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関連する概念動画

Aging01:26

Aging

179
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
179
Biological Clocks and Seasonal Responses02:45

Biological Clocks and Seasonal Responses

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The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
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Circadian Rhythms and Gene Regulation02:19

Circadian Rhythms and Gene Regulation

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The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
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Mitochondria01:37

Mitochondria

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Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
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The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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メタボロミックベースの老化時計

A Ibáñez de Opakua1, R Conde2, A de Diego2

  • 1ATLAS Molecular Pharma, Parque Tecnológico de Bizkaia, Ed. 800, 48160, Derio, Spain.

npj metabolic health and disease
|September 3, 2025
PubMed
まとめ
この要約は機械生成です。

NMRベースの代謝時計のように 分子老化時計は 年代測定よりも 健康状態を予測します 新しいアプローチにより 加速された老化の検出の正確性と解釈性が向上します

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Measurement of Protein Turnover Rates in Senescent and Non-Dividing Cultured Cells with Metabolic Labeling and Mass Spectrometry
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科学分野:

  • バイオマーカーとヘルスパン研究
  • 代謝学 と 老化 の 科学

背景:

  • 分子老化時計は 生物学的年齢を推定し 健康的な結果を予測する上で 年代的な年齢を上回ります
  • エピジェネティック,トランスクリプトミック,プロテオミック,メタボロミッククロックは重要なタイプです.
  • NMRベースのメタボロミッククロックは,非侵襲的な,高通量代謝健康評価を提供します.

研究 の 目的:

  • 既存のNMRベースの代謝老化時計モデルを要約する.
  • 老化時計の開発のための新しいNMRベースのアプローチを導入する.
  • 生物学的年齢の推定の予測的正確性と臨床的解釈性を向上させる.

主な方法:

  • 現在のNMRベースの代謝時計の文献のレビューと合成.
  • メタボロミックデータを統合した新しい計算モデルの開発.
  • 急速な老化と病気のリスクを予測するためのモデルの検証

主要な成果:

  • 生物学的老化に関連するNMRベースのメタボロミックシグネチャーを特定した.
  • この新しいアプローチは 生物学的年齢を予測する上で 高い精度を示しています
  • このモデルは,疾患特有の代謝の歪みを成功裏に特定します.

結論:

  • NMRベースの代謝時計は,代謝の健康と生物学的年齢を評価するための貴重なツールです.
  • 提出されたアプローチは,老化の時計の臨床的有用性を高めます.
  • この方法は,リスクの階層化と加速老化の早期発見をサポートします.