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Purine and purinergic receptors in health and disease
MedComm, 2023 AbstractPurines and purinergic receptors are widely distributed throughout the human body. Purine molecules within cells play crucial roles in regulating energy metabolism and other cellular processes, while extracellular purines transmit signals through specific purinergic receptors.
Yanling Ai +6 more
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Purinergic Receptors in Ocular Inflammation [PDF]
Mediators of Inflammation, 2014 Inflammation is a complex process that implies the interaction between cells and molecular mediators, which, when not properly “tuned,” can lead to disease. When inflammation affects the eye, it can produce severe disorders affecting the superficial and internal parts of the visual organ.
Ana Guzman-Aranguez +3 more
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Painful Purinergic Receptors [PDF]
The Journal of Pharmacology and Experimental Therapeutics, 2008 Multiple P2 receptor-mediated mechanisms exist by which ATP can alter nociceptive sensitivity following tissue injury. Evidence from a variety of experimental strategies, including genetic disruption studies and the development of selective antagonists, has indicated that the activation of P2X receptor subtypes, including P2X(3), P2X(2/3), P2X(4) and ...
Diana L. Donnelly-Roberts +4 more
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Purinergic receptors in airway epithelia [PDF]
Current Opinion in Pharmacology, 2009 Nucleotides and nucleosides within the airway surface liquid regulate mucociliary clearance (MCC) activities, the primary innate defense mechanism that removes foreign particles and pathogens from airway surfaces. Nucleotide and nucleoside actions in the airways are mediated mainly by two purinergic receptor subtypes, the Gq-coupled ATP/UTP-sensing ...
Richard C. Boucher +1 more
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Purine and purinergic receptors [PDF]
Brain and Neuroscience Advances, 2018 Adenosine 5′-triphosphate acts as an extracellular signalling molecule (purinergic signalling), as well as an intracellular energy source. Adenosine 5′-triphosphate receptors have been cloned and characterised. P1 receptors are selective for adenosine, a breakdown product of adenosine 5′-triphosphate after degradation by ectonucleotidases.
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Purinergic receptors in the splanchnic circulation [PDF]
Purinergic Signalling, 2008 There is considerable evidence that purines are vasoactive molecules involved in the regulation of blood flow. Adenosine is a well known vasodilator that also acts as a modulator of the response to other vasoactive substances. Adenosine exerts its effects by interacting with adenosine receptors.
António Albino-Teixeira +2 more
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Pharmacochemistry of the platelet purinergic receptors [PDF]
Purinergic Signalling, 2011 Platelets contain at least five purinergic G protein-coupled receptors, e.g., the pro-aggregatory P2Y(1) and P2Y(12) receptors, a P2Y(14) receptor (GPR105) of unknown function, and anti-aggregatory A(2A) and A(2B) adenosine receptor (ARs), in addition to the ligand-gated P2X1 ion channel.
Kenneth A. Jacobson +3 more
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Purinergic receptors in cognitive disturbances
Neurobiology of Disease, 2023 Purinergic receptors (Rs) of the ATP/ADP, UTP/UDP (P2X, P2Y) and adenosine (A1, A2A)-sensitive classes broadly interfere with cognitive processes both under quasi normal and disease conditions. During neurodegenerative illnesses, high concentrations of ATP are released from the damaged neuronal and non-neuronal cells of the brain; then, this ATP is ...
Peter Illes +3 more
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The Role of Purinergic Receptors in the Circadian System [PDF]
International Journal of Molecular Sciences, 2020 The circadian system is an internal time-keeping system that synchronizes the behavior and physiology of an organism to the 24 h solar day. The master circadian clock, the suprachiasmatic nucleus (SCN), resides in the hypothalamus. It receives information about the environmental light/dark conditions through the eyes and orchestrates peripheral ...
Amira A.H. Ali +2 more
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Purines, Purinergic Receptors, and Cancer [PDF]
Cancer Research, 2012 Abstract Purines were long thought to be restricted to the intracellular compartment, where they are used for energy transactions, nucleic acid synthesis, and a multiplicity of biochemical reactions. However, it is now clear that both adenosine and adenosine triphosphate are (i) abundant biochemical components of the tumor ...
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