Urinary 24-hour copper excretion at the time of diagnosis in children with Wilson's disease.

Aksu A. U., Sari S., EĞRİTAŞ GÜRKAN Ö., Dalgic B.

Acta gastro-enterologica Belgica, cilt.81, sa.3, ss.410-414, 2018 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 81 Sayı: 3
  • Basım Tarihi: 2018
  • Dergi Adı: Acta gastro-enterologica Belgica
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
  • Sayfa Sayıları: ss.410-414
  • Anahtar Kelimeler: 24-hour urinary copper, ceruloplasmin, screening practices, receiver operating characteristic curves, CRITERIA
  • Gazi Üniversitesi Adresli: Evet

Özet

The optimal cut-off value of 24-hour (h) urinary copper (Cu) levels to identify Wilson's disease (WD) has not been widely studied in children. In sixty-six children with confirmed WD and 88 children without WD, 24-h urinary excretion of Cu at the time of diagnosis was studied. The receiver operating characteristic (ROC) curves revealed that the optimal cut-off value of urinary Cu to identify WD was 70 mcg [area under the curve (AUC) = 0.894] with a sensitivity and specificity of 81.8% and 89.8%, respectively. When the serum ceruloplasmin level was <20 mg/dl and the 24-h urinary excretion of Cu was >70 mcg, the sensitivity was 75.8%, and the specificity was 97.7%. After the exclusion of cholestatic patients, the ROC curves revealed that the optimal cut-off value for 24-h urinary Cu excretion was 55 mcg (AUC = 0.910) with a sensitivity and specificity of 83.3% and 90.3%, respectively. When the ceruloplasmin level was <20 mg/dl and the 24-h urinary Cu excretion was >55 mcg, the sensitivity and specificity were 77.3% and 98.4%, respectively.