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The GABAA receptor (GABAAR) is an ionotropic receptor and ligand-gated ion channel. Its endogenous ligand is γ-aminobutyric acid (GABA), the major inhibitory neurotransmitter in the central nervous system. Accurate regulation of GABAergic transmission through appropriate developmental processes, specificity to neural cell types, and responsiveness to activity is crucial for the proper functioning of nearly all aspects of the central nervous system (CNS). Upon opening, the GABAA receptor on the postsynaptic cell is selectively permeable to chloride ions (Cl−) and, to a lesser extent, bicarbonate ions (HCO3−).
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Neuromedin S is a 36-amino acid neuropeptide found in the brain of humans and other mammals. It is produced in the suprachiasmatic nucleus of the hypothalamus and is related to neuromedin U. It is thought to be involved in regulation of circadian rhythm and also has appetite suppressant effects, as well as regulating the release of several other peptide hormones including vasopressin, luteinizing hormone, and oxytocin.
LY-487,379 is a drug used in scientific research that acts as a selective positive allosteric modulator for the metabotropic glutamate receptor group II subtype mGluR2. It is used to study the structure and function of this receptor subtype, and LY-487,379 along with various other mGluR2/3 agonists and positive modulators are being investigated as possible antipsychotic and anxiolytic drugs.
References
- ↑ Brighton PJ, Szekeres PG, Willars GB (June 2004). "Neuromedin U and its receptors: structure, function, and physiological roles". Pharmacological Reviews . 56 (2): 231–48. doi:10.1124/pr.56.2.3. PMID 15169928. S2CID 884735.
- ↑ Mitchell J, Maguire J, Davenport A (June 2009). "Emerging pharmacology and physiology of neuromedin U and the structurally related peptide neuromedin S". British Journal of Pharmacology. 158 (1): 87–103. doi:10.1111/j.1476-5381.2009.00252.x. PMC 2795236 . PMID 19519756.
- ↑ Peier A, Kosinski J, Cox-York K, Qian Y, Desai K, Feng Y, Trivedi P, Hastings N, Marsh DJ (July 2009). "The antiobesity effects of centrally administered neuromedin U and neuromedin S are mediated predominantly by the neuromedin U receptor 2 (NMUR2)". Endocrinology. 150 (7): 3101–9. doi:10.1210/en.2008-1772. PMC 2703546 . PMID 19324999.
- ↑ Meng T, Su HR, Binkert C, Fischli W, Zhou L, Shen JK, Wang MW (April 2008). "Identification of non-peptidic neuromedin U receptor modulators by a robust homogeneous screening assay". Acta Pharmacologica Sinica. 29 (4): 517–27. doi: 10.1111/j.1745-7254.2008.00769.x . PMID 18358099.
- ↑ Kajino M, Hinuma S, Tarui N, Yamashita T, Nakayama Y. Receptor regulators. European Patent EP 1559428 A1. Published 03.08.2005
- ↑ Liu JJ, Payza K, Huang J, Liu R, Chen T, Coupal M, Laird JM, Cao CQ, Butterworth J, Lapointe S, Bayrakdarian M, Trivedi S, Bostwick JR (July 2009). "Discovery and pharmacological characterization of a small-molecule antagonist at neuromedin U receptor NMUR2". The Journal of Pharmacology and Experimental Therapeutics. 330 (1): 268–75. doi:10.1124/jpet.109.152967. PMID 19369576. S2CID 7366636.
