title: Catabolism of 6-ketoprostaglandin F1alpha by the rat kidney cortex.
abstract: Homogenates of the rat kidney cortex converted 5,8,9,11,12,14,15-hepta-tritiated 6-ketoprostaglandin F 1alpha into one major product identified by gas chromatography-mass spectrometry of the methoxime-methyl ester trimethylsilyl ether derivative as 6,15-diketo-9,11-dihydroxyprost-13-enoic acid. The sequence of derivatisation i.e. methoximation prior to methylation, was crucial as methylation of 15-keto catabolites of the E, F and 6-keto-F series affords degradation products. The corresponding 15-keto-13,14-dihydro catabolite was formed in much smaller quantities. Time course studies indicated that 6-keto-prostaglandin F1alpha was catabolised at a slower rate (about 2-5 fold) than prostaglandin F1alpha. The catabolic activity was blocked by NADH.
mesh_terms: D000818:Animals; D007672:Kidney Cortex / Q000378:metabolism*; D008297:Male; D013058:Mass Spectrometry; D011460:Prostaglandins F / Q000378:metabolism*; D051381:Rats
chemical_list: D011460:Prostaglandins F