Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Neuropeptide Y shopping experience:

1. Compare - without doubt the biggest advantage that the Neuropeptide Y offers shoppers today is the ability to compare thousands of Neuropeptide Y at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.

2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about

3. Testimonials - don't know anybody that has bought a Neuropeptide Y? Wrong! If the Neuropeptide Y is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.

4. Questions - Got a question about Neuropeptide Y then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....

5. Reputation - Never heard of the company selling Neuropeptide Y? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Neuropeptide Y and build up a picture of their reputation for sales, returns, customer service, delivery etc.

6. Returns - still worried that even after all of the above your Neuropeptide Y wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.

7. Feedback - happy with your Neuropeptide Y then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.

8. Security - check for the yellow padlock on the Neuropeptide Y site before you buy, and the s after http:/ /i.e. https:// = a secure site

9. Contact - got a question about Neuropeptide Y, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.

10. Payment - ready to pay for your Neuropeptide Y, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.

{{protein| Name = neuropeptide Y| caption = Structure of Neuropeptide Y| image = neuropeptide_Y.png| width =| HGNCid = 7955| Symbol = NPY| AltSymbols =| EntrezGene = 4852| OMIM = 162640| RefSeq = NM_000905| UniProt = P01303| PDB =| ECnumber =| Chromosome = 7| Arm = p| Band = 15.3| LocusSupplementaryData =-->Neuropeptide Y (NPY) is a 36 amino acid peptide neurotransmitter found in the brain and autonomic nervous system. It augments the vasoconstrictor effects of noradrenergic neurons.

NPY has been associated with a number of physiologic processes in the brain, including the regulation of energy balance, memory and learning, and epilepsy.

Role in regulation of feeding NPY's role in regulating energy balance is well known. It forms part of the "lipostat" system along with leptin and corticotropin-releasing hormone (CRH). High NPY levels in the cerebrospinal fluid are associated with high food intake and decreased physical activity. Leptin, produced by adipocytes in response to high fat levels, is detected by the arcuate nucleus in the hypothalamus. Increased arcuate nucleus activity acts on the paraventricular nucleus to inhibit the production of NPY at that site, thus reducing feeding behaviour. Arcuate nucleus activity also stimulates the release of CRH which further decreases feeding and increases energy expenditure.

Correlation with stress and diet Studies of mouse and monkeys show that repeated Stress (medicine)— and a high-fat, high-sugar diet— stimulate the release of neuropeptide Y, causing fat to build up in the abdomen. Researchers believe that by manipulating levels of the appetite hormone, they could make fat melt from areas where it was not desired and accumulate at sites where it is needed.

Higher levels of NPY may be associated with Psychological_resilience against and recovery from posttraumatic stress disorder.

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. The protein contains seven membrane spanning domains and five subtypes have been identified in mammals, four of which are functional in humans. Subtypes Y1 and Y5 have known roles in the stimulation of feeding while Y2 and Y4 seem to have roles in appetite inhibition (satiety). Some of these receptors are among the most highly conserved neuropeptide receptors.

See also

• Antianalgesia
• Neuropeptide

References

External links

• EMBL receptor database entry

{{protein| Name = neuropeptide Y| caption = Structure of Neuropeptide Y| image = neuropeptide_Y.png| width =| HGNCid = 7955| Symbol = NPY| AltSymbols =| EntrezGene = 4852| OMIM = 162640| RefSeq = NM_000905| UniProt = P01303| PDB =| ECnumber =| Chromosome = 7| Arm = p| Band = 15.3| LocusSupplementaryData =-->Neuropeptide Y (NPY) is a 36 amino acid peptide neurotransmitter found in the brain and autonomic nervous system. It augments the vasoconstrictor effects of noradrenergic neurons.

NPY has been associated with a number of physiologic processes in the brain, including the regulation of energy balance, memory and learning, and epilepsy.

Role in regulation of feeding NPY's role in regulating energy balance is well known. It forms part of the "lipostat" system along with leptin and corticotropin-releasing hormone (CRH). High NPY levels in the cerebrospinal fluid are associated with high food intake and decreased physical activity. Leptin, produced by adipocytes in response to high fat levels, is detected by the arcuate nucleus in the hypothalamus. Increased arcuate nucleus activity acts on the paraventricular nucleus to inhibit the production of NPY at that site, thus reducing feeding behaviour. Arcuate nucleus activity also stimulates the release of CRH which further decreases feeding and increases energy expenditure.

Correlation with stress and diet Studies of mouse and monkeys show that repeated Stress (medicine)— and a high-fat, high-sugar diet— stimulate the release of neuropeptide Y, causing fat to build up in the abdomen. Researchers believe that by manipulating levels of the appetite hormone, they could make fat melt from areas where it was not desired and accumulate at sites where it is needed.

Higher levels of NPY may be associated with Psychological_resilience against and recovery from posttraumatic stress disorder.

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. The protein contains seven membrane spanning domains and five subtypes have been identified in mammals, four of which are functional in humans. Subtypes Y1 and Y5 have known roles in the stimulation of feeding while Y2 and Y4 seem to have roles in appetite inhibition (satiety). Some of these receptors are among the most highly conserved neuropeptide receptors.

See also

• Antianalgesia
• Neuropeptide

References

External links

• EMBL receptor database entry

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We used in situ hybridization techniques to study the distribution of neurones synthesizing somatostatin mRNA and neuropeptide Y mRNA in the hilar region of the hippocampal ...

Neuropeptide Y - Wikipedia, the free encyclopedia
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Neuropeptide Y
Neuropeptide Y (NPY) is the most abundant neuropeptide in the brain. It is a member of a family of proteins that include pancreatic polypeptide, peptide YY and seminalplasmin.

Neuropeptide Y receptor signature
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Plasma neuropeptide-Y levels, monoamine metabolism, electrolyte ...
Introduction: This study was conducted against a background of the following four points: a) increased drinking behavior in children with attention-deficit hyperactivity disorder ...

Neuropeptide Y 13-36 (porcine) | Peptides (Neuropeptides) | Y2 ...
Neuropeptide Y 13-36 (porcine) available from Tocris Bioscience | Peptides (Neuropeptides) | Y2 receptor agonist

Definition: neuropeptide y from Online Medical Dictionary
The Online Medical Dictionary is a searchable dictionary of definitions from medicine, science and technology.