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Dworski R, Sheller JR, Christman BW. Quantitative analysis of cyclooxygenase metabolites of arachidonic Acid. Methods Mol Med. 2001;56:411-22doi: 10.1385/1-59259-151-5:411.
Dworski, R., Sheller, J. R., & Christman, B. W. (2001). Quantitative analysis of cyclooxygenase metabolites of arachidonic Acid. Methods in molecular medicine, 56411-22. https://doi.org/10.1385/1-59259-151-5:411
Dworski, R, et al. "Quantitative analysis of cyclooxygenase metabolites of arachidonic Acid." Methods in molecular medicine vol. 56 (2001): 411-22. doi: https://doi.org/10.1385/1-59259-151-5:411
Dworski R, Sheller JR, Christman BW. Quantitative analysis of cyclooxygenase metabolites of arachidonic Acid. Methods Mol Med. 2001;56:411-22. doi: 10.1385/1-59259-151-5:411. PMID: 21336918.
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Methods Mol Med. 2001;56:411-22. doi: 10.1385/1-59259-151-5:411.

Quantitative analysis of cyclooxygenase metabolites of arachidonic Acid.

Methods in molecular medicine

R Dworski, J R Sheller, B W Christman

Affiliations

  1. Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN.

PMID: 21336918 DOI: 10.1385/1-59259-151-5:411

Abstract

Metabolism of arachidonic acid results in a host of biologically active compounds with profound effects on airway inflammation (1). After activation of cellular phospholipases and release of free arachidonic acid, catalyzed insertion of oxygen occurs enzymatically via action of one of the two known cyclooxygenase isoenzymes (COX-1 and COX-2). The unstable bicyclic intermediate, PGH(2), undergoes subsequent metabolism to form prostaglandins (PG), thromboxane (Tx), and leukotrienes (LT) (see Fig.1). In addition, free radicals can oxygenate arachidonate although it is bound to the diacylgycerol backbone of membrane phospholipids. The family of compounds formed in this way, known as isoprostanes, are stereochemically different and incorporate a large number of regioisomeric compounds that may confound measurement of PG (2-5 and see Chapter 33 ). Arachidonic acid can also be metabolized by specific cytochrome P(450) enzymes to regioisomeric epoxides and stereo specific hydro xyeicosatetraenoic (HETE) acids (6). Fig. 1. Overview of pathways of metabolism of arachidonic acid during airway inflammation. Following activation of cellular phospholipases, arachidonic acid is cleaved from membrane phospholipids. It is undergoing dioxygenation catalyzed by cyclooxygenase (either COX-1 or COX-2 isoforms) to form the unstable endoperoxide intermediate PGH2. Specific isomerases with varied cellular distribution further metabolize PGH2 to bioactive prostaglandins and thromboxanes.

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