Min Wen, Qin Xu, Jinfeng Xie, Rong Wu, Xiaomei Chen, Nianlian Wen, Sheng Huang
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Therapeutic potential of P2X7 receptor in retinal diseases.
Retinal diseases affect the health of millions of people worldwide and activated P2X7 receptors (P2X7Rs) are associated with the pathophysiology of a variety of retina-related diseases, including diabetic retinopathy, age-related macular degeneration, and glaucoma. Increasing evidence indicated that P2X7R is over-activated in retinopathy and is involved in the occurrence and development of diabetic retinopathy. Purine vasotoxicity caused by over-activation of P2X7R can lead to decreased retinal blood flow and vascular dysfunction and activation of P2X7R can lead to the production of a large number of inflammatory factors, causing local inflammatory cells to infiltrate and form a vascular microenvironment, thus constituting the pathophysiological basis for the occurrence and development of retinopathy. A variety of P2X7R antagonists have been studied in clinical trials as potential treatments for retinal diseases. However, currently no P2X7R antagonists has been approved for retina diseases. In this review, we mainly focus on recent progress on the involvement of P2X7R in retinal diseases and its therapeutic potential in the future.
期刊介绍：
Nucleotides and nucleosides are primitive biological molecules that were utilized early in evolution both as intracellular energy sources and as extracellular signalling molecules. ATP was first identified as a neurotransmitter and later as a co-transmitter with all the established neurotransmitters in both peripheral and central nervous systems. Four subtypes of P1 (adenosine) receptors, 7 subtypes of P2X ion channel receptors and 8 subtypes of P2Y G protein-coupled receptors have currently been identified. Since P2 receptors were first cloned in the early 1990’s, there is clear evidence for the widespread distribution of both P1 and P2 receptor subtypes in neuronal and non-neuronal cells, including glial, immune, bone, muscle, endothelial, epithelial and endocrine cells.
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