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関連する概念動画

Overview of Lipid Metabolism01:24

Overview of Lipid Metabolism

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Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
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Blood Studies for Cardiovascular System III: Serum Lipid Profile01:25

Blood Studies for Cardiovascular System III: Serum Lipid Profile

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Understanding serum lipids is crucial for maintaining cardiovascular health and preventing heart disease and stroke.
Serum lipids are fats and fatty substances in the blood and are crucial for various bodily functions, including energy storage, cellular structure, and hormone production. Serum lipids consist of cholesterol, triglycerides, and phospholipids.
Cholesterol is a soft, fat-like substance found in all body cells. It is crucial for producing hormones, vitamin D, and substances that aid...
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Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

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Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
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Lipid Catabolism01:25

Lipid Catabolism

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Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
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Atherosclerosis III: Management01:26

Atherosclerosis III: Management

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Management of atherosclerosis involves an integrated strategy encompassing pharmacological treatment, surgical interventions, lifestyle changes, and nutrition therapy to address the multifactorial nature of the disease.Pharmacological TherapyA cornerstone of atherosclerosis management is the use of pharmacological agents. Statins, such as atorvastatin, are pivotal in inhibiting HMG-CoA reductase, an enzyme that catalyzes an initial step in cholesterol synthesis in the liver. This reduction in...
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Lipid-derived Compounds in the Human Body01:31

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Fats and lipids are crucial components in the human body. Some lipid-derived compounds, such as fat-soluble vitamins, eicosanoids, lipoproteins, and glycolipids, also play unique roles to support various  biological processes .
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Updated: Jan 18, 2026

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比率駆動型リポタンパク質マッピングによる心血管代謝リスクの遺伝的経路の解明

S Hani Najafi-Shoushtari, Karsten Suhre, Murugan Subramanian

    Research square
    |January 16, 2026
    PubMed
    まとめ

    本研究では、UKバイオバンクのデータを用いて、脂質代謝異常のリスク遺伝子座をファインマッピングした。新規の比率ベースのマーカーが同定され、リポタンパク質代謝および心血管疾患の潜在的な薬剤ターゲットに関する新たな洞察が明らかになった。

    キーワード:
    リポタンパク質心血管代謝リスク遺伝的マッピング脂質異常症薬剤ターゲット

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    Differential Effects of Lipid-lowering Drugs in Modulating Morphology of Cholesterol Particles
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    科学分野:

    • 遺伝学
    • メタボロミクス
    • 心血管疾患研究

    背景:

    • 脂質代謝異常は心血管イベントの重要な予測因子である。
    • ゲノムワイド関連解析(GWAS)により、脂質代謝に関連する多数のゲノム領域が同定されている。
    • 遺伝的関連を臨床的応用につなげるには、リポタンパク質の代謝、輸送、リモデリング(LPmtr)における遺伝子機能を理解する必要がある。

    研究 の 目的:

    • リポタンパク質関連形質とその比率を用いた脂質リスク遺伝子座の深い分子ファインマッピングを実行すること。
    • LPmtr経路の新規比率ベースマーカーを同定すること。
    • 薬剤ターゲット開発のための新たな仮説を生成し、脂質異常症のメカニズムを解明すること。

    主な方法:

    • 273,000人のUKバイオバンク参加者を対象に、168のリポタンパク質関連形質とその比率を用いて、554の脂質リスク遺伝子座の深い分子ファインマッピングを実施した。
    • リノール酸分画、LDL中のエステル化コレステロール、総リポタンパク質粒子数に対するHDL分画を含む比率ベースマーカーの解析。
    • 遺伝子機能と経路を調査するための比率駆動型クラスタリング、統合細胞アッセイ、およびマウス研究。

    主要な成果:

    • LPmtr経路の新規比率ベースマーカーを同定し、遺伝子座と特定の生物学的機能とを関連付けた。
    • 特徴が不明瞭な脂質リスク遺伝子座における潜在的な原因遺伝子を発見した。
    • リポタンパク質のファインマッピングが、薬剤ターゲット仮説の生成および脂質異常症のメカニズム解明に有用であることを示した。
    • mTORC1を介したVLDL代謝と関連付けられた、TG分泌およびERストレス応答におけるmiR-148の関与を特定した。
    • miR-148aをLp(a)レベルの決定因子として同定した。

    結論:

    • 代謝物データとGWASを用いたリポタンパク質のファインマッピングは、リポタンパク質粒子の生物学に関する新たな洞察を提供する。
    • リポタンパク質のサイズと組成を評価することは、脂質関連障害の理解、予防、治療に不可欠である。
    • 本研究は、心血管疾患および脂質異常症における薬剤ターゲット開発のための新たな仮説を生成する。