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Updated: Jul 6, 2026

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Published on: May 16, 2021
Influence of C-peptide on glucose utilisation
B Wilhelm1, P Kann, A Pfützner
1Institute for Clinical Research and Development, Parcusstrasse 8, Mainz 55116, Germany. birgitw@ikfe.de
C-peptide, once thought inert, actively influences physiological functions. This review explores how C-peptide enhances glucose utilization through various mechanisms in both rats and humans.
Area of Science:
- Endocrinology and Metabolism
- Physiology
Background:
- C-peptide is increasingly recognized for its physiological roles beyond being a byproduct of insulin production.
- It interacts with cell membranes, stimulating key enzymes like Na,K-ATPase and endothelial nitric oxide synthase (eNOS).
- Evidence suggests C-peptide can reduce glomerular hyperfiltration and improve glucose utilization.
Purpose of the Study:
- To provide a comprehensive overview of existing research on C-peptide and its effects on glucose metabolism.
- To consolidate findings from in vitro studies to long-term human trials.
- To highlight the current understanding and gaps in knowledge regarding C-peptide's mechanisms in glucose utilization.
Main Methods:
- Literature review of published studies on C-peptide and glucose metabolism.
- Analysis of in vitro experimental data.
- Examination of results from in vivo studies in rats and humans.
Main Results:
- C-peptide demonstrates direct physiological effects, including enzyme stimulation and modulation of kidney function.
- Studies indicate a positive correlation between C-peptide activity and enhanced glucose utilization.
- Mechanisms underlying C-peptide's impact on glucose metabolism are still under investigation.
Conclusions:
- C-peptide plays a significant physiological role, particularly in glucose metabolism.
- Further research is needed to fully elucidate the intricate mechanisms by which C-peptide influences glucose utilization in various models.
- Understanding these mechanisms could offer new therapeutic avenues for metabolic disorders.
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