PMID- 16962071 OWN - NLM STAT- MEDLINE DCOM- 20061107 LR - 20071114 IS - 0006-291X (Print) IS - 0006-291X (Linking) VI - 349 IP - 3 DP - 2006 Oct 27 TI - Inhibition of inflammatory response in transgenic fat-1 mice on a calorie-restricted diet. PG - 925-30 AB - Both n-3 fatty acids (n-3 FA) and calorie-restriction (CR) exert anti-inflammatory effects in animal models of autoimmunity and inflammation. In the present study we investigated the synergistic anti-inflammatory effects of n-3 FA and CR on LPS-mediated inflammatory responses using fat-1 transgenic mice that generate n-3 FA endogenously. Wild-type (WT) and fat-1 mice were maintained on ad libitum (AL) or CR (40% less than AL) diet for 5 mo; splenocytes were cultured in vitro with/without LPS. Our results show: (i) no difference in body weights between WT and fat-1 mice on AL or CR diets, (ii) lower n-6/n-3 FA ratio in splenocytes from fat-1 mice on both AL and CR diets, (iii) significant reduction in NF-kappaB (p65/p50) and AP-1 (c-Fos/c-Jun) DNA-binding activities in splenocytes from fat-1/CR mice following LPS treatment, and (iv) significant reduction in kappaB- and AP-1-responsive IL-6 and TNF-alpha secretion following LPS treatment in splenocytes from fat-1/CR mice. The inhibition of LPS-mediated effects was more pronounced in fat-1/CR mice when compared to fat-1/AL or WT/CR mice. These data show that transgenic expression of fat-1 results in decreased pro-inflammatory n-6 FA, and demonstrate for the first time that splenocytes from fat-1 mice on CR diet exhibit reduced pro-inflammatory response when challenged with LPS. These results suggest that n-3 lipids with moderate CR may confer protection in autoimmune and inflammatory diseases. FAU - Bhattacharya, Arunabh AU - Bhattacharya A AD - Department of Medicine, Division of Clinical Immunology and Rheumatology, University of Texas Health Science Center, San Antonio, TX 78229, USA. FAU - Chandrasekar, Bysani AU - Chandrasekar B FAU - Rahman, Md Mizanur AU - Rahman MM FAU - Banu, Jameela AU - Banu J FAU - Kang, Jing X AU - Kang JX FAU - Fernandes, Gabriel AU - Fernandes G LA - eng GR - AG023648/AG/NIA NIH HHS/United States GR - AG027562/AG/NIA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20060824 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Cytokines) RN - 0 (Fatty Acids) RN - 0 (Lipopolysaccharides) RN - 0 (NF-kappa B) RN - 0 (Transcription Factor AP-1) SB - IM MH - Animals MH - Body Weight MH - *Caloric Restriction MH - Cells, Cultured MH - Cytokines/metabolism MH - Fatty Acids/metabolism MH - Inflammation/chemically induced/diet therapy/genetics/*metabolism MH - Lipopolysaccharides/pharmacology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Mutant Strains MH - Mice, Transgenic MH - NF-kappa B/metabolism MH - Phenotype MH - Spleen/drug effects/metabolism MH - Transcription Factor AP-1/metabolism EDAT- 2006/09/12 09:00 MHDA- 2006/11/09 09:00 CRDT- 2006/09/12 09:00 PHST- 2006/08/03 00:00 [received] PHST- 2006/08/17 00:00 [accepted] PHST- 2006/09/12 09:00 [pubmed] PHST- 2006/11/09 09:00 [medline] PHST- 2006/09/12 09:00 [entrez] AID - S0006-291X(06)01913-9 [pii] AID - 10.1016/j.bbrc.2006.08.093 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2006 Oct 27;349(3):925-30. doi: 10.1016/j.bbrc.2006.08.093. Epub 2006 Aug 24.