C-peptide is a 31 amino acid peptide released when proinsulin is split into insulin and C-peptide. Proinsulin is split when it is released from the pancreas into the blood in response to a rise in serum glucose levels. C-peptide function is not fully understood, it binds to cell membranes which leads to increased intracellular Ca2+ concentration and subsequent stimulation of N+, K+-ATPase and endothelial nitric oxide synthase activities. C-peptide also functions in repair of the muscular layer of arteries. Levels of C-peptide can be used to distinguish between type 1 and type 2 diabetes. Patients with type 1 diabetes will usually have decreased levels of C-peptide, while patients with type 2 diabetes will have normal or higher than normal levels.
Applications:
Suitable for use in ELISA. Other applications not tested.
Recommended Dilution:
Optimal dilutions to be determined by the researcher.
Storage and Stability:
May be stored at 4 degrees C for short-term only. For long-term storage and to avoid repeated freezing and thawing, aliquot and store at -20 degrees C. Aliquots are stable for at least 12 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
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