Description
Principle of the Assay: This assay employs a two-site sandwich ELISA to quantitative KL in Human serum, plasma. An antibody specific for KL has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any KL present is bound by the immobilized antibody. After removing any unbound substances, a biotin - conjugated antibody specific for KL is added to the wells. After washing, Streptavidin conjugated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of KL bound in the initial step. The color development is stopped and the intensity of the color is measured.
Background/Introduction: Klotho is a type-I membrane protein that is related to beta -glucuronidases. Reduced production of this protein has been observed in patients with chronic renal failure (CRF), and this may be one of the factors underlying the degenerative processes (e.g., arteriosclerosis, osteoporosis, and skin atrophy) seen in CRF. Also, mutations within this protein have been associated with ageing and bone loss. Klotho is a transmembrane protein that, in addition to other effects, provides some control over the sensitivity of the organism to insulin and appears to be involved in aging. Its discovery was documented in 1997 by Kuro-o et al. The name of the gene comes from Klotho or Clotho, one of the Moirae, or Fates, in Greek mythology