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相关概念视频

Aging01:26

Aging

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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...
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Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential;...
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The Effect of Aging on Tissues01:19

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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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Longitudinal Research02:20

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Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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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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基于性的长寿医学:一个多规模和动态的整合性框架.

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Ageing research reviews
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概括

人口老龄化增加了寿命和健康寿命之间的差距. 本次审查将弹性重新定义为一种动态的,多层次的结构,以保持老年人的适应能力和功能独立性.

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科学领域:

  • 老年学和长寿科学 老年学和长寿科学
  • 生物医学工程 生物医学工程
  • 公共卫生政策 公共卫生政策

背景情况:

  • 人口老龄化正在扩大寿命和健康期之间的差距,导致老年人脆弱性和功能依赖性增加.
  • 个体的衰老轨迹是异质的,这表明脆弱性受适应能力的影响,而不是仅仅是时间上的年龄.
  • 当前的方法往往侧重于以疾病为中心的护理,忽视了保持适应能力.

研究的目的:

  • 将弹性重新定义为一个动态的,多层次的结构.
  • 综合运营弹性读数的证据.
  • 为临床应用提出一个综合的长寿医学框架.

主要方法:

  • 审查现有的关于人口老龄化,健康和恢复能力的文献.
  • 有关分子维护,免疫内分泌自主调节和功能轨迹的综合证据 (世卫组织内在能力框架).
  • 基于恢复动态,生理灵活性和综合生物标志物 (多体质,自主/内分泌节律,数字测量,功能表现) 配置文件的操作弹性读数的识别.

主要成果:

  • 弹性是一种涉及分子,生理 (生命系统三位一体) 和功能领域的多层次结构.
  • 可测量的弹性特征可以从恢复动态,生理灵活性和综合生物标志物中得出.
  • 生活方式,心理社会和药物战略影响共享的弹性途径.

结论:

  • 弹性是一种可修改的目标,可以将衰老策略从以疾病为中心的护理转向保护适应能力.
  • 综合寿命医学框架可以将弹性评估嵌入到临床决策,预测建模和政策中.
  • 专注于性促进功能独立和有意义的参与整个生命过程.