免疫沉积物,补充激活和APOL1风险变异在焦点细分细胞凝结症中的风险变异
American journal of nephrology
|February 19, 2026
概括
APOL1高风险FSGS与免疫沉积和补体激活有关. 这表明免疫介导的途径有助于高风险个体的FSGS发展.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
背景情况:
- 免疫沉积和补充激活在APOL1介导的焦点细分结晶体硬化 (FSGS) 中的作用尚未完全理解.
- 调查这些因素对于了解FSGS病原体至关重要.
研究的目的:
- 为了检查APOL1风险变体 (RRVs),质免疫沉积物和FSGS患者的尿补充激活之间的关联.
- 为了澄清APOL1相关的FSGS中的免疫介导机制.
主要方法:
- 在175名FSGS患者中分析了质IgG,IgM和C3沉积,脏活检结果和尿膜攻击复合物 (sC5b9) 水平.
- 根据基因检测,将参与者分为高风险 (两个RRV) 和低风险 (零到一个RRV) 组.
主要成果:
- 与低风险人群相比,高风险参与者表现出更高的FSGS崩和介质IgG沉积的患病率.
- 在高风险参与者中观察到尿液中sC5b9水平更高的趋势.
- 淋巴体IgG染色与尿中sC5b9水平显著相关,表明IgG沉积和补体激活之间存在联系.
结论:
- APOL1高风险FSGS与特定的免疫沉积模式 (半性IgG) 和升高的尿补体激活标记物有关.
- 这些发现表明,在患有APOL1风险变异的个体中,FSGS的发病过程中存在免疫媒介机制.
更多相关视频
06:39Glomerular Outgrowth as an Ex Vivo Assay to Analyze Pathways Involved in Parietal Epithelial Cell Activation
Published on: August 19, 2020
5.0K
09:43Analyses of Proteinuria, Renal Infiltration of Leukocytes, and Renal Deposition of Proteins in Lupus-prone MRL/lpr Mice
Published on: June 8, 2022
2.6K
相关概念视频
Amyloid Fibrils
10.2K
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
10.2K
Renal Corpuscle
8.3K
The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
8.3K
Complement System
10.5K
The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a...
10.5K
Nephrotic Syndrome I : Introduction
1.1K
Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of...
1.1K
Diabetic Nephropathy
28
Definition Diabetic nephropathy is a chronic kidney complication that results from prolonged hyperglycemia.Prevalence It is the most common cause of chronic kidney disease (CKD) and end-stage renal disease (ESRD) worldwide, affecting up to half of individuals with diabetes.Pathophysiology • Sustained hyperglycemia triggers multiple hemodynamic and metabolic changes in the kidney. • Early in the disease, increased renal blood flow and glomerular hyperfiltration...
28
Alzheimer Disease l: Introduction
20
Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...
20
