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相关概念视频

Aging01:26

Aging

48
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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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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Cognitive Development During Adulthood01:30

Cognitive Development During Adulthood

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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,...
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The Blood-brain Barrier00:49

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Overview
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Alzheimer's Disease: Overview01:26

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Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
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Dementia01:30

Dementia

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Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
The progression of dementia is generally gradual....
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相关实验视频

Updated: Jun 25, 2025

Using Retinal Imaging to Study Dementia
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周围血管功能障碍和老化的大脑老化

Devin Wahl1, Zachary S Clayton2

  • 1Department of Health and Exercise Science and Center for Healthy Aging, Colorado State University, Fort Collins, CO 80523, USA.

Aging
|May 28, 2024
PubMed
概括
此摘要是机器生成的。

老龄化加速心血管疾病 (CVD),损害大脑健康,增加痴呆风险. 准衰老机制以减少氧化应激和改善血管功能可能会降低老年人痴呆风险.

关键词:
脑血管健康 脑血管健康认知功能 认知功能痴呆症 痴呆症是一种痴呆症.周围血管健康 周围血管健康

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科学领域:

  • 老年学和神经科学 在
  • 心血管健康和痴呆症风险

背景情况:

  • 衰老是心血管疾病 (CVD) 的首要危险因素,是全球首要的死亡原因.
  • 心血管疾病显著影响大脑健康,导致痴呆症,通常是由氧化应激和血管功能障碍驱动的.
  • 炎症和线粒体功能障碍等衰老机制加剧了氧化应激,影响了外周和大脑血管系统.

研究的目的:

  • 探索外周血管功能障碍,大脑血管功能障碍和衰老期间大脑健康降低之间的机械联系.
  • 评估衰老特征如何导致血管功能障碍和痴呆症风险.
  • 评估针对衰老机制的潜在干预措施,以减少痴呆风险.

主要方法:

  • 关于衰老,心血管疾病,血管功能障碍和痴呆症的现有文献的综述.
  • 对氧化应激和衰老特征在血管和大脑健康中的作用的分析.
  • 探索影响衰老机制的生活方式策略和药理学剂.

主要成果:

  • 心血管疾病和衰老的共同途径包括氧化应激和炎症,导致外周和脑血管功能障碍.
  • 这些功能障碍是导致认知衰退和痴呆症的关键因素.
  • 生活方式干预和某些药物显示出缓解这些与衰老相关的血管和大脑健康问题的潜力.

结论:

  • 针对基本的衰老机制以减少氧化应激和增强血管健康是减少痴呆风险的有希望的策略.
  • 血管健康的非侵入性评估可能为老年人群中痴呆症风险评估提供新的途径.
  • 对生活方式和药理干预措施的进一步研究是有必要的,以促进健康的大脑衰老.