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  • Title: Inhibition of kidney function after blockade of thromboxane synthetase by imidazole in anaesthetized rats.
    Author: Pfeiffer L, Fleck C, Bartha J, Bräunlich H.
    Journal: Acta Physiol Hung; 1988; 72(2):201-11. PubMed ID: 3227860.
    Abstract:
    Experiments on anaesthetized female Wistar rats have shown that imidazole reduces renal excretion of p-aminohippurate (PAH). This effect occurs only after administration of imidazole simultaneously with a volume load (2 ml/100 g b.wt.). Injection of imidazole immediately before a PAH bolus (100 mg/100 g b.wt. in 2 ml) is followed by reduced PAH excretion via urine for at least 1 hour. In contrast, if a PAH bolus is given 20 min or later after imidazole no effect of this drug on renal PAH transport is demonstrable. These findings indicate that imidazole can interfere effectively with thromboxane synthesis only if thromboxane production is activated by volume expansion. Interestingly, despite 40% reduction of renal PAH excretion in volumen loaded rats, PAH serum disappearance is identical in controls and imidazole treated rats. Thus differences in the volume of distribution for PAH after imidazole must be expected. Under our experimental conditions imidazole was without effect on renal electrolyte excretion.
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