孕前与胎盘补充C4d沉积有关
E Pierik1, M H de Jong-Schoots2, M Bulthuis2
1Department of Obstetrics and Gynecology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.
Placenta
|September 18, 2025
概括
孕前与胎盘C4d沉积增加有关,特别是在早期发病的情况下. 这表明补充系统在产前的发展中起着作用,这需要进一步的亚型特定研究.
科学领域:
- 免疫学 免疫学 免疫学
- 产科 产科 产科 产科 产科
- 病理生理学 病理生理学
背景情况:
- 孕前症对母亲和婴儿的健康构成重大风险.
- 补充系统在产前病原体中的作用尚不清楚.
- 免疫因子改变与妊娠前有关,但补体系统的参与需要进一步研究.
研究的目的:
- 为了研究胎盘补充体沉积在孕前的差异.
- 为了比较早期发病的孕前,晚期发病的孕前,健康的孕期和自发的早产胎盘.
- 为了检查具体补充因子 (C1q,C4d,C3d,C5b-9,CD59) 在胎盘组织中的沉积.
主要方法:
- 免疫组织化学被用来分析胎盘组织.
- 检查了患有早产子 (n=26),晚产子 (n=26),健康期对照 (n=24) 和自发早产 (n=14) 的胎盘.
- 特定的补充蛋白 (C1q,C4d,C3d,C5b-9,CD59) 是沉积分析的目标.
主要成果:
- 在25.5%的妊娠前病例中,C4d沉积在热囊细胞中被发现,与健康对照有显著差异.
- 与健康期和自发的早产儿相比,早期发病的孕显示出明显更高的C4d沉积量.
- 研究组之间没有观察到C1q,C3d,C5b-9或CD59沉积的显著差异.
结论:
- 在早期出现的孕前期胎盘中增加的C4d沉积表明补充系统的作用.
- 这些发现凸显了孕前的复杂性和对亚型特定研究的需要.
- 进一步调查补充系统在产前病理生理学的参与是有必要的.
相关概念视频
Complement System
9.8K
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...
9.8K
Teratogenicity
4.0K
The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
4.0K
Pathophysiology of Diabetes
3.2K
Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
3.2K
Hypertension III: Clinical Manifestations and Diagnostic Studies
471
Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...
471
Transcytosis of IgG
4.1K
Transcytosis is the process in which molecules are internalized by endocytosis, transported across the cell, and released through exocytosis from the opposite end of the cell. Molecules such as insulin, immunoglobulins, and certain nutrients are transferred through the recycling endosomes by recycling and transcytosis.
IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
4.1K
Formation of the Platelet Plug
8.8K
The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
8.8K


