A neurohormone is any hormone secreted and released by specialized neurons. A neurohormone is carried in the bloodstream to target cells. Neurohormones act as a messenger in the communication with other parts of the body; for example, the neurohormone ADH (antidiuretic hormone) is secreted in the pituitary gland and carried to the kidney, where it promotes water reabsorption in the kidney tubules. By contrast, neurotransmitters only serve local communication and may be considered paracrine hormones.
Other neurohormones are: thyrotropin-releasing hormone (TRH), Adrenocorticotropin-releasing hormone, Gonadotropin-releasing hormone (GnRH), and Oxytocin.
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