The present invention provides methods for detecting and/or treating a subject having an aneurysm or at risk for developing an aneurysm. It has been discovered that a key metabolite of the kynurenine (Kyn) pathway, a major route for the metabolism of essential amino acid tryptophan (Trp) into nicotinamide adenine dinucleotide (NAD+), plays a critical role in the formation of aneurysms, for example abdominal aortic aneurysms. In particular, it has been discovered that 3-Hydroxyanthranilic acid (3-HAA), a product of kynureninase (KYNU), plays a causative role in the formation of aneurysms by, for example exerting pro-inflammatory effects on vascular smooth muscle cells. It has further been discovered that elevated levels of 3-HAA are indicative of the presence and/or progression of an aneurysm, and 3-HAA levels correlate with the size (aortic diameter) of the aneurysm.
本发明提供了检测和/或治疗患有动脉瘤或有罹患动脉瘤风险的受试者的方法。现已发现,犬尿
氨酸(Kyn)途径的一种关键代谢物--将必需
氨基酸色
氨酸(Trp)代谢为烟酰胺
腺嘌呤二核苷酸(
NAD+)的主要途径--在动脉瘤(例如腹主动脉瘤)的形成中起着关键作用。特别是,研究发现,3-羟基
氨基
苯甲酸(3-H
AA)是犬
尿苷酶(KYNU)的产物,通过对血管平滑肌细胞产生促炎作用等方式,在动脉瘤的形成过程中起着致病作用。研究进一步发现,3-H
AA 水平的升高表明动脉瘤的存在和/或发展,3-H
AA 水平与动脉瘤的大小(主动脉直径)相关。