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Adenosine is a neuromodulator that is responsible for motor function, mood, memory, and learning. Its main purpose is the coordination of responses to different neurotransmitters. [5] Adenosine plays many important roles in biological systems, for example in the central nervous-, cardiovascular-, hepatic-, renal- and respiratory system.
Abundant extracellular adenosine can then bind to the A2A receptor resulting in a G s-protein coupled response, resulting in the accumulation of intracellular cAMP, which functions primarily through protein kinase A to upregulate inhibitory cytokines such as transforming growth factor-beta (TGF-β) and inhibitory receptors (i.e., PD-1). [56]
An adenosine reuptake inhibitor (AdoRI) is a type of drug which acts as a reuptake inhibitor for the purine nucleoside and neurotransmitter adenosine by blocking the action of one or more of the equilibrative nucleoside transporters (ENTs).
Caffeine keeps you awake by blocking adenosine receptors. Each type of adenosine receptor has different functions, although with some overlap. [3] For instance, both A 1 receptors and A 2A play roles in the heart, regulating myocardial oxygen consumption and coronary blood flow, while the A 2A receptor also has broader anti-inflammatory effects throughout the body. [4]
Altered brain structure in chemotherapy patients provides explanation for cognitive impairment. [12] Another study in 2007 investigated the differences in brain structure between two adult, monozygotic twin females. One underwent chemotherapy treatment for breast cancer, while the other did not have cancer and was not treated with chemotherapy.
Adverse effects associated with adenosine administration are primarily due to its activation of adenosine receptors on vascular tissue, resulting in vasodilation. Side effects of adenosine include skin flushing, lightheadedness, nausea, sweating, nervousness, numbness, and a sense of impending doom. These effects are typically very short-lived ...