PMID- 16884911 OWN - NLM STAT- MEDLINE DCOM- 20061017 LR - 20071115 IS - 1043-4666 (Print) IS - 1043-4666 (Linking) VI - 34 IP - 5-6 DP - 2006 Jun TI - Changes in the pro-inflammatory cytokine production and peritoneal macrophage function in rats with chronic heart failure. PG - 284-90 AB - Chronic heart failure (CHF) is a state of immune activation, and pro-inflammatory cytokines play an important role in its development and progression. Macrophages (Mphis), when activated, are the main source of pro-inflammatory cytokines. We measured interleukin-6 (IL-6), interleukin (IL-1beta) and tumor necrosis factor - alpha (TNF-alpha) production after lipopolysaccharide (LPS)-stimulation, as well as peritoneal Mphis migration, phagocytic capacity, chemotaxis index, and hydrogen peroxide production, in an attempt to clarify the role of this cell in an animal model of CHF. Ligature of the left coronary artery or sham operation was performed in adult Wistar rats. After 12 weeks, resident and total cell number, phagocytic capacity, chemotaxis index, and hydrogen peroxide production in Mphis were significantly higher in CHF than in control rats. The production of IL-6 and TNF- alpha was similarly significantly enhanced in CHF as compared with controls. Mphis obtained from CHF rats were more responsive to LPS, suggesting the existence, in vivo, of possible factor(s) modulating the production of pro-inflammatory cytokines. The results demonstrated that there is modification of peritoneal Mphis function along CHF development, possibly contributing to the pathophysiological process in the establishment of CHF. FAU - Batista, M L Jr AU - Batista ML Jr AD - Molecular Biology of the Cell Group, Institute of Biomedical Sciences, University of Sao Paulo, Brazil. migueljr@iusp.br FAU - Santos, R V T AU - Santos RV FAU - Cunha, L M AU - Cunha LM FAU - Mattos, K AU - Mattos K FAU - Oliveira, E M AU - Oliveira EM FAU - Seelaender, M C L AU - Seelaender MC FAU - Costa Rosa, L F B P AU - Costa Rosa LF LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060801 PL - England TA - Cytokine JT - Cytokine JID - 9005353 RN - 0 (Cytokines) RN - 0 (Lipopolysaccharides) SB - IM MH - Animals MH - Blood Cell Count MH - Body Weight MH - Cytokines/*biosynthesis MH - Heart Failure/chemically induced/*metabolism MH - Inflammation/metabolism MH - Lipopolysaccharides/pharmacology MH - Macrophages, Peritoneal/cytology/drug effects/*metabolism MH - Male MH - Rats MH - Rats, Wistar EDAT- 2006/08/04 09:00 MHDA- 2006/10/18 09:00 CRDT- 2006/08/04 09:00 PHST- 2006/03/29 00:00 [received] PHST- 2006/06/06 00:00 [revised] PHST- 2006/06/15 00:00 [accepted] PHST- 2006/08/04 09:00 [pubmed] PHST- 2006/10/18 09:00 [medline] PHST- 2006/08/04 09:00 [entrez] AID - S1043-4666(06)00188-8 [pii] AID - 10.1016/j.cyto.2006.06.004 [doi] PST - ppublish SO - Cytokine. 2006 Jun;34(5-6):284-90. doi: 10.1016/j.cyto.2006.06.004. Epub 2006 Aug 1.