Lipoprotein(a) in the Abdominal Aortic Aneurysmal Wall.

VernacularTitle:腹部大動脈りゅうにおける動脈壁組織Ｌｐ（ａ）の検討
Author: Hironori Arakawa ; Hajime Hirose ; Koji Matsumoto ; Masaya Shibata ; Shigeyuki Fuwa ; Mitsuru Seishima ; Yoko Yano ; Akio Noma
Publication Type:Journal Article
Keywords: lipoprotein (a)
From:Japanese Journal of Cardiovascular Surgery 1996;25(6):359-363
CountryJapan
Language:Japanese
Abstract: Lipoprotein(a) [Lp(a)] has been considered as an independent risk factor for arteriosclerotic diseases. With an anticipation that Lp(a) would also serve as a risk factor for abdominal aortic aneurysms (AAA), we analyzed serum and tissue Lp(a) levels of patients with AAA in relation to those in healthy individuals. Serum Lp(a) levels were significantly higher in the AAA group (53.2±60.8mg/dl) than in the healthy controls (14.6±13.6mg/d) (p<0.001). The Lp(a) level in the aneurysmal wall of patients with AAA was 49.8±38.2ng/mg. There was a significant correlation between serum and aneurysmal wall Lp(a) levels in AAA patients (r²=0.79, p<0.01). Immunohistochemical examination revealed Lp(a) in the extracellular matrix of the middle layer of the tunica intima, but not in the tunica media or externa.