Nuclear Magnetic Resonance Spectroscopic Analysis of Urinary Metabolome in Sarcoidosis (RMN-SARCURINES)

"Sarcoidosis is a systemic granulomatous disease of unknown cause(s).Determining disease activity is a major element in the treatment decision. 1H- Nuclear magnetic resonance (NMR) spectroscopy allows the identification of biomarkers in different pathologies and in particular in a pilot study of saliva of patients with sarcoidosis. Applications to sarcoidosis are still rare, having concerned only serum and saliva. In this context we hypothesize the existence of a difference in the metabolic products found in the urine of sarcoidosis patients with different degrees of activity and/or disease severity. We designed an analysis of urinary metabolomics in sarcoidosis patient using NMR spectroscopy with multivariate statistical analysis, followed by metabolite identification and pathway analysis. "