揭示氨酸路径与功能衰竭之间的联系
Carolla El Chamieh1, Sophie Liabeuf2,3, Islam Amine Larabi4,5
1Centre for Research in Epidemiology and Population Health (CESP), INSERM UMRS 1018, Université Paris-Saclay, Université Versailles Saint Quentin, Villejuif, France.
Kidney international reports
|June 9, 2025
概括
在慢性病 (CKD) 患者中,氨酸 (KA) 和氨酸与氨酸的比率升高表明功能衰竭的风险增加. 向氨基酸氨基转移酶可能会减缓CKD的进展.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 代谢途径 代谢途径
- 尿源性毒素的毒素.
背景情况:
- 类代谢物,特别是酸 (KA),被认为是尿素毒素,有助于慢性病 (CKD) 的进展.
- kynurenine 途径,涉及氨基酸氨基转移酶,代谢托并产生 KA.
研究的目的:
- 调查血清KA水平,KA与kynurenine的比率,以及CKD患者功能衰竭风险之间的关联.
- 用小鼠模型探索氨基酸氨基转移酶活性在纤维化中的作用.
主要方法:
- 在2406名CKD患者的前性队列研究 (CKD-REIN) 中,EGFR<60毫升/分钟/1.73米2.
- 血清KA和kynurenine通过液体染色学-并联质谱法测量.
- 考克斯模型评估了功能衰竭的风险;小鼠模型评估了基因表达和纤维化.
主要成果:
- 在5年的时间里,608名患者的病情进展到功能衰竭.
- 血清KA和KA与kynurenine比率的两倍增加与分别增加22%和20%的功能衰竭风险相关.
- 鼠标模型显示氨基酸氨基转移酶表达和纤维化之间存在正相关性;低蛋白饮食减少了这种表达.
结论:
- kynurenine 途径和氨基酸胺转移酶活性与功能衰竭有关.
- 抑制氨基酸氨基转移酶以减少KA积累是缓解CKD进展的潜在治疗策略.
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