insulin like peptide 5 an orexigenic gut hormone - Insulinlevel5 insulin-like peptide 5 (INSL5 Unraveling the Role of Insulin-Like Peptide 5 in Human Physiology

INSL5 Insulin-like peptide 5 (INSL5) is a fascinating peptide hormone that belongs to the insulin superfamily, a group of proteins that includes insulin and insulin-like growth factors I and II. Discovered through extensive searches of expressed sequence tag (EST) databases, INSL5 has emerged as a significant player in various physiological processes, particularly in appetite regulation and glucose homeostasis.2025年11月25日—Insulin-like peptide 5is associated with insulin resistance in women with polycystic ovary syndrome.Insulin-like peptide 5(INSL5) ... Its complex structure and multifaceted functions warrant a deeper exploration into its biological significance作者：LJ Billing·2018·被引用次数：77—Insulin-like peptide-5 (INSL5) isan orexigenic gut hormonefound in a subset of colonic and rectal enteroendocrine L-cells together with the anorexigenic ....

INSL5 is characterized as a two-chain peptide hormone, with an A chain and a B chain, held together by three disulfide bonds in a pattern identical to that of insulin. This structural similarity to insulin hints at its involvement in metabolic regulation2KBC: Solution structure of human insulin-like peptide 5 .... The gene encoding insulin-like peptide 5 is the INSL5 gene, and its protein product, INSL5 protein expression, is notably high in the rectum, with lesser amounts found in the uterus and ascending and descending colon.

Research has established insulin-like peptide 5 as an orexigenic gut hormoneInternational Journal of Peptide Research and Therapeutics. This means it plays a role in stimulating appetite. Specifically, INSL5 is released from specialized cells in the colon known as enteroendocrine L-cells. These cells are also found in the rectum. While primarily functioning as an orexigenic hormone, it's interesting to note that INSL5 can be co-stored and released with anorexigenic hormones (those that suppress appetite), such as glucagon-like peptide-1 (GLP-1). This co-localization suggests a complex interplay in the regulation of feeding behavior作者：X Luo·2015·被引用次数：65—We report thatINSL5 increases glucose-dependent insulin secretionin vitro and in vivo, and the intestinal L-cell line GLUTag expresses RXFP4 and.. Studies have indicated that INSL5 levels are low in healthy volunteers but are elevated in individuals experiencing bile acid diarrhea (BAD) and a subset of patients with irritable bowel syndrome (IBS).

The physiological actions of insulin-like peptide 5 are mediated through its specific receptor, RXFP4Insulin-Like Peptide 5: Expression in the Mouse Brain and .... This receptor, also known as RXFP4 mRNA, is expressed in various tissues, including the intestinal L-cell line GLUTag作者：MJ Hu·2016·被引用次数：27—Among them,insulin-like peptide 5 (INSL5) and relaxin-3 share the highest sequence homology, but they have distinct receptor preference: INSL5 .... Activation of RXFP4 by INSL5 has been shown to have significant effects on glucose metabolism. Notably, INSL5 increases glucose-dependent insulin secretion both *in vitro* and *in vivo*. This insulinotropic effect suggests a potential role for INSL5 in managing blood glucose levels.

Beyond appetite and glucose regulation, INSL5 has been implicated in other physiological functionsInsulin-like 5 Peptide (INSL5) - PHOENIX BIOTECH. In mice, for instance, it may have a role in gut contractility or in thymic development and regulation作者：J Grosse·2014·被引用次数：170—We conclude that Insl5 isan orexigenic hormonereleased from colonic L-cells, which promotes appetite during conditions of energy deprivation.. The precise mechanisms underlying these effects are still under investigation.

The study of INSL5 extends to its potential therapeutic applicationsINSL5. The RXFP4 receptor is considered a potential pharmaceutical target for treating various human conditions, including constipation. Furthermore, the development of nonpeptide glucagon-like peptide-1 receptor agonists like Orforglipron (LY3502970) highlights the growing interest in targeting gut hormones for metabolic and gastrointestinal disorders. While INSL5 itself is not a glucagon-like peptide-1 receptor agonist, its role in appetite regulation places it within this broader field of research.

Despite its established roles, some research has suggested that Insulin-like peptide 5 fails to improve metabolism or body weight in certain contexts, indicating that its function may be more nuanced than initially presumed.Insulin-like peptide 5 is a microbially regulated ... The intricate signaling pathways involving INSL5, its receptor RXFP4, and its interaction with other gut hormones and metabolic factors are areas of ongoing scientific inquiry.Co-storage and release of insulin-like peptide-5, glucagon ...

To facilitate research and clinical assessment, tools such as the INSL5 ELISA kit are available for the quantitative assay of Human insulin-like peptide 5 (INSL5) in biological samples like serum and plasma. This kit typically offers a sensitivity of 5 ng/mL, enabling precise measurement of INSL5 concentrations.

In summary, insulin-like peptide 5 (INSL5) is a critical recently identified gut hormone with significant roles in appetite stimulation and glucose homeostasis.2KBC: Solution structure of human insulin-like peptide 5 ... As a member of the insulin superfamily, its structural resemblance to insulin and its interaction with the RXFP4 receptor underscore its importance in metabolic regulation. Continued research into the intricate functions of INSL5, including its potential impact on gut contractility and its involvement in conditions like bile acid diarrhea, promises to further illuminate its physiological significance and therapeutic potential. The complex nature of INSL5 (insulin-like peptide 5), a polypeptide of 135 amino acids, continues to be a subject of intense scientific explorationInsulin-like peptide INSL5. Short names. Insulin-like peptide 5. Cleaved into 2 chains. Insulin-like peptide INSL5 B chain; Insulin-like peptide INSL5 A chain ....