Rat Cyclooxygenase-1(COX-1) ELISA Kit

Code CSB-E13416r
Size 96T,5×96T,10×96T
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Product Details

Target Name
prostaglandin-endoperoxide synthase 1 (prostaglandin G/H synthase and cyclooxygenase)
Alternative Names
Ptgs1 ELISA Kit; Cox-1 ELISA Kit; Cox1 ELISA Kit; Prostaglandin G/H synthase 1 ELISA Kit; EC 1.14.99.1 ELISA Kit; Cyclooxygenase-1 ELISA Kit; COX-1 ELISA Kit; Prostaglandin H2 synthase 1 ELISA Kit; PGH synthase 1 ELISA Kit; PGHS-1 ELISA Kit; PHS 1 ELISA Kit; Prostaglandin-endoperoxide synthase 1 ELISA Kit
Abbreviation
PTGS1
Uniprot No.
Species
Rattus norvegicus (Rat)
Sample Types
serum, plasma, tissue homogenates
Detection Range
7.8 pg/mL-500 pg/mL
Sensitivity
1.95 pg/mL
Assay Time
1-5h
Sample Volume
50-100ul
Detection Wavelength
450 nm
Research Area
Metabolism
Assay Principle
quantitative
Measurement
Sandwich
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 rat COX-1 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)  
1:100 Average % 86  
Range % 80-92  
1:200 Average % 92  
Range % 88-97  
1:400 Average % 93  
Range % 85-99  
1:800 Average % 101  
Range % 95-107  
Recovery
The recovery of rat COX-1 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) 95 89-98  
EDTA plasma (n=4) 90 84-94  
             
             
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  
500 2.448 2.352 2.400 2.262  
250 2.035 1.989 2.012 1.874  
125 1.512 1.501 1.507 1.369  
62.5 0.922 0.879 0.901 0.763  
31.2 0.491 0.473 0.482 0.344  
15.6 0.336 0.318 0.327 0.189  
7.8 0.207 0.199 0.203 0.065  
0 0.139 0.137 0.138    
Troubleshooting
and FAQs
Storage
Store at 2-8°C. Please refer to protocol.
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

This rat cyclooxygenase-1 (COX-1) ELISA kit employs the quantitative sandwich enzyme immunoassay technique to measure the levels of rat COX-1 in different samples, including 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 COX-1 bound in the initial step.

COX-1 (PTGS1) is a constitutive enzyme expressed in the vascular endothelium, in platelets, and in many other cells in the body. It is responsible for the initial cyclooxygenase reaction, the target for NSAIDs, the conversion of arachidonic acid to PGG2, and the subsequent peroxidase reaction that converts PGG2 to PGH2. Several studies suggest that COX-1 also plays a role in neuroinflammation. COX-1 also mediates prostaglandin-dependent gastric protection. In gastric mucosa, COX-1 is involved in the synthesis of PGE2 and PGI2, which exert cytoprotective effects on several aspects of gastric function such as an increase of bicarbonate and mucus secretion, reduction of gastric acid and pepsin secretion, and maintaining adequate blood flow to the mucosa.

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Target Background

Function
(From Uniprot)
Dual cyclooxygenase and peroxidase in the biosynthesis pathway of prostanoids, a class of C20 oxylipins mainly derived from arachidonate, with a particular role in the inflammatory response. The cyclooxygenase activity oxygenates arachidonate (AA, C20:4(n-6)) to the hydroperoxy endoperoxide prostaglandin G2 (PGG2), and the peroxidase activity reduces PGG2 to the hydroxy endoperoxide PGH2, the precursor of all 2-series prostaglandins and thromboxanes. This complex transformation is initiated by abstraction of hydrogen at carbon 13 (with S-stereochemistry), followed by insertion of molecular O2 to form the endoperoxide bridge between carbon 9 and 11 that defines prostaglandins. The insertion of a second molecule of O2 (bis-oxygenase activity) yields a hydroperoxy group in PGG2 that is then reduced to PGH2 by two electrons. Involved in the constitutive production of prostanoids in particular in the stomach and platelets. In gastric epithelial cells, it is a key step in the generation of prostaglandins, such as prostaglandin E2 (PGE2), which plays an important role in cytoprotection. In platelets, it is involved in the generation of thromboxane A2 (TXA2), which promotes platelet activation and aggregation, vasoconstriction and proliferation of vascular smooth muscle cells.
Subcellular Location
Microsome membrane; Peripheral membrane protein. Endoplasmic reticulum membrane; Peripheral membrane protein.
Protein Families
Prostaglandin G/H synthase family
Database Links
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