This document discusses the role of neuropeptides and their receptors in the brain and body. It notes that:
1) Neuropeptides are produced by nerve cells in the brain and bind to receptors in the limbic system, which is involved in emotions, and the hypothalamus, which regulates homeostasis.
2) Many neuropeptides act as hormones, being produced in one part of the body and traveling to receptors elsewhere. Insulin, for example, is produced in the pancreas but also in the brain.
3) Neuropeptide receptors are found throughout the body, including in the immune system, suggesting these biochemicals play a role in modulating and directing immune cell activity.
14. Many of the neuropeptides are
hormones produced by the glands
and not by nerve cells, e.g. insulin
胰島素
15. Hormones stores in
one place of the
body and travel to its
receptors in other
parts of the body
http://micro.magnet.fsu.edu/micro/gallery/hormones/hormone.jpg
16. 夷島素
Insulin
• Insulin secreted by pancreas
• BUT—insulin also found to be made and
stored in the brain
• In amygdala and hypothalamus
17. Nodal points
• Points that receive a lot
of emotional modulation
• We have found that for
virtually all the senses for
which we know the entry
area, the spot is always a
nodal point for
neuropeptides receptors
Composed of amino acids
Found in the brain and in the gonads
Peptide produced by nerve cells in the brain and grows directly from DNA
The largest portion of information coming from the brain not by synapse by the specificity of the receptors
When a nerve cell squirts out opiate peptides, the peptides can act “miles” away at other nerve cells
Emotions and limbic
Pp.151
Cells in immune system moves! The brain cells don’t
Pp.153