%0 Journal Article %T Molecular signature of penumbra in acute ischemic stroke: a pilot transcriptomics study %A Alexis N. Simpkins %A Amie W. Hsia %A Devon Kelley %A John K. Lynch %A John M. Hallenbeck %A Kory R. Johnson %A Lawrence L. Latour %A Marie Luby %A Richard Leigh %A Richard T. Benson %J Archive of "Annals of Clinical and Translational Neurology". %D 2019 %R 10.1002/acn3.757 %X We aimed to characterize peripheral blood gene expression profile of penumbra defined as MRI perfusion¨Cdiffusion mismatch (PD MM) in peripheral blood of patients with acute ischemic stroke. We studied 23 patients. Perfusion¨Cdiffusion mismatch volume was observed to be associated and significantly correlated with the expression of 34 genes including those related to inflammation, SUMOylation, and coagulation; while lipopolysaccharide inhibition was identified to be a candidate upstream regulator of these processes (z©\score £¿2.38, P = 0.04). Penumbral volume is correlated with a specific gene expression profile in the peripheral blood characterized by overlap of inflammatory and neuroprotective pathways that are regulated by lipopolysaccharide inhibition %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6469246/