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  • 11
    ISSN: 1432-198X
    Keywords: Congenital nephrotic syndrome ; Finnish type ; Glomerular basement membrane ; Heparan sulphate ; Heparan sulphate proteoglycan
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A decrease in the concentration of heparan sulphate proteoglycan (HSPG) in the glomerular basement membrane (GBM) is supposed to cause the increased GBM permeability in the congenital nephrotic syndrome (CNS). Therefore, we analysed the glycosaminoglycan (GAG) content and composition of the GBM and tubular basement membrane (TBM) from 3 patients with CNS of the Finnish type (FCNS) and 16 control infants. The GAG content, determined by spectrophotometric assay after papain digestion, was not significantly different in FCNS patients compared with controls. In addition, the GAG composition was comparable in the two groups, with heparan sulphate (HS) constituting at least 75% of the total GAG content. The urinary GAG content (expressed as mg GAG/mmol creatinine) was age dependent, but similar in both groups. Indirect immunofluorescence studies on kidney tissue from normal human infants, using monoclonal or polyclonal antibodies against the core protein of human GBM HSPG, showed linear staining of almost all renal basement membranes. A monoclonal antibody directed against the HS chain of HSPG showed strong GBM and a weak TBM staining. Kidney tissue from three patients with FCNS displayed no discernible differences in the distribution or quality of staining with the same antibodies. These biochemical and immunohistochemical results are in contrast to the decrease in anionic sites (by polyethyleneimine staining) and the replacement of GBM HS by chondroitin sulphate, observed by others in CNS of the diffuse mesangial sclerosis type.
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric radiology 17 (1987), S. 260-261 
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 7-year old boy with Degos-Köhlmeier disease developed renovascular hypertension. Arteriography showed peripheral occlusive arteriopathy of the left kidney as part of the Degos-Köhlmeier disease.
    Type of Medium: Electronic Resource
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  • 13
    ISSN: 1432-1076
    Keywords: Zellweger (cerebro-hepato-renal) syndrome ; Bile acid metabolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The bile acid pattern in bile and serum from two infants with the cerebro-hepato-renal syndrome of Zellweger was severely disturbed. An increased concentration particularly of trihydroxycoprostanic acid and also of dihydroxycoprostanic acid could be demonstrated. A generalized mitochondrial defect could explain these increased concentrations. This hypothesis is supported by the abnormal structure of the mitochondria in the liver biopsy of one of our patients. It is possible that the abnormal bile acids contribute to the liver damage of infants with Zellweger syndrome.
    Type of Medium: Electronic Resource
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  • 14
    ISSN: 1432-1076
    Keywords: Zellweger syndrome ; Pipecolic acid ; Peroxisomes ; Cerebro-hepato-renal syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The clinical features of 16 patients suffering from cerebro-hepato-renal syndrome are presented. Five of these children lived beyond 2 years. Four of them are still alive. The increase of pipecolic acid in serum and cerebrospinal fluid (CSF), the abnormality of the bile acids and the increased excretion of p-OH-phenyl lactate were a consistent finding. The concentration of pipecolic acid in urine was not always distinctly elevated. A loading test with DL-pipecolic acid was always abnormal.
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 143 (1984), S. 10-12 
    ISSN: 1432-1076
    Keywords: Cerebro-hepato-renal syndrome (CHR-S) ; Zellweger syndrome ; Adrenal function ; Adrenoleukodystrophy (ALD)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An ACTH stimulation test was performed in six patients suffering from the cerebro-hepato-renal syndrome of Zellweger. In contrast to controls, no rise in cortisol was observed. None of these patients showed clinical symptoms of adrenal insufficiency. The sudden death, which occurs in this syndrome, can probably be explained by an impaired stress reaction. In stress situations, such as respiratory infection, corticosteroids should be administered to these patients. A striking resemblance exists between the Zwellweger syndrome and the neonatal form of adrenoleukodystrophy.
    Type of Medium: Electronic Resource
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  • 16
    ISSN: 1432-1076
    Keywords: Renin ; Aldosterone ; Sodium restriction ; Posture ; Maturation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Plasma renin activity (PRA), aldosterone (PA), sodium and potassium concentration were measured in 107 healthy infants and children under basal conditions of normal diet and recumbency. Urinary aldosterone (UAldo), sodium and potassium were also measured (n=51). A significant (P〈0.001) age-related decrease in PRA (r=-0.67), PA (r=-0.67), and UAldo (r=-0.56) was observed, with a striking scatter of values especially in infancy. The renin-angiotensin-aldosterone system (RAAS) was also studied after stimulation by standardised sodium restriction during 4 days, followed by acute postural change (n=40). After salt restriction a rise of PRA and UAldo was noted, but a rise in PA could not be demonstrated in children aged 0–6 months. The influence of postural change on the RAAS seems more important in older children. The reported values not only in basal but also in stimulated conditions allow study of the RAAS in diseases such as salt loss and hypertension.
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 152 (1993), S. 263-264 
    ISSN: 1432-1076
    Keywords: Potassium restriction ; Calcium polystyrene sulphonate ; Chronic renal failure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Dietary potassium intake in patients with chronic renal failure is generally reduced by oral administration of potassium-binding resins. These drugs may cause disturbances of bowel function and have an unpleasant taste. Pre-treatment of drinks with these resins and their subsequent removal may prevent these inconveniences. In four formulas (whole milk, humanised infant formula, apple juice, and orange juice) we were able to lower the potassium content by 50% with calcium polystyrene sulphonate. No important increase of sodium content was observed, as was reported with the use of sodium polystyrene sulphonate. There was a, potentially beneficial, increase of the calcium concentration.
    Type of Medium: Electronic Resource
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  • 18
    ISSN: 1432-1076
    Keywords: Key words     CAPD ; Children ; Erythropoietin ; Pharmacokinetics ; Intraperitoneal administration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract      In children treated by continuous ambulatory peritoneal dialysis (CAPD) renal anaemia is preferably treated by intraperitoneal administration of erythropoietin, since subcutaneous administration is painful and frightening for the child. Pharmacokinetics of erythropoietin were studied in three groups of children treated by CAPD. In group subcutaneous (SC) (n = 5) erythropoietin was administered subcutaneously, whereas in group intraperitoneal 1 (IP1) (n = 8) and intraperitoneal 2 (IP2) (n = 8) erythropoietin was given intraperitoneally during a 12-h dwell. Group IP1 received erythropoietin in 20 ml/kg of dialysis fluid, while in group IP2 the hormone was added to only 50 ml of dialysate, irrespective of body weight. The median area under the curve (AUC) was 4064 mU ·h/ ml (range 2647–24357) in group SC, 1698 (570–5514) in group IP1 and 3577 (1225–6555) in group IP2. In comparison to group SC the AUC was significantly lower in group IP1 (Wilcoxon; P = 0.02). The difference between group SC and group IP2 was not statistically significant. Conclusion     In children on CAPD the resorption of erythropoietin after intraperitoneal administration, measured as AUC, is similar to subcutaneous administration, when erythropoietin is administered in 50 ml of dialysate. The dose needed to treat renal anaemia with erythropoietin administered intraperitoneally this way will have to be established in a therapeutic study.
    Type of Medium: Electronic Resource
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  • 19
    ISSN: 1432-1076
    Keywords: Infantile Refsum disease ; Zellweger syndrome ; Neonatal adrenoleukodystrophy ; Peroxisomal disease ; Mental retardation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Three patients affected by infantile Refsum disease are described with mental retardation, minor facial dysmorphia, chorioretinopathy, sensorineural hearing deficit, hepatomegaly, failure to thrive and hypocholesterolaemia. Initially, only an accumulation of phytanic acid was thought to be present. More recent findings showed a biochemical profile very similar to that found in classical Zellweger syndrome or neonatal adrenoleukodystrophy. Morphologically typical peroxisomes were absent in the liver. All three disorders are associated with multiple peroxisomal dysfunction. Because of these similarities pertinent clinical data of our three patients are compared with those of reported patients diagnosed as having infantile Refsum disease, neonatal adrenoleukodystrophy or Zellweger syndrome who survived for several years. Attention is drawn to the difference in severity of clinical features, ranging from infantile Refsum's disease to neonatal adrenoleukodystrophy and, finally, to Zellweger syndrome.
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 151 (1992), S. 381-383 
    ISSN: 1432-1076
    Keywords: Nephrogenic diabetes insipidus ; Platelets ; Vasopressin receptor-Kd-Bmax
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The binding of tritium-labelled arginine vasopressin to human platelet vasopressin receptors was investigated in patients with congenital nephrogenic diabetes insipidus. Binding characteristics, that is receptor affinity and the maximum number of binding sites, were not significantly different from those found in normal control individuals. The findings confirm the concept of intact V1 receptors in congenital nephrogenic diabetes insipidus. The defect in nephrogenic diabetes insipidus apparently only affects the cyclic adenosine monophosphate dependent V2 receptors.
    Type of Medium: Electronic Resource
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