Neuropeptide Y

Neuropeptide Y (NPY) is a 36-amino acid neuropeptide that acts as a neurotransmitter in the brain and in the autonomic nervous system of humans; slight variations of the peptide are found in many other animals. In the autonomic system it is mainly produced by neurons of the sympathetic nervous system and serves as a strong vasoconstrictor and also causes growth of fat tissue. In the brain it is produced in various locations including the hypothalamus, and is thought to have several functions, including: increasing food intake and storage of energy as fat, reducing anxiety and stress, reducing pain perception, affecting the circadian rhythm, reducing voluntary alcohol intake, lowering blood pressure and controlling epileptic seizures.

Read more about Neuropeptide Y:  Discovery, The Role of NPY in Food Intake, The Role of NPY in Obesity, The Role of NPY in Anorexia Nervosa, Correlation With Stress and Diet, Alcoholism, Receptors

Other articles related to "neuropeptide y":

Neuropeptide Y - Receptors
... The receptor protein that NPY operates on is a G protein-coupled receptor in the rhodopsin like GPCR family ... These receptors are metabotropic, causing metabolic changes in the target cell rather than directly opening ion channels ...
Stress (biology) - Neurochemistry - Neuropeptide Y
... Neuropeptide Y is a protein that is synthesized in the hypothalamus and acts as a chemical messenger in the brain ... but more recent findings have implicated Neuropeptide Y in anxiety and stress, specifically, stress resiliency ...