C-Peptide

Science translational medicine · 2021

Researchers found that a 14-day treatment with teplizumab improved and stabilized the function of insulin-producing beta cells in individuals at high risk for type 1 diabetes. The study showed that those treated with teplizumab took significantly longer to develop diabetes compared to those who received a placebo.

• Teplizumab treatment improved beta cell function.
• Participants treated with teplizumab were diagnosed with diabetes much later than those on placebo.
• The median follow-up period was approximately 923 days.

Cellular and molecular life sciences : CMLS · 2021

Researchers observed that proinsulin C-peptide, while not crucial for diabetes treatment, has significantly influenced our understanding of insulin and peptide hormones. They found that C-peptide may have multiple functions and plays a role in the evolution of hormone biology, with practical applications in type 1 diabetes immunotherapy and as a measure of beta cell activity.

• C-peptide research has changed views on insulin and peptide hormone biology.
• C-peptide may have multiple biological activities that should be considered in hormone therapies.
• C-peptide fragments are used in immunotherapy for type 1 diabetes.

The Journal of clinical endocrinology and metabolism · 2021

Researchers found that tirzepatide, a new treatment for type 2 diabetes, improved blood sugar control and weight loss more effectively than another medication called dulaglutide. They observed that tirzepatide enhanced insulin sensitivity and beta-cell function, with only a small part of these improvements linked to weight loss, suggesting it works through unique mechanisms.

• Tirzepatide led to greater glucose control and weight loss compared to dulaglutide.
• It significantly improved insulin sensitivity and beta-cell function.
• Most improvements in insulin sensitivity were not solely due to weight loss.

Proceedings of the National Academy of Sciences of the United States of America · 2018

Researchers found that proinsulin C-peptide, a part of the insulin molecule, is recognized by T cells in people with type 1 diabetes. This suggests that C-peptide may play a role in the autoimmune response that damages insulin-producing cells in the pancreas. Understanding this relationship could help in developing targeted treatments for the disease.

• Proinsulin C-peptide is an autoantigen in type 1 diabetes.
• T cells target proinsulin C-peptide in the autoimmune response.
• Identifying these targets may aid in developing specific immunotherapies.

Vascular health and risk management · 2008

Researchers observed that C-peptide, a byproduct of insulin production, may have both positive and negative effects on diabetes complications. While it appears to help prevent nerve damage and improve blood flow, it may also contribute to inflammation and worsen some conditions. The study highlights the need for further research to understand C-peptide's role in diabetes management.

• C-peptide may help prevent diabetic neuropathy and improve blood flow.
• It shows potential benefits in reducing vascular dysfunction.
• C-peptide could also induce inflammation, possibly worsening diabetes complications.

Experimental diabesity research · 2004

Researchers observed that C-peptide plays multiple roles in the production and release of insulin from pancreatic beta cells. It helps in the proper formation of insulin and is released alongside it, serving as a useful marker for measuring insulin secretion. The study also suggests that C-peptide may have additional functions in the body after its release.

• C-peptide aids in the proper folding and assembly of insulin.
• It is released in equal amounts with insulin, making it a marker for insulin secretion.
• C-peptide may have other physiological roles after being released into the bloodstream.

Diabetes/metabolism research and reviews · 2003

Researchers found that C-peptide, previously thought to be inactive, actually has important biological effects. It can improve kidney and nerve function in people with type 1 diabetes and enhance blood flow in various tissues. These findings suggest that C-peptide might help prevent long-term complications of diabetes.

• C-peptide has biological activity and can improve kidney and nerve function.
• It enhances blood flow in tissues like muscles and skin.
• C-peptide may help prevent long-term complications in type 1 diabetes.

Comparative biochemistry and physiology. B, Comparative biochemistry · 1990

Researchers observed that relaxin is a reproductive hormone that plays a role in childbirth and sperm movement across various species. They found that while relaxins share a similar structure, their amino acid compositions can vary significantly even among closely related species, challenging traditional ideas about molecular evolution.

• Relaxin influences childbirth and sperm motility in many species.
• All relaxins have a similar two-chain structure.
• The amino acid compositions of relaxins differ significantly among closely related species.