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  • Title: [Acute prostaglandin E changes in the kidney medulla after intravenous application of blood pressure active drugs in rabbits].
    Author: Taube C, Mest HJ, Block HU, Förster W.
    Journal: Acta Biol Med Ger; 1975; 34(6):1057-64. PubMed ID: 1199621.
    Abstract:
    The blood pressure active substances noradrenaline, alpha-methyl-dopa, clonidine, dihydralazine, and reserpine were studied 20 min after i.v. administration to rabbits for their action on blood pressure, heart rate, PGE-content and -synthesis in the renal medulla. Noradrenaline caused increase in blood pressure, and distinctly enhanced the PGE content in the renal medulla. alpha-methyl-dopa raised both PGE-content and -synthesis, without changing blood pressure and heart rate. Clonidine and dihydralazine caused a pronounced fall of the blood pressure, but only did dihydralazine lower PGE-synthesis, while no such effect was produced by clonidine. Reserpine, like dihydralazine, decreased PGE-synthesis, without simultaneously lowering blood pressure. Indomethacine, one of the most potent inhibitors of PG-synthesis, has no effect on blood pressure within 20 min. The results argue against the existence of a simple direct correlation between PGE-synthesis rate in the homogenate of rabbit renal medulla and the instantaneous blood pressure.
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