PMID- 20643106 OWN - NLM STAT- MEDLINE DCOM- 20100902 LR - 20100816 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 399 IP - 1 DP - 2010 Aug 13 TI - Dietary restriction suppresses inflammation and delays the onset of stroke in stroke-prone spontaneously hypertensive rats. PG - 98-103 LID - 10.1016/j.bbrc.2010.07.048 [doi] AB - Subjects with high blood levels of inflammatory markers and patients with chronic inflammatory disorders are at high risk for stroke. Dietary restriction (DR) suppresses systemic inflammation to deter age-related chronic diseases. To examine whether DR delays the onset of stroke, 10-week-old stroke-prone spontaneously hypertensive rats (SHRSP) were assigned to either a control (ad libitum) or DR (50% diet of control) group, and day of stroke onset and lifespan were observed. DR markedly delayed the onset of stroke in SHRSP compared to control without affecting blood pressure. Day of stroke onset (median) in the control group was 34days, whereas it was 70days in the DR group. After 2weeks of DR and before the onset of stroke, plasma levels of interleukin-1beta (IL-1beta), tumor necrosis factor-alpha (TNF-alpha), and monocyte chemoattractant protein-1 (MCP-1) and their mRNA expression levels in adipose tissue were significantly lower in the DR rats than in the control rats. Intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) mRNA expression levels in cerebrovascular endothelial cells (CVECs), and macrophage infiltration into brain were lower in the DR rats than in the control rats. IL-1beta and TNF-alpha treatment in CVECs increased MCP-1, C-reactive protein, ICAM-1, and VCAM-1 mRNA and their protein levels in vitro. In conclusion, suppression of inflammation in response to DR may lead to a delay in the onset of stroke independent of any effect on blood pressure in SHRSP. CI - 2010 Elsevier Inc. All rights reserved. FAU - Chiba, Tsuyoshi AU - Chiba T AD - National Institute of Health and Nutrition, Shinjuku-ku, Tokyo, Japan. tyschiba@nih.go.jp FAU - Ezaki, Osamu AU - Ezaki O LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100717 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Interleukin-1beta) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (Vascular Cell Adhesion Molecule-1) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) SB - IM MH - Adipose Tissue/*metabolism MH - Animals MH - Blood Pressure MH - Chemokine CCL2/metabolism MH - *Diet MH - Inflammation/*diet therapy/metabolism MH - Intercellular Adhesion Molecule-1/metabolism MH - Interleukin-1beta/metabolism MH - Male MH - Rats MH - Rats, Inbred SHR MH - Stroke/*prevention & control MH - Tumor Necrosis Factor-alpha/metabolism MH - Vascular Cell Adhesion Molecule-1/metabolism EDAT- 2010/07/21 06:00 MHDA- 2010/09/03 06:00 CRDT- 2010/07/21 06:00 PHST- 2010/07/06 00:00 [received] PHST- 2010/07/14 00:00 [accepted] PHST- 2010/07/21 06:00 [entrez] PHST- 2010/07/21 06:00 [pubmed] PHST- 2010/09/03 06:00 [medline] AID - S0006-291X(10)01359-8 [pii] AID - 10.1016/j.bbrc.2010.07.048 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2010 Aug 13;399(1):98-103. doi: 10.1016/j.bbrc.2010.07.048. Epub 2010 Jul 17.