Peptides are linear chains linked by chemical bonds of the amide type is called amino peptide bond. Thus, the amino acids to form peptides will linking together in chains of variable length and sequence.
They can refer to any party hydrolysed protein fragments protein or peptide hormones and related compounds. A large difference between steroid and peptide hormones are steroid hormones have some oral activity, to the extent that can be active after they are taken orally. However, many peptide hormones are digested in the same way that proteins. They are broken down into amino acids in the digestive system, which means that they no longer have the bioactivity of his parents compound. Therefore, Member States may require administration by injection.
Among Peptide hormones are a group of substances that are able to increase the release of growth hormone. One of these hormones is growth hormone releasing hormone (GHRH). This is a hormone that is produced in the hypothalamus of the brain. This hormone binds to the receptor hormone growth hormone to stimulate the release of growth hormone. In recent years, pharmaceutical companies have developed synthetic peptide hormones known as secretagogues, which also stimulate the release of HGH.