ELISA/assay

Pro-Insulin ELISA Kit

MBS580031

96 Strip Wells

425 USD

ELISA Kit

Pro-Insulin ELISA Kit

Pro-Insulin

proinsulin; Insulin; insulin; preproinsulin; insulin

INS; INS; IDDM; ILPR; IRDN; IDDM1; IDDM2; MODY10

INS_HUMAN

110

Method: ELISA. Principle: ELISA. Control Standards: 0,2.6,6.6,16.5,33,66pmol/l. Sensitivity: 1pmol/l

Diabetes Markers

Intended Use: The Pro-Insulin ELISA Kit is intended for the quantitative measurement of insulinomas in human serum or plasma. Summary and Explaination: Proinsulin is a 9390 MW polypeptide of 86 amino acids, that is synthesized in the beta cells of the pancreas and is the precursor molecule for insulin. Most proinsulin is converted to insulin and C-Peptide, which are secreted in equimolar amounts into the blood. About 15 % is not converted and is released as proinsulin. The biological activity of proinsulin is only about 10% of Insulin, but the half life of proinsulin is three times as long as insulin. The level of proinsulin in serum can be a reflection of beta cell status. Both IDDM and NIDDM are characterized by dysfunction of the pancreatic beta cells. Elevated proinsulin levels have been noted at the onset of IDDM and in healthy siblings of IDDM patients. Proinsulin levels may also be increased in patients with established NIDDM. Increased levels of circulating proinsulin are found in older patients, pregnant or obese diabetics, patients with insulinomas, functional hypoglycemia and hyperinsulinemia, a rare syndrome. Because the structure of proinsulin is similar to insulin, proinsulin may be detected as immunoreactive insulin in the insulin assay. Immunoreactive insulin levels are generally determined in conventional RIA's, which overestimate the insulin level because the methods use antibodies which crossreact with proinsulin. By calculating the molar ration of proinsulin to true insulin (P/I), a better assessment of beta cell function can be made. Principle of the test: The Proinsulin EIA is a solid phase enzyme-linked immunosorbent assay (ELISA) based on the sandwich principle. The microtiter wells are coated with a monoclonal antibody directed towards a unique antigenic site on a Proinsulin molecule. An aliquot of patient sample containing endogenous Proinsulin is incubated in the coated wells. After washing off the samples in a second step an enzyme conjugate, which is an anti-Proinsulin antibody conjugated with horseradish peroxidase is incubated in the wells. After incubation the unbound conjugate is washed off with wash solution. Having added the substrate solution, the intensity of colour developed is proportional to the concentration of Proinsulin in the patient sample

59036749

AAW83741.1

P01308

21,537 Da

AGE/RAGE Pathway 698754!!AMPK Signaling Pathway 989139!!AMPK Signaling Pathway 992181!!ATF-2 Transcription Factor Network Pathway 138006!!Adipogenesis Pathway 198832!!Aldosterone-regulated Sodium Reabsorption Pathway 130626!!Aldosterone-regulated Sodium Reabsorption Pathway 130590!!Amyloids Pathway 366238!!Arf6 Trafficking Events Pathway 137954!!Cardiac Progenitor Differentiation Pathway 712094

After removal of the precursor signal peptide, proinsulin is post-translationally cleaved into three peptides: the B chain and A chain peptides, which are covalently linked via two disulfide bonds to form insulin, and C-peptide. Binding of insulin to the insulin receptor (INSR) stimulates glucose uptake. A multitude of mutant alleles with phenotypic effects have been identified. There is a read-through gene, INS-IGF2, which overlaps with this gene at the 5' region and with the IGF2 gene at the 3' region. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2010]

96 Strip Wells

425 USD