相关实验视频
Updated: Jul 16, 2025

04:43
Visualizing Visual Adaptation
Published on: April 24, 2017
9.0K
衰老,适应和不适应
1Interdisciplinary Center for Neurosciences, Heidelberg University, Heidelberg, Germany.
Frontiers in aging
|September 13, 2023
概括
衰老涉及有益适应的下降和有害的增加,降低有益与有害的适应比率 (Ab/Ah). 像运动这样的干预措施可以通过改善这种比率来抵消衰老.
科学领域:
- 老年学和细胞生物学
- 生理学和适应机制.
背景情况:
- 衰老的特点是调节不良的适应过程,有益的适应减弱 (例如学习,免疫可塑性) 和不适应的过程增加 (例如癌症,代谢功能障碍).
- 这种平衡随着年龄的增长而转向有害的适应,降低了有益的适应与有害的适应比率 (Ab/Ah).
研究的目的:
- 探索衰老的适应-不适应框架.
- 建议通过调节Ab/Ah比率,干预措施可以抵消衰老.
- 检查参与衰老过程中适应失调的分子参与者.
主要方法:
- 概念框架分析老龄化作为一种适应 - 适应不良的困境.
- 对干预措施 (运动,饮食限制,环境丰富) 和它们对Ab/Ah的影响的审查.
- 检查与衰老适应相关的分子因素 (例如,CREB,即时早期基因).
主要成果:
- 衰老的结果是无法解决适应 - 适应不良的困境,与年龄相关的病理源于激活或损坏的适应机制.
- 像运动这样的干预措施通过增强有益的适应性 (转塑性) 和减少有害的适应性来增加Ab/Ah.
- 了解适应级联是阐明适应在衰老中的双重作用的关键.
结论:
- 衰老是一个复杂的过程,涉及从有益的适应转向有害的适应.
- 生活方式干预可以积极影响适应-不适应平衡,提供一种抵消衰老的策略.
- 对分子适应机制的进一步研究对于开发抗衰老策略至关重要.
相关概念视频
Aging
86
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...
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...
86
Natural Selection and Adaptation
245
Natural selection, a fundamental concept in evolutionary biology, is the mechanism by which evolution is driven, favoring organisms that are best adapted to their environments. This process enhances their chances of survival and reproduction. Adaptation, a key outcome of this process, involves genetic modifications that optimize an organism's functionality under specific environmental challenges, such as extreme cold or thinner air at high altitudes.
Beyond physical adaptations,...
Beyond physical adaptations,...
245
Cognitive Development During Adulthood
155
Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
155
The Effect of Aging on Tissues
2.1K
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...
2.1K
Erikson's Theory on Socioemotional Development during Adulthood
134
Erik Erikson's theory of psychosocial development outlines a series of stages through which individuals progress across the lifespan. Each stage involves a psychosocial conflict that significantly influences personal growth and well-being. Three key stages — intimacy versus isolation, generativity versus stagnation, and integrity versus despair — highlight the developmental challenges faced in adulthood.
Intimacy Versus Isolation in Early Adulthood
Individuals in early...
Intimacy Versus Isolation in Early Adulthood
Individuals in early...
134
Three Developmental Domains
176
Human development is typically examined across three main domains: physical, cognitive, and socio-emotional. These domains represent the significant areas of change and continuity throughout the lifespan, from infancy to late adulthood.
Physical Development
Physical processes, also known as maturation, encompass the biological changes that occur across an individual's life. These changes begin with genetic inheritance and continue through various stages, including growth in height and...
Physical Development
Physical processes, also known as maturation, encompass the biological changes that occur across an individual's life. These changes begin with genetic inheritance and continue through various stages, including growth in height and...
176

