Sandwich ELISA, Biotin-labelled antibody
At ambient temperature. Upon receipt, store the product at the temperature recommended below.
Store the kit at 2–8°C. Under these conditions, the kit is stable until the expiration date (see label on the box).
Limit of Detection
Limit of detection(LOD) (defined as concentration of analyte giving absorbance higher than mean absorbance of blank* plus three standard deviations of the absorbance of blank: Ablank + 3×SDblank) is 0.7 ng/ml.
n = 8; CV = 4.4%
n = 8; CV = 5.9%
- bovine Non-detectable
- cat Non-detectable
- dog Non-detectable
- goat Non-detectable
- hamster Non-detectable
- horse Non-detectable
- human Non-detectable
- monkey Non-detectable
- pig Non-detectable
- rabbit Non-detectable
- sheep Non-detectable
- chicken Not tested
- rat Yes
- mouse Yes (recommended dilution 1:500)
- It is intended for research use only.
- The total assay time is less than 3.5 hours.
- The kit measures Clusterin in rat serum and rat urine.
- Assay format - 96 wells
- Quality Controls are rat serum based. No human sera are used.
- Standard is recombinant protein based.
- Components of the kit are provided ready to use, concentrated or lyophilized.
Neural tissue markers, Oncology, Others, Renal disease, Sepsis, Animal studies
Clusterin (Apolippoprotein J; SP-40,40; TRPM-2; SGP-2; pADHC-9; CLJ; T64; GP III; XIP8) is a highly conserved disulfide-linked secreted heterodimeric glycoprotein of 75-80 kDa but truncated forms targeted to the nucleus have also been identified.
The protein is constitutively secreted by a number of cell types including epithelial and neuronal cells and is a major protein in physiological fluids including plasma, milk, urine, cerebrospinal fluid and semen. Due to its wide breath of tissue distribution many diverse physiological functions have been attributed to Clusterin including sperm maturation, membrane recycling, lipid transportation, tissue remodelling, complement inhibition and cell-cell or cell-substratum interactions. Moreover, it was proposed that Clusterin functions as an extracellular chaperon that stabilizes stressed proteins in a folding-competent state, and that the protein is involved in programmed cell death. Another defining prominent function of Clusterin is its induction in many severe physiological disturbances states including kidney degenerative diseases, prostate and vesicle carcinogenesis, ovarian cancer and several neurodegenerative conditions (Alzheimer’s disease).
Recent study demonstrates, that serum Clusterin level increases significantly in diabetic type II patients and in patients with developing coronary heart disease, or myocardial infarction. These data raise the possibility that elevated Clusterin levels in serum may represent a strong indication of vascular damage.
In patients with systemic lupus erythematosus (SLE), reduced serum Clusterin levels correlated inversely with disease activity. Lowered Clusterin levels could be involved in the pathogeneses of SLE on account of decreased protective effects.
Another interesting observation obtained in rat model suggests that measurement of urinary Clusterin levels may be a useful clinical marker for the severity of renal tubular damage. Furthermore, urinary Clusterin may also help to differentiate between tubular and glomerular forms of proteinuria.
Areas of investigation:
Coronary heart diseases, Myocardial infarction, Neurodegenerative diseases, Kidney degenerative disease, Renal tubular damage