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Urinary exoglycosidases, reference values in healthy children.
Advances in Medical Sciences 2018 Februrary 6
PURPOSE: The purpose of the study was to determine the effect of age on lysosomal exoglycosidase activities: α-fucosidase, β-galactosidase, β-glucuronidase and α-mannosidase in healthy children and adolescents.
MATERIAL AND METHODS: Urine samples were collected from 203 healthy children and adolescents (girls = 99, boys = 104), aged six months to 17.9 years. The activities of α-fucosidase, β-galactosidase, β-glucuronidase and α-mannosidase were determined by colorimetric method and expressed in pKat/μg of creatine (pKat/μg Cr.).
RESULTS: Urinary α-fucosidase, β-galactosidase, β-glucuronidase and α-mannosidase activities (pKat/μg Cr.) were the highest in children below 3 years of age in comparison to the remaining age groups. There was a statistically significant negative correlation between urinary α-fucosidase, β-galactosidase, β-glucuronidase and α-mannosidase (pKat/μg Cr.) and age (r = -0.36; r = -0.36; r = -0.35; r = -0.35; at p < 0.0001, respectively). In addition, we constructed the reference values for urinary activity of α-fucosidase, β-galactosidase, β-glucuronidase and α-mannosidase (pKat/μg Cr.) in percentiles according to age in 3-year intervals.
CONCLUSIONS: Our study is the first to show reference values for urinary α-fucosidase, β-galactosidase, β-glucuronidase and α-mannosidase in children and adolescents.
MATERIAL AND METHODS: Urine samples were collected from 203 healthy children and adolescents (girls = 99, boys = 104), aged six months to 17.9 years. The activities of α-fucosidase, β-galactosidase, β-glucuronidase and α-mannosidase were determined by colorimetric method and expressed in pKat/μg of creatine (pKat/μg Cr.).
RESULTS: Urinary α-fucosidase, β-galactosidase, β-glucuronidase and α-mannosidase activities (pKat/μg Cr.) were the highest in children below 3 years of age in comparison to the remaining age groups. There was a statistically significant negative correlation between urinary α-fucosidase, β-galactosidase, β-glucuronidase and α-mannosidase (pKat/μg Cr.) and age (r = -0.36; r = -0.36; r = -0.35; r = -0.35; at p < 0.0001, respectively). In addition, we constructed the reference values for urinary activity of α-fucosidase, β-galactosidase, β-glucuronidase and α-mannosidase (pKat/μg Cr.) in percentiles according to age in 3-year intervals.
CONCLUSIONS: Our study is the first to show reference values for urinary α-fucosidase, β-galactosidase, β-glucuronidase and α-mannosidase in children and adolescents.
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