Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0403608 (ureter)
 9,655 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We reported two cases of nephrotic syndrome associated with hydronephrosis. A forty four year old male patient who suddenly complained of nephrotic syndrome, showed left hydronephrosis caused by lower ureteral stenosis. Renal biopsy specimen obtained from the right kidney revealed minor glomerular abnormalities. A sixteen year old female patient had a long history of proteinuria before the onset of nephrotic syndrome. She suffered from bilateral hydronephrosis of which the etiology was unclear. Renal biopsy specimen obtained from the left kidney revealed membranous nephropathy. Because in both cases urine samples collected from each ureter showed the presence of a massive protein, the other kidney was thought to be involved with the same disease. The association of nephrotic syndrome with hydronephrosis is extremely rare. The significance of this unusual combination was discussed with respect to the literature.
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PMID:[Two cases of nephrotic syndrome associated with hydronephrosis]. 187 63

8 cases of membranous glomerulonephritis (MG) after renal transplants (RT) are presented; one being a recurrence of the original disease and the other 7 due to a different cause of renal insufficiency. The total incidence of MG after transplantation was 1.63%; 1.39% being the incidence of MG of new cases. Only 1 patient showed decrease of renal function and in this case the MG was accompanied by chronic rejection lesions. There was no sign of neoplasias nor drugs producing MG. As far as chronic infections are concerned, only one patient showed B antigen and it was not observed during the immunofluorescent test in the biopsy. 6 patients had urological complications after the renal transplant (3 cases of urinary fistula; 2 cases of obstructive uropathy; 1 case of short ureter). 2 patients experienced the start of hemodialysis due to focal and segmentary glomerulosclerosis. The beginning of proteinuria commences between 2 and 23 months after the RT (median 13,0 +/- 7,5 moths); with a range of between 2.0 and 12.0 gr/day (median: 6.8 +/- 3,2 Z gr/day), this being nephrotic in 4 cases. Proteinuria improved 1 case, and persisted in the other patients at the same level registered previous to the diagnosis. MG is a non-frequent complication or RT and is usually benign. Patients with post-transplant urologic complications could be considered to have a higher risk of developing a MG "de novo".
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PMID:[Membranous nephritis after renal transplantation]. 189 4

A 23 year old female, born in 1957, was diagnosed as having idiopathic thrombocytopenic purpura at the age of 3 and treated with prednisolone during her childhood with no response. On her regular check-up in 1978, facial edema and proteinuria suggested renal disease. The family history was negative for bleeding diathesis or renal disease. Close examination revealed the following: WBC 4,200/microliters without leukocyte inclusions, RBC 3.42 x 10(6)/microliters, Hb 11.7 g/dl. PT 10.6 sec, APTT 28.9 sec. Platelet count 4,500/microliters by HEMATRAK 360, and 40 x 10(3)/microliters measured by microscopic method. Giant platelets were noted on peripheral blood smear with an average diameter of 6.1 microns. Bleeding time (Duke) was 12.0 min. Number of megakaryocytes was increased although platelet production was remarkably decreased. Results of platelet aggregation and retention tests were normal. Platelet life span (T1/2) was 2.3 days. Sensory neural hearing loss, congenital cataract, double ureter and short small intestine were also found. Chromosome analysis showed 46XX. She underwent splenectomy resulting in increase of the platelet count to 226 x 10(3)/microliters. The increased platelet count, however, gradually decreased to the initial count in 2 years although the bleeding tendency was improved. In 1987, renal function deteriorated, causing intractable hypertension. The serum creatinine was 4.8 mg/dl. The following year she developed cerebral bleeding and died 4 days after the episode. The serum creatinine was 8.6 mg/dl.
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PMID:[Macrothrombocytopenia with deafness, nephritis, cataract, short small intestine, and double ureter]. 221 83

Of 18 pregnancies in 11 renal transplant recipients, three were terminated and in the remaining 15 (in 8 women) there were 10 live births (including one set of twins), five intrauterine deaths, and one spontaneous abortion. Graft function deteriorated in six women, from obstruction of the transplanted ureter in two, recurrent glomerulonephritis in two, rejection in one, and pelvi-ureteric junction obstruction in one. Hypertension worsened or developed in all but one of the pregnancies and proteinuria appeared in eight. Of the 10 live births only one reached 38 weeks gestation (mean 35 weeks) and four neonates were small for gestational age. One infant died early from intraventricular hemorrhage and hyaline membrane disease, one fetus had hydrocephalus, and the others were normal. Factors associated with a poor fetal outcome were deterioration in graft function during pregnancy, pre-existing hypertension, or the development of hypertension before the third trimester.
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PMID:Problems associated with pregnancy in renal allograft recipients. 266 32

There are a number of factors that affect ureteral dilatation in patients with posterior urethral valves. These include large urinary outputs, a noncompliant bladder, and distal ureteric fibrosis. Dilatation alone does not imply obstruction, and careful studies should be obtained to document obstruction prior to considering any surgery. Our prejudice leads us to avoid ureteric reconstruction in the period immediately after valve ablation. Our findings suggest that these patients have hypertonic bladders immediately after valve ablation period, so it could be hazardous to reimplant the ureter in such a bladder and thereby expose these kidneys to unnecessary high pressures. Each patient with persistent dilatation should be treated on an individual basis. Some will require no treatment, some reimplantation with or without tailoring, and some an augmentation cystoplasty. More conservative approaches include double and triple voiding regimens, intermittent catheterization, anticholinergics, alpha sympathomimetic blockers, and regimens to decrease urinary output. These same regimens also seem to have a role in improving the level of continence, as does the onset of adolescence. Fortunately, the majority of patients with posterior urethral valves can be treated with valve ablation alone. Unfortunately, a number of patients who have creatinines of less than 1.0 mg per dl following treatment in the first year of life will go onto renal failure years later. Rapid progression to renal failure usually does not ensue until the teenage period, when proteinuria and hypertension seem to be the hallmarks. The progressive renal failure that develops in these patients may be related to the hyperfiltration syndrome that Brenner and Levine reported in patients with a decreased number of nephrons. A role for decreased intake of protein may have some influence in preserving the function of patients with a reduced number of nephrons and hopefully will affect the ultimate prognosis. The author anxiously awaits the formation and results of studies that will employ such a dietary regimen for patients with a history of severe valves in the hope of preserving renal function. However, such reports are not likely to be forthcoming during this decade.
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PMID:Current issues regarding posterior urethral valves. 388 21

The role of the kidney in the catabolism of Bence Jones proteins, intact IgG molecules, and isolated L chains, Fab and Fc fragments of IgG, was studied. The proteins were purified, radioiodinated, and their survival times measured in nephrectomized, ureter-severed, and control mice. Active endogenous catabolism was the major factor in overall Bence Jones metabolism since excretion as proteinuria accounted for less than 25% of the total metabolism. The survival times of lambda- and kappa-type human Bence Jones proteins and the Bence Jones protein produced by mice with MPC-2 plasma cell tumor were exceedingly short in both unoperated and ureter-severed mice, with 50% of the injected protein catabolized in from 0.8-1.6 hr. In contrast, the survival of Bence Jones protein was markedly prolonged in nephrectomized animals, with 50% of the injected dose catabolized in from 9 to 17 hr. This ten-fold decrease in catabolic rate indicates that the kidneys are the major site of breakdown of Bence Jones proteins. Similar studies with other proteins indicated that the kidneys are also the major site for catabolism of isolated L chains but not of intact IgG molecules. The Fc immunoglobulin fragment was not catabolized and the Fab fragment only partially catabolized by the kidney. When ureter-severed animals were allowed to develop advanced uremia before being studied, the survival of Bence Jones protein was greatly prolonged, indicating that the catabolic process is impaired in the presence of uremia. The nature of this renal catabolism remains unknown. These observations suggest that the Bence Jones proteins and L chains observed in the urine of patients may reflect only a small fraction of such molecules synthesized by these patients. Furthermore, they provide an explanation for the prolongation of Bence Jones protein survival and the development of Bence Jones proteinemia observed in subjects with multiple myeloma and impaired renal function.
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PMID:The role of the kidney in the catabolism of Bence Jones proteins and immunoglobulin fragments. 416 39

Vesicorenal reflux raises specific problems in adults, as regards both the surgical indications and the operative technique. The operative results are discussed in relation to fifty seven ureters reimplanted in thirty six patients, and the indications for surgical management are outlined. Refluxes clinically associated with lumbalgia, fever and pyuria, always require surgery. The most difficult problems arise from "asymptomatic" refluxes revealed by checkups for renal insufficiency, proteinuria or arterial hypertension. In these cases, the characteristics of the ureter (e.g. wide or narrow) and the existence or absence of renal scars must be taken into consideration. Refluxes in narrow ureters should be followed closely, and the advisability of surgery should be carefully weighed in patients with a wide ureter with no visible damage to the parenchyma.
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PMID:[Vesico-renal reflux in adults. Study of 57 ureters reimplanted by the submucosal advancement method]. 652 94

Primary vesicoureteral reflux was seen in 2 siblings in a family of 5 (1 daughter and 2 sons). Voiding cystogram of elder sister, who complained of fever and backache, showed bilateral reflux at the age of 6. Left reflux disappeared soon but right reflux persisted. Right antireflux operation was performed at the age of 9, but right renal function deteriorated gradually. Right nephrectomy was done at the age of 12 because of persistent pyuria and renal stones. The second case was her younger brother who was sent to us because of proteinuria and hypertension. Excretory urogram showed left small kidney and voiding cystogram showed bilateral reflux with moderately dilated ureter and calyceal blunting. Urinalysis revealed normal findings except for proteinuria and he had no urological symptoms. Renal angiogram and renal vein renin study were unremarkable, so bilateral antireflux operation was done. Findings of urinalysis of his parents and younger brother were normal and cystogram of his brother was normal.
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PMID:[Familial vesicoureteral reflux]. 667 4

Persistent proteinuria, chronic renal failure, and focal segmental glomerulosclerosis developed in three children with solitary kidneys. Two of these children were born with unilateral kidneys. The third had bilateral reflux and underwent a unilateral nephrectomy and reimplantation of the remaining ureter; persistent proteinuria developed 7 years later. It is postulated that hyperperfusion of a critical number of glomeruli during childhood may be the mechanism responsible for the production of focal segmental glomerulosclerosis in these patients.
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PMID:Focal segmental glomerulosclerosis and progressive renal failure associated with a unilateral kidney. 672 82

Urinary tract infection by Staphylococcus saprophyticus was provoked in two female grivet monkeys. A non-hemagglutinating strain of S. saprophyticus was injected into the renal pelvis of one of the animals (monkey I), while in the other (monkey II), a hemagglutinating strain of the same species was inoculated into the bladder by suprapubic puncture. In monkey I, massive hematuria and proteinuria were demonstrated during the post-inoculation (p.i.) week, after which the monkey was killed. In monkey II, which was killed after 2 weeks, hematuria and proteinuria were present during the first 5 p.i. days. In both monkeys, S. saprophyticus was isolated in numbers < 10(5) bacteria/ml bladder urine on each p.i. day. Autopsy of monkey I revealed acute pyelonephritis and inflammatory changes in the ureter on the same side on which S. saprophyticus had been inoculated. In monkey II, both kidneys were enlarged and there were signs of acute pyelonephritis. The histopathological examination revealed microabscesses, interstitial infiltration and numerous leukocytes in the tubules. Both the ureters of monkey II were congested and microscopically an acute inflammatory reaction was found. Inflammatory signs were also present in the bladder. Scanning electron microscopy revealed cocci adhering to the epithelial lining of the urinary tract.
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PMID:Experimental acute pyelonephritis in grivet monkeys, provoked by Staphylococcus saprophyticus. 741 43


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