{"title":"Could Urinary Copper/Zinc Ratio Be a Newer Tool to Replace 24-Hour Urinary Copper Excretion for Diagnosing Wilson Disease in Children?","authors":"Fahmida Begum, Khan Lamia Nahid, Tahmina Jesmin, Md Wahiduzzaman Mazumder, Md Rukunuzzaman","doi":"10.5223/pghn.2024.27.1.53","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose: </strong>Although the 24-hours urinary copper excretion is useful for the diagnosis of Wilson disease (WD), there are practical difficulties in the accurate and timed collection of urine samples. The purpose of this study was to verify if the spot morning urinary Copper/ Zinc (Cu/Zn) ratio could be used as a replacement parameter of 24-hours urinary copper excretion in the diagnosis of WD.</p><p><strong>Methods: </strong>A cross-sectional study was conducted at the Department of Pediatric Gastroenterology and Nutrition, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh, from June 2019 to May 2021 on 67 children over three years of age who presented with liver disease. Twenty-seven children who fulfilled the inclusion criteria for WD were categorized into the test group, and the remaining forty children were considered to have non-Wilsonian liver disease and were categorized into the control group. Along with other laboratory investigations, spot morning urinary samples were estimated for the urinary Cu/Zn ratio in all patients and were compared to the 24-hour urinary copper excretion. The diagnostic value of the Cu/Zn ratio was then analyzed.</p><p><strong>Results: </strong>Correlation of spot morning urinary Cu/Zn ratio with 24-hours urinary copper excretion was found to be significant (r=0.60). The area under ROC curve with 95% confidence interval of morning urinary Cu/Zn ratio measured using 24-hours urine sample was 0.84 (standard error, 0.05; <i>p</i><0.001).</p><p><strong>Conclusion: </strong>Spot morning urinary Cu/Zn ratio seems to be a promising parameter for the replacement of 24-hours urinary copper excretion in the diagnosis of WD.</p>","PeriodicalId":19989,"journal":{"name":"Pediatric Gastroenterology, Hepatology & Nutrition","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10796261/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Pediatric Gastroenterology, Hepatology & Nutrition","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5223/pghn.2024.27.1.53","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/1/9 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"PEDIATRICS","Score":null,"Total":0}
引用次数: 0
Abstract
Purpose: Although the 24-hours urinary copper excretion is useful for the diagnosis of Wilson disease (WD), there are practical difficulties in the accurate and timed collection of urine samples. The purpose of this study was to verify if the spot morning urinary Copper/ Zinc (Cu/Zn) ratio could be used as a replacement parameter of 24-hours urinary copper excretion in the diagnosis of WD.
Methods: A cross-sectional study was conducted at the Department of Pediatric Gastroenterology and Nutrition, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh, from June 2019 to May 2021 on 67 children over three years of age who presented with liver disease. Twenty-seven children who fulfilled the inclusion criteria for WD were categorized into the test group, and the remaining forty children were considered to have non-Wilsonian liver disease and were categorized into the control group. Along with other laboratory investigations, spot morning urinary samples were estimated for the urinary Cu/Zn ratio in all patients and were compared to the 24-hour urinary copper excretion. The diagnostic value of the Cu/Zn ratio was then analyzed.
Results: Correlation of spot morning urinary Cu/Zn ratio with 24-hours urinary copper excretion was found to be significant (r=0.60). The area under ROC curve with 95% confidence interval of morning urinary Cu/Zn ratio measured using 24-hours urine sample was 0.84 (standard error, 0.05; p<0.001).
Conclusion: Spot morning urinary Cu/Zn ratio seems to be a promising parameter for the replacement of 24-hours urinary copper excretion in the diagnosis of WD.
期刊介绍：
Pediatric Gastroenterology, Hepatology and Nutrition (Pediatr Gastroenterol Hepatol Nutr), an official journal of The Korean Society of Pediatric Gastroenterology, Hepatology and Nutrition, is issued bimonthly and published in English. The aim of Pediatr Gastroenterol Hepatol Nutr is to advance scientific knowledge and promote child healthcare by publishing high-quality empirical and theoretical studies and providing a recently updated knowledge to those practitioners and scholars in the field of pediatric gastroenterology, hepatology and nutrition. Pediatr Gastroenterol Hepatol Nutr publishes review articles, original articles, and case reports. All of the submitted papers are peer-reviewed. The journal covers basic and clinical researches on molecular and cellular biology, pathophysiology, epidemiology, diagnosis, and treatment of all aspects of pediatric gastrointestinal diseases and nutritional health problems.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
