The Effect of Anticonvulsants on Serum Copper and Zinc Concentrations

항경련제가 혈청 구리와 아연 농도에 미치는 영향

  • Jeong, Hee Jeong (Department of Pediatrics, College of Medicine, Chungnam National University) ;
  • Youn, Hye Won (Department of Pediatrics, College of Medicine, Chungnam National University) ;
  • Lee, Keon Su (Department of Pediatrics, College of Medicine, Chungnam National University)
  • 정희정 (충남대학교 의과대학 소아과학교실) ;
  • 윤혜원 (충남대학교 의과대학 소아과학교실) ;
  • 이건수 (충남대학교 의과대학 소아과학교실)
  • Received : 2004.09.22
  • Accepted : 2004.12.13
  • Published : 2005.04.15

Abstract

Purpose : Anticonvulsants have a number of side effects and some of them may be attributed to a disturbance of serum trace metal homeostasis. Although they are minor building components in tissues, they play important functional roles in the peripheral and central nervous system. We measured serum copper and zinc levels in epileptic children who were treated with anticonvulsants to know the effects of anticonvulsants on serum copper and zinc levels. Methods : Serum copper and zinc levels were determined in 64 epileptic patients receiving anticonvulsant therapy in Chungnam National University Hospital, and in 20 normal controls. Sixty-four epileptic patients were divided into three groups : 16 patients who were treated with valproic acid monotherapy; 26 patients who were treated with valproic acid in addition to other anticonvulsants; and 22 patients who were treated with anticonvulsants except for valporic acid. Results : All patients receiving anticonvulsants had significantly lower serum copper levels($80.21{\pm}19.42{\mu}g/dL$) in comparison to the normal controls($102.12{\pm}32.8{\mu}g/dL$). Serum zinc levels in patients receiving anticonvulsants($79.78{\pm}21.88{\mu}g/dL$) were not statistically different from those of controls ($85.26{\pm}29.81{\mu}g/dL$). There were no significant difference of serum copper and zinc levels among the three groups. Conclusion : In this study, we clearly showed that anticonvulsants decreased serum copper levels. Although we did not observe any clinical findings related to copper deficiency, we should pay attention to potent copper deficiency in patients with anticonvulsant treatment.

목 적 : 항경련제는 여러 가지 부작용을 갖고 있으며, 그 중 일부는 혈청 내 미량 원소의 항상성 장애이다. 미량 원소는 신체 내에 낮은 농도로 존재하며, 조직의 작은 부분을 구성하지만 중추와 말초 신경계에서 중요한 역할을 한다. 저자들은 6개월 이상 항경련제를 복용하고 있는 간질 환아의 혈청 구리와 아연농도를 측정하여 항경련제가 신체 내 미량 원소의 항상성에 미치는 영향을 알아보고자 하였다. 방 법 : 1997년 1월부터 2003년 12월까지 충남대학교병원 소아과에서 간질 진단 하에 항경련제를 복용 중인 환아 64명(남 : 29, 여 : 35)과 정상 대조군 20명(남 : 12, 여 : 8)을 대상으로 하였고 정맥혈을 채취하여 혈청 구리와 아연의 농도를 측정하였다. 항경련제를 복용하고 있는 간질 환아 군을 VPA 단일 복용군, VPA를 포함하는 복합 복용군, VPA 외의 항경련제 복용군의 세 군으로 나누어 비교하였다. 결 과 : 혈청 구리 농도는 VPA 단일 복용군에서 $81.56{\pm}20.92{\mu}g/dL$, VPA를 포함하는 복합 복용군에서 $80.89{\pm}19.31{\mu}g/dL$, VPA 외의 항경련제 복합 복용군에서 $82.14{\pm}25.74{\mu}g/dL$로서 세 군 모두 대조군의 혈청 구리 농도 $102.13{\pm}32.80{\mu}g/dL$에 비하여 유의하게 낮은 양상을 보였다(P<0.05). 혈청 아연 농도는 항경련제 종류에 따라 분류한 상기 세 군에서 대조군보다 낮았으나, 유의한 차이는 없었다(P>0.05). 혈청 구리와 아연 농도는 항경련제의 종류 및 복용 기간에 의한 차이를 보이지 않았다(P>0.05). 결 론 : 항경련제 복용 환아군에서 정상 대조군보다 혈청 구리의 농도는 유의하게 낮았고, 혈청 아연의 농도는 정상 대조군과 유의한 차이를 보이지 않았다. 항경련제로 치료받는 간질 환아의 경우 혈청 구리 농도가 낮아질 수 있다.

Keywords

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