在骨质疏松症患者的肠道菌群的表征基于16S rDNA测序
Mengyue Sun1, Yuanyuan Liu2, Shan Tang2
1Department of Geratology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, Jiangsu, 223300, People's Republic of China.
International journal of general medicine
|September 30, 2024
概括
肠道微生物组分析显示,与健康个体相比,骨质疏松症患者的微生物特征不同. 像Akkermansia和Klebsiella这样的特定细菌可以作为骨质疏松症诊断和治疗策略的生物标志物.
科学领域:
- 微生物学 微生物学
- 胃肠病学 胃肠病学
- 整形外科 整形外科 整形外科
背景情况:
- 骨质疏松症 (OP) 是一种骨疾病,其特点是骨矿物质密度 (BMD) 低.
- 肠道微生物群的改变与各种系统性疾病有关,包括代谢性骨疾病.
研究的目的:
- 研究OP患者和健康个体之间的肠道微生物组成的差异.
- 探索特定的肠道细菌和BMD之间的相关性.
- 为了确定OP的潜在微生物生物标志物.
主要方法:
- 来自43名OP患者和24名健康对照者的便样本的16S rDNA测序.
- 统计分析包括克鲁斯卡尔-瓦利斯和LEfSe的微生物组成差异.
- 斯皮尔曼相关性来评估肠道菌群和骨质结构之间的关系.
- PICRUSt用于功能通路预测.
主要成果:
- 在OP患者和健康个体之间观察到肠道微生物群落的显著差异.
- 在OP患者中发现的关键细菌生物标志物包括Klebsiella,Escherichia-Shigella和Akkermansia.
- 便细菌在健康人群中更为丰富.
- 阿克尔曼西亚与腰部BMD负相关,而克莱布西埃拉和埃舍里希亚-希格拉与大腿部和部BMD负相关.
- 体细菌显示出与BMD的正相关性.
结论:
- 在OP患者和健康个体之间,肠道菌群的组成显著不同.
- 阿克尔曼西亚,克莱布西拉和埃舍里希亚-希格拉显示出作为骨质疏松症诊断生物标志物的潜力.
- 准肠道微生物群可能为OP提供新的治疗策略.
相关概念视频
Bacterial Flora of the Large Intestine
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.
Introduction to the Human Microbiota
Microorganisms colonize various regions of the human body, including the mouth, nasal passages, throat, stomach, intestines, urogenital tract, and skin. The total number of microbial cells is estimated to range from 10¹³ to 10¹⁴—comparable to, or exceeding, the number of human somatic cells. This host–microbiome relationship has led to the conceptualization of humans as supraorganisms, wherein microbial communities perform vital roles in development, immunity, and disease...
Development of Human Microbiota
The human microbiota begins developing at birth and undergoes continual change as we age. Infancy marks a critical period of microbial sensitivity, offering a “window of opportunity” during which beneficial microbes help mature the immune system. By age three, children typically develop a more stable and diverse microbial community. Newborns acquire microbes from their immediate environment; vaginal delivery favors maternal vaginal microbes, while cesarean births favor microbes from the skin...
Microbiota 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,...
Microbiota of the Large Intestine
The large intestine hosts the most densely populated microbial ecosystem in the human body. This complex community primarily consists of anaerobic bacteria, with Bacillota (formerly Firmicutes) and Bacteroidota (formerly Bacteroidetes) as the predominant groups. The distribution of these microbes varies along different sections of the large intestine, influenced by local environmental factors such as oxygen availability and nutrient composition.The cecum, located at the beginning of the large...
Microbiota of the Urogenital Tract
The human urogenital system, once thought to be sterile in healthy individuals, is now recognized as a complex microbial habitat. Advancements in molecular sequencing techniques have revealed that even in healthy adults, the kidneys and bladder harbor microbial populations similar to those found in the distal urethra, albeit in much lower abundance. These resident microorganisms, while generally innocuous, can become opportunistic pathogens under conditions that alter the urogenital...


