
Neuropeptides are small protein-like molecules (peptides) used by neurons to communicate with each other. They are neuronal signaling molecules that influence the activity of the brain in specific ways. Different neuropeptides are involved in a wide range of brain functions, including analgesia, reward, food intake, metabolism, reproduction, socia...
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http://en.wikipedia.org/wiki/Neuropeptide

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Found on
http://www.britannica.com/eb/a-z/n/29

A member of a class of protein-like molecules made in the brain. Neuropeptides consist of short chains of amino acids, with some functioning as neurotransmitters and some functioning as hormones.
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http://www.cancer.gov/dictionary?expand=N

<biochemistry> Peptides with direct synaptic effects (peptide neurotransmitters) or indirect modulatory effects on the nervous system (peptide neuromodulators). ... (18 Nov 1997) ...
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http://www.encyclo.co.uk/local/20973

(noor″o-pep´tīd) any of several types of molecules found in brain tissue, composed of short chains of amino acids; they include endorphins, enkephalins, vasopressin, and others.
Found on
http://www.encyclo.co.uk/local/21001

Type: Term Pronunciation: nū′rō-pep′tīd Definitions: 1. Any of a variety of peptides found in neural tissue, endorphins, enkephalins.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=60216

A neuropeptide is a peptide produced by neural tissue. The term is especially applied to a peptide with hormonal activity.
Found on
http://www.probertencyclopaedia.com/browse/EN.HTM

any of various short-chain peptides, as endorphins, that function as neuromodulators in the nervous system and as hormones in the endocrine system.
Found on
https://www.infoplease.com/dictionary/neuropeptide
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