PMID- 21975431 OWN - NLM STAT- MEDLINE DCOM- 20121207 LR - 20221207 IS - 1720-8386 (Electronic) IS - 0391-4097 (Linking) VI - 35 IP - 6 DP - 2012 Jun TI - Methylation status of CpG sites in the MCP-1 promoter is correlated to serum MCP-1 in Type 2 diabetes. PG - 585-9 LID - 10.3275/7981 [doi] AB - AIM: Monocyte chemoattractant protein-1 (MCP-1) is a potent chemokine and plays an important role in atherosclerosis of Type 2 diabetes. The aim of this study was to investigate the methylation status of CpG sites in the MCP-1 promoter in Type 2 diabetic patients and its correlation to serum MCP- 1 level, and blood glucose level. METHODS: The 32 patients with Type 2 diabetes and 15 healthy controls were enrolled into the study. Bodymass index, blood pressure, blood lipid, blood glucose, glycosylated hemoglobin (HbA1c), and serum MCP-1 were measured. Genomic DNA was isolated fromthe peripheral blood mononuclear cells (PBMC). Methylation status of CpG sites in theMCP-1 promoter was determined using methylation specific polymerase chain reaction. RESULTS: The promoter region (2890-3050 bp) was predominantly methylated in PBMC from controls.Methylation of CpGmotifs were less methylated in the patients than in the controls (25% vs 80%; p<0.001), while the level of MCP-1 in serum was higher in patients with Type 2 diabetes (193.95+/-74.96 vs 88.46+/-55.10; p<0.001). MCP-1 promoter methylation was significantly correlated to serum MCP-1, HbA1c, fasting blood glucose, and triglyceride. CONCLUSION: These data suggest that hypomethylation of CpG sites in the MCP-1 promoter region may be affected by blood glucose and TG, which then increase the serum MCP-1 level and may play a role in the vascular complications of Type 2 diabetes. FAU - Liu, Z H AU - Liu ZH AD - Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Avenue Jiefang 1277#, Wuhan, Hubei, PR China. FAU - Chen, L L AU - Chen LL FAU - Deng, X L AU - Deng XL FAU - Song, H J AU - Song HJ FAU - Liao, Y F AU - Liao YF FAU - Zeng, T S AU - Zeng TS FAU - Zheng, J AU - Zheng J FAU - Li, H Q AU - Li HQ LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20111003 PL - Italy TA - J Endocrinol Invest JT - Journal of endocrinological investigation JID - 7806594 RN - 0 (Blood Glucose) RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Glycated Hemoglobin A) RN - 0 (Triglycerides) SB - IM MH - Adult MH - Aged MH - Atherosclerosis/*etiology/pathology MH - Blood Glucose/metabolism MH - Body Mass Index MH - Case-Control Studies MH - Chemokine CCL2/*blood/*genetics MH - CpG Islands/*genetics MH - *DNA Methylation MH - Diabetes Complications/etiology/pathology MH - Diabetes Mellitus, Type 2/*blood MH - Female MH - Glycated Hemoglobin/metabolism MH - Humans MH - Leukocytes, Mononuclear/metabolism MH - Male MH - Middle Aged MH - Polymerase Chain Reaction MH - Promoter Regions, Genetic/*genetics MH - Triglycerides/metabolism EDAT- 2011/10/07 06:00 MHDA- 2012/12/12 06:00 CRDT- 2011/10/07 06:00 PHST- 2011/10/07 06:00 [entrez] PHST- 2011/10/07 06:00 [pubmed] PHST- 2012/12/12 06:00 [medline] AID - 7981 [pii] AID - 10.3275/7981 [doi] PST - ppublish SO - J Endocrinol Invest. 2012 Jun;35(6):585-9. doi: 10.3275/7981. Epub 2011 Oct 3.