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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Early up-regulation of intercellular adhesion molecule-1 and vascular cell adhesion molecule-1 expression in rats with hemorrhagic shock and resuscitation.

This study evaluated the effect of resuscitation fluids on intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1). Sprague-Dawley rats (n = 36) were subjected to a 27 mL/kg hemorrhage over 5 min followed by a 1 h shock and 1 h resuscitation. Animals groups included: 1) cannulation only (Sham); 2) hemorrhage only (NR); 3) resuscitation with 1:1 shed blood (Blood); 4) resuscitation with 3:1 lactated Ringer's (81 mL/kg, 3LR+); 5) no hemorrhage but infusion with 3:1 lactated Ringer's (3LR); and 6) resuscitation with .36:1 hypertonic saline (7.5%, 9.7 mL/kg, HTS). At the end of resuscitation, the spleen and lung were harvested for detection of adhesion molecule mRNA and protein by RT-PCR and immunostaining. ICAM-1 and VCAM-1 expression exhibited the following pattern: 3LR+ > HTS approximate to 3LR > Blood approximate to NR approximate to Sham. VCAM-1 mRNA in the lung of the 3LR+ group was 2 or more times more than the groups of Sham, NR, Blood, and 3LR (p < .05). ICAM-1 and VCAM-1 mRNA in the spleen was significantly increased in the 3LR+ group compared with the groups of Sham, NR, and Blood (p < .05). Animals in the 3LR+ group showed enhanced staining for ICAM-1 in the pulmonary microvessels and in the marginal and trabecular areas of the spleen. Pulmonary edema and inflammatory cell infiltration were observed only in the 3LR+ group. In summary, resuscitation with LR following hemorrhagic shock induced immediate up-regulation of ICAM-1 and VCAM-1, which was associated with tissue injury. Thus, the type of resuscitation fluid used affected resuscitation injury.[1]


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