在C-反应蛋白和与年龄相关的黄斑变性之间存在关联
Johanna M Seddon1, Gary Gensler, Roy C Milton
1Epidemiology Unit, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, Mass 02114, USA. Johanna_Seddon@meei.harvard.edu
JAMA
|February 12, 2004
概括
较高的C-反应蛋白 (CRP) 水平与患上与年龄相关的黄斑变性 (AMD) 的风险增加有关. 这一发现表明炎症在AMD发育中起作用.
科学领域:
- 眼科医生 眼科 眼科
- 炎症研究 炎症研究
- 心血管疾病风险因素 心血管疾病风险因素
背景情况:
- C-反应蛋白 (CRP) 是系统性炎症的关键标志物.
- 某些心血管疾病 (CVD) 的风险因素与与年龄相关的黄斑变性 (AMD) 的风险因素重叠.
- 以前,CRP和AMD风险之间的关系尚未确定.
研究的目的:
- 调查C-反应蛋白 (CRP) 水平升高与与年龄相关的黄斑退行症 (AMD) 发展风险之间的关联.
主要方法:
- 一项涉及930名参与者,来自与年龄相关的眼病研究 (AREDS) 的病例控制研究.
- 参与者被分为没有AMD,轻度,中度和高级AMD的组,这些组根据 fundus照片分级.
- 分析了禁食血液样本以检测高灵敏度的CRP水平.
主要成果:
- 与没有AMD的人相比,晚期AMD患者的CRP水平显著更高 (中位数3.4vs2.7mg/L).
- 在调整混因素后,高CRP水平独立与中期和高级AMD阶段相关.
- 晚期AMD的几率比率随着CRP水平的提高而增加,特别是在最高四分位数和第90百分位数中.
结论:
- 升高的CRP水平代表了与年龄相关的黄斑变性 (AMD) 的独立风险因素.
- 这些发现表明,炎症是AMD的潜在病原体.
- CRP可以作为AMD风险评估的潜在生物标志物.
更多相关视频
相关概念视频
Cross-reactivity
Overview
Background and Environment Affect Phenotype
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
Complementation Tests
A complementation test is a simple cross to identify whether the two mutations are located on the same gene or different genes. It was first performed by Edward Lewis in the 1940s while working on fruit flies. He developed the test to identify the location and arrangement of different mutations on chromosomes.
Organisms heterozygous for different mutations are crossed pairwise in all combinations. If present on different genes, the mutations can complement each other by providing the missing...
Organisms heterozygous for different mutations are crossed pairwise in all combinations. If present on different genes, the mutations can complement each other by providing the missing...
The Effect of Aging on Tissues
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...
Changes in Skin Color: Clinical Perspectives
The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Aging
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...


