Human Endostatin,ES ELISA Kit

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Code CSB-E07973h
Size 96T,5×96T,10×96T
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Product Details

Target Name
Endostatin,ES
Alternative Names
FLJ27325, FLJ34914, KNO, KNO1, MGC74745, alpha 1 type XVIII collagen|antiangiogenic agent|endostatin|multi-functional protein MFP
Abbreviation
ES
Species
Homo sapiens (Human)
Sample Types
serum, plasma, tissue homogenates
Detection Range
15.6 pg/ml -1000 pg/ml
Sensitivity
3.9 pg/ml
Assay Time
1-5h
Sample Volume
50-100ul
Detection Wavelength
450 nm
Research Area
Cardiovascular
Precision

Intra-assay Precision (Precision within an assay): CV%<8%

Three samples of known concentration were tested twenty times on one plate to assess.

Inter-assay Precision (Precision between assays): CV%<10%

Three samples of known concentration were tested in twenty assays to assess.

Linearity

To assess the linearity of the assay, samples were spiked with high concentrations of human ES in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay.

 

Sample

Serum(n=4)

1:200

Average %

87

Range %

80-94

1:400

Average %

93

Range %

88-100

1:800

Average %

92

Range %

86-100

1:1600

Average %

90

Range %

86-98

Recovery

The recovery of human ES spiked to levels throughout the range of the assay in various matrices was evaluated. Samples were diluted prior to assay as directed in the Sample Preparation section.

Sample Type

Average % Recovery

Range

Serum (n=5)

93

89-98

EDTA plasma (n=4)

94

88-100

Typical Data

These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.

pg/ml

OD1

OD2

Average

Corrected

1000

1.976

2.034

2.005

1.827

500

1.120

1.167

1.143

0.966

250

0.751

0.728

0.740

0.562

125

0.494

0.519

0.506

0.329

62.5

0.337

0.321

0.329

0.151

31.2

0.242

0.253

0.247

0.070

15.6

0.221

0.214

0.218

0.040

0

0.180

0.175

0.178

 

Troubleshooting
and FAQs
Storage
Store at 2-8°C. Please refer to protocol.
Shelf Life
6 months
Lead Time
3-5 working days after you place the order, and it takes another 3-5 days for delivery via DHL or FedEx.
Description

The product CSB-E07973h is a sandwich ELISA kit developed to measure levels of human endostatin (ES) in serum, plasma, or tissue homogenates. The enzyme-substrate chromogenic reaction is also used to amplify the signal and quantify the levels of the analyte through the intensity of the colored product. The color intensity positively correlates with the amount of endostatin bound in the initial step.

Endostatin, a 20-kDa C-terminal cleavage product of type XVIII collagen, is an endogenous inhibitor known for its ability to inhibit the proliferation and migration of endothelial cells, angiogenesis, and tumor growth. Studies have proved that circulating endostatin increases significantly in patients with kidney and heart failure and may also contribute to disease progression. Endostatin inhibits angiogenesis by directly binding to both VEGFR1 and VEGFR2 and blocking VEGF interaction with Flt-1 and Flk-1 to prevent VEGF-induced tyrosine phosphorylation of VEGFR1 and VEGFR2 and all downstream signaling events.

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