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제2형 당뇨병 환자에서 혈청 라미닌 농도와 경동맥 플라크 진행의 관계

Relationship between serum laminin levels and carotid plaque progression in type 2 diabetic patients

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목적 : 제2형 당뇨병 환자의 혈관 기저막에서는 라미닌의 대사와 분포가 변화하고, 혈청 라미닌 농도의 변화는 이 조직학적 변화를 반영하므로 미세혈관병증의 지표로 유용하다고 알려져 있다. 그러나 대혈관병증에서의 라미닌의 변화와 역할에 대해서는 잘 알려져 있지 않다. 이에 본 연구자들은 제2형 당뇨병 환자를 대상으로 혈청 라미닌 농도와 경동맥 죽상동맥경화성 변화 간의 관계를 조사하여 혈청 라미닌 농도가 죽상동맥경화증의 독립적인 예측인자가 될 수 있는지와 여러 임상 변수들이 혈청 라미닌 농도에 어떤 영향을 미치는지 알아보았다. 방법 : 103명의 제2형 당뇨병 환자(51;당뇨병성 합병증이 없는 군, 52;당뇨병성 합병증이 있는 군)와 39명의 정상 대조군을 대상으로 혈청 라미닌 농도를 측정하고, 고해상도 B-mode 초음파로 양측의 내경동맥, 경동맥 팽대부, 총경동맥에서 IMT, 플라크의 수 및 점수를 측정하였다. 결과 : 혈청 라미닌 농도는 정상 대조군에 비해 합병증이 없는 제2형 당뇨병 환자군에서 합병증이 없는 군에 비해 합병증을 가진 군에서 뚜렷한 증가를 보였다(p<0.01). 합병증이 없는 군과 있는 군 간에 경동맥 IMT 측정값들, 플라크 수 및 플라크 점수는 통계적 차이가 없었다. 경동맥 측정값들과 혈장 라미닌 값 사이의 연관관계 측면에서는 총 IMT, 각 부위별 IMT 및 최대 IMT는 모두 혈청 라미닌 농도와 상관관계가 없었으나(r<0.15, p>0.05), 플라크 수와 점수는 혈청 라미닌 농도와 상관관계(r=0.24, p<0.05)를 보였다(표 3). 또한 당뇨합병증 동반 여부, 허리/엉덩이 둘레 비, 플라크 점수와 apo B가 혈청 라미닌 농도에 독립적인 영향을 미치는 것으로 나타났다.

Abstract

Background : It is well known that the presence of a tortuous radial artery, in patients undergoing transradial coronary angiography (CAG), may cause undesirable results such as access failure and arterial dissection. Thus, our aim was to investigate the prevalence and predictors of the presence of a tortuous radial artery in patients undergoing transradial CAG. Methods : We prospectively investigated the tortuosity of the radial artery in 158 consecutive patients. The tortuosity of the radial artery was determined by radial angiography. A tortuous radial artery was defined as one with a maximal angulation of more than 45 degrees. To determine the predictors of a tortuous artery, we examined clinical and intra- procedural characteristics. Results : A right radial angiography was easily performed in 154 patients (97.5%) without any complications. A tortuous radial artery was identified in 34 patients (22%). On the univariate analysis, advanced age, female gender, short stature, underweight, hypertension, and absence of progression of the mini-guide wire were significantly associated with the presence of a tortuous radial artery. Significant independent predictors of a tortuous radial artery by multivariate analysis were: advanced age, absence of progression of the mini-guide wire and hypertension. Conclusions : These data showed that the presence of a tortuous radial artery could be predicted by advanced age, absence of progression of the mini-guide wire and a history of hypertension. Thus, identification of a tortuous radial artery prior to coronary angiography may be helpful for a safe transradial CAG in patients at high risk for a tortuous radial artery.(Korean J Med 71:381-387, 2006)

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