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Biomedical subjects

F Marumo

Publications and source records attributed to F Marumo.

At least 685 records · Page 38Linked to original sources
PubMed1983

Effect of dialysis on lipid metabolism in chronic renal failure - acetate versus bicarbonate.

The effect of two dialysate buffer bases--acetate and bicarbonate - on lipid profile in chronic renal failure was studied in nine patients on maintenance hemodialysis, employing a double crossover method. The total cholesterol level and LCAT crossover method. The total cholesterol level and LCAT activity significantly decreased during acetate dialysis compared to bicarbonate dialysis (p less than 0.05), although the HDL-cholesterol level remained low during both modalities of dialysis. Other serum lipids or lipoproteins, such as triglycerides, free fatty acids, phospholipids, VLDL and LDL, showed no manifest variations relevant to the change of the dialysate buffer base. Likewise, the levels of apoproteins A and C were not significantly affected by the difference of dialysate. No evidence was obtained for a more beneficial effect of the bicarbonate dialysis compared to the acetate bath on lipid metabolism of the dialyzed patients.

Acetates↗
PubMed1982

Effects of diazoxide and hydrochlorothiazide on water permeability and sodium transport in the frog bladder.

The effects of diazoxide and hydrochlorothiazide on vasopressin-induced increments in osmotic water flow and sodium transport across the frog bladder were studied. Diazoxide enhanced the vasopressin-induced osmotic water flow of the bladder, but did not affect the cyclic AMP- or theophylline-induced water flow. Hydrochlorothiazide did not affect the vasopressin-induced water flow. Our results suggest that diazoxide increased the water flow by inhibiting the activity of phosphodiesterase in bladder epithelial cells, whereas hydrochlorothiazide did not. On the other hand, both drugs suppressed the short-circuit current of the bladder membrane and inhibited the Na,K-dependent ATPase activity of the kidney cells. These results suggest that both drugs decreased sodium transport in the bladder by inhibiting Na,K-dependent ATPase activity.

3',5'-Cyclic-AMP Phosphodiesterases↗
PubMed1982

Effects of a polyunsaturated fatty acid-rich diet on serum lipids in patients with chronic renal failure.

An abnormal level of serum lipids may be one of the major risk factors for the development of atherosclerosis in patients with chronic renal failure (CRF). In the present study, the effect of polyunsaturated fatty acid-rich and low carbohydrate diet on serum lipids and HDL-cholesterol was studied in 6 nonnephrotic and nondialyzed patients with CRF on an isocaloric basis. Serum triglycerides decreased significantly from 2.08 +/- 0.93 mmol/l (183 +/- 82 mg/dl) to 1.49 +/- 0.83 mmol/l (131 +/- 73 mg/dl) by consumption of polyunsaturated diet (p less than 0.01). The 'HDL-cholesterol ratio' increased significantly and LCAT decreased on a polyunsaturated diet. In conclusion, the consumption of a polyunsaturated fatty acid-rich diet tends to normalise increased serum triglycerides and lowered 'HDL-cholesterol ratio' in patients with CRF and may be effective for prevention of atherosclerotic vascular sequellae.

Adult↗
PubMed1981

A case of Fanconi syndrome with type 1 renal tubular acidosis.

A 32-year-old woman of Fanconi syndrome with disorders of amino acid, glucose, uric acid and phosphate reabsorption system in proximal tubule and of renal acid excretion mechanism in distal tubule was reported. By the ammonium chloride loading test, urinary pH could only be decreased by 5.9, and excretion rates of NH4+ and titratable acids were 18.9 and 31.1 mEq/min, respectively. In the bicarbonate loading test, net renal reabsorption of bicarbonate was 2.86 mEq/100 ml GFR when plasma bicarbonate concentration was 29 mEq/L, and threshold of bicarbonate excretion was 24-26 mEq/L. These results suggest that hydrogen ion excretion disorder in distal tubules exists, while bicarbonate reabsorption ability in proximal tubule is normal.

Acidosis, Renal Tubular↗
PubMed1980

Disturbances of trace element concentrations in plasma of patients with chronic renal failure.

Plasma concentrations of 6 essential trace elements were measured in undialyzed and hemodialyzed patients with chronic renal failure (CRF) and in healthy volunteers by tube-excited X-ray fluorescence analysis and atomic absorption analysis. The influences of hemodialysis on plasma concentrations of Al, Zn, Cu and Br were also studied. High plasma concentrations of Al and Cu and low concentrations of plasma Zn were found in nondialyzed patients with CRF. Plasma concentrations of Al and Cu increased and Zn and Br decreased in the hemodialyzed patients with CRF. An elevated concentration of plasma Al may be primarily caused by permeation from dialysate across the dialyzer membrane. The use of water produced by reverse osmosis will prevent the elevation of plasma Al concentration in patients with CRF.

Adult↗
PubMed1980

A multivariate factor analysis of the high plasma concentration of cyclic AMP in patients with chronic renal failure.

The concentration of cyclic AMP which is known as an intracellular mediator of hormone action increased in the plasma of patients with chronic renal failure (CRF). In the present study, the plasma concentration of cyclic AMP significantly correlated not only with serum, creatinine, and urea levels, but also with plasma PTH and glucagon in patients with CRF. Furthermore, plasma concentrations of PTH and glucagon correlated with the serum creatinine concentration to a significant extent. To discuss the cause of the increased cyclic AMP concentration in plasma of patients with CRF, multivariate analyses were carried out on the obtained clinical data from patients and normal subjects. In the factor analysis on the clinical data from 61 subjects, cyclic AMP, creatinine and BUN correlated with the first factor and PTH correlated with the second factor. The cumulative contribution ratio by the second factor was 76%. The results of the cluster analysis indicated that cyclic AMP, creatinine, and BUN formed a cluster and PTH glucagon made another cluster. These results suggest that the elevated plasma concentration of cyclic AMP in patients with CRF was mainly introduced not by overproduction but by the retention of cyclic AMP due to the decreased renal function.

Adult↗