在神经性膀患者中揭示慢性殖民的病原体特征
Seth A Reasoner1, Brendan T Frainey2, Owen F Hale3
1Division of Molecular Pathogenesis, Department of Pathology, Microbiology & Immunology, Vanderbilt University Medical Center, Nashville, TN.
bioRxiv : the preprint server for biology
|August 20, 2025
概括
患有分脊椎和神经性膀的儿童经历了反复的尿路感染 (UTI). 细菌适应,而不是抗生素耐药性,通过改变细胞外以逃避免疫力来驱动持续的殖民.
科学领域:
- 微生物学 微生物学
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 进化生物学 进化生物学
背景情况:
- 神经性膀,通常是由脊椎裂变引起的,导致慢性细菌殖民和尿路感染 (UTI).
- 了解神经性膀中的微生物动态对于开发有效的治疗方法至关重要.
研究的目的:
- 调查小便微生物组的生态和进化动态,在儿童和年轻成年人与脊柱裂变.
- 在神经性膀的背景下,描述微生物组成并确定适应机制.
主要方法:
- 开发了77名脊柱裂患者的纵向队列.
- 使用增强尿培养,16S rRNA测序和全基因组测序.
- 从临床微生物生物库分析了五年来前性和后性细菌分离物.
主要成果:
- 尿样显示了大量的病原体,如大肠杆菌和克莱布西拉菌.
- 确定了两个殖民模式:快速的菌株/物种循环或单一菌株的持久性.
- 细胞包膜基因的突变,而不是抗生素耐药性,与免疫和菌体逃避有关,表明适应性权衡.
结论:
- 通过细胞外修饰的细菌适应,有助于在神经性膀环境中持续存在.
- 这些适应包括免疫逃避和菌体易感性的改变.
- 这些发现为针对神经性膀慢性尿路感染的新型治疗策略提供了潜在的目标.
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