PMID- 21186376 OWN - NLM STAT- MEDLINE DCOM- 20111209 LR - 20101227 IS - 1205-7541 (Electronic) IS - 0008-4212 (Linking) VI - 89 IP - 1 DP - 2011 Jan TI - Coagulation activation in an experimental pneumonia model in malnourished mice. PG - 41-9 LID - 10.1139/y10-102 [doi] AB - Malnutrition induces a decrease in immunity that affects the ability of the organism to deal with an infectious challenge. The clotting system is considered a branch of immunity and its activation is important in the pathogenesis of an infectious disease. This work was conducted to determine coagulation modifications in malnourished hosts before and during infection. Weaned mice were malnourished via a protein-free diet. Well-nourished control mice (WNC) consumed a balanced conventional diet. Malnourished mice (MN) and WNC were challenged intranasally with Streptococcus pneumoniae. Blood, bronchoalveolar lavages (BAL), and lung samples were taken at different times post infection. The results were that MN showed altered hemostatic tests and fibrin(ogen) deposits in the lung. Thus, an increase in thrombin-antithrombin complexes (TATc) in plasma and BAL was observed. In the MN group, infection induced a rise in TATc in plasma and BAL and increased plasma fibrinogen and fibrin(ogen) deposits in the lung. A decrease in activated protein C and antithrombin in BAL and an early decrease followed by an increase in plasma Factor VIII were also observed. Thus, malnourishment induced a procoagulant state increased by infection. This is the first work that presents results of an exhaustive study of coagulation in malnourished hosts before and during an infection. FAU - Zelaya, Hortensia AU - Zelaya H AD - Universidad Nacional de Tucuman, San Miguel de Tucuman, Argentina. FAU - Haro, Cecilia AU - Haro C FAU - Laino, Jonathan AU - Laino J FAU - Alvarez, Susana AU - Alvarez S FAU - Aguero, Graciela AU - Aguero G LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Canada TA - Can J Physiol Pharmacol JT - Canadian journal of physiology and pharmacology JID - 0372712 SB - IM MH - Animals MH - Blood Coagulation/*physiology MH - Bronchoalveolar Lavage Fluid/microbiology MH - *Disease Models, Animal MH - Hemostasis/physiology MH - Lung/blood supply/metabolism/microbiology MH - Male MH - Malnutrition/*blood/*complications/microbiology MH - Mice MH - Pneumonia, Pneumococcal/blood/*etiology/microbiology MH - Protein Deficiency/blood/*complications/microbiology EDAT- 2010/12/28 06:00 MHDA- 2011/12/14 06:00 CRDT- 2010/12/28 06:00 PHST- 2010/12/28 06:00 [entrez] PHST- 2010/12/28 06:00 [pubmed] PHST- 2011/12/14 06:00 [medline] AID - y10-102 [pii] AID - 10.1139/y10-102 [doi] PST - ppublish SO - Can J Physiol Pharmacol. 2011 Jan;89(1):41-9. doi: 10.1139/y10-102.