Second-Generation Recombinant Hemoglobin Molecules Do Not Stimulate Sphincter of Oddi, Gallbladder, or Duodenal Motility in the Australian Brush-Tailed Possum

Abstract

BACKGROUND: Several studies have investigated the effects of hemoglobin-based oxygen carriers on gastrointestinal motility. Diaspirin cross-linked hemoglobin reduces sphincter of Oddi trans-sphincteric flow and increases duodenal motility in the Australian brush-tailed possum, effects attributed to nitric oxide (NO) scavenging. Recently, second-generation recombinant hemoglobin molecules with reduced NO scavenging ability have been developed.