Coming soon: Human Properdin ELISA


Monday - January 23, 2012

The human Properdin ELISA (Cat.# HK334) can be used for the determination of properdin in serum, plasma, urine, BAL and CSF.

Detection of human properdin in normal human plasma

A panel of 30 plasma samples from randomly selected healthy donors (males and females) was tested for human properdin. The average level of human properdin was 24µg/ml, with a range of 15-36µg/ml, corresponding to previously reported levels.

Properdin and diseases
- Deficiency or malfunction of properdine may lead to severe impairment of alternative pathway activation, depending on the precise nature of the defect. One parameter of functional defect in the presence of measurable levels of protein is an impaired generation of the more active tetramer and trimer forms.
- Properdin-deficient individuals are shown to be more vulnerable for meningococcal as well as non-meningococcal infections
- Properdin deficiency might also contribute to autoimmunity due to its role in safe clearance of apoptotic and/or necrotic cells
- Properdin deficiency can be divided in three phenotypes:
    - Type 1, properdin is absent in plasma
    - Type 2, strongly reduced levels (1-10% of normal levels)
    - Type 3, normal levels but inactive properdin
- Properdin is likely to contribute to development of abdominal aortic aneurysms (AAA) by causing chronic inflation of the vascular wall
- In chronic kidney disease (CKD) unwanted complement activation is observed and properdin was shown to be present in diseased but not in normal kidney tissue.

Specifications
- Working time of 3½ hours.
- Minimum concentration which can be measured is 0.31 ng/ml.
- Measurable concentration range of 0.31 to 20 ng/ml.
- Working volume of 100 µl/well.
- Useful for  serum, plasma, urine, BAL and CSF samples
- Cross reactivity with mouse, pig and rabbit

For more information have a look at the poster of properdin or contact us at support@hycultbiotech.com

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