PMID- 17868882 OWN - NLM STAT- MEDLINE DCOM- 20071025 LR - 20131121 IS - 1054-8807 (Print) IS - 1054-8807 (Linking) VI - 16 IP - 5 DP - 2007 Sep-Oct TI - Folic acid reduces chemokine MCP-1 release and expression in rats with hyperhomocystinemia. PG - 305-9 AB - OBJECTIVE: This study aimed to investigate the effects of folate on the monocyte chemoattractant protein-1 (MCP-1) expression and release in rats with hyperhomocystinemia induced by ingestion of excess methionine. METHODS AND RESULTS: Thirty male Sprague-Dawley rats (200+/-20 g) were randomly divided into three groups (n=10 for each group): control group (Control), high-homocystinemia (Hhcy) group, and folate treatment (FA) group. They were fed with a normal regular diet, enriched by 1.7% methionine plus 1.7% methionine and 0.006% folate for 45 days. Our study showed the following: (a) A high methionine diet for 45 days is sufficient to induce hyperhomocystinemia; folate supplementation to the rats fed the high-methionine diet prevented an elevation homocysteine (Hcy) levels in the blood (P<.01). (b) Compared with the Control group, the Hhcy group had elevated plasma levels of MCP-1, and Hcy was significantly correlated with MCP-1 (P<.05). (c) The protein and mRNA expression of MCP-1 in the aorta was higher in rats from the Hhcy group than in rats from the Control group. (d) Most important, after folic acid supplementation, the lowering of Hcy levels was accompanied by a marked reduction of MCP-1 expressed in aortae and released from plasma and peripheral blood mononuclear cells (PBMCs) stimulated by oxidized low-density lipoprotein (P<.05, P<.01). CONCLUSION: Folic acid supplementation not only can blunt the rise in Hcy and reduce MCP-1 released from both plasma and PBMCs of rats with hyperhomocystinemia but also can downgrade MCP-1 expression in the aorta of rats with hyperhomocystinemia. FAU - Li, Ming AU - Li M AD - Institute of Cardiovasology, Union Hospital, Tongii Medical College, Huazhong Science and Technology University, Hubei, China. liming518888cn@yahoo.com.cn FAU - Chen, Jian AU - Chen J FAU - Li, Yu-Shu AU - Li YS FAU - Feng, Yi-Bai AU - Feng YB FAU - Zeng, Qiu-Tang AU - Zeng QT LA - eng PT - Journal Article DEP - 20070511 PL - United States TA - Cardiovasc Pathol JT - Cardiovascular pathology : the official journal of the Society for Cardiovascular Pathology JID - 9212060 RN - 0 (Ccl2 protein, rat) RN - 0 (Chemokine CCL2) RN - 0 (Lipoproteins, LDL) RN - 0 (RNA, Messenger) RN - 0 (oxidized low density lipoprotein) RN - 0LVT1QZ0BA (Homocysteine) RN - 12001-76-2 (Vitamin B Complex) RN - 935E97BOY8 (Folic Acid) RN - AE28F7PNPL (Methionine) SB - IM MH - Animals MH - Aorta/*drug effects/metabolism MH - Blotting, Western MH - Cells, Cultured MH - Chemokine CCL2/blood/genetics/*metabolism MH - Disease Models, Animal MH - Folic Acid/*pharmacology/therapeutic use MH - Homocysteine/blood MH - Hyperhomocysteinemia/chemically induced/metabolism/*prevention & control MH - Immunohistochemistry MH - Leukocytes, Mononuclear/drug effects/*metabolism MH - Lipoproteins, LDL/metabolism MH - Male MH - Methionine MH - RNA, Messenger/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Reverse Transcriptase Polymerase Chain Reaction MH - Time Factors MH - Vitamin B Complex/*pharmacology/therapeutic use EDAT- 2007/09/18 09:00 MHDA- 2007/10/27 09:00 CRDT- 2007/09/18 09:00 PHST- 2006/10/31 00:00 [received] PHST- 2007/02/28 00:00 [revised] PHST- 2007/03/13 00:00 [accepted] PHST- 2007/09/18 09:00 [pubmed] PHST- 2007/10/27 09:00 [medline] PHST- 2007/09/18 09:00 [entrez] AID - S1054-8807(07)00051-8 [pii] AID - 10.1016/j.carpath.2007.03.005 [doi] PST - ppublish SO - Cardiovasc Pathol. 2007 Sep-Oct;16(5):305-9. doi: 10.1016/j.carpath.2007.03.005. Epub 2007 May 11.