8. 而富含甘油三脂 (TG) 的 LDL 亞組
更具有導致動脈粥樣硬化的作用機制。
Lipoproteins fall into six major classes, sorted by density and/or size, and each contains several
subclasses.
47. J Lipid Res. 1993 Oct;34(10):1687-97.
Association of plasma triglyceride concentration and LDL particle diameter, density, and chemical
composition with premature coronary artery disease in men and women.
Coresh J, Kwiterovich PO Jr, Smith HH, Bachorik PS.
刊登於 1993 年 10 月《類脂研究雜誌》的一篇論文,
約翰霍普金斯大學的研究人員對血漿中甘油三酯的濃
度和 LDL 顆粒直徑的密度和化學成分與在男性和女性
罹患
過早冠狀動脈疾病的關聯進行研究。
52. Lamarche B,Tchernof A,Moorjani J,et al.
Small dense low density lipoprotein particles as a predictor of the risk of ischemic heart disease in
men.Prospective results from the guebec cardiovascular study [ J ] .Circulation,1997,85:69-75
刊登於 1997 年 1 月《循環》期刊的一篇論文,
加拿大魁北克的研究人員對小而密的 LDL 顆粒在男性
中
作為缺血性心臟疾病風險的預測進行前瞻性的研究。
61. de Graaf J.Hak-Lemmers HL,Hectors MP,et al.
Enhanced susceptibility to in vivo oxidation of the dense low density lipoprotein subfraction in healthy subjects
[ J ] .Arterioscler Thromb 1991,11:298-306
刊登於 1991 年 3 月《動脈硬化,血栓形成,和血管
生物學》期刊的一篇論文,荷蘭奈美根大學附設醫院
的研究
人員對氧化後的 LDL 亞組對疾病的易感性進行研究。
65. Diane L,Thibble J JM,van Den Berg,et al.
Oxidative susceptibility of low density lipoprotein subfractions is related to their ubiquinol-10 and alpha-tocoprerol
content
[ J ] .Proc Noltl Acad Sci,1994,91:1183-1189
刊登於 1994 年 2 月《美國國家科學院院刊》的一篇
論文,加州大學柏克萊分校的研究人員
對低密度脂蛋白亞組的氧化敏感性進行研究。
73. 刊登於 1997 年 1 月《動脈硬化,血栓形成,和血管
生物學》期刊的一篇論文,荷蘭奈美根大學附設醫院
的研究
人員對輔酶 Q10 在總體 LDL 中的氧化還原狀態作為
家族性混合型高脂血症患者體內氧化修飾研究的指標
進行研究。
de Rijke YB,Breolie SJH,Demacker PNM,et al.
The Redox Status of coenzyme Q10 in total LDL as an Indictor in Vivo oxidative modification studies on subjects
with familial combined hyperlipidemia
[ J ] .Arterioscler thromb Vasc Biol,1997,17:127-133
Small, dense LDL - an important risk factor for coronary artery disease
Three-Hypers Series:Hyperlipidemia – 07 Small, dense LDL - an important risk factor for coronary artery disease
認識三高疾病系列:高血脂 – 07小而密LDL是冠狀動脈疾病重要的危險因素
Donner Laboratory, Lawrence Berkeley Laboratory, University of California, Berkeley
Pattern A is defined as an LDL subclass pattern with the major gradient gel peak at a particle diameter of 25.5 nm or greater and the presence of a secondary peak of smaller LDL particles. Pattern B has the major peak at a particle diameter of less than 25.5 nm, with skewing of the curve toward larger particle diameters.
Overall, the mean peak particle diameters for subjects with pattern A were 26.4 nm for cases and 26.5 nm for controls. The mean peak particle diameters for subjects with pattern B were
25.0 nm for cases and 25.1 nm for controls.
The LDL subclass pattern characterized by a preponderance of small, dense LDL particles was significantly associated with a threefold increased risk of myocardial infarction, independent of age, sex, and relative weight.
特點是小而密LDL顆粒的優勢與LDL亞類模式與心肌梗死的三倍風險增加,無關於年齡、性別、和相對重量顯著相關聯。
Plasma levels of high-density lipoprotein cholesterol were decreased, and levels of triglyceride, very low-density lipoproteins, and intermediate-density lipoproteins were increased in subjects with this LDL subclass pattern.
高密度脂蛋白膽固醇的血漿水平下降和甘油三酯,極低密度脂蛋白和中間密度脂蛋白的水平在與此LDL亞類模式受試者增加。
Multivariate logistic regression analyses showed that both high-density lipoprotein cholesterol and triglyceride levels contributed to the risk associated with the small, dense LDL subclass pattern.
多因素Logistic回歸分析表明,無論是高密度脂蛋白膽固醇和甘油三酯水平作出了貢獻與小而密LDL亞類模式相關的風險。
等位基因(英語:allele),又稱對偶基因,是染色體內的基因座的可以複製的DNA序列,其在細胞有絲分裂時的染色體上的兩個基因座是對應排列的,故在早期細胞遺傳學裡稱其為等位。
In a study of lipoprotein subclasses in 79 healthy members of sixteen nuclear families evidence was obtained that low-density-lipoprotein (LDL) subclass patterns determined by gradient-gel electrophoresis are influenced by a common allele at a single genetic locus.
在脂蛋白亞類在十六核心家庭證據79健康成員研究得到通過梯度凝膠電泳測定低密度脂蛋白(LDL)亞類模式是由一個共同的等位基因在一個單一遺傳基因座的影響。
The estimated frequency of the allele leading to the phenotype characterised by predominance of small, dense LDL subclasses was about 15%.
等位基因導致的表型特徵為小而密LDL亞類優勢的估計頻率為約15%。
Expression of this phenotype appears to be age dependent, in that most affected subjects in this population were older than 40 years.
出現這種表型表達的是年齡相關的,在這一人群中,大部分受影響的對象是年齡超過40歲。
Although plasma lipid levels were normal in most subjects with this trait, levels of plasma apoprotein B and triglyceride were higher and levels of apoprotein AI and HDL2 lower than in unaffected family members.
雖然血脂水平在多數受試者這個特質正常,血漿載脂蛋白B和甘油三酯水平較高及載脂蛋白AI和HDL2的水平比未受影響的家庭成員更低。
It is possible that this genetic trait may interact with other genetic or environmental variables in predisposing affected individuals to atherogenic lipoprotein and apoprotein profiles.
這可能是這種遺傳性狀可以誘發受影響個體動脈粥樣硬化的脂蛋白和載脂蛋白型材與其他基因或環境變量相互作用。
條件式羅輯斯回歸(conditional logistic regression).
A decrease of 0.65 nm (1 SD) in LDL-PPD was associated with a 35% increase in the risk of IHD (OR, 1.35; 95% CI, 0.97 to 1.89;P=.08) after adjustment for the confounding effects of diabetes, medication use, family history of IHD, and systolic blood pressure.
Buoyant LDL exhibited a higher content of triglycerides and unesterified cholesterol and a lower content of protein when these constituents were expressed as percent of total LDL mass.
當這些成分以總的LDL質量的百分比來表示時,大型浮力的LDL有更高的甘油三酯和未酯化的膽固醇含量和較低的蛋白質含量。
Contents of the radical-scavenging antioxidants ubiquinol-10 and a-tocopherol (mol of antioxidant/mol of LDL) were 2- to 3-fold greater in buoyant than dense LDL (0.124
0.070 vs. 0.068 ± 0.060 for ubiquinol-10 and 6.85 0.95 vs. 2.45 0.74 for a-tocopherol), although differences did not attain significance for ubiquinol-10 (P = 0.130) due to its large
interindividual variation.
Contents of the radical-scavenging antioxidants ubiquinol-10 and a-tocopherol (mol of antioxidant/mol of LDL) were 2- to 3-fold greater in buoyant than dense LDL (0.124
0.070 vs. 0.068 ± 0.060 for ubiquinol-10 and 6.85 0.95 vs. 2.45 0.74 for a-tocopherol), although differences did not attain significance for ubiquinol-10 (P = 0.130) due to its large
interindividual variation.