Effect of Potassium Concentration on the Grain Orientation in Bismuth Sodium Potassium Titanate

Twelve bilaterally nephrectomized dogs on a low-salt, 54 cal/kg/day diet were maintained for periods up to 3 weeks by intermittent peritoneal dialysis. This procedure maintained the animals in normal sodium balance but provided both a negative potassium and nitrogen balance. The over-all loss of potassium occurred even though the dialysate potassium concentration was varied from 2.8–3.7 mEq/l. It is believed that the negative K and N balances are brought about by loss of plasma protein and some erythrocytes into the peritoneal dialysate. The data indicate that K and N are not lost from the body in the same ratio that they occur in tissues. Renoprival hypertension developes despite failure of the body to retain sodium and despite loss of both potassium and nitrogen from the body.

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Aorta Electrolytes of Hypotensive Potassium-Deficient Rats

American Journal of Physiology-Legacy Content ◽

10.1152/ajplegacy.1958.195.2.445 ◽

1958 ◽

Vol 195 (2) ◽

pp. 445-447 ◽

Cited By ~ 6

Author(s):

S. Charles Freed ◽

Shirley St. George ◽

Ray H. Rosenman

Keyword(s):

Blood Pressure ◽

Potassium Concentration ◽

Pressure Rise ◽

Sodium Concentration ◽

Sodium Content ◽

Potassium Deficiency ◽

Sodium Potassium ◽

High Sodium ◽

Blood Pressure Rise ◽

Arterial Tone

The hypotension of potassium-deficiency is associated with a decrease in aorta potassium concentration, the sodium content remaining unchanged, resulting in a high sodium/potassium ratio. Loss of arterial tone may result and thus contribute to the lowering of blood pressure. Cortisone administration to such rats does not alter the low aorta potassium content but appreciably reduces the sodium concentration. The return to a more normal sodium/potassium ratio in the aorta following cortisone may restore the arterial tone and thus explain the blood pressure rise to normal levels.

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Bound sodium in artery wall

American Journal of Physiology-Legacy Content ◽

10.1152/ajplegacy.1960.199.5.783 ◽

1960 ◽

Vol 199 (5) ◽

pp. 783-787 ◽

Cited By ~ 36

Author(s):

Verle E. Headings ◽

Paul A. Rondell ◽

David F. Bohr

Keyword(s):

Carotid Artery ◽

Potassium Concentration ◽

Chloride Concentration ◽

Chloride Content ◽

Krebs Solution ◽

Artery Wall ◽

Sodium Potassium ◽

Inulin Space ◽

Excess Sodium ◽

Total Sodium

Analyses were made of total sodium, potassium and chloride content and of inulin space in dog carotid artery. The Ki/Ko gradient was found to be 125/4. Sodium space calculated from these analyses is larger than total hydration, thus precluding calculation of the Nai/No gradient. It is postulated that the excess sodium is associated with the mucopolysaccharides present in the interstitial spaces of the artery wall media. This associated sodium is readily replaced during 3-minute incubation of the artery wall media in Krebs' solution in which either the hydrogen or the potassium concentration is increased. It appears improbable that the majority of the excess sodium can be attributed to a Donna equilibrium since chloride concentration in the incubated tissue is much greater than that calculated to be required for this equilibrium.

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