[The value of kidney function tests performed in the course of essential arterial hypertension].
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Twenty-two patients with prolonged acute renal failure (ARF), successfully treated by haemodialysis, were analysed. The clinical course was oliguric in 16 and non-oliguric in 6 cases. Twenty-seven haemodialyses on average (15-54) during a mean duration of 66.9 (30-172) days were needed for recovery of kidney function. Overall, maximum improvement of renal function was achieved within 116.4 (51-259) days, in oligo-anuric cases within 80.1 (51-208) days, in non-oliguric cases within 160.3 (90-259) days. In the latter group pre-existing renal damage was probably the cause of the more extended duration of acute renal failure.
The changes of kidney metabolism, function and enzymuria activity of nephron epithelium cells after 4 days of parenteral administration of sodium hypochlorite 0.02% and 0.06% solutions were investigated in the experiments on 15 intact non-inbred rats of 200-280 g body weight. It was revealed that sodium hypochlorite induced metabolic damage to the kidney similar to ischemic one. The 0.02 and 0.06% solutions of sodium hypochlorite administered parenterally produced no negative effect on renal function. There was no significant rise of enzymuria activity in experimental groups compared to the controls. Moreover, enzymuria of four from six nephron epithelium cell enzymes decreased significantly to day 5 of the experiment. Metabolic damage and enzymuria activity changes were more pronounced in rats given parenteral 0.06% solution of sodium hypochlorite.
Purpose of the study was to investigate the effects of daily oral feeding 15% of powdered leaves of Murraya koeingii (MK) (commonly called as Curry patta) and 10% powder of seeds of Brassica juncea (BJ) (commonly called as Rai) for 60 days on serum glucose concentrations and kidney functions in streptozotocin (STZ; 100mg/kg) diabetic rats. Serum glucose levels, body weight, urine volume, serum creatinine, and urinary albumin (UAE) levels were monitored on day 0, 10, 25, 40, and 70 of the experiment. After 60 days of STZ administration, urine volume per day and UAE levels were significantly higher (P<0.0005) in diabetic controls (DC) as compared to normal controls (NC). Although feeding of the MK/BJ showed a trend towards improvement in most of the parameters, results were not statistically different from the DC except in serum creatinine values in BJ-fed rats on day 70. Thus, these plants can be best utilized by promoting them as preferable food adjuvants for diabetic patients.
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Pharmacokinetic properties of a new angiotensin-converting enzyme inhibitor, delapril (CV-3317), which converts to two active metabolites (M-1 and M-2) and one inactive metabolite (M-3) after oral administration, were investigated in six subjects with normal, 10 subjects with slight (SRF), and six subjects with markedly (MRF) deteriorated kidney function. The elimination half-life of M-1 was prolonged significantly in subjects with MRF and that of M-3 was also prolonged in subjects with SRF or MRF. The peak plasma drug concentration, time to reach peak concentration (tmax), and AUC were significantly larger in subjects with SRF and MRF than in normal subjects, except for Tmax in subjects with SRF. In M-2 and unchanged delapril, no difference was observed. The 24-hour cumulative urinary excretion of those metabolites was significantly lower in subjects with MRF than in normal subjects. Plasma angiotensin-converting enzyme activity, suppressed at 4 hours in all subjects, remained significantly low in patients with MRF at 24 hours. Blood pressure was reduced more in subjects with chronic renal failure. It was concluded that delapril is excreted mainly through the kidney and its pharmacodynamics and biologic effects are affected by the renal dysfunction.
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Acute intravenous amino acid infusion or a high-protein diet increases renal plasma flow and the glomerular filtration rate in healthy subjects. Conversely, a low-protein diet reduces renal plasma flow and glomerular filtration rate. The aim of this study was to investigate the effect of intravenous amino acid infusion and dietary proteins on kidney function in cirrhosis. Protocol 1: renal plasma flow and glomerular filtration rate were measured before and during intravenous administration of a 10% amino acid solution (0.043 ml/kg/min) to eight compensated cirrhotic patients (group 1), nine nonazotemic cirrhotic patients with ascites (group 2) and seven cirrhotic patients with ascites and functional renal failure (group 3). Amino acid administration induced a significant increase in renal plasma flow and glomerular filtration rate in all groups studied. Renal plasma flow and glomerular filtration rate increased by 16% and 14%, respectively, in group 1; 31% and 22% in group 2 and 25% and 21% in group 3. Protocol 2: Renal plasma flow and glomerular filtration rate were measured in nine cirrhotic patients with ascites after 11 days on a low-protein diet (0.5 gm/kg body weight/day) and also after the patients followed for 11 days a moderately high-protein diet (1.5 gm/kg body weight/day). The moderately high-protein diet was associated with a significant increase in renal plasma flow (12%) and glomerular filtration rate (13%) compared with values obtained while the patients followed the low-protein diet. Plasma glucagon levels increased markedly during the intravenous administration of amino acid and the intake of the moderately high-protein diet.(ABSTRACT TRUNCATED AT 250 WORDS)
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