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Abstract
Sulfatide binds to P- and L-selectin, which play important roles in the initiation
of neutrophil–endothelial interactions. Sulfatide protects skin flaps from ischemia–reperfusion
injury. The purpose of this study was to evaluate the augmented protection when anti-rat
ICAM-1 and anti-rat LFA-1 antibodies are combined with sulfatide in the ischemia–reperfusion
model of rat skin flaps. Sulfatide was administered intravenously just before elevation
of the right abdominal epigastric flap, and monoclonal antibodies were injected 30
min before clamp release. The femoral artery and vein were clamped above and below
the epigastric vessels for 11 h and then the clamp was released. The administration
of both sulfatide and monoclonal antibodies significantly increased the flap surviving
area (6.58 ± 0.61 cm2 versus the group with monoclonal antibodies alone, 4.43 ± 0.32 cm2, P = 0.01). In the untreated rats the area was 1.86 ± 0.36 cm2. Histological examination 24 h after reperfusion in the group treated with sulfatide
and monoclonal antibodies showed only slight leukocyte invasion into the flap, and
myeloperoxidase activity 24 h after reperfusion was significantly reduced. This study
indicates that both sulfatide and monoclonal antibodies protect rat skin flaps from
ischemia–reperfusion injury.
Keywords
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© 2000 Academic Press. Published by Elsevier Inc. All rights reserved.