在人类真菌角膜炎中抗微生物的差异表达
Jia-Song Wang1, Xi Peng1, Zhao Zhao1
1Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei Province, China.
International journal of ophthalmology
|October 19, 2023
概括
抗微生物 (AMP) 在活性真菌角膜炎 (FK) 中升高. 人类β-防御素-2 (HBD-2) 和LL-37分别在Fusarium和Aspergillus角膜炎中发挥了特定的作用.
科学领域:
- 眼科医生 眼科 眼科
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
背景情况:
- 性角膜炎 (FK) 是一种严重的眼部感染.
- 抗微生物 (AMP) 在对病原体的天生的免疫力中至关重要.
- 了解AMP在FK中的作用可以为治疗策略提供信息.
研究的目的:
- 量化在活性FK和愈合后的角膜组织中各种AMP的表达.
- 调查与特定真菌物种相关的AMP表达的潜在差异.
主要方法:
- 角膜组织样本是从因严重的角膜瘤或角膜痕而接受状角膜整形手术的患者获得的.
- 使用定量实时PCR测量特定AMP的基因表达,包括人类β-防御素 (HBD) 变体和LL-37.
主要成果:
- 所有研究的AMP在活跃的FK样本中显示了与治愈样本相比,信使核糖核酸 (mRNA) 表达的升高.
- 在治愈的角膜组织中,HBD-1, -9,S100A8,S100A9和LL-37的构成性表达.
- 在Fusarium角膜炎中,HBD-2 mRNA水平显著高,而在Aspergillus角膜炎中,LL-37 mRNA水平显著升高.
结论:
- 在活跃的真菌角膜炎期间,AMPs的表达显著上调.
- 特定的AMP,特别是HBD-2和LL-37,表现出与Fusarium和Aspergillus物种相关的差异性表达模式.
- 这些发现表明,某些AMP在宿主对引起炎的不同真菌病原体的反应中起着有针对性的作用.
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