Tacrolimus ameliorates cerebral vasodilatation and intracranial hypertension in the rat with portacaval anastomosis and hyperammonemia
Thomas Dethloff, Bent Adel Hansen, Fin Stolze Larsen – 29 June 2004 – Arterial hyperammonemia and cerebral vasodilatation correlate with cerebral herniation in patients with fulminant hepatic failure (FHF). Tacrolimus is a calcineurin inhibitor that passes the blood‐brain barrier and may increase cerebrovascular tone and restrict cerebral ammonia influx. In this study, we determined if tacrolimus prevents cerebral vasodilatation and high intracranial pressure (ICP) in the rat with portacaval anastomosis (PCA) challenged to high arterial ammonia (NH4+) concentration.