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| Author(s): |
Luana Beatriz Vitoretti
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto de Ciências Biomédicas (ICB/SDI) |
| Defense date: | 2014-11-26 |
| Examining board members: |
Wothan Tavares de Lima;
Patricia Castelucci;
Joilson de Oliveira Martins;
Renato Sergio Poggetti;
Ana Carolina Thomaz Takakura
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| Advisor: | Wothan Tavares de Lima |
| Abstract | |
Cytokines generated during intestinal I/ R promote acute lung injury and may cause immunosuppression. We investigate if the pulmonary inflammation observed after several days of reperfusion is related to changes in the immune system. Male Wistar rats were subjected to occlusion of the superior mesenteric artery for 45 min and reperfused for 2 h , 3, 5 or 20 days. We observed that after 5 days of reperfusion enterobacteraceae are present in mesenteric lymph nodes and that circulating neutrophils are more effective against pathogens, whereas leukocytes from the peritoneal cavity are not. We noted increase of IL-1b, TNF-a, IL-17, IL -4 and decrease of IL-10 in lung explant and increase of IL-1b, IFN-g and LDH in serum. Furthermore, the levels of nitrites, corticosterone, HMGB -1, uric acid, cAMP, as well as respiratory function, did not change. Based on the foregoing, we observed that alterations in regulatory mechanisms of inflammation and immune system after contribute to pulmonary and systemic inflammation, but do not alter pulmonary mechanical function. (AU) | |