pectin甲基化对肠道微生物群的影响及其在幼稚小鼠中的免疫调节性质
Hanna Steigerwald1, Frank Blanco-Pérez1, Andrea Macías-Camero2
1Paul-Ehrlich-Institut, Federal Institute for Vaccines and Biomedicines, Molecular Allergology, 63225 Langen, Germany.
Carbohydrate polymers
|March 29, 2024
概括
饮食纤维称为pectins,特别是高甲甲 (HMP) 和低甲甲 (LMP),改变肠道微生物群和免疫反应. HMP优先修改了肠道微生物群并减少了炎症,这表明对炎症性疾病有好处.
科学领域:
- 营养科学 营养科学
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
背景情况:
- 素是具有已知的免疫调节作用的食纤维.
- pectin的分类取决于化 (DE) 的程度:高甲酸pectin (HMP) 或低甲酸pectin (LMP).
研究的目的:
- 调查点甲基化 (HMP与LMP) 对肠道微生物群组成的影响.
- 评估HMP和LMP在原始小鼠中的免疫调节特性.
- 了解点的结构如何影响发酵性和代谢物生产.
主要方法:
- 在小鼠中服用LMP或HMP的食补充剂.
- 分析肠道微生物群的组成.
- 便样本的代谢分析 (短链脂肪酸,胆酸).
- 免疫细胞的流细胞计 (FACS) 分析.
- 对血清抗体水平 (IgG,IgA) 的测量.
主要成果:
- 无论是HMP还是LMP,都改变了肠道微生物群的组成,特别是增加了Bacteroides,而HMP显示出更强的效果.
- 素对短链脂肪酸和胆酸的影响不同,表明发酵效率不同 (LMP发酵效率更高).
- 这两种pectin都增加了血清IgG和IgA水平.
- HMP显著降低了肠膜本身的炎症细胞.
结论:
- 的结构性质 (化程度) 决定了它的发酵性,对肠道微生物群的影响,代谢物产生和免疫系统调节.
- 高甲烯 (HMP) 显示出改变肠道微生物群和抑制促炎性免疫反应的优先能力.
- 这些发现表明,HMP在控制炎症疾病方面可能发挥有益作用.
更多相关视频
08:24Injections of Lipopolysaccharide into Mice to Mimic Entrance of Microbial-derived Products After Intestinal Barrier Breach
Published on: May 2, 2018
19.5K
08:53Investigating the Alleviating Effects of Bacillus cereus Administration on Colitis through Gut Microbiota Modulation
Published on: July 27, 2022
827
相关概念视频
01:27Microbiota of the Stomach and Small Intestine
The human gastrointestinal (GI) tract is characterized by distinct physicochemical conditions that shape its microbial communities. Among these, the stomach presents a particularly challenging environment for microbial colonization due to its highly acidic pH, ranging from 1 to 3. This extreme acidity effectively limits microbial density. However, certain acid-tolerant microorganisms are capable of surviving in this niche. Notably, Helicobacter pylori can colonize the gastric mucosa,...
01:18Functions of the Gut Microbiota
The gut microbiota includes trillions of microorganisms that colonize the human gastrointestinal tract, including bacteria, archaea, viruses, and fungi. This complex ecosystem plays a critical role in maintaining intestinal and systemic health. Most of these microbes inhabit the large intestine, establishing a relatively stable and diverse community that contributes to gut homeostasis through various metabolic, immunological, and protective mechanisms.Dominant bacterial phyla, such as...