NAD+-15-hydroxyprostaglandin dehydrogenase distribution in rat kidneyJT Wright and CN Corder
Rat kidney NAD+-dependent 15-hydroxyprostaglandin dehydrogenase (PGDH) was measured in zones and substructure of the rat kidney nephron. This was accomplished utilizing an assay procedure based upon determining the amount of prostaglandin E1 present before and after the reaction with the 15-hydroxyprostaglandin dehydrogenase contained in the tissue sample. The enzyme activity was assayed in freeze dried, quick frozen rat kidney sections and its distribution within the rat kidney was determined. In kidney zones, it was localized to medullary rays and inner cortex. In kidney substructure, activity was highest in collecting tubule, pars recti tubule, distal convoluted tubule and the ascending limb of Henle (14.2, 11.5, 6.4 and 9.2 mM kg-1hr-1, respectively). Activity in glomeruli, proximal convoluted tubule and small arteries was lower (2.1, 2.8 and 2.1 mM kg-1hr-1, respectively). The assay procedure was verified by established assays (spectrophotometric, fluorometric and radiometric TLC) which are often used in homogenate and purified PGDH preparations.
Volume 27,
Issue 2,
pp. 657-664,
02/01/1979
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V. L. Schuster, S. Itoh, S. W. Andrews, R. M. Burk, J. Chen, K. M. Kedzie, D. W. Gil, and D. F. Woodward Synthetic Modification of Prostaglandin F2alpha Indicates Different Structural Determinants for Binding to the Prostaglandin F Receptor Versus the Prostaglandin Transporter Mol. Pharmacol., April 13, 2001; 58(6): 1511 - 1516. [Abstract] [Full Text] |
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