在怀孕期间肠道微生物群,微生物网络和免疫之间的关联,重点关注特定的细菌群
Hao Yan1, Xinyuan Liang1,2, Huijuan Luo1
1Department of Obstetrics and Gynecology, The First Affiliated Hospital of Jinan University, Guangzhou, China.
Frontiers in microbiology
|December 29, 2023
概括
处于生育年龄的女性有三个不同的肠道微生物群社区模式. 这些肠道集群可以在怀孕后期转移,并以不同的方式影响免疫状态,突出需要考虑研究中的这些变化.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
背景情况:
- 肠道微生物群社区的组成比个体细菌的功能更难理解.
- 在生育年龄的妇女中,肠道菌群的特征需要进一步研究.
研究的目的:
- 调查生育年龄妇女的肠道微生物群社区组成.
- 分析肠道微生物群和免疫状态之间的关系.
主要方法:
- 招募了45名女性 (15名非怀孕,30名怀孕晚期).
- 使用16S rRNA amplicon测序收集便样本.
- 采用Medoids周围的分区用于聚类和分析等离子体细胞因子.
主要成果:
- 确定了三个不同的肠道微生物群群 (PAM_1: Bacteroides; PAM_2: Bifidobacterium/Blautia,高的Firmicutes/Bacteroidota比率; PAM_3: Escherichia-shigella).
- PAM_1在非孕妇中占主导地位,并在怀孕期间流行.
- 微生物群群显示出不同的网络相关性和与血细胞因子的关联,在怀孕和非怀孕状态之间存在差异.
结论:
- 处于生育年龄的女性表现出三种肠道微生物群模式.
- 在怀孕晚期,肠道集群可以重塑形状,具有潜在的免疫调节作用.
- 在研究与怀孕相关的微生物组变化时,考虑肠道微生物群的差异至关重要.
相关概念视频
Anatomy of the Intestines
72.0K
Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
72.0K
Development of Immunocompetence
310
The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
310
Transcytosis of IgG
2.8K
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...
2.8K
Bacterial Flora of the Large Intestine
457
The gut microbiome is formed by a vast and diverse community of bacteria that colonizes our large intestine. These bacteria start residing in the gut from birth and continue diversifying throughout life, influenced by factors such as diet, lifestyle, and stress. The gut bacterial community also includes bacteria from food and those that enter the colon through the anus.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
457


