Islet amyloid polypeptide The iapp peptide, also widely known as islet amyloid polypeptide (IAPP) or amylin, is a crucial 37-amino acid peptide hormone primarily produced and co-secreted with insulin by the pancreatic beta cellsAnti-IAPP | Islet Amyloid Polypeptide antibody. Its fundamental role lies in regulating glucose metabolism and energy homeostasis, influencing processes such as gastric emptying, satiety, and insulin secretion. However, the aggregation of IAPP into amyloid fibrils is strongly associated with the pathogenesis of type 2 diabetes, highlighting its complex involvement in metabolic health. Understanding the structure, function, and aggregation propensity of IAPP is therefore vital for comprehending its impact on pancreatic beta-cell function and the development of diabetes.
As a glucoregulatory peptide hormone, IAPP plays a significant role in maintaining stable blood glucose levelsCat Islet Amyloid Polypeptide (IAPP) Peptide. Upon food intake, it is released alongside insulin from pancreatic beta cells. Its functions are diverse and contribute to overall metabolic controlAmylin Peptide-AAA35524.1 - IAPP. IAPP helps to slow down gastric emptying, which prevents rapid spikes in blood glucose after a meal.IAPP（胰岛淀粉样多肽）是一种由胰岛β细胞分泌的37个氨基酸组成的多肽，它在维持血糖平衡和调节葡萄糖稳态中发挥着关键作用。作为一种两亲性多肽，IAPP的结构特征使得它在 ... It also promotes satiety, influencing appetite and food intake. Furthermore, IAPP has been shown to inhibit glucagon secretion, another hormone that raises blood glucose levels, thereby contributing to a more balanced glycemic profile. These actions collectively support the body's ability to manage glucose efficientlyIslet Amyloid Polypeptide and Diabetes.
A key characteristic of IAPP is its propensity to aggregate and form amyloid deposits within the pancreatic islets.Amylin/IAPP is a glucoregulatory peptide hormonethat plays an important role in the regulation of energy homeostasis (PubMed:2690069). Selectively inhibits ... This amyloidogenic nature is particularly pronounced in individuals with type 2 diabetes. While IAPP normally exists as a soluble peptide, under certain conditions, it misfolds and self-assembles into insoluble amyloid fibrils作者：S Asthana·2018·被引用次数：113—The IAPP hormone functions in controlling glucose levels, as well as regulating feeding and digestive functions.IAPP belongs to calcitonin family of peptides.... These aggregates can accumulate within and around beta cells, leading to cellular stress, dysfunction, and eventual beta-cell death作者：S Asthana·2018·被引用次数：113—The IAPP hormone functions in controlling glucose levels, as well as regulating feeding and digestive functions.IAPP belongs to calcitonin family of peptides.... The progressive loss of beta cells impairs insulin production and secretion, exacerbating insulin resistance and driving the progression of type 2 diabetes. The presence of islet amyloid is a hallmark pathology observed in a significant majority of type 2 diabetic patients.IAPP - Islet amyloid polypeptide - Homo sapiens (Human)
IAPP is a member of the calcitonin family of peptides, sharing some structural similarities with calcitonin, calcitonin gene-related peptide, and adrenomedullin. The 37-amino acid sequence of IAPP is critical for its function and aggregation properties. While the exact mechanisms are still under investigation, specific regions of the peptide are believed to be involved in its self-assembly into amyloid structures. Researchers are actively studying the structure-function relationships of IAPP to better understand how its normal physiological roles are disrupted and how its aggregation leads to pathological outcomesAmylin.
The intricate relationship between IAPP aggregation and type 2 diabetes has spurred significant research interest. Understanding the molecular mechanisms underlying IAPP misfolding and fibril formation could pave the way for novel therapeutic strategies. Current research efforts are focused on developing ways to prevent IAPP aggregation, promote the clearance of existing amyloid deposits, or mitigate the toxic effects of these aggregates on beta cells.作者：R Akter·2015·被引用次数：329—The hormone islet amyloidpolypeptide(IAPP, or amylin) plays a role in glucose homeostasis but aggregates to form islet amyloid in type-2 diabetes. For instance, antibodies targeting pathological IAPP aggregates are being investigated as potential treatments. Furthermore, insights into IAPP's role in glucose metabolism could also lead to new approaches for managing diabetes.
In conclusion, the iapp peptide is a critical hormone involved in glucose homeostasis, but its tendency to form amyloid aggregates poses a significant threat to pancreatic beta-cell function, playing a pivotal role in the development of type 2 diabetes. Continued research into IAPP's structure, function, and aggregation pathways holds promise for developing effective interventions to combat this widespread metabolic disease.Cat Islet Amyloid Polypeptide (IAPP) Peptide
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