补充系统激活是疟疾期间的血生物标志物签名 怀孕期间的疟疾
Veronica Feijoli Santiago1, Jamille Gregorio Dombrowski1, Rebeca Kawahara1,2
1Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil.
Genes
|August 26, 2023
概括
孕期疟疾会激活补体系统,影响母亲的健康和胎儿的发育. 这项研究揭示了补充激活与新生儿不良结果相关,比如减少头周长.
科学领域:
- 免疫学 免疫学 免疫学
- 蛋白质组学是指蛋白质组学.
- 孕产妇健康 孕产妇健康
背景情况:
- 孕期疟疾 (MiP) 构成重大风险,特别是在初怀孕和第二次怀孕的妇女身上,导致严重的贫血和低出生体重的婴儿.
- 受病原体感染的红细胞会触发胎盘炎症和免疫反应,但与MiP相关的不良结果的特定分子标志物仍然不太了解.
- 了解这些标志物对于缓解低出生体重和子宫内生长限制等并发症至关重要.
研究的目的:
- 在小鼠模型和人类实验对象中识别与怀孕期间疟疾相关的血蛋白质组特征.
- 调查特定蛋白质变化的作用,特别是在补充系统,在孕期疟疾期间.
- 要将观察到的蛋白质组变化与新生儿的临床结果相关联.
主要方法:
- 基于定量质谱的蛋白质组学被用来分析来自感染Plasmodium berghei ANKA的小鼠模型和感染Plasmodium falciparum的孕妇的血样本.
- 用C3a和C4a过敏毒素试验来评估补充系统的激活.
- 进行了相关性分析,以将补充系统激活标记与新生儿人体测量结果联系起来.
主要成果:
- 蛋白质组分析分别在小鼠和人体血中发现了279个和249个量化蛋白质,其中28%和30%显示调节.
- 在这两种模型中,很大一部分受调节的蛋白质都参与了补充系统的激活.
- 升高的C3a和C4a水平证实了感染血中的补充激活,这与感染Plasmodium falciparum的母亲新生儿头周的缩小相关.
结论:
- 该研究确定了怀孕期间疟疾的血蛋白质组特征,突出显示了补体系统的参与.
- 补充系统的激活是怀孕期间疟疾的关键特征,与不良胎儿结果有关.
- 这些发现强调了补充系统在免疫反应和怀孕期间疟疾的临床结果中的重要性.
相关概念视频
Complement System
2.4K
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...
2.4K
Symbiosis
28.7K
Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...
28.7K


