• Rania Abutarboush, Saad H Mullah, Biswajit K Saha, Ashraful Haque, Peter B Walker, Chioma Aligbe, Georgina Pappas, Lam Thuy Vi Tran Ho, Francoise G Arnaud, Charles R Auker, Richard M McCarron, Anke H Scultetus, and Paula Moon-Massat.
• NeuroTrauma Department, Naval Medical Research Center, Silver Spring, MD, USA.
• Microcirculation. 2018 Apr 1; 25 (3): e12441.

ObjectiveThe aim of this study was to assess, in two experiments, the safety and efficacy of the PFC emulsion Oxycyte as an oxygen therapeutic for TBI to test the hypothesis that early administration of this oxygen-carrying fluid post-TBI would improve brain tissue oxygenation (Pbt O2 ).MethodsThe first experiment assessed the effects of Oxycyte on cerebral vasoactivity in healthy, uninjured rats using intravital microscopy. The second experiment investigated the effect of Oxycyte on cerebral Pbt O2 using the PQM in TBI model. Animals in the Oxycyte group received a single injection of Oxycyte (6 mL/kg) shortly after TBI, while NON animals received no treatment.ResultsOxycyte did not cause vasoconstriction in small- (<50 μm) or medium- (50-100 μm) sized pial arterioles nor did it cause a significant change in blood pressure. Treatment with Oxycyte while breathing 100% O2 did not improve Pbt O2 . However, in rats ventilated with ~40% O2 , Pbt O2 improved to near pre-TBI values within 105 minutes after Oxycyte injection.ConclusionsAlthough Oxycyte did not cause cerebral vasoconstriction, its use at the dose tested while breathing 100% O2 did not improve Pbt O2 following TBI. However, Oxycyte treatment while breathing a lower enriched oxygen concentration may improve Pbt O2 after TBI.© 2018 John Wiley & Sons Ltd.

22 keywords...

hide…