老老鼠的呼吸功能障碍可能与炎症和肺纤维化有关,这些炎症和肺纤维化是由高酸血症引起的
Ana Asenjo-Bueno1, Elena Alcalde-Estévez1, Gemma Olmos1,2,3
1Departamento de Biología de Sistemas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain.
European journal of clinical investigation
|August 19, 2024
概括
与年龄相关的高酸盐水平 (高酸盐血) 会导致小鼠的肺炎,纤维化和呼吸功能不佳. 这些有害影响与ET-1和NFkB通路有关.
科学领域:
- 肺部医学 肺部医学
- 衰老研究研究 衰老研究
- 分子生物学分子生物学
背景情况:
- 老化的肺自然会经历功能衰退.
- 与年龄相关的高酸血是这些呼吸系统变化的潜在原因之一.
研究的目的:
- 调查与年龄相关的高酸血症在与年龄相关的肺功能障碍中的作用.
- 阐明涉及ET-1和NFkB的潜在分子机制.
主要方法:
- 使用老鼠老化模型 (C57BL6) 和用β-糖酸盐 (BGP) 治疗的人类肺纤维细胞.
- 通过囊镜评估呼吸功能,并分析肺部结构,酸盐水平,细胞因子和基因/蛋白质表达 (纤维化,炎症,ET-1系统).
主要成果:
- 老老鼠表现出高酸血症,肺纤维化,弹性质损失,高水平的促炎细胞因子,以及呼吸功能受损.
- 在纤维细胞中BGP治疗通过NFkB激活诱导炎症和纤维化,增加ECE-1和ET-1表达.
- 抑制NFkB或ET-1通路,或老老鼠的低酸盐饮食,改善了这些肺病理.
结论:
- 与年龄相关的高酸血是肺炎,纤维化和老年小鼠功能衰退的重要驱动因素.
- ET-1和NFkB信号通路是这些高酸血症引起的肺部变化的关键媒介.
- 饮食中酸盐限制可能提供一种治疗策略,以减轻与年龄相关的肺损伤.
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