Is impaired cerebral vasoreactivity an early marker of cognitive decline in multiple sclerosis patients? Auteur(s): Metzger Aude, Le Bars E., Deverdun J., Molino F., Maréchal Bénédicte, Picot Marie-Christine, Ayrignac Xavier, Carra Clarisse, Bauchet Luc, Krainik Alexandre, Labauge Pierre, Menjot De Champfleur N. (Article) Publié: European Journal Of Radiology, vol. 28 p.1204-1214 (2018) Ref HAL: hal-01727597_v1 PMID 29026971 DOI: 10.1007/s00330-017-5068-5 WoS: 000424997600034 Exporter : BibTex | endNote 8 Citations Résumé: The link between cerebral vasoreactivity and cognitive status in multiple sclerosis remains unclear. The aim of the present study was to investigate a potential decrease of cerebral vasoreactivity in multiple sclerosis patients and correlate it with cognitive status.;Thirty-three patients with multiple sclerosis (nine progressive and 24 remitting forms, median age: 39 years, 12 males) and 22 controls underwent MRI with a hypercapnic challenge to assess cerebral vasoreactivity and a neuropsychological assessment. Cerebral vasoreactivity, measured as the cerebral blood flow percent increase normalised by end-tidal carbon dioxide variation, was assessed globally and by regions of interest using the blood oxygen level-dependent technique. Non-parametric statistics tests were used to assess differences between groups, and associations were estimated using linear models.;;Cognitive impairment in multiple sclerosis may be mediated through decreased cerebral vasoreactivity. Cerebral vasoreactivity could therefore be considered as a marker of cognitive decline in multiple sclerosis.;• Cerebral vasoreactivity does not differ between multiple sclerosis patients and controls. • Cerebral vasoreactivity measure is linked to cognitive impairment in multiple sclerosis. • Cerebral vasoreactivity is linked to level of education in multiple sclerosis. |