氧化应激和抗氧化剂在与年龄相关的黄斑变性
Neetu Kushwah1, Kiran Bora1, Meenakshi Maurya1
1Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA.
Antioxidants (Basel, Switzerland)
|July 29, 2023
概括
氧化压力有助于与年龄相关的眼睛疾病,如AMD. 抗氧化剂和食营养素可以通过对抗自由基来帮助预防或减缓AMD的进展.
科学领域:
- 眼科医生 眼科 眼科
- 老年学是一门学科.
- 营养科学 营养科学
背景情况:
- 氧化应激是与年龄相关的眼睛疾病的关键因素,如与年龄相关的黄斑变性 (AMD),白内障和绿内障.
- 随着年龄的增长,抗氧化能力的降低会导致反应性氧物种的增加和眼细胞的氧化损伤,从而导致与年龄相关的病理.
- 视力衰退是老年人视力丧失的主要原因,涉及视网膜色素上皮质 (RPE) 功能障碍和退化,以及胆道新血管化,导致光受体细胞损伤.
研究的目的:
- 审查氧化应激在与年龄相关的黄斑变性 (AMD) 中的病原性作用.
- 总结抗氧化剂和食微量营养素在管理AMD中的有益作用.
- 突出临床和实验证据支持氧化应激和AMD之间的联系.
主要方法:
- 关于氧化应激和AMD的临床和实验研究的文献综述.
- 分析抗氧化剂在清除自由基中的作用.
- 关于饮食中微量营养素及其对AMD进展的影响的研究摘要.
主要成果:
- 氧化压力对AMD的发病有显著的贡献.
- 摄入抗氧化剂是预防或减缓AMD进展的有效策略.
- 饮食中的抗氧化剂和微量营养素显示出对AMD的保护作用.
结论:
- 氧化应激是AMD发展和进展的关键因素.
- 饮食中的抗氧化剂和微量营养素在缓解AMD方面发挥着至关重要的作用.
- 对抗氧化疗法和AMD营养干预措施的进一步研究是有必要的.
更多相关视频
14:25Quantification of Reactive Oxygen Species Using 2′,7′-Dichlorofluorescein Diacetate Probe and Flow-Cytometry in Müller Glial Cells
Published on: May 13, 2022
6.8K
12:59Assessment of Oxidative Damage in the Primary Mouse Ocular Surface Cells/Stem Cells in Response to Ultraviolet-C UV-C Damage
Published on: February 15, 2020
6.2K
相关概念视频
Aging
88
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...
88
Electron Transport Chain: Complex I and II
14.5K
The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
ROS generation is regulated and maintained at moderate levels necessary...
14.5K
Radical Autoxidation
2.2K
The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
2.2K
Mitochondria
13.8K
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,...
13.8K
