The present provides a Positional Isotopomer NMR Tracer Analysis (PINTA) method that can be used to noninvasively assess rates of hepatic mitochondrial oxidation (VCS) and/or pyruvate carboxylase (VPC) flux in a subject. In certain embodiments, the methods utilize a combined NMR/gas chromatography-mass spectrometry analysis of plasma following infusion of [3-13C]lactate and glucose tracer. The method of the invention provides investigators with a tool to non-invasively examine the role of altered hepatic mitochondrial metabolism and study the effects of therapeutic interventions for the treatment of non-alcoholic fatty liver disease (NAFLD), non-alcoholic steatohepatitis (NASH), and type 2 diabetes (T2D).
本研究提供了一种定位同位素核磁共振示踪分析(
PINTA)方法,可用于无创评估受试者肝线粒体氧化(
VCS)和/或
丙酮酸羧化酶(VPC)通量的速率。在某些实施方案中,该方法在输注[3-13C]
乳酸盐和
葡萄糖示踪剂后,利用核磁共振/气相色谱-质谱联用分析血浆。本发明的方法为研究人员提供了一种工具,可以非侵入性地检查肝线粒体代谢改变的作用,并研究治疗干预对治疗非
酒精性脂肪肝(NAFLD)、非
酒精性脂肪性肝炎(NASH)和 2 型糖尿病(T2D)的影响。