ApoB-100 carrying lipoprotein, but not apoB-48, is the major subset of proatherogenic remnant-like lipoprotein particles detected in plasma of sudden cardiac death cases

Katsuyuki Nakajima, Yasuhiro Nakajima, Sanae Takeichi, Masaki Q. Fujita

研究成果: Article査読

16 被引用数 (Scopus)

抄録

We have previously reported that plasma levels of remnant-like lipoprotein particles (RLP) significantly increased in sudden cardiac death cases with and without coronary atherosclerosis. In this study we have elucidated the major subset of proatherogenic RLP, containing both apoB-48 and apoB-100-carrying remnants, in plasma of SCD and control death cases. One hundred and sixty seven Japanese cases of sudden cardiac death and 78 cases of control death underwent autopsy within 12 h after death were studied. Heart weight was 9.2% higher in SCD cases than controls (P < 0.05). Moreover 57.5% or 96/167 of the cases had more than grade (2+) coronary atherosclerosis versus 21.8% or 17 of 78 controls (P < 0.01). Approximately 2/3 of the cases had full stomach, reflecting the postprandial state at the time of death. Plasma TC, TG, VLDL-C, LDL-C were significantly elevated (P < 0.001) together with RLP-C (P < 0.01), RLP-TG (P < 0.005) in SCD cases. Plasma RLP-apoB-100 levels were significantly elevated in SCD (P < -0.001), but apoB-48 levels were not. The median ratio of apoB-100/apoB-48 in RLP was 7.1 in SCD. The median RLP-TG/RLP-C ratio was 4.7, which suggested a large VLDL size. When apoB-48 and apoB-100 in RLP were divided into two groups, above and below the median level, respectively, apoB-48 inversely correlated with RLP-C (P < 0.05) and RLP-TG (P < 0.01), while apoB-100 in RLP positively correlated with RLP-C (P < 0.01) in SCD cases. In conclusion, these results indicated that apoB-100 carrying lipoproteins, not apoB-48 carrying lipoproteins, were the major subset of RLP associated with sudden cardiac death in the postprandial state, regardless to the severity of coronary atherosclerosis.

本文言語English
ページ(範囲)473-482
ページ数10
ジャーナルAtherosclerosis
194
2
DOI
出版ステータスPublished - 2007 10

ASJC Scopus subject areas

  • 循環器および心血管医学

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