Results 131 to 140 of about 4,137 (180)
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Prostaglandin Endoperoxide Synthases
2010Melissa V. Turman, Lawrence J. Marnett
exaly +2 more sources
Biochemical and Biophysical Research Communications, 1994
A Prostaglandin endoperoxide synthase isoenzyme was recently identified in several cell lines. Osteoblasts possess Prostaglandin endoperoxide synthase activity, but it is not known which isoenzymes are present in these cells. Our objective was to identify these isoenzymes in human osteoblasts. Resting cells in culture did not produce measurable amounts
A J, de Brum-Fernandes +7 more
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A Prostaglandin endoperoxide synthase isoenzyme was recently identified in several cell lines. Osteoblasts possess Prostaglandin endoperoxide synthase activity, but it is not known which isoenzymes are present in these cells. Our objective was to identify these isoenzymes in human osteoblasts. Resting cells in culture did not produce measurable amounts
A J, de Brum-Fernandes +7 more
openaire +2 more sources
Prostaglandin endoperoxide synthase: structure and catalysis
Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1991In this review, we describe the properties of PGH synthase, the enzyme which catalyzes the committed step in the synthesis of prostaglandins and thromboxane. We begin by presenting an overview of protanoid biosynthesis and the mechanism of action of these local hormones. We then describe the novel characteristics of the two distinct reactions catalyzed
W L, Smith, L J, Marnett
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Expression of prostaglandin endoperoxide synthase in rat brain
Molecular Brain Research, 1993Developmental and regional expression of prostaglandin endoperoxide synthase (PES) transcript was examined in the rat brain and in primary mixed cultures of neurons and glial cells from neonatal brain. Although the PES mRNA level in the brain was much lower than that in peripheral rat tissues such as lung, liver, spleen and kidney, a significant 3.0 kb
M, Kawasaki +3 more
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Immunocytochemical localization of prostaglandin endoperoxide synthase in the bovine intestine
Histochemistry, 1993The localization of prostaglandin (PG) endoperoxide synthase in bovine intestine was examined immunocytochemically with polyclonal antibody raised against PG endoperoxide synthase purified from bovine seminal glands. The most intense positive staining reaction for the enzyme was present in mast cells.
K, Ishimura +6 more
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Mechanism of Hydroperoxide Reduction by Mangano-Prostaglandin Endoperoxide Synthase
Biochemistry, 1996Reaction of manganese-reconstituted prostaglandin endoperoxide synthase (Mn-PGHS) with 15-hydroperoxyeicosatetraenoic acid (15-HPETE) generates two products in nearly equal amounts: 15-hydroxyeicosatetraenoic acid (15-HETE) and 15-ketoeicosatetraenoic acid (15-KETE) [Kulmacz et al. (1994) Biochemistry 33, 5428-5439]. Their proposed mechanism to explain
L M, Landino, L J, Marnett
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Prostaglandin endoperoxide synthase isozymes
1997Abstract PGH synthases catalyze the initial reaction common to the formation of prostanoids and are the target sites for most nonsteroidal anti-inflammatory drugs (NSAIDs). Until the recent discovery of a second PGH synthase isozyme (PGH synthase-2; PGHS-2), it was thought that NSAIDs acted by inhibiting a single enzyme, now referred to as PGH ...
William L. Smith, David L. DeWitt
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Prostaglandin Endoperoxide H Synthases-1 and -2
1996Publisher Summary The chapter compares and contrasts the structural and kinetic properties of prostaglandin endoperoxide H synthase-1 (PGHS-1) and -2. It also discusses the description of the interactions of the two isozymes with nonsteroidal anti-inflammatory drugs (NSAIDs). There are three general areas of study important to understanding more about
W L, Smith, D L, Dewitt
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Inactivation of prostaglandin endoperoxide synthase by acylating derivatives of indomethacin
Biochemistry, 1993Derivatives of the potent antiinflammatory agent and cyclooxygenase inhibitor indomethacin were synthesized in which the carboxylic acid moiety was converted into reactive acylating agents. Indomethacin imidazole (indomethacin-IM) and indomethacin N-hydroxysuccinimide (indomethacin-NHS) inactivated both the cyclooxygenase and peroxidase activities when
I, Wells, L J, Marnett
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