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A peptide bond covalently attaches amino acids through a dehydration reaction. One amino acid's carboxyl group and another amino acid's amino group combine, releasing a water molecule. The resulting bond is the peptide bond. The products that such linkages form are peptides. As more amino acids join this growing chain, the resulting chain is a polypeptide. Each polypeptide has a free amino group at one end. This end has the N-terminal, or the amino-terminal, and the other end has a free...
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Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
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Persistent C-peptide: what does it mean?

Massimo Pietropaolo1

  • 1Division of Metabolism, Endocrinology & Diabetes, Department of Internal Medicine, The Brehm Center for Diabetes Research, University of Michigan Medical School, Ann Arbor, Michigan 48105, USA. maxtp@umich.edu

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This summary is machine-generated.

Residual insulin and C-peptide secretion is possible in long-standing type 1 diabetes mellitus (T1D). Emerging evidence shows functional beta cells persist, offering hope for new therapeutic strategies in T1D management.

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Area of Science:

  • Endocrinology
  • Immunology
  • Diabetes Research

Background:

  • The traditional view posits that type 1 diabetes mellitus (T1D) leads to complete destruction of insulin-producing beta cells.
  • Recent findings challenge this assumption, indicating residual beta cell function may persist even in long-standing T1D.

Purpose of the Study:

  • To review emerging evidence supporting residual insulin and C-peptide secretion in patients with long-duration T1D.
  • To highlight the potential implications for understanding T1D pathophysiology and treatment.

Main Methods:

  • Review of recent clinical and histological investigations in long-term T1D patients.
  • Analysis of studies on the effects of GLP-1 agonists on glycemic control and C-peptide in T1D.

Main Results:

  • Evidence suggests pancreatic beta cells are present and capable of regulated insulin secretion in a majority of individuals with T1D lasting over 50 years.
  • Glucagon-like peptide 1 (GLP-1) agonists have shown promising effects on glycemic control and residual C-peptide production in long-term T1D.

Conclusions:

  • C-peptide is a significant marker, not merely a byproduct of insulin synthesis.
  • Further research into the immunology and pathophysiology of T1D is crucial to understand beta cell resilience and develop novel therapeutic strategies.
  • Investigating insulin secretagogues and immune interventions may offer future treatment avenues for long-term T1D.