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pH is one of the most important physiological parameters, with its changes affecting the function of vital organs like the heart. However, the effects of alkalosis on the regulation of cardiac myocyte function have not been extensively investigated. Therefore, we decided to study whether the mitogen-activated protein kinase (MAPK) signaling pathways [c-Jun NH2-terminal kinases (JNKs), extracell...

To the Editor:—Metabolic alkalemia is the most common acid–base disturbance among patients in the hospital. Because the disorder is associated with high mortality and morbidity, its prompt diagnosis and treatment is feasible. The expected physiologic compensation for a primary increase in serum bicarbonate concentration ([HCO3 ]), i.e., metabolic alkalosis, is hypoventilation that increases par...

Hypobaric hypoxia causes hypocapina and alkalosis, hemoconcentration and increased hematocrit, and a decreased cardiac stroke volume. To assess the role of the hypocapnic alkalosis in causing these other changes, five men were exposed to hypobaric hypoxia at a barometric pressure (PB) of 440 torr with an alveolar O2 tension of 55 torr for 5 days with 3.77% CO2 added to the atmosphere to prevent...

Objective. Cyclosporine (CsA) causes tubular dysfunction characterized by polyuria, calcium wasting, distal tubular acidosis, and hyperkalemia. The hypercalciuria induced by CsA administration is associated with an inhibition of calbindin D28k expression. It has also been shown that chronic metabolic alkalosis increased the expression of Ca transport proteins accompanied by diminished urine Ca ...

A case of a 66-year-old white man with recent onset of oedema, hypertension, metabolic alkalosis and profound hypokalaemia is described. The initial laboratorial workup showed that urinary chloride concentration and potassium excretion were increased, suggesting a state of hyperaldosteronism. Nonetheless, renin activity was low and aldosterone levels were normal. The metabolic alkalosis seen in...

Stewart's quantitative physical chemical approach enables us to understand the acid-base properties of intravenous fluids. In Stewart's analysis, the three independent acid-base variables are partial CO2 tension, the total concentration of nonvolatile weak acid (ATOT), and the strong ion difference (SID). Raising and lowering ATOT while holding SID constant cause metabolic acidosis and alkalosi...

We undertook the present study to examine the acid-base and electrolyte disturbances in relation to hydration status in patients with diabetic ketoacidosis (DKA). A total of 40 insulin-dependent diabetes mellitus patients (22 male, 18 female), aged 18-61 years with DKA admitted to our hospital during the last 2 years, were studied. The duration of diabetes averaged 9 +/- 2 years. In all cases a...