adenosine triphosphate (ATP), a primary energy source. When oxygen levels are low, the body looks to another process to create ATP called the glycolytic system. This system leads to glycolysis, which produces pyruvate...
How does adenosine build up? Are degradative reactions catabolic? When healthy athletes engage in vigorous exercise, what happens to their glycogen? How does the human body create heat? What is the relationship between EPOC and body temperature when post exercise?
Bardenheuer H, Schrader J (1986) Supply-to-demand ratio for oxygen determines formation of adenosine by the heart. Am J Physiol 250: H173-H180 Google Scholar Chilian WM, Ackell PH (1988) Transmural differences in sympathetic coronary constriction during exercise in the presence of coronary st...
How does adenosine build up? Difference between aerobic and anaerobic respiration? Does cortisol increase anabolic or catabolic? If muscles prefer fatty acids for metabolism, what would happen if the diet contained no fat? Is clenbuterol anabolic or catabolic?
The transplanted, denervated heart has been shown to be supersensitive to the effects of adenosine (16) which can suppress sinus node automaticity and AV node conduction. The role of adenosine in perioperative bradycardia is supported by studies showing improvement in heart rates using adenosine ...