ELISA Kit for Endothelial Cell Specific Molecule 1 (ESM1)

Endocan

Specificity

This assay has high sensitivity and excellent specificity for detection of Endothelial Cell Specific Molecule 1 (ESM1).
No significant cross-reactivity or interference between Endothelial Cell Specific Molecule 1 (ESM1) and analogues was observed.

Recovery

Matrices listed below were spiked with certain level of recombinant Endothelial Cell Specific Molecule 1 (ESM1) and the recovery rates were calculated by comparing the measured value to the expected amount of Endothelial Cell Specific Molecule 1 (ESM1) in samples.

Matrix Recovery range (%) Average(%)
serum(n=5) 79-103 90
EDTA plasma(n=5) 93-101 97
heparin plasma(n=5) 81-95 85

Precision

Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Endothelial Cell Specific Molecule 1 (ESM1) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Endothelial Cell Specific Molecule 1 (ESM1) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Endothelial Cell Specific Molecule 1 (ESM1) and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample 1:2 1:4 1:8 1:16
serum(n=5) 93-101% 83-96% 82-93% 98-105%
EDTA plasma(n=5) 84-91% 91-105% 78-94% 84-98%
heparin plasma(n=5) 97-105% 84-104% 83-98% 86-93%

Stability

The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition.
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.

Reagents and materials provided

Reagents Quantity Reagents Quantity
Pre-coated, ready to use 96-well strip plate 1 Plate sealer for 96 wells 4
Standard 2 Standard Diluent 1×20mL
Detection Reagent A 1×120µL Assay Diluent A 1×12mL
Detection Reagent B 1×120µL Assay Diluent B 1×12mL
TMB Substrate 1×9mL Stop Solution 1×6mL
Wash Buffer (30 × concentrate) 1×20mL Instruction manual 1

Assay procedure summary

1. Prepare all reagents, samples and standards;
2. Add 100µL standard or sample to each well. Incubate 1 hours at 37°C;
3. Aspirate and add 100µL prepared Detection Reagent A. Incubate 1 hour at 37°C;
4. Aspirate and wash 3 times;
5. Add 100µL prepared Detection Reagent B. Incubate 30 minutes at 37°C;
6. Aspirate and wash 5 times;
7. Add 90µL Substrate Solution. Incubate 10-20 minutes at 37°C;
8. Add 50µL Stop Solution. Read at 450nm immediately.

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Magazine Citations
Urology Detection on dynamic changes of endothelial cell specific molecule-1 in acute rejection after renal transplantation PubMed: 22608803
Microvasc Res. Endocan is useful biomarker of survival and severity in sepsis. Pubmed: 24769132
J Matern Fetal Neonatal Med. Endocan, a putative endothelial cell marker, is elevated in preeclampsia, decreased in acute pyelonephritis, and unchanged in other obstetrical syndromes Pubmed:25211383
Microvasc Res. Endocan is useful biomarker of survival and severity in sepsis Pubmed:24769132
Angiology Endocan Levels and Subclinical Atherosclerosis in Patients With Systemic Lupus Erythematosus PubMed: 26614790
Archives of Medical Science - Atherosclerotic Diseases Assessment of subclinical cardiac damage in chronic plaque psoriasis patients: a case control study Journal:-102
Int Immunopharmacol.  Inhibition of endocan attenuates monocrotaline-induced connective tissue disease related pulmonary arterial hypertension. pubmed:27912147
Oncotarget Diagnostic and prognostic values of endothelial-cell-specific molecule-1 with malignant pleural effusions in patients with non-small cell lung cancer pubmed:28514746
Biomedical and Pharmacology Journal Changes in Endocan Levels and Blood Coagulation in HIV Infection DOI: 10.13005/bpj/1082
Life Sciences A novel role of endocan in alleviating LPS-induced acute lung injury Pubmed:29627442
International Urology and Nephrology Is the plasma endocan level a reliable predictor for the severity of erectile dysfunction? Pubmed:30054863
The Open Rheumatology Journal Serum Level of Endothelial Cell-Specific Molecule-1 (ESM-1) as a New Potential Biomarker for Rheumatoid Arthritis Disease Activity Doi: 10.2174/1874312901812010189
Molecular Medicine Reports Downregulation of ENDOCAN in myeloid leukemia cells inhibits proliferation and promotes apoptosis by suppressing nuclear factor‑κB activity Pubmed: 30816462
Biomarkers in Medicine Endothelial biomarkers in the light of new sepsis definition Pubmed: 30920847
Experimental and Therapeutic Medicine Risk stratification and prognostic evaluation of endothelial cell‑specific molecule1, von Willebrand factor, and a disintegrin‑like and metalloprotease with …
Turkish Journal of Medical Sciences A novel marker relationship between carotid intima–media thickness and disease activity score-28 in patients with rheumatoid arthritis: human endothelial cell … Pubmed: 31655533
Biomarkers Role of Ascitic Endocan Levels in the Diagnosis of Spontaneous Bacterial Peritonitis in Decompensated Cirrhosis Pubmed: 32364003
J Obstet Gynaecol Res Comparison of the maternal serum endocan levels in preterm premature rupture of membrane and normal pregnancy 34109715
turkish journal clinics laboratory The relationship between serum endocan levels with the presence of contrast-induced nephropathy in patients undergoing coronary angiography
Catalog No. Related products for research use of Homo sapiens (Human) Organism species Applications (RESEARCH USE ONLY!)
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