نتایج جستجو برای: cyclooxygenase 1 and 2 enzyme

تعداد نتایج: 17525058  

Journal: :Journal of the American Society of Nephrology : JASN 2000
R C Harris

Prostaglandins are produced constitutively by many tissues in the body, including brain, gut, and kidney, and their synthesis increases at sites of inflammation. Cyclooxygenase (COX), the enzyme responsible for the initial rate-limiting metabolism of arachidonic acid to prostaglandin G2 and subsequently to prostaglandin H2, was first purified in ram seminal vesicles and was cloned in 1988 by De...

Journal: :Indian journal of experimental biology 2006
Ashish Dhir Pattipati S Naidu Shrinivas K Kulkarni

Enzyme cyclooxygenase (COX) is reported to play a significant role in neurodegeneration and may play a significant role in the pathogenesis of epilepsy. Bicuculline (4 mg/kg; ip), picrotoxin (8 mg/kg; ip) and electroshock (60 mA for 0.2 sec) significantly induced convulsions in male Laka mice. COX-inhibitors viz. nimesulide (2.5 mg/kg; ip) and rofecoxib (2 mg/kg, ip) administered 45 minutes pri...

2011
Tetsuya Tanigawa Toshio Watanabe Fumikazu Ohkawa Yuji Nadatani Koji Otani Hirohisa Machida Hirotoshi Okazaki Hirokazu Yamagami Kenji Watanabe Kazunari Tominaga Yasuhiro Fujiwara Koji Takeuchi Tetsuo Arakawa

Prostaglandin E(2) plays an important role in the maintenance of gastric mucosal integrity. The level of biologically active prostaglandin E(2) in the tissue is regulated by the balanced expression of its synthetic enzymes, such as cyclooxygenase, and its catabolic enzyme, 15-hydroxyprostaglandin dehydrogenase. We examined the effect of rebamipide, a mucoprotective drug, on prostaglandin E(2) p...

Journal: :American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 2009

Journal: :Clinical Cancer Research 2004

Journal: :Archives of biochemistry and biophysics 1980
M E Hemler W E Lands

The initial step in the conversion of arachidonic acid to prostaglandins and related derivatives is catalyzed by the microsomal enzyme, cyclooxygenase. The ovine enzyme (from sheep vesicular glands) requires heme which is tightly bound as a prosthetic group (l-3). The bovine enzyme also requires heme (4) from which it is readily dissociated (5). In addition to free hematin, a variety of hemepro...

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