BACKGROUND AND PURPOSE: Our previous studies found that deferoxamine reduces intracerebral hemorrhage (ICH)-induced brain injury in rats. The current study examined whether deferoxamine reduces brain injury in a piglet ICH model. METHODS: Pigs received an injection of autologous blood into the right frontal lobe. Deferoxamine (50 mg/kg, IM) or vehicle was administered 2 hours after ICH and then every 12 hours up to 7 days. Animals were killed 3 or 7 days later to examine iron accumulation, white matter injury, and neuronal death. RESULTS: ICH resulted in development of a reddish perihematomal zone, and iron accumulation, ferritin upregulation, and neuronal death within that zone. Deferoxamine reduced the perihematomal reddish zone, white matter injury, and the number of Perls', ferritin, and Fluoro-Jade C-positive cells. CONCLUSIONS: Iron accumulation occurs in the piglet brain after ICH. Deferoxamine reduces ICH-induced iron buildup and brain injury in piglets.
BACKGROUND AND PURPOSE: Our previous studies found that deferoxamine reduces intracerebral hemorrhage (ICH)-induced brain injury in rats. The current study examined whether deferoxamine reduces brain injury in a piglet ICH model. METHODS:Pigs received an injection of autologous blood into the right frontal lobe. Deferoxamine (50 mg/kg, IM) or vehicle was administered 2 hours after ICH and then every 12 hours up to 7 days. Animals were killed 3 or 7 days later to examine iron accumulation, white matter injury, and neuronal death. RESULTS:ICH resulted in development of a reddish perihematomal zone, and iron accumulation, ferritin upregulation, and neuronal death within that zone. Deferoxamine reduced the perihematomal reddish zone, white matter injury, and the number of Perls', ferritin, and Fluoro-Jade C-positive cells. CONCLUSIONS:Iron accumulation occurs in the piglet brain after ICH. Deferoxamine reduces ICH-induced iron buildup and brain injury in piglets.
Authors: Ya Hua; Takehiro Nakamura; Richard F Keep; Jimin Wu; Timothy Schallert; Julian T Hoff; Guohua Xi Journal: J Neurosurg Date: 2006-02 Impact factor: 5.115
Authors: Takehiro Nakamura; Richard F Keep; Ya Hua; Timothy Schallert; Julian T Hoff; Guohua Xi Journal: J Neurosurg Date: 2004-04 Impact factor: 5.115
Authors: G Xi; K R Wagner; R F Keep; Y Hua; G M de Courten-Myers; J P Broderick; T G Brott; J T Hoff Journal: Stroke Date: 1998-12 Impact factor: 7.914
Authors: Kenneth R Wagner; Frank R Sharp; Timothy D Ardizzone; Aigang Lu; Joseph F Clark Journal: J Cereb Blood Flow Metab Date: 2003-06 Impact factor: 6.200
Authors: K R Wagner; G Xi; Y Hua; M Kleinholz; G M de Courten-Myers; R E Myers; J P Broderick; T G Brott Journal: Stroke Date: 1996-03 Impact factor: 7.914