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Connective tissue metabolism in children with chronic renal failure

To assess the characteristics of connective tissue metabolism in chronic renal failure (CRF), urinary excretion of glycosaminoglycan (GAG) fractions and hydroxyproline (HYP) was determined in ten patients with CRF and in ten age-matched healthy children. CRF was found to be associated with elevated... Full description

Journal Title: Pediatric nephrology (Berlin West), 1989, Vol.3 (2), p.179-185
Main Author: KLUJBER, L
Other Authors: TURI, S , HASZON, I , BARANYAI, Z , SULYOK, E
Format: Electronic Article Electronic Article
Language: English
Subjects:
Publisher: Heidelberg: Springer
ID: ISSN: 0931-041X
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recordid: cdi_proquest_miscellaneous_79554024
title: Connective tissue metabolism in children with chronic renal failure
format: Article
creator:
  • KLUJBER, L
  • TURI, S
  • HASZON, I
  • BARANYAI, Z
  • SULYOK, E
subjects:
  • Adolescent
  • Amino Acids - blood
  • Biological and medical sciences
  • Child
  • Connective Tissue - metabolism
  • Glycosaminoglycans - urine
  • Humans
  • Hydroxyproline - metabolism
  • Kidney Failure, Chronic - blood
  • Kidney Failure, Chronic - metabolism
  • Kidney Failure, Chronic - urine
  • Medical sciences
  • Nephrology. Urinary tract diseases
  • Nephropathies. Renovascular diseases. Renal failure
  • Renal Dialysis
  • Renal failure
ispartof: Pediatric nephrology (Berlin, West), 1989, Vol.3 (2), p.179-185
description: To assess the characteristics of connective tissue metabolism in chronic renal failure (CRF), urinary excretion of glycosaminoglycan (GAG) fractions and hydroxyproline (HYP) was determined in ten patients with CRF and in ten age-matched healthy children. CRF was found to be associated with elevated free HYP (19.9 +/- 6.1 vs 9.8 +/- 3.6 mumol/day, P less than 0.05) and depressed peptide HYP excretion (33.1 +/- 13.5 vs 225.2 +/- 17.7 mumol/day, P less than 0.01), a low rate of total GAG excretion (7.0 +/- 2.4 vs 16.1 +/- 1.9 mumol uronic acid/day, P less than 0.05) with low chondroitin 4 -sulphate + chondroitin 6 -sulphate (Ch-Ss) (14.0 +/- 9.9 vs 65.0 +/- 22.1%) and a high proportion of non-sulphated or under-sulphated fractions, i.e. hyaluronic acid + chondroitin + heparan sulphate (HA + Ch + HS) (75.3 +/- 11.4 vs 31.5 +/- 5.7%). Urinary 3-methyl-histidine (3-met-HIS) excretion and plasma essential free amino acids did not differ in the two groups. In response to haemodialysis no consistent change occurred in urinary excretion of 3-met-HIS, peptide-bound HYP, total GAG or percentage distribution of individual GAG fractions. After haemodialysis all plasma amino acids decreased significantly, and there was a significant increase in urinary excretion of free HYP (P less than 0.05). We conclude that the alterations in urinary excretion of total and individual GAGs observed in CRF may reflect disturbed connective tissue metabolism which does not appear to be accounted for by protein malnutrition or enhanced protein breakdown and remains uninfluenced by haemodialysis therapy.
language: eng
source:
identifier: ISSN: 0931-041X
fulltext: no_fulltext
issn:
  • 0931-041X
  • 1432-198X
url: Link


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descriptionTo assess the characteristics of connective tissue metabolism in chronic renal failure (CRF), urinary excretion of glycosaminoglycan (GAG) fractions and hydroxyproline (HYP) was determined in ten patients with CRF and in ten age-matched healthy children. CRF was found to be associated with elevated free HYP (19.9 +/- 6.1 vs 9.8 +/- 3.6 mumol/day, P less than 0.05) and depressed peptide HYP excretion (33.1 +/- 13.5 vs 225.2 +/- 17.7 mumol/day, P less than 0.01), a low rate of total GAG excretion (7.0 +/- 2.4 vs 16.1 +/- 1.9 mumol uronic acid/day, P less than 0.05) with low chondroitin 4 -sulphate + chondroitin 6 -sulphate (Ch-Ss) (14.0 +/- 9.9 vs 65.0 +/- 22.1%) and a high proportion of non-sulphated or under-sulphated fractions, i.e. hyaluronic acid + chondroitin + heparan sulphate (HA + Ch + HS) (75.3 +/- 11.4 vs 31.5 +/- 5.7%). Urinary 3-methyl-histidine (3-met-HIS) excretion and plasma essential free amino acids did not differ in the two groups. In response to haemodialysis no consistent change occurred in urinary excretion of 3-met-HIS, peptide-bound HYP, total GAG or percentage distribution of individual GAG fractions. After haemodialysis all plasma amino acids decreased significantly, and there was a significant increase in urinary excretion of free HYP (P less than 0.05). We conclude that the alterations in urinary excretion of total and individual GAGs observed in CRF may reflect disturbed connective tissue metabolism which does not appear to be accounted for by protein malnutrition or enhanced protein breakdown and remains uninfluenced by haemodialysis therapy.
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subjectAdolescent ; Amino Acids - blood ; Biological and medical sciences ; Child ; Connective Tissue - metabolism ; Glycosaminoglycans - urine ; Humans ; Hydroxyproline - metabolism ; Kidney Failure, Chronic - blood ; Kidney Failure, Chronic - metabolism ; Kidney Failure, Chronic - urine ; Medical sciences ; Nephrology. Urinary tract diseases ; Nephropathies. Renovascular diseases. Renal failure ; Renal Dialysis ; Renal failure
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descriptionTo assess the characteristics of connective tissue metabolism in chronic renal failure (CRF), urinary excretion of glycosaminoglycan (GAG) fractions and hydroxyproline (HYP) was determined in ten patients with CRF and in ten age-matched healthy children. CRF was found to be associated with elevated free HYP (19.9 +/- 6.1 vs 9.8 +/- 3.6 mumol/day, P less than 0.05) and depressed peptide HYP excretion (33.1 +/- 13.5 vs 225.2 +/- 17.7 mumol/day, P less than 0.01), a low rate of total GAG excretion (7.0 +/- 2.4 vs 16.1 +/- 1.9 mumol uronic acid/day, P less than 0.05) with low chondroitin 4 -sulphate + chondroitin 6 -sulphate (Ch-Ss) (14.0 +/- 9.9 vs 65.0 +/- 22.1%) and a high proportion of non-sulphated or under-sulphated fractions, i.e. hyaluronic acid + chondroitin + heparan sulphate (HA + Ch + HS) (75.3 +/- 11.4 vs 31.5 +/- 5.7%). Urinary 3-methyl-histidine (3-met-HIS) excretion and plasma essential free amino acids did not differ in the two groups. In response to haemodialysis no consistent change occurred in urinary excretion of 3-met-HIS, peptide-bound HYP, total GAG or percentage distribution of individual GAG fractions. After haemodialysis all plasma amino acids decreased significantly, and there was a significant increase in urinary excretion of free HYP (P less than 0.05). We conclude that the alterations in urinary excretion of total and individual GAGs observed in CRF may reflect disturbed connective tissue metabolism which does not appear to be accounted for by protein malnutrition or enhanced protein breakdown and remains uninfluenced by haemodialysis therapy.
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14Renal Dialysis
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abstractTo assess the characteristics of connective tissue metabolism in chronic renal failure (CRF), urinary excretion of glycosaminoglycan (GAG) fractions and hydroxyproline (HYP) was determined in ten patients with CRF and in ten age-matched healthy children. CRF was found to be associated with elevated free HYP (19.9 +/- 6.1 vs 9.8 +/- 3.6 mumol/day, P less than 0.05) and depressed peptide HYP excretion (33.1 +/- 13.5 vs 225.2 +/- 17.7 mumol/day, P less than 0.01), a low rate of total GAG excretion (7.0 +/- 2.4 vs 16.1 +/- 1.9 mumol uronic acid/day, P less than 0.05) with low chondroitin 4 -sulphate + chondroitin 6 -sulphate (Ch-Ss) (14.0 +/- 9.9 vs 65.0 +/- 22.1%) and a high proportion of non-sulphated or under-sulphated fractions, i.e. hyaluronic acid + chondroitin + heparan sulphate (HA + Ch + HS) (75.3 +/- 11.4 vs 31.5 +/- 5.7%). Urinary 3-methyl-histidine (3-met-HIS) excretion and plasma essential free amino acids did not differ in the two groups. In response to haemodialysis no consistent change occurred in urinary excretion of 3-met-HIS, peptide-bound HYP, total GAG or percentage distribution of individual GAG fractions. After haemodialysis all plasma amino acids decreased significantly, and there was a significant increase in urinary excretion of free HYP (P less than 0.05). We conclude that the alterations in urinary excretion of total and individual GAGs observed in CRF may reflect disturbed connective tissue metabolism which does not appear to be accounted for by protein malnutrition or enhanced protein breakdown and remains uninfluenced by haemodialysis therapy.
copHeidelberg
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pmid2642098
doi10.1007/BF00852905