慢性脏疾病中的kynurenines和有氧运动能力:一个横截面和纵向研究
Helena Wallin1,2, Eva Jansson1,2, Sophie Erhardt3
1Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden.
慢性病 (CKD) 的有氧运动能力降低与更高水平的 kynurenines 有关, kynurenines 是托代谢产物. 这些发现表明,金林可能在CKD患者的运动限制中发挥作用.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學.
- 代谢途径 代谢途径
- 运动生理学 运动生理学
背景情况:
- 慢性病 (CKD) 与有氧运动能力 (ExCap) 的降低有关.
- (TRP) 代谢物,金氨酸 (KYN) 和金酸 (KYNA) 的积累可能有助于降低CKD中的ExCap.
- 在CKD中kynurenines和ExCap之间的关系以前没有被研究过.
研究的目的:
- 为了研究TRP,KYN和KYNA的血水平与非透析CKD患者的有氧ExCap之间的关联.
- 为了检查这些代谢物和ExCap在CKD患者的一个子集的五年随访期间的变化.
主要方法:
- 包括102名非透析CKD患者 (2-5期) 和54名健康对照.
- 使用最大循环人体表测试测量有氧ExCap.
- 血TRP,KYN和KYNA水平使用高性能液态染色学量化;功能通过GFR进行评估.
主要成果:
- 在基线时,基酸 (KYNA),KYN/TRP和KYNA/KYN的比率与CKD患者的ExCap有负相关性.
- 在基线上对GFR进行调整后,Kynurenines与GFR有显著的相关性,并且与ExCap没有独立的关联.
- 在五年内,KYN和KYN/TRP的增加与ExCap的降低有关,在GFR调整后,KYN/TRP仍然是一个独立的预测因子.
结论:
- 在CKD患者中,有氧ExCap与血kynurenine水平相反相关.
- 基因氨酸代谢物,特别是KYN/TRP比率,是慢性脏病中运动能力下降的显著预测因素,独立于随着时间的推移脏功能.
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