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Bromoenol Lactone, an Inhibitor of Calcium-Independent Phospholipase A2, Suppresses Carrageenan-Induced Prostaglandin Production and Hyperalgesia in Rat Hind Paw
Joint Authors
Tsuchida, Keiichiro
Ibuki, Takae
Matsumura, Kiyoshi
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-04-30
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Prostaglandin (PG) E2 and PGI2 are essential to hyperalgesia in inflammatory tissues.
These prostaglandins are produced from arachidonic acid, which is cleaved from membrane phospholipids by the action of phospholipase A2 (PLA2).
Which isozyme of PLA2 is responsible for the cleavage of arachidonic acid and the production of prostaglandins essential to inflammation-induced hyperalgesia is not clear.
In this study, we examined the effects of two PLA2 isozyme-specific inhibitors on carrageenan-induced production of PGE2 and PGI2 in rat hind paw and behavioral nociceptive response to radiant heat.
Local administration of bromoenol lactone (BEL), an inhibitor of calcium-independent PLA2 (iPLA2), significantly reduced carrageenan-induced elevation of prostaglandins in the inflamed foot pad 3 h after injection.
It also ameliorated the hyperalgesic response between 1 h and 3 h after carrageenan injection.
On the other hand, AACOCF3, an inhibitor of cytosolic PLA2, suppressed neither prostaglandin production nor the hyperalgesic response.
BEL did not suppress the mRNA levels of iPLA2 β, iPLA2 γ, cyclooxygenase-2, microsomal prostaglandin E synthase, prostaglandin I synthase, or proinflammatory cytokines in the inflamed foot pad, indicating that BEL did not suppress inflammation itself.
These results suggest that iPLA2 is involved in the production of prostaglandins and hyperalgesia at the inflammatory loci.
American Psychological Association (APA)
Tsuchida, Keiichiro& Ibuki, Takae& Matsumura, Kiyoshi. 2015. Bromoenol Lactone, an Inhibitor of Calcium-Independent Phospholipase A2, Suppresses Carrageenan-Induced Prostaglandin Production and Hyperalgesia in Rat Hind Paw. Mediators of Inflammation،Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1072448
Modern Language Association (MLA)
Tsuchida, Keiichiro…[et al.]. Bromoenol Lactone, an Inhibitor of Calcium-Independent Phospholipase A2, Suppresses Carrageenan-Induced Prostaglandin Production and Hyperalgesia in Rat Hind Paw. Mediators of Inflammation No. 2015 (2015), pp.1-7.
https://search.emarefa.net/detail/BIM-1072448
American Medical Association (AMA)
Tsuchida, Keiichiro& Ibuki, Takae& Matsumura, Kiyoshi. Bromoenol Lactone, an Inhibitor of Calcium-Independent Phospholipase A2, Suppresses Carrageenan-Induced Prostaglandin Production and Hyperalgesia in Rat Hind Paw. Mediators of Inflammation. 2015. Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1072448
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1072448