Melatonin (GPCR-A9) is considered an important hormonal output of the circadian system mediating the entrainment of the circadian rhythms of several biological functions[1]. Besides, it is involved in numerous physiological processes including blood pressure regulation, oncogenesis, retinal physiology, seasonal reproduction, ovarian physiology, immune function and most recently in inducing osteoblast differentiation. It interacts at either of the two melatonin receptor subtypes (MT1 and MT2) present in humans and other mammals[2]. The MT1 subtype is present in high concentrations in the pituitary gland and the suprachiasmatic nuclei (SCN) of the hypothalamus, whereas the MT2 subtype is mainly present in the retina.

[1] Melatonin: therapeutic and clinical utilization. Altun A, Ugur-Altun B. Int J Clin Pract. 2007, 61,,835-845.
[2] Melatonin receptors step into the light: cloning and classification of subtypes. Reppert S.M., Weaver D.R., Godson C. Trends Pharmacol Sci. 1996, 17,100-102.

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Axon ID Name Description From price
1492 Agomelatine Melatonin agonist; 5-HT2C antagonist €75.00
1335 AH 001 Melatonin agonist €80.00
1336 AH 002 Melatonin agonist €80.00
1351 DH 97 Melatonin (MT2) antagonist €95.00
1350 Luzindole Melatonin antagonist €95.00

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