Results 231 to 240 of about 18,414 (250)

Development of glomerular hyperfiltration, a multiphasic phenomenon

American Journal of Physiology-Renal Physiology, 2020
The trajectory of glomerular filtration rate (GFR) in relation to glomerular hyperfiltration (GHF) has been unknown. It was evaluated retrospectively in 23,982 GHF-free health examinees who were followed for 2−10 yr (mean: 5.1 yr). GFR was estimated by the serum creatinine concentration, and GHF was defined as age- and sex-specific estimated GFR (eGFR)
Yasuho Shimada, Yasuto Nakasone, Kazuko Hirabayashi, Takahiro Sakuma, Hideo Koike, Tomomasa Oguchi, Koh Yamashita, Ryo Uchimido, Tatsumi Moriya, Mitsuhisa Komatsu, Toru Aizawa   +10 more
openaire   +3 more sources

Hyperfiltration through cross-linked monolayers

Thin Solid Films, 1983
It is proposed to use cross-linked Langmuir-Blodgett (LB) films for filtration purposes, e.g. for reverse osmosis, pervaporation and gas separation, and as substrates for the incorporation of ionophors and pore molecules. Surfactants were synthesized with glucose and cellobiose residues as hydrophilic head groups. The surfactants were spread onto an
Ch. Strobl, S. Bauer, K.D. Heckmann
openaire   +2 more sources

Sodium restriction corrects hyperfiltration of diabetes

American Journal of Physiology-Renal Physiology, 1988
The effect of a low-sodium diet on the abnormal glomerular hemodynamics of early diabetes was studied in rats. Starting 5 to 7 days after onset of streptozotocin-induced insulin-dependent diabetes mellitus (IDDM), rats were fed a low-sodium diet for 4-5 days. Normal rats fed the same diet served as controls. Micropuncture measurements were made during
B. M. Wilkes, N. Bank, G. Lahorra, H. S. Aynedjian   +3 more
openaire   +3 more sources

Hyperfiltration and Calcium Metabolism in Essential Hypertension

American Journal of Hypertension, 1991
To test the hypothesis that hyperfiltration in essential hypertension is linked to alterations in calcium metabolism, we studied the relationship between urinary calcium excretion and glomerular filtration rate (GFR, creatinine clearance) in 38 untreated essential hypertensives on a free diet.
Saverio Parlongo, Daniela Leonardis, Carmine Zoccali, F. Salnitro, Francesca Mallamaci, Maurizio Postorino, Fiorella Cuzzola   +6 more
openaire   +3 more sources

Solute–membrane interactions in hyperfiltration

Journal of Applied Polymer Science, 1987
The performances of several composite membranes (PEC-1000, Teijin, HR-95, HR-98) and one asymmetric membrane (Solrox SC-200) in hyperfiltration are compared at 25°C using different aqueous feed solutions (0.1M and 0.5M NaCl, 0.5M 1,3-and 1,4-dioxan, 0.1M benzyl alcohol and 2-methoxybenzyl alcohol, 1,2- and 1,4-butandiol, and Triton feed solution).
J.-Y. Chen, W. Pusch
openaire   +2 more sources

Hyperfiltration-induced precipitation of calcite

Geochimica et Cosmochimica Acta, 1985
Abstract Hyperfiltration is sometimes cited as a mechanism to explain high degrees of calcite cementation at shale/sandstone contacts. To test this cementation mechanism, a series of experiments were performed in which solutions undersaturated with respect to calcite were hydraulically forced through a Ca-bentonite at different flow rates.
Craig D. Eady, Steven J. Fritz
openaire   +2 more sources

Streaming Potentials During Hyperfiltration [PDF]

, 1971
The theoretical and experimental studies of hyperfiltration of electrolytes through charged membranes indicate the important role of the potentials developed across the membranes. These potentials were measured directly with a pair of reversible electrodes under conditions of stationary hyperfiltration.
G.B Tanny, E. Hoffer, Ora Kedem
openaire   +1 more source

Water and Salt Transport in Hyperfiltration

1972
The impressive practical achievements of reverse osmosis have stimulated the study of thermodynamics, membrane structure, and transport mechanisms underlying this separation process. In many cases the theoretical analysis was developed for the interpretation of a specific membrane system.
openaire   +2 more sources

A critical appraisal for definition of hyperfiltration [PDF]

American Journal of Kidney Diseases, 2004
Gere Sunder-Plassmann, Walter H. Hörl
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Hyperfiltration, nitric oxide, and diabetic nephropathy

Current Hypertension Reports, 2006
Early diabetes is often accompanied by an increased glomerular filtration rate (GFR). This hyperfiltration, which is significantly dependent upon increased nitric oxide activity, is believed to contribute to progression of diabetic nephropathy. In this article, a technique for the measurement of tubular fluid nitric oxide in vivo, in real time, is ...
openaire   +3 more sources