- cELISA
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Competitive ELISA - 20 HETE ELISA Kit (AB175817)
Example of standard curve obtained with ab175817.
Reactivity data
Product details
Abcam's 20 HETE competitive in vitro ELISA (Enzyme-Linked Immunosorbent Assay) kit is designed for the determination of 20 HETE (also known as 20-OH-AA) levels in biological samples. The specificity of the 20 HETE ELISA was investigated using authentic 20 HETE and a panel of fatty acids which, based on their structure, might be anticipated to compete with 20 HETE for binding to antibodies for 20 HETE. Anti-20 HETE did not cross-react with 14,15- and 11,12-DHETs, PGE2 and showed almost no cross-reactivity even with structurally extremely similar arachidonic acid (AA), linoleic acid and linolenic acid as shown in the competitive ELISA analysis. Considering the only difference between 20-HETE and AA is an oxygen molecule, the specificity of this kit is a surprise.
Human essential and salt-sensitive hypertensions were related to differential AA metabolism by cytochrome P450 (CYP) 4A which has AA-ω-hydroxylase (20 HETE synthesis) activity. Increased circulating insulin inhibits 20 HETE synthesis in obese hypertensive subjects.
Recently, CYP4F2 genetic variants, which increased urinary 20 HETE secretion, were found to be correlated with the risk for hypertension in a Chinese population.
This kit can be used for the determination of 20 HETE in serum, plasma, cells and tissues following proper isolation and purification.
REACH authorisation
Abcam has not and does not intend to apply for the REACH Authorisation of customers' uses of products that contain European Authorisation list (Annex XIV) substances.
It is the responsibility of our customers to check the necessity of application of REACH Authorisation, and any other relevant authorisations, for their intended uses.
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Supplementary information
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Biological function summary
20-HETE modulates various physiological processes. It functions independently rather than as part of a complex making it a unique regulator. In the cardiovascular system 20-HETE controls vascular tone by influencing the contraction and relaxation of blood vessels. It also affects renal function contributing significantly to sodium and water balance therefore impacting blood pressure regulation. Its ability to mediate cellular signaling cascades highlights its significance in maintaining homeostasis.
Pathways
20-HETE integrates into the renin-angiotensin system and the arachidonic acid metabolism pathway. In the renin-angiotensin system 20-HETE interacts with angiotensin II to potentiate vascular reactivity. In the arachidonic acid pathway 20-HETE is synthesized from arachidonic acid positioning it upstream from other bioactive eicosanoids. These interactions with proteins like angiotensin II and enzymes of the cytochrome P450 family highlight 20-HETE's role in diverse biological pathways that regulate vascular function and fluid homeostasis.
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Publications (2)
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Cell proliferation 54:e12964 PubMed33314534
2020
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International journal of biological sciences 15:2037-2050 PubMed31592228
2019
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Unspecified reactive species
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