相关实验视频
Updated: Jul 20, 2026
07:35
A Non-invasive Way to Isolate and Phenotype Cells from the Conjunctiva
Published on: July 5, 2017
10.2K
眼患者明显的眼睛表面微生物组与局部免疫失调相关
Nimisha Rajiv Kumar1, Pooja Khamar2, Ramaraj Kannan1
1GROW Research Laboratory, Narayana Netralaya Foundation, Bangalore, India.
Investigative ophthalmology & visual science
|January 27, 2025
概括
角质 (KC) 患者的眼表面微生物组显示出一种独特的特征. 这种KC微生物组与疾病严重程度,免疫细胞和撕裂因子相关,这表明它在免疫失调中起作用.
科学领域:
- 眼科医生 眼科 眼科
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
背景情况:
- 角膜 (KC) 涉及不规则的形和角膜弱,与免疫状况的改变有关.
- 组织居民微生物在眼部条件中的作用,特别是KC,仍未得到充分研究.
- 了解眼皮表面微生物群与KC免疫反应的联系至关重要.
研究的目的:
- 在患有角 (KC) 的患者中研究眼表面微生物组合.
- 为了将KC眼部微生物组与免疫细胞概况和撕裂分子因子相关联.
- 探索眼睛微生物组与KC的免疫失调之间的潜在联系.
主要方法:
- 对62名KC患者和21名对照进行了角膜拓和眼睛表面检查.
- 使用16S rRNA基因测序进行微生物组概况分析,分析了眼皮表面的拭子.
- 眼分子因子和免疫细胞使用多重ELISA和流细胞计量来量化.
主要成果:
- 鉴定了一种独特的KC微生物组特征,其中Alphaproteobacteria增加,Actinobacteria/Firmicutes_Bacilli减少.
- 特定的属 (例如,Microbacterium,Cutibacterium) 与角质测量和角膜厚度相关.
- 免疫因子 (例如IL-21,VEGF) 和免疫细胞 (例如CD45+) 与特定细菌属的相关性.
结论:
- 一个独特的眼睛表面微生物群签名与角膜 (KC) 相关.
- 这种KC微生物组的特征与疾病严重程度,免疫细胞种群和撕裂分子因素相关.
- 这些发现表明,眼部微生物组可能会导致KC的免疫失调,提供潜在的治疗点.
相关概念视频
01:27The Skin Microbiota
The human skin serves as a complex ecosystem inhabited by a diverse community of microorganisms, including bacteria, fungi, and viruses. This microbiome plays a critical role in maintaining skin health and defending against pathogenic invaders. The composition of microbial communities varies significantly across different regions of the body, influenced primarily by the local levels of moisture and sebum.Regional Variation in Skin MicrobiotaCutibacterium acnes predominantly colonizes sebaceous...
01:22Microbiome of the Eye
The human eye has a specialized microbiota that reflects its unique anatomical and immunological environment. This low-biomass microbial community predominantly colonizes the conjunctiva and eyelid margins, playing a vital role in ocular surface homeostasis and defense. Despite its proximity to the richly colonized facial skin, the ocular surface maintains a distinct microbial profile due to continuous mechanical and biochemical defense mechanisms.The conjunctival surface hosts fewer microbial...
01:27The Oral Microbiota
The oral microbiome includes a complex ecosystem comprising over 700 microbial species, identified through genomic sequencing and culture-based analyses to date. This community includes a core microbiome, found universally among individuals, and a variable component influenced by environmental factors such as diet, lifestyle, and host genetics. Site-specific conditions, including oxygen gradients, pH levels, and nutrient availability, determine the spatial distribution of these microorganisms...