Associations between serum L-arginine and ficolins in the early phase of acute ischemic stroke - A pilot study.

•The interplay between the L-arginine and the lectin pathway in patients with acute ischemic stroke was investigated here.•Early consumption of ficolin-3 was found to be associated with complications such as post-stroke infection.•The protective role of arginine presumed by improving the cerebral microcirculation in a prothrombotic environment induced by complement activation.