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Obesity01:24

Obesity

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The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in...
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Regulation of Metabolism01:19

Regulation of Metabolism

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Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
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Regulation of Food Intake01:30

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Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
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Overview of Metabolism01:40

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Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
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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.
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関連する実験動画

Updated: Sep 10, 2025

A Chronic High-Intensity Interval Training and Diet-Induced Obesity Model to Maximize Exercise Effort and Induce Physiologic Changes in Rats
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RAGE ノックアウトはダイエットによる肥満と代謝障害を軽減する

Isabelle L Palmer1, Genevieve Parker1, Alden T Chiu1

  • 1Department of Cell Biology and Physiology, Brigham Young University, Provo, UT 84602, USA.

Metabolites
|August 27, 2025
PubMed
まとめ
この要約は機械生成です。

高度な糖化最終産物 (RAGE) の受容体を持たないマウスは,食事による肥満に抵抗した. RAGE ノックアウトマウスは 西洋の食生活で 体重が増減し エネルギー消費が増加し 炎症が減りました

キーワード:
脂肪高度グリケーションの最終製品ミトコンドリア肥満

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科学分野:

  • 代謝に関する研究
  • 肥満に関する研究
  • 炎症に関する研究

背景:

  • 高度な糖分化最終産物 (RAGE) の受容体は肥満と代謝機能障害に関連しています.
  • RAGEが食事によって引き起こされる肥満における特定の役割については,さらなる解明が必要である.

研究 の 目的:

  • RAGE ノックアウト (RAGE KO) の代謝効果を,西洋食 (WD) のマウスで調査する.

主な方法:

  • RAGE KOマウスとワイルドタイプ (WT) の littermatesがWDに餌を与えられた.
  • 間接的なカロリメトリーとミトコンドリア呼吸検査を行った.
  • 体重,脂肪細胞サイズ,全身性炎症マーカー (TNF-αなど) を測定した.

主要な成果:

  • RAGE KOのマウスは,WDのWTマウスと比較して,体重増加と脂肪細胞のサイズが減少した.
  • RAGE KOマウスは酸素消費と運動能力が増加し,エネルギー消費が増加したことを示した.
  • RAGE KOマウスでは全身の炎症マーカーのレベルが低く,炎症反応の減少を示唆した.

結論:

  • RAGEはメタボリック・ホメオスタシスに重要な役割を果たします.
  • RAGEの消去は,WDによって誘発される肥満と代謝障害に対する耐性を授与します.
  • RAGEを標的とした治療は,肥満および関連する代謝障害に対する潜在的な治療戦略です.