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Water, cations, and norepinephrine content of cardiovascular tissues of unilaterally nephrectomized dogs treated with deoxycorticosterone and NaCl #MMPMID1201492
Constantopoulos G; Genest J; Kusumoto M; Rojo-Ortega JM
Can J Physiol Pharmacol 1975[Oct]; 53 (5): 866-72 PMID1201492show ga
Deoxycorticosterone pivalate (2.5 mg/kg) given intramuscularly on four occasions 10-15 days apart over a period of 45 days to unilaterally nephrectomized adult male mongrel dogs, receiving as drinking solution 0.9% NaCl in 5% dextrose, resulted in an average sustained rise in the mean arterial blood pressure of 30 mm Hg (1 mm Hg - 133 N/m2) in 60% of the animals. Hypertensive dogs had in their arterial tissues generally more sodium, potassium, magnesium, and calcium than the similarly treated but non-hypertensive dogs, but compared to the tissues of operated untreated or unoperated normotensive dogs, only sodium and calcium were significantly higher. The dogs who were similarly treated but did not develop hypertension had in their arterial tissues less sodium, potassium, and magnesium than operated untreated or unoperated normotensive dogs. Norepinephrine content in the branches of mesenteric arteries of all deoxycorticosterone- and NaCl-treated animals, irrespective of their blood pressure, was significantly lower, and in the myocardium significantly higher, than either the unoperated normotensive or operated but not further treated dogs. It is concluded, therefore, that in deoxycorticosterone + NaCl treatment the dogs which developed hypertension had more arterial sodium, potassium, magnesium, and calcium than those who were similarly treated but remained within the limits of normal blood pressure, and that there was no difference between hypertensive and non-hypertensive dogs in regard to their cardiovascular norepinephrine content.
Can+J+Physiol+Pharmacol 1975 ; 53 (5): 866-72
