How does Fragment 176-191 work?

This short peptide derives from a human growth hormone called Fragment 176-191. In the peptide structure of the hormone, there is a small segment that seems to have biological characteristics of its own. The insulin receptor appears to need the function of at least twelve of the amino acids in the chain (ranging from 178 to 190). Antagonism of this receptor may result in insulin resistance in experimental animals. This action suggests that glucose decomposition is stimulated by the opposing end of the protein chain if the growth hormone has less harmful insulin. Glycogen synthase phosphatase in rat muscle tissue may inhibit a peptide composed of residues from Fragment 176-191 of human GH, thereby altering the quantity of active glycogen synthase in these cells. GH fragments comprising Fragment 176-191 might disrupt the regular glucose or glycogen metabolism. Even if it does not link to fat degradation, Fragment 176-191 may be responsible for decreasing fat accumulation in rats. Ghrelin resembles a growth hormone-releasing factor in its complete, 16-amino acid form (GRF). Adipose deposits in animals treated with GH- or GRF-analogs, such as this, may be reduced.

GRF and its analogs may increase pituitary gland GH release. Other hormones, such as progesterone, may also be affected. It is also possible that GRF analogs are more durable than the main GH protein. Researchers may utilize Fragment 176-191 to investigate the possible functions of GH or GRF in mechanisms such as aging and the reaction to changes in the food habits of test animals. The GH-GRF-IGF regulatory axis may also benefit from its usage. GRF targets cells outside of the pituitary in mammals. Even prenatal and postnatal growth may play a role. One of the most well-known hormones in the human body, it is a member of the peptide hormone family, including PACAP, secretin, and glucagon-like proteins. As a result, a GRF analog that is both stable and bioactive may be an effective study reagent.

As the name indicates, peptide fragment 176-191 comprises the 16 residues closest to the amino terminus of human growth hormone. As a result, it can potentially stimulate GH activity at the expense of other benefits partially. In addition, the fragment is a GRF-like compound. Consequently, it may stimulate cells in the anterior pituitary, change the concentrations of other hormones such as IGF-1, and perhaps modify glucose metabolism in certain animals. Fat metabolism and storage models might potentially benefit from GRF analogs.

Functions of Fragment 176-191

According to scientific studies on animals as test subjects, Fragment 176-191 for sale mimic fat metabolism-controlling secretions. While this may seem counterintuitive, the peptide has shown capabilities to do so without causing any adverse effects on blood sugar or cell growth. When fat metabolism is under control, it accelerates the breakdown of body fat, increases energy outflow, enhances fat oxidation, and even increases muscle growth.


Animal studies have indicated that Fragment 176-191 might theoretically associate with a slew of positive outcomes. Lipolysis, or the breakdown of fatty tissue or body fat, is the first possible benefit associated with using this peptide. According to research conducted on animals, the inclusion of the peptide increases lipolysis by 12.5% when compared to the absence of the peptide.

As a result, fat burning becomes substantially more efficient.

Experts also showed that the increased lipolysis caused by Fragment 176-191 did not have any detrimental side effects, distinguishing it from other peptides with comparable functions.