건강한 성인남녀의 맥압과 인슐린 양 성장인자-1의 연관성
The Relation of Pulse Pressure to Insulin-like Growth Factor (IGF)-1
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연구배경: 맥압은 혈관 강직도의 임상적 지표로 심혈관계 질환의 강력한 예측인자이며, 혈관의 노화를 반영한다. 인슐린 양 성장인자-1은 성장 호르몬 분비의 지표이며 성장 호르몬 분비능 저하가 노화와 관련되어, 이것의 감소가 맥압에 영향을 줄 수 있을 것으로 생각된다. 이에 본 연구는 맥압과 인슐린 양 성장인자-1의 연관성에 대해 알아보고자 하였다. 방법: 검사결과와 병력상 건강한 성인 374명을 대상으로 체질량지수, 혈압, 인슐린 양 성장인자-1, 중성지방, 총콜레스테롤, 고밀도 지단백, 공복 혈당 등을 측정하여 맥압과의 상관성을 피어슨 상관법과 다중회귀분석법으로 분석하였다. 결과: 남자에서 맥압은 나이(r=0.29, P<0.001), 수축기 혈압(r=0.70, P<0.001), 이완기 혈압(r=0.22, P=0.003), 체질량지수(r=0.28, P<0.001)와 양의 상관 관계를, 인슐린 양 성장인자-1과는 음의 상관 관계를 보였다(r=-0.27, P<0.001). 여자에서 맥압은 수축기 혈압(r=0.64, P<0.001), 체질량지수(r=0.27, P<0.001), 중성지방(r=0.19, P=0.011), 총콜레스테롤(r=0.15, P=0.049), 공복 혈당(r=0.17, P=0.027)과 양의 상관 관계를 보였으며, 나이, 이완기 혈압, 인슐린 양 성장인자-1과는 유의한 상관 관계를 보이지 않았다. 나이, 체질량지수, 중성지방, 총콜레스테롤, 공복 혈당을 보정하여 다중 회귀 분석시 남자에서는 인슐린 양 성장인자-1이 증가함에 따라 맥압이 감소하였으나(β=-6.052, P=0.007), 여자에는 독립적인 영향을 끼치지 않았다. 단계적 회귀 분석시 남자에서 인슐린 양 성장인자-1(R2=0.004, P=0.003)이 나이, 체질량지수에 이어 세번째로 영향력이 있었다. 결론: 건강한 성인 남자에서 인슐린 양 성장인자-1이 맥압과 독립적으로 음의 상관 관계가 있음을 알 수 있었다.
Abstract
THe Relation of Pulse Pressure to Insulin- like Growth Factor (IGF)-1Jung Ha Kim, M.D., Eun Ju Hwang, M.D., Sang Hwan Kim, M.D., Hye Ree Lee, M.D., and Duk Chul Lee, M.D.†
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