IGF-1 is basically a polypeptide hormone that has the same some of the same molecular properties as insulin. IGF dose actually stand for insulin-like growth factor. IGF-1 is mainly responsible for long bone growth in children and it also affects muscle growth and repair of adults. Long R3 IGF-1 is a more potent version of IGF-1. It’s chemically altered i like to think “enhanced” to prevent deactivation by IGF-1 binding proteins in the bloodstream. This results in a longer half-life of 20-30 hours instead of 20 min… So that means a far more effective version than the short chain we we re perhaps more familiar with.
IGF-1 LR3 is the primary protein involved in responses of cells to growth hormone (GH): that is, IGF-I is produced in response to GH and then induces cellular activities. One such example is muscle growth or hyperplasia. This compound also makes the human body more sensitive to insulin. It is the most potent growth factor found in the human body. IGF-1 causes muscle cell hyperplasia, which is an actual splitting and forming of new muscle cells.
IGF1 LR3 is also known as Long R3 IGF-1 or Insulin-Like Growth Factor-I Long Arg3. This is a human recombinant, single, non-glycosylated, polypeptide chain containing 83 amino acids and having a molecular mass of 9200 Daltons. IGF1 mediates many of the growth-promoting effects of growth hormone (GH; MIM 139250).
Even though in bodybuilding circles we don’t hear much about Sermorelin, this doesn’t mean that this peptide does not have its uses. In fact, anti-aging and hormone replacement clinics have been prescribing it for years because it works as a clean GHRH. The problem for the bodybuilder or athlete is that it has a very short half-life of about ten (10) minutes.
HGH Frag 176-191 is a fragment of the HGH peptide. Scientists found that if they truncated the peptide at the C terminal region they could isolate the fat loss attributes associated with HGH. Taking this fragment from HGH, including the peptide bonds from 176-191, they found they had developed a peptide that regulated fat loss 12.5 times better than regular HGH.
PEGylation is the act of attaching a Polyethylene glycol (PEG) structure to another larger molecule (in this case, MGF). The PEG acts as a protective coating and the theory here is that this will allow the MGF to be carried through the blood stream without being broken down. Neurological research has shown that utilizing PEGylated MGF resulted in a longer more stable acting version of the MGF peptide in serum/blood.
Mechano Growth Factor (MGF) also known as IGF-1Ec is a growth factor/repair factor that is derived from exercised or damaged muscle tissue. It’s called MGF as IGF-IEa is a bit of a mouthful and harder to identify amongst the other IGF variants.