PMID- 16166554 OWN - NLM STAT- MEDLINE DCOM- 20051207 LR - 20131121 IS - 1524-4571 (Electronic) IS - 0009-7330 (Linking) VI - 97 IP - 9 DP - 2005 Oct 28 TI - Protective effect of alpha-lipoic acid in lipopolysaccharide-induced endothelial fractalkine expression. PG - 880-90 AB - Fractalkine is a unique chemokine that functions as a chemoattractant as well as an adhesion molecule on endothelial cells activated by proinflammatory cytokines. Alpha-lipoic acid (LA), a naturally occurring dithiol compound, is an essential cofactor for mitochondrial bioenergetic enzymes. LA improves glycemic control, reduces diabetic polyneuropathies, and mitigates toxicity associated with heavy metal poisoning. The effects of LA on processes associated with sepsis, however, are unknown. We evaluated the antiinflammatory effect of LA on fractalkine expression in a lipopolysaccharide-induced endotoxemia model. Tumor necrosis factor-alpha (TNF-alpha) and interleukin-1beta (IL-1beta) significantly induced fractalkine mRNA and protein expression in endothelial cells. LA strongly suppressed TNF-alpha- or IL-1beta-induced fractalkine expression in endothelial cells by suppressing the activities of nuclear factor-kappaB and specificity protein-1. LA also decreased TNF-alpha- or IL-1beta-stimulated monocyte adhesion to human umbilical vein endothelial cells. As shown by immunohistochemistry, fractalkine protein expression was markedly increased by treatment with lipopolysaccharide in arterial endothelial cells, endocardium, and endothelium of intestinal villi. LA suppressed lipopolysaccharide-induced fractalkine protein expression and infiltration of endothelin 1-positive cells into the heart and intestine in vivo. LA protected against lipopolysaccharide-induced myocardial dysfunction and improved survival in lipopolysaccharide-induced endotoxemia. These results suggest that LA could be an effective agent to reduce fractalkine-mediated inflammatory processes in endotoxemia. FAU - Sung, Mi Jeong AU - Sung MJ AD - Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, 560-180, Korea. FAU - Kim, Won AU - Kim W FAU - Ahn, So Young AU - Ahn SY FAU - Cho, Chung-Hyun AU - Cho CH FAU - Koh, Gou Young AU - Koh GY FAU - Moon, Sang-Ok AU - Moon SO FAU - Kim, Duk Hoon AU - Kim DH FAU - Lee, Sik AU - Lee S FAU - Kang, Kyung Pyo AU - Kang KP FAU - Jang, Kyu Yun AU - Jang KY FAU - Park, Sung Kwang AU - Park SK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20050915 PL - United States TA - Circ Res JT - Circulation research JID - 0047103 RN - 0 (CX3CL1 protein, human) RN - 0 (Chemokine CX3CL1) RN - 0 (Chemokines, CX3C) RN - 0 (Cx3cl1 protein, rat) RN - 0 (EDA protein, human) RN - 0 (Ectodysplasins) RN - 0 (Interleukin-1) RN - 0 (Lipopolysaccharides) RN - 0 (Membrane Proteins) RN - 0 (NF-kappa B) RN - 0 (RNA, Messenger) RN - 0 (Sp1 Transcription Factor) RN - 0 (Tumor Necrosis Factor-alpha) RN - 73Y7P0K73Y (Thioctic Acid) SB - IM MH - Animals MH - Blood Pressure/drug effects MH - Cell Adhesion/drug effects MH - Cells, Cultured MH - Chemokine CX3CL1 MH - Chemokines, CX3C/*genetics MH - Ectodysplasins MH - Endothelial Cells/*metabolism MH - Endotoxemia/drug therapy MH - Humans MH - Interleukin-1/pharmacology MH - Lipopolysaccharides/*toxicity MH - Male MH - Membrane Proteins/analysis/*genetics MH - Monocytes/drug effects MH - Myocardium/pathology MH - NF-kappa B/metabolism MH - RNA, Messenger/analysis MH - Rats MH - Rats, Sprague-Dawley MH - Sp1 Transcription Factor/metabolism MH - Thioctic Acid/*pharmacology MH - Tumor Necrosis Factor-alpha/pharmacology EDAT- 2005/09/17 09:00 MHDA- 2005/12/13 09:00 CRDT- 2005/09/17 09:00 PHST- 2005/09/17 09:00 [pubmed] PHST- 2005/12/13 09:00 [medline] PHST- 2005/09/17 09:00 [entrez] AID - 01.RES.0000186522.89544.4D [pii] AID - 10.1161/01.RES.0000186522.89544.4D [doi] PST - ppublish SO - Circ Res. 2005 Oct 28;97(9):880-90. doi: 10.1161/01.RES.0000186522.89544.4D. Epub 2005 Sep 15.