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The factors involved in shock-induced loss of gut barrier function remain to be defined fully and studies investigating gut injury have focused primarily on the systemic side of the intestine.Male Sprague-Dawley rats were subjected to a laparotomy (trauma) and 90 minutes of trauma sham shock (T/SS) or actual trauma (laparotomy) hemorrhagic shock (T/HS) (30 mm Hg). At 0, 30, 60, or 180 minutes after...
Amiloride, an inhibitor of Na + /H + exchangers and Na + channels has been shown recently to ameliorate both gut and lung injury in rats subjected to a combined insult of trauma and hemorrhagic shock (T/HS). We have shown previously that mesenteric lymph duct ligation prevents T/HS-induced lung endothelial injury and neutrophil activation, suggesting that toxic inflammatory...
Emerging data suggest a gender dimorphism in resistance and susceptibility to distant organ injury after mechanical and thermal trauma. The aim of this study was to determine the role that testosterone and estradiol play in modulating resistance or susceptibility to distant organ injury, and whether their effects were associated with differences in the production of nitric oxide.Adult male, female,...
Background. Post-shock mesenteric lymph kills and injures endothelial cells (ECs), but neither the mechanism nor the mediators of lymph's toxic effect are known. Thus, in these studies we investigated and characterized potential factors that may be involved in lymph's toxic effect on ECs. Methods. Lymph was collected hourly from rats before shock, during the shock period, and for 6 hours post-shock...
Background. We have previously documented that lymphatic duct division protects against shock-induced lung injury when tested 3 hours post-shock and that lymph collected at 3 hours post-shock increases endothelial cell monolayer permeability. However, whether lymph collected at other time points post-shock also increases endothelial cell permeability is not known. We tested the protective effects...
Background. We have previously documented that lymphatic duct division protects against shock-induced lung injury when tested 3 hours post-shock and that lymph collected at 3 hours post-shock increases endothelial cell monolayer permeability. However, whether lymph collected at other time points post-shock also increases endothelial cell permeability is not known. We tested the protective effects...
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