Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “kidney function”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,639 records · Page 91Linked to original sources
PubMed1988

Single kidney function: effect of acute protein and water loading on microalbuminuria.

The hyperfiltration induced by an acute response to an oral protein and water load was investigated to ascertain whether it can modify the urinary albumin excretion (UAE) in the microalbuminuric range by further increasing the glomerular filter permeability. To this end, six patients with a single kidney selected as having microalbuminuria on a regular diet without the clinical or laboratory data of overt renal disease and eight healthy subjects received a short-term protein and water load (150 g of meat-derived protein and 1 liter of water). In patients with one kidney, mean basal UAE values were significantly higher than in control subjects (p less than 0.006), whereas endogenous creatinine clearance values were only slightly lower (p greater than 0.05). One hour after the protein and water load, an abrupt increase in microalbuminuria levels was found in patients with one kidney and mean UAE values were significantly higher than in control subjects (p less than 0.002), whereas mean creatinine clearance values were significantly lower in patients than in control subjects (p less than 0.01). High UAE (p less than 0.002) and low creatinine clearance (p less than 0.002) values were maintained over the following four hours in patients with one kidney. These data suggest that in the single kidney with reduced renal functional reserve, an oral protein and water load magnifies the pre-existing loss of glomerular permselective properties due to chronic hyperfiltration as manifested by a further increase in microalbuminuria.

Adult↗
PubMed1986

The effect of six months continuous subcutaneous insulin infusion on kidney function and size in insulin-dependent diabetics.

Glomerular filtration rate (GFR), renal plasma flow (RPF), kidney volume, and urinary albumin excretion rate were measured in 24 insulin-dependent diabetics, aged 29 +/- 7 years (mean +/- S.D.) of 8 +/- 4 years duration, randomly allocated to either continuous subcutaneous insulin infusion (CSII) (n = 12) or unchanged conventional insulin treatment (CIT) (n = 12). Glomerular filtration rate, renal plasma flow, and kidney volume were identical in the two groups at the start of the study, although significantly increased above normal values. During the 6 months CSII treatment a reduction of the GFR from 145 +/- 21 to 132 +/- 14 ml/min (2p = 2.4%) was seen, no change was observed in the CIT group while in both groups RPF and kidney volume remained unchanged. Urinary albumin excretion rate was normal or near normal in both groups and remained unchanged. Thus improved glycaemic control in insulin-dependent diabetics studied before the onset of microalbuminuria is associated with improved (reduced) GFR. Nephromegaly does not improve with 6 months CSII treatment. Whether it would improve with more prolonged treatment is uncertain.

Adult↗
PubMed2000

[Management of unilateral renal cystine calculi via percutaneous nephrolithotripsy in a child with a contralateral non-functional kidney--a case report].

A 2-year old boy visited our clinic with a chief complaint of high fever. A past history of acute renal failure due to cystine stones and cystinuria was expressed. Abdominal rentogenograms and CT demonstrated a right ureteral stone and a left renal stone. Furthermore renogram evaluation indicated non-function of the right kidney and dysfunction in the left kidney. Since right ureteral stone moved into bladder seven days post-admission, right ureteroscopy, left PNL, and cystolithotripsy were performed. Considering that right ureteral stenosis was determined by ureteroscopy, balloon dilation against the stenotic ureteral wall was performed. Left PNL and cystolithotripsy were successfully performed. No intraoperative complications occurred and no symptoms of signs of recurrence of the underlying metabolic disease were evident four months postoperatively.

Child, Preschool↗
PubMed1993

[Hypernatremia and kidney function].

Hypernatremia is caused by a water deficit. Cases with hypernatremia and dehydration appear to cluster among children and the elderly with alterations in the level of consciousness thus with no independent access to water. In general, central nervous symptoms prevail. However, thorough examination reveals impaired renal function in many such cases. Animal experiments have shown that rapid increases of the sodium concentration in the renal artery will cause a reduction of renal blood flow (RBF), glomerular filtration rate (GFR) and inhibition of renin secretion, particularly during states of sodium chloride or volume depletion (i.e. with high plasma renin activity). In any other organ hypernatremia leads to vasodilation. The kidney, however, responds with vasoconstriction which can be reversed by the adenosine antagonist theophylline. This finding led to the hypothesis that adenosine mediates the renal response to hypernatremia. Adenosine is generated by the tubules at a higher rate when the kidney is forced to reabsorb large amounts of sodium. In this concept adenosine links metabolic processes of sodium reabsorption with the regulation of organ blood flow causing vasoconstriction via adenosine receptors on the vasa afferentia. This mechanism can explain impaired renal function during acute hypernatremia. It is concluded from experimental evidence that-apart from other therapeutic measures-the recovery of impaired renal function can be improved by administration of the adenosine antagonist theophylline.

Acute Kidney Injury↗