title: Prostaglandin production by minced carrageenin granuloma tissue of rats and its inhibition by dexamethasone and cycloheximide.
abstract: Seven-day-old carrageenin granuloma tissue of rats, when incubated in organ culture, produced 6-keto-prostaglandin F1 alpha, prostaglandin E2, prostaglandin F2 alpha, and thromboxane B2 in ratios of 16/7/1/1, respectively. Indomethacin (1 microgram/ml) inhibited this cyclooxygenase-mediated arachidonic acid metabolism. Dexamethasone (1 microgram/ml) also inhibited this metabolic cascade. Its inhibitory effect was not immediate; preincubation of the tissue with dexamethasone potentiated its inhibitory effectiveness. Cycloheximide (0.1 to 10 microgram/ml) also inhibited prostaglandin production. The inhibitory mechanism by cycloheximide of prostaglandin production was discussed in relation to that by dexamethasone.
mesh_terms: D015121:6-Ketoprostaglandin F1 alpha; D000818:Animals; D002351:Carrageenan; D046508:Culture Techniques; D003513:Cycloheximide / Q000494:pharmacology*; D003907:Dexamethasone / Q000494:pharmacology*; D006099:Granuloma / Q000139:chemically induced / Q000378:metabolism*; D007213:Indomethacin / Q000494:pharmacology; D008297:Male; D011453:Prostaglandins / Q000096:biosynthesis*; D011458:Prostaglandins E / Q000096:biosynthesis; D011460:Prostaglandins F / Q000096:biosynthesis; D051381:Rats; D013929:Thromboxane B2 / Q000096:biosynthesis
chemical_list: D011453:Prostaglandins; D011458:Prostaglandins E; D011460:Prostaglandins F; D013929:Thromboxane B2; D015121:6-Ketoprostaglandin F1 alpha; D003907:Dexamethasone; D002351:Carrageenan; D003513:Cycloheximide; D007213:Indomethacin