AST‐120 (spherical carbon adsorbent) lowers ammonia levels and attenuates brain edema in bile duct–ligated rats
Cristina R. Bosoi, Christian Parent‐Robitaille, Keith Anderson, Mélanie Tremblay, Christopher F. Rose – 7 March 2011 – The pathogenesis of hepatic encephalopathy is multifactorial, involving gut‐derived toxins such as ammonia, which has been demonstrated to induce oxidative stress. Therefore, a primary hepatic encephalopathy treatment target is reducing ammonia production in the gastrointestinal tract. AST‐120, an oral adsorbent of engineered activated carbon microspheres with surface areas exceeding 1600 m2/g, acts as a sink for neurotoxins and hepatotoxins present in the gut.