PMID- 19144177 OWN - NLM STAT- MEDLINE DCOM- 20090505 LR - 20240416 IS - 1471-230X (Electronic) IS - 1471-230X (Linking) VI - 9 DP - 2009 Jan 14 TI - Paraoxonase-1 is related to inflammation, fibrosis and PPAR delta in experimental liver disease. PG - 3 LID - 10.1186/1471-230X-9-3 [doi] AB - BACKGROUND: Paraoxonase-1 (PON1) is an antioxidant enzyme synthesized by the liver. It protects against liver impairment and attenuates the production of the pro-inflammatory monocyte chemoattractant protein-1 (MCP-1). We investigated the relationships between hepatic PON1 and MCP-1 expression in rats with liver disease and explored the possible molecular mechanisms involved. METHODS: CCl4 was administered for up to 12 weeks to induce liver damage. Serum and hepatic levels of PON1 and MCP-1, their gene and protein expression, nuclear transcription factors, and histological and biochemical markers of liver impairment were measured. RESULTS: High levels of PON1 and MCP-1 expression were observed at 12th week in the hepatocytes surrounding the fibrous septa and inflammatory areas. CCl4-administered rats had an increased hepatic PON1 concentration that was related to decreased gene transcription and inhibited protein degradation. Decreased PON1 gene transcription was associated with PPARdelta expression. These changes were accompanied by increased hepatic MCP-1 concentration and gene expression. There were significant direct relationships between hepatic PON1 and MCP-1 concentrations (P = 0.005) and between PON1 and the amount of activated stellate cells (P = 0.001). CONCLUSION: Our results from this experimental model suggest a hepato-protective role for PON1 against inflammation, fibrosis and liver disease mediated by MCP-1. FAU - Marsillach, Judit AU - Marsillach J AD - Centre de Recerca Biomedica, Hospital Universitari de Sant Joan, Institut d'Investigacions Sanitaries Pere Virgili, Universitat Rovira i Virgili, C, Sant Joan s/n, 43201 Reus, Spain. jmarsillach@grupsagessa.cat FAU - Camps, Jordi AU - Camps J FAU - Ferre, Natalia AU - Ferre N FAU - Beltran, Raul AU - Beltran R FAU - Rull, Anna AU - Rull A FAU - Mackness, Bharti AU - Mackness B FAU - Mackness, Michael AU - Mackness M FAU - Joven, Jorge AU - Joven J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090114 PL - England TA - BMC Gastroenterol JT - BMC gastroenterology JID - 100968547 RN - 0 (Ccl2 protein, rat) RN - 0 (Chemokine CCL2) RN - 0 (Free Radicals) RN - 0 (PPAR delta) RN - CL2T97X0V0 (Carbon Tetrachloride) RN - EC 3.1.8.1 (Aryldialkylphosphatase) SB - IM MH - Animals MH - Aryldialkylphosphatase/*physiology MH - Carbon Tetrachloride MH - Chemical and Drug Induced Liver Injury/etiology/*metabolism/*pathology MH - Chemokine CCL2/physiology MH - Free Radicals/metabolism MH - Liver Cirrhosis, Experimental/etiology/*metabolism/*pathology MH - Male MH - PPAR delta/*metabolism MH - Rats MH - Rats, Wistar PMC - PMC2632645 EDAT- 2009/01/16 09:00 MHDA- 2009/05/06 09:00 PMCR- 2009/01/14 CRDT- 2009/01/16 09:00 PHST- 2008/08/28 00:00 [received] PHST- 2009/01/14 00:00 [accepted] PHST- 2009/01/16 09:00 [entrez] PHST- 2009/01/16 09:00 [pubmed] PHST- 2009/05/06 09:00 [medline] PHST- 2009/01/14 00:00 [pmc-release] AID - 1471-230X-9-3 [pii] AID - 10.1186/1471-230X-9-3 [doi] PST - epublish SO - BMC Gastroenterol. 2009 Jan 14;9:3. doi: 10.1186/1471-230X-9-3.