Acute phase response in Wistar rats after controlled hemorrhage
2011
Stepanović, J., Faculty of Veterinary Medicine, Belgrade (Serbia) | Maličević, Ž., Military Medical Academy, Belgrade (Serbia). Institute for Medical Research, Belgrade,Serbia | Andrić, N., Faculty of Veterinary Medicine, Belgrade (Serbia) | Nikolovski-Stefanović, Z., Faculty of Veterinary Medicine, Belgrade (Serbia)
After injury the acute-phase response of the organism activates mechanisms which imply the release of cytokines, stress hormones, and mediators of pain and inflammation. The main function of the acutephase response is to hinder further damage of the injured tissue by activating reparative processes. The increase in the concentration of acute phase proteins and the concurrent decrease in albumins and prealbumins indicate that there is a strong link between the liver and the traumatized site. Considering bleeding to be a major injury it can be supposed that it can result in changes in acute phase proteins concentrations despite the fact that it is not directly related to inflammatory reactions. In order to confirm this presumption the concentration changes in negative and positive acute phase proteins in Wistar rats' blood plasma were measured during a 10 day period after controlled bleeding. The result of the therapeutic effects of transfusion on acute phase proteins was estimated in a group of rats in the so called Hospital Stage at which the blood loss was recovered by citrate blood transfusions. At the end of the 10th day the rats were monitored for an additional 10 day period. The obtained results confirm that bleeding is an impressive trauma and the acute phase response results in a significant change in acute phase proteins. These changes arise quickly, the highest concentrations were achieved within the first 24 to 72h and thereon they slowly declined.
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