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Effect of furosemide upon urinary kallikrein excretion

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Abstract

Having in mind the significant decrease of urinary kallikrein in rat with renal hypertension and in humans with essential hypertension, the effects of furosemide on kininogenase activity has been studied in urine of normal and hypertensive rats which received tap water or a 1% NaCl solution for drinking. Administration of 20 mg furosemide which produces maximal diuretic effect in normal rats, induced in these animals a 150–200% increase of the excretion of this enzyme after 8 hours, when compared to the activity measured before giving the drug. This increase which is observed in the normal rats drinking either water or a 1% NaCl solution shows a significant correlation with the excretion of sodium, potassium and water. In hypertensive rats, in 7 or 9 cases, an increase of kallikrein excretion (200–600%) is observed, which does not reach the levels of excretion in normal untreated rats. Furosemide did not produce increase of urinary kallikrein in hypertensive rats drinking 1% NaCl solution.

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Authors and Affiliations

  1. Department of Physiology and Embriology, Laboratory of Physiology, Institute of Biological Sciences, Catholic University of Chile, Chile

    H. R. Croxatto, J. Roblero, R. Garcia, J. Corthorn & M. L. San Martín

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  1. H. R. Croxatto
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  2. J. Roblero
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  3. R. Garcia
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  4. J. Corthorn
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  5. M. L. San Martín
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Croxatto, H.R., Roblero, J., Garcia, R. et al. Effect of furosemide upon urinary kallikrein excretion. Agents and Actions 3, 267–274 (1973). https://doi.org/10.1007/BF01986479

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  • DOI: https://doi.org/10.1007/BF01986479

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