Drugs online research references
Clin Nephrol. 1996 Nov;46(5):306-11.
Focal segmental glomerulosclerosis in adult African Americans.
Bakir AA, Share DS, Levy PS, Arruda JA, Dunea G.
Division of Nephrology, Cook Country Hospital, Chicago, Illinois 60612, USA.
We have previously shown that idiopathic focal segmental glomerulosclerosis (FSGS) is the most common non-proliferative primary glomerulopathy in adult African Americans. In this report we present our experience with treated FSGS in 15 such patients followed over five years. They were all treated with prednisone 60 mg daily for three months, followed by a slow tapering. In addition, two patients later had cyclophosphamide, and five had enalapril. At entry hypertension was present in 73% of the patients, nephrotic syndrome in 87%, and elevated serum creatinine (> or = 1.4 mg/dl) in 40%. Five of the 15 patients (33%) developed end-stage renal failure (ESRF), one of them having a "malignant" course after the advent of pregnancy. Two patients (13%) have chronic renal insufficiency (CRI; serum creatinine > 2.5 mg/dl); three (20%) have mild renal insufficiency (serum creatinine 1.4-2.5 mg/dl), and five patients (33%) have normal renal function. The cumulative renal survival was 93% at five years, but only 26% at eight years. At last follow-up all the ten patients who did not develop ESRF were in partial remission (urinary protein of 1.3 g/day +/- 1.21), but 4 of the 5 patients who did not develop ESRF had no prolonged partial remission of nephrotic syndrome. Neither the initial clinical parameters not the use of enalapril correlated with the renal outcome (univariate analysis). However, 4 of the 5 patients who developed ESRF had elevated serum creatinine at entry, versus only 2 of the 10 not developing ESRF (p = 0.09 by two-sided, and 0.045 by one-sided Fisher's exact test). We conclude that the short-term renal outcome in nephrotic adult African Americans with treated FSGS is comparable to that of the non-African Americans, but their long-term prognosis may be poorer. Patients developing ESRF were more likely to present with elevated serum creatinine. Enalapril did not seem to modify the course of renal disease, but its utility and that of other ACE inhibitors in the treatment of FSGS must await prospective randomized studies.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8953119&dopt=Abstract
Nephron. 1989;51(4):466-9.
Enalapril attenuates glomerular hyperfiltration following a meat meal.
Chagnac A, Gafter U, Zevin D, Hirsch Y, Markovitz I, Levi J.
Department of Nephrology, Hasharon Hospital, Petah-Tiqva, Tel-Aviv University Medical School, Israel.
It has been shown that the glomerular filtration rate increases after a meat meal. We examined in humans whether enalapril, which has been shown to decrease glomerular capillary pressure in rats with chronic renal failure, could attenuate the renal response to a meat meal. Twelve healthy volunteers were studied after an oral protein load, 1.5 g/kg body weight, as lean cooked beef meat, and on a separate day, after eating the same meal with prior oral intake of enalapril. On the control day, creatinine clearance increased from 114.3 +/- 4.7 before the meal to 137.1 +/- 4.7 ml/min/1.73 m2 after the meal (p less than 0.001). On the enalapril intake day, creatinine clearance increased from 113.7 +/- 5.6 before the meal to 128.3 +/- 5.8 ml/min/1.73 m2 after the meal (p less than 0.01). However, the mean increase in creatinine clearance was lower on the enalapril intake than on the control day (14.0 +/- 4.3 vs. 21.0 +/- 4.1%, p less than 0.05). Mean arterial pressure before the meal was lower on the enalapril intake day than on the control day (76.2 +/- 3.5 vs. 84.2 +/- 3.6, p less than 0.01). Likewise, postprandial mean arterial pressure was lower on the enalapril day compared with the control day (69.9 +/- 2.8 vs. 78.5 +/- 3.7, p less than 0.01). We conclude that enalapril blunts the hyperfiltration which follows a meat meal.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=2544817&dopt=Abstract
Am J Physiol. 1994 Dec;267(6 Pt 2):F917-25.
Proteinuria and impaired glomerular permselectivity in uninephrectomized fawn-hooded rats.
Oliver JD 3rd, Simons JL, Troy JL, Provoost AP, Brenner BM, Deen WM.
Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge 02139.
Previous studies of glomerular permselectivity have indicated that both size selectivity and charge selectivity changes play a role in the pathogenesis of proteinuria. In this study, we measured Ficoll sieving coefficients, hemodynamic parameters, and urinary protein excretion rates in the FHH strain of fawn-hooded rats. These animals spontaneously develop systemic and glomerular hypertension, proteinuria, and focal and segmental glomerulosclerosis at a relatively young age. Three groups of FHH rats were studied: two-kidney controls (2K), untreated uninephrectomized rats (CON-NX), and uninephrectomized rats treated with the angiotensin I converting enzyme inhibitor enalapril (ENA-NX). CON-NX rats had higher glomerular transcapillary pressures (delta P) and higher urinary excretion rates of both total protein (UpV) and albumin (UaV) than did 2K rats, whereas treatment with enalapril prevented both glomerular hypertension and the increased proteinuria. Ficoll sieving coefficients were significantly higher in both groups of NX rats compared with 2K rats only for Stokes-Einstein radii (rs) > or = 46 A. Fits of sieving data to pore models showed a small increase in the number of large, nonselective pores in NX, which was not prevented by enalapril treatment. Total clearances of Ficoll with rs = 36 A (the size of albumin) in CON-NX and ENA-NX groups were unchanged compared with 2K animals. In contrast, UaV in CON-NX rats was more than six times that of 2K and ENA-NX rats. Across groups, UpV, UaV, and the ratio (UaV)/(UpV) all correlated strongly with delta P.(ABSTRACT TRUNCATED AT 250 WORDS)
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=7810698&dopt=Abstract
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