Effects of growth hormone treatment on glucose metabolism in idiopathic short stature

특발성 저신장증 환자에서 성장 호르몬 투여가 당 대사에 미치는 영향

  • Kwon, Seung Yeon (Department of Pediatrics, Yonsei University College of Medicine) ;
  • Kim, Duk-Hee (Department of Pediatrics, Yonsei University College of Medicine) ;
  • Kim, Ho-Seong (Department of Pediatrics, Yonsei University College of Medicine)
  • 권승연 (연세대학교 의과대학 소아과학교실) ;
  • 김덕희 (연세대학교 의과대학 소아과학교실) ;
  • 김호성 (연세대학교 의과대학 소아과학교실)
  • Received : 2006.02.17
  • Accepted : 2006.03.27
  • Published : 2006.06.15

Abstract

Purpose : To study the effects of growth hormone(GH) treatment on glucose metabolism and insulin resistance in children with idiopathic short stature(ISS). Methods : Glucose and insulin concentrations were measured during oral glucose tolerance test (OGTT) before and after GH treatment(0.6-0.7 IU/kg/week) in 20 patients with ISS. Insulin resistance was assessed by homeostasis model assessment(HOMA). Results : During OGTT, the mean blood glucose level did not show any significant changes after GH treatment. However, mean blood insulin levels of fasting and 30 minutes of OGTT showed significant increases after GH treatment, accompanying significant increases of insulin resistance. There was no difference in change of glucose, insulin levels and insulin resistance before and after GH treatment between two groups of body mass indices(BMI) of 25< and >25. There also was no significant difference between two groups of with and without family histories of diabetes mellitus (DM). There was no case of newly developed impaired glucose tolerance, fasting glucose tolerance, nor newly developed DM. Conclusion : GH treatment with doses of 0.6-0.7 IU/kg/week for mean 9.6 months in patients with ISS did not show any significant changes in blood glucose levels during OGTT. However, GH treatments induced considerably higher fasting insulin levels compared to pretreatment, resulting in statistically higher insulin resistance. Higher BMI and family history of DM did not induce any significant changes in glucose, insulin level and insulin resistance after GH treatment than the other groups.

목 적 : 성장 호르몬은 탄수화물 대사에 항 인슐린 작용을 나타내어 혈당을 상승시키는 작용을 하는 것으로 알려져 있으며, 최근 성장 호르몬 결핍이 없는 환자에서의 성장 호르몬 투여로 인한 초 생리적 농도의 성장 호르몬 투여가 당 항상성 및 인슐린 저항성의 변화를 초래하리라는 우려가 생기고 있다. 저자들은 특발성 저신장증으로 진단 받은 환아들을 대상으로 성장 호르몬 투여 전후에 경구 당 부하검사 및 인슐린 농도 검사를 시행하여 성장 호르몬 투여가 당 대사 및 인슐린 저항성에 미치는 영향에 대하여 알아보고자 하였다. 방 법 : 특발성 저신장증으로 진단되어 성장 호르몬 치료를 시작한 환아 20명에서 성장 호르몬 투여(0.6-0.7 IU/kg) 전후에 경구 당 부하 검사 및 인슐린 농도 검사를 시행하여 혈당, 인슐린 농도의 변화 및 인슐린 저항성의 변화를 분석하였다. 또한 비만 및 당뇨병의 가족력 유무에 따른 집단간의 혈당, 인슐린 농도 및 인슐린 저항성의 변화를 분석하였다. 결 과 : 성장 호르몬 투여 전후의 경구 당 부하 검사 결과 공복, 당 부하 30분 및 2시간의 혈당은 치료 전과 비교하여 의미있는 변화를 보이지 않았으나(P>0.05), 공복 및 당 부하 30분 인슐린 농도 및 인슐린 저항성은 성장 호르몬 투여 후에 투여 전보다 의미 있게 증가하였다(P=0.0001, P=0.02, P=0.01). 비만과 당뇨병의 가족력을 가진 환아들에서 성장 호르몬 투여 전후의 혈당, 인슐린 농도 및 인슐린 저항성의 변화량은 대조군과 유의한 차이를 보이지 않았다(P>0.05). 결 론 : 특발성 저신장증 환아 20명에게 평균 9.6개월 동안 성장 호르몬을 투여(0.6-0.7 IU/kg/week)한 후 분석한 결과, 성장 호르몬 투여가 혈당의 의미 있는 증가를 초래하지 않았으나, 인슐린 농도 및 인슐린 저항성을 증가시킴을 알 수 있었다. 비만이나 당뇨병의 가족력은 혈당, 인슐린 농도 및 인슐린 저항성의 변화량에 유의한 차이를 나타내지 않았으며, 향후 이에 대한 더 많은 표본수와 장기간의 추적 관찰이 필요할 것으로 생각된다.

Keywords

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