Interactive effects of APOE haplotype, sex, and exercise on postheparin plasma lipase activities.

Interactive effects of APOE haplotype, sex, and exercise on postheparin plasma lipase activities.
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APOE 单倍型、性别和运动对肝素后血浆脂肪酶活性的交互影响。

DOI:
10.1152/japplphysiol.00287.2010
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发表时间:
2011
期刊:
Journal of applied physiology (Bethesda, Md. : 1985)
影响因子:
--
通讯作者:
Thompson,PaulD
Thompson,PaulD
中科院分区:
--
文献类型:
--
作者:
Seip,RichardL;Zoeller,RobertF;Angelopoulos,TheodoreJ;Salonia,James;Bilbie,Cherie;Moyna,NiallM;Miles,MaryP;Visich,PaulS;Pescatello,LindaS;Gordon,PaulM;Tsongalis,GregoryJ;Bausserman,Linda;Thompson,PaulD

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肝脂肪酶 (HL) 和脂蛋白脂肪酶 (LPL) 活性(HLA、LPLA)可修饰脂蛋白并促进其与肝受体的结合。载脂蛋白 E (APOE) 与脂肪酶发生物理相互作用,APOE 基因的三种常见单倍型(ε2、ε3 和 ε4)产生功能不同的蛋白质亚型(分别为 E2、E3 和 E4)。脂肪酶活性本身因性别和运动训练状态而异。 APOE 基因型、运动训练和性别对脂肪酶活性的相互作用尚未研究。我们测量了具有三种最常见 APOE 基因型的正常血脂男性和女性的肝素后血浆脂肪酶活性,这些基因型是单倍型组合 ε2/ε3 (n= 53)、ε3/ε3 (n= 62) 和 ε4/ε3 (n= 52),并参加了 6 个月的有氧运动训练。这些单倍型组合估计分别占人口的 11.6%、62.3% 和 21.3%。女性 HLA 基线比男性低 35% (P< 0.0001)。在男性中,ε2/ε3 组的 HLA 高于 ε4/ε3 (P= 0.01) 和 ε3/ε3 (P= 0.05),而女性则不然。性别和 APOE 基因型均不影响基线 LPLA。训练使 HLA 降低 5.2% (P= 0.018),但没有 APOE 影响。仅当校正基线胰岛素时,运动后 LPLA 的明显增加才显着且依赖于 APOE(P < 0.05)。运动使ε3/ε3中的LPLA降低了0.8μmol游离脂肪酸(FFA)·ml−1·h−1(−6%),而ε2/ε3中LPLA增加了6.6%,ε4/ε3中增加了12%(P= 0.018 vs. ε3/ε3)。然而,只有在校正基线胰岛素后,这些差异才具有统计学意义。我们得出的结论是,常见的 APOE 基因型与 1) 性别相互作用来调节 HLA,无论训练状态如何,ε2/ε3 男性表现出比 ε3/ε3 或 ε4/ε3 男性更高的 HLA,2) 有氧训练调节 LPLA,无论性别如何,在控制基线胰岛素后,与 ε2/ε3 和 ε3/ε4 的增加相比,ε3/ε3 受试者显示出显着下降。
Hepatic lipase (HL) and lipoprotein lipase (LPL) activities (HLA, LPLA) modify lipoproteins and facilitate their binding to hepatic receptors. Apolipoprotein E (APOE) physically interacts with the lipases, and the three common haplotypes of theAPOEgene (ε2, ε3, and ε4) yield protein isoforms (E2, E3, and E4, respectively) that are functionally different. Lipase activities themselves differ by sex and exercise training status. The interaction ofAPOEgenotype, exercise training, and sex effects on lipase activities has not been studied. We measured postheparin plasma lipase activities in normolipidemic men and women with the three most commonAPOEgenotypes, which are the haplotype combinations ε2/ε3 (n= 53 ), ε3/ε3 (n= 62), and ε4/ε3 (n= 52), enrolled in 6 mo of aerobic exercise training. These haplotype combinations comprise an estimated 11.6, 62.3, and 21.3% of the population, respectively. Baseline HLA was 35% lower in women than in men (P< 0.0001). In men but not women, HLA was higher in ε2/ε3 group compared with ε4/ε3 (P= 0.01) and ε3/ε3 (P= 0.05). Neither sex nor APOE genotype affected baseline LPLA. Training decreased HLA by 5.2% (P= 0.018) with noAPOEeffect. The apparent increase in LPLA following exercise was significant andAPOEdependent only when corrected for baseline insulin (P< 0.05). Exercise decreased LPLA by 0.8 μmol free fatty acid (FFA)·ml−1·h−1(−6%) in ε3/ε3 compared with the combined increases of 6.6% in ε2/ε3 and 12% in ε4/ε3 (P= 0.018 vs. ε3/ε3). However, these differences were statistically significant only after correcting for baseline insulin. We conclude that commonAPOEgenotypes interact with1) sex to modulate HLA regardless of training status, with ε2/ε3 men demonstrating higher HLA than ε3/ε3 or ε4/ε3 men, and2) aerobic training to modulate LPLA, regardless of sex, with ε3/ε3 subjects showing a significant decrease compared with an increase in ε2/ε3 and ε3/ε4 after controlling for baseline insulin.
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