Urinary neopterin, a new marker of the neuroinflammatory status in amyotrophic lateral sclerosis.

To comprehensively assess whether neopterin in urine could be a candidate biomarker for determining the neuroinflammatory status in ALS.We performed an observational, cross-sectional study in 81 pALS, 68 age- and sex-comparable healthy controls (HC), 14 patients affected by MS and 24 OND patients. ALS patients underwent a neurological evaluation to assess the global functional status evaluated by Amyotrophic Lateral Sclerosis Functional Rating Scale-Revised (ALSFRS-R) and the disease progression rate. Urinary neopterin concentrations were determined by high-performance liquid chromatography method and were recorded at the time of first examination to assess their effect on disease severity and survival.Urinary neopterin was significantly higher in pALS (263.90 [198.71-474.90]) compared to MS (155.28 [131.74-190.38], p =  

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