PMID- 24809310 OWN - NLM STAT- MEDLINE DCOM- 20150511 LR - 20221207 IS - 1435-702X (Electronic) IS - 0721-832X (Linking) VI - 252 IP - 12 DP - 2014 Dec TI - Association of monocyte chemoattractant protein-1 (MCP-1)2518A/G polymorphism with proliferative diabetic retinopathy in northern Chinese type 2 diabetes. PG - 1921-6 LID - 10.1007/s00417-014-2651-1 [doi] AB - BACKGROUND: The pathogenesis of proliferative diabetic retinopathy (PDR) remains poorly understood. Recent studies have implicated that monocyte chemoattractant protein-1 (MCP-1) is associated with diabetic microvascular or macrovascular complications. However, the relationship between single nucleotide polymorphism(SNP)c.2518A/G -rs1024611 in the MCP-1 gene with diabetic retinopathy remains controversial. In the present study, we evaluated the association of SNP in the MCP-1 gene with diabetic retinopathy (DR) and diabetic macular edema (DME) in a Chinese population from Northern China with type 2 diabetes. METHODS: We conducted a case-control study, which enrolled 1,043 subjects with type 2 diabetes (528 with DR, including 277PDR; 515 without DR), and SNP genotyping of c.2518A/G in the MCP-1 gene was performed using the polymerase chain reaction. Genomic DNA was isolated from 3 ml samples of whole blood using a modified conventional DNA extraction method. The genotype and allele frequencies of 2518A/G were studied by using an automated DNA sequencer (ABI PRISM 3730 DNA Sequencer). RESULTS: The demographic and clinical characteristics did not differ among genotype subgroups. The MCP-1(-2518) GG genotype was significantly associated with DR susceptibility with OR of 1.481 (95 % CI, 1.019-2.153) (P = 0.046). There were no significant differences in the MCP-1(-2518) G allele frequencies in DR compared to non-diabetic retinopathy (DNR) (P > 0.05, OR = 0.841, 95 % CI, 0.705-1.002). The MCP-1(-2518) GG genotype was significantly associated with high-risk PDR susceptibility with OR of 2.656 (95 % CI, 1.222-5.775) (P = 0.014). The MCP-1(-2518) G allele was significantly increased in high-risk PDR patients (P = 0.020, OR = 1.481, 95 % CI, 1.070-2.051) compared with A allele. Genotype and allele frequencies of various DME of the DR patients were compared, but there were no significant associations established (P > 0.05). CONCLUSIONS: It is likely that the MCP-1 c.2518G/G genotype is a susceptibility gene for DR in Chinese type 2 diabetic patients, especially the high-risk PDR. There is no association with DME and c.2518G/G. FAU - Dong, Li AU - Dong L AD - Key Laboratory of Harbin Medical University Eye Center, Eye Hospital, First Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin, 150001, Heilongjiang Province, People's Republic of China. FAU - Lv, Xiao Ying AU - Lv XY FAU - Wang, Bin Jie AU - Wang BJ FAU - Wang, Ye Qing AU - Wang YQ FAU - Mu, Hua AU - Mu H FAU - Feng, Zhuo Lei AU - Feng ZL FAU - Liu, Ping AU - Liu P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140509 PL - Germany TA - Graefes Arch Clin Exp Ophthalmol JT - Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie JID - 8205248 RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) SB - IM MH - Adult MH - Aged MH - Asian People/*genetics MH - Case-Control Studies MH - Chemokine CCL2/*genetics MH - China/epidemiology MH - Diabetes Mellitus, Type 2/*genetics MH - Diabetic Retinopathy/diagnosis/*genetics MH - Female MH - Gene Frequency MH - Genetic Predisposition to Disease MH - Genotyping Techniques MH - Humans MH - Macular Edema/diagnosis/*genetics MH - Male MH - Middle Aged MH - Polymerase Chain Reaction MH - *Polymorphism, Single Nucleotide EDAT- 2014/05/09 06:00 MHDA- 2015/05/12 06:00 CRDT- 2014/05/10 06:00 PHST- 2013/06/20 00:00 [received] PHST- 2014/04/14 00:00 [accepted] PHST- 2014/04/09 00:00 [revised] PHST- 2014/05/10 06:00 [entrez] PHST- 2014/05/09 06:00 [pubmed] PHST- 2015/05/12 06:00 [medline] AID - 10.1007/s00417-014-2651-1 [doi] PST - ppublish SO - Graefes Arch Clin Exp Ophthalmol. 2014 Dec;252(12):1921-6. doi: 10.1007/s00417-014-2651-1. Epub 2014 May 9.