장기간의 스테로이드 치료를 받고 있는 신병증 환아에서 Recombinant Human Growth Hormone의 효과
The Effect of Recombinant Human Growth Hormone on Growth in Children with Nephropathy Receiving Long-term Steroid Therapy
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목 적 : 성장 저하는 장기간 스테로이드 치료를 받고 있는 신 질환 환아에서 보이는 심각한 문제 가운데 하나이다. 본 저자들은 이들 환아에게 투여된 rhGH의 효과와 안정성을 알아보고자 본 연구를 계획하였다. 방 법 : 총 60명(남아 47, 여아 13)의 신 질환 환아들을 대상으로 rhGH(1 IU/kg/wk)을 1.39±1.12년간 투여하였고 환아들의 평균 나이는 11.17±2.62세였다. 환아들은 장기간 스테로이드 치료를 받고 있는 상태로 평균 스테로이드 투여 기간은 4.32±2.97년이었다. 신증후군 환아들이 32명으로 가장 많았고, IgA 신병증이 9명, 메산지움 증식성 사구체 신염이 4명의 순이었다. rhGH 투여를 전후로 성장 속도, 신장 SDS 등의 성장 지표를 구하였고 BMD 검사와 IGF-1, IGFBP-3, 일반 화학 검사들을 시행하였다. 결 과 : rhGH투여 후 성장 속도는 3.29±1.95 cm/yr에서 8.66±3.75 cm/yr으로 증가였고 신장 SDS는 rhGH 투여 전 1년간 -0.72±0.93에서 -1.04±0.86으로 악화되는 모습 보이다가 투여 시작 1년후 -0.55±0.96으로 통계적으로 의미 있게 증가되는 양상을 보였다(P<0.05). BMD는 0.71±0.14 g/cm2에서 0.79±0.16 g/cm2으로 증가하였다(P<0.05). IGF-1은 의미 있는 증가(445.09±138.01 to 506.62±181.31 ng/mL) (P<0.05)를 보였으나 IGFBP-3는 큰 차이가 없었다(4073.75±700.78 to 3933.61±789.25 ug/L, P=0.533). 결 론 : 장기간 스테로이드 치료를 받고 있는 신 질환 환아에서 rhGH의 투여는 특별한 부작용 없이 성장 속도, 신장 SDS, BMD 등의 성장 지표에 호전을 보였고 추후 보다 장기적인 rhGH의 효과와 안정성에 대한 연구가 필요할 것으로 생각된다.
Abstract
Purpose : Growth retardation is one of the serious problems in children with nephropathy requiring long-term steroid therapy. We observed the efficacy and safety of recombinant human growth hormone(rhGH) on the growth in children with long-term steroid therapy. Methods : We studied 60 children(male 47, female 13) with nephropathy who received rhGH (1 U/kg/week) for more than 0.5 years(1.39±1.12). Their mean age was 11.0 years (11.17±2.62). They received steroid therapy from January 1987 through July 2005, and the mean duration of steroid therapy was 4.32±2.97 years. Among the patients, there were 32 nephrotic syndrome, 9 IgA nephropathy, 4 mesangial proliferative glomerulonephritis, 4 focal segmental glomerulosclerosis, 2 Henoch Schönlein nephritis, 2 Alport syndrome and 7 other cases. Data were gathered on the growth parameters, such as growth velocity, height standard deviation score(SDS), IGF-1, IGFBP-3, bone mass density(BMD) and general chemistry changes. Results : Height velocity increased significantly with rhGH therapy from 3.29±1.95 to 8.66±3.75(cm/yr) and height SDS decreased from -0.72±0.93 to -1.04±0.86 at one year after steroid therapy but increased to -0.55±0.96 at one year after rhGH administration(P<0.05). BMD improved from 0.71±0.14 to 0.79±0.15 g/cm2(P<0.05). IGF-1 increased from 445.09±138.01 to 506.62±181.31 ng/mL(P<0.05). IGFBP-3 decreased from 4073.75±700.78 to 3933.61±789.25 ug/L numerically, but there was no statistically significant difference(P=0.533). Conclusion: The administration of rhGH in the short stature patients who received long-term steroid therapy showed improvement in growth parameters such as SDS, growth velocity, and BMD without significant side-effects or changes in the biochemical parameters.
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