黑色素和与年龄相关的黄斑退化风险
Hejin Jeong1, Jacqueline K Shaia1,2, Jonathan C Markle2
1Case Western Reserve University School of Medicine, Cleveland, Ohio.
JAMA ophthalmology
|June 6, 2024
概括
补充黑素可以降低患年龄相关黄斑变性 (AMD) 的风险,并减缓其进展. 这项研究表明,黑激素可能是AMD的潜在预防疗法.
科学领域:
- 眼科医生 眼科 眼科
- 老年学是一门学科.
- 药理学 药理学是指药理学的学科.
背景情况:
- 与年龄相关的黄斑变性 (AMD) 是老年人视力丧失的主要原因.
- 黑色素已经显示出可以抵消AMD病变的特性.
- 黑激素对AMD发展和进展的保护作用需要研究.
研究的目的:
- 调查黑激素使用与与年龄相关的黄斑变性 (AMD) 发展或进展的风险之间的联系.
- 评估黑激素作为老年人群中AMD预防策略的潜力.
主要方法:
- 使用TrinetX (美国) 的非识别电子健康记录进行了回顾性队列研究.
- 50岁以上的患者被分为AMD原始和非原始的AMD组.
- 倾向性得分匹配 (PSM) 基于人口统计,并发症和其他催眠药的基础上,将黑色素使用者与非使用者进行了比较.
主要成果:
- 在没有患有AMD的个体中,使用黑色素与患有AMD的风险显著降低 (RR,0.42;95% CI,0.28-0.62).
- 在非排泄性AMD患者中,黑激素使用与进展到排泄性AMD的风险较低相关 (RR,0.44;95%CI,0.34-0.56).
- 这些保护性关联在各个年龄小组 (60+和70+) 中都是一致的.
结论:
- 补充黑色素与与年龄相关的黄斑变性发病和进展的风险降低有关.
- 这些发现支持进一步研究黑激素作为AMD预防疗法的有效性.
- 虽然生活方式因素可能起作用,但黑激素在AMD预防策略中表现有前途.
相关概念视频
Management of Insomnia
244
The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
244
Photoreceptors and Visual Pathways
6.0K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
6.0K
Insufficient Sleep and Sleep Deprivation
139
Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...
Sleep deprivation is a more severe form of sleep loss...
139
Sedatives and Hypnotics Drugs: Miscellaneous Agents
168
Sedatives and hypnotics encompass a wide range of substances, each with its unique mechanism of action, uses, and potential adverse effects.
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
168
Menopause
155
Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
155
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...
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...
48


