OXA (17-33) – Neuroscience Peptides

Orexin-A (also known as hypocretin-1) is a hypothalamic neuropeptide that regulates feeding behaviour, reward processes, cognition, the sleep-wake cycle and stress. Orexin-A is involved in stress induced mental illness such as major depressive disorder and anxiety disorders and may therefore be a potential target for treatment of these conditions. Orexins are excitatory neuropeptides generated from the prepro-orexin precursor that is exclusively localised in cells of the lateral and posterior hypothalamic region. Orexins are also widely expressed in human and mammalian retinas, such as bipolar cells, amacrine cells and ganglion cells. Orexin-A activates the orphan G-protein-coupled orexin receptor, type 1 (OX1R) and 2 (OX2R). There are approximately 10,000-20,000 orexinergic neurons in the human brain.

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