Objective To investigate the correlation of the polymorphism of the estrogen receptor alpha gene Pvu II site and coronary heart disease (CHD) in Chinese population. Methods Such databases as CBM, CNKI, Wangfang database, VIP, MEDLINE, The Cochrane Library, EMbase, Springer, and Ovid were searched from their establishment date to November of 2010 to collect the case-control studies on the correlation of estrogen receptor alpha gene polymorphism Pvu II sites with coronary heart disease of the Chinese. The quality of included studies was evaluated, the available data was extracted, and then the RevMan5.0 software was used for Meta analyses. Results Nine case-control studies were included, involving 1 464 cases with coronary heart disease and 1 203 cases in the control group. The results of Meta-analyses showed that, as to the correlation of the polymorphism of ER alpha gene Pvu II site T/C and CHD, there was no significant difference in the risk of CHD between people with different genotypes, i.e. the C allele versus T allele (OR=0.95, 95%CI 0.77 to 1.17, P=0.63), genotype of (TC + CC) versus TT (OR=0.97, 95%CI 0.73 to 1.28, P=0.81), genotype of TC versus TT (OR = 0.93, 95%CI 0.68 to 1.26, P=0.64), genotype of CC versus TT (OR=0.86, 95%CI 0.57 to 1.31, P=0.49). Conclusion Estrogen receptor alpha gene polymorphism Pvu II site are not associated with the coronary heart disease in Chinese population.
ObjectiveTo systematically review the risk factors in elderly patients with primary hypertension with morning blood pressure surge in China, so asto provide references for clinical treatment and prevention of complications. MethodsSuch databases as PubMed, EMbase, The Cochrane Library (Issue 11, 2013), CNKI, VIP and WanFang Data were electronically searched for the case-control studies about morning blood pressure surge (MBPS) among elderly patients with primary hypertension in China from January 2006 to June 2014 were collected. Literature was screened according to inclusion and exclusion criteria, data were extracted and the methodological quality of the included studies was assessed, and then meta-analysis was conducted using RevMan 5.2 software. ResultsA total of 16 studies involving 2 007 cases were finally included, of which 956 cases were detected with MBPS. The results of meta-analysis showed that significant differences were found in glucose levels (MD=0.42, 95%CI 0.04 to 0.81, P=0.03), urinary microalbumin levels (MD=23.85, 95%CI 6.64 to 41.07, P=0.007), incidences of cerebrovascular events (OR=1.96, 95%CI 1.25 to 3.08, P=0.004), carotid atherosclerosis (OR=5.13, 95%CI 1.70 to 15.45, P=0.004) and left ventricular hypertrophy (OR=2.49, 95%CI 1.70 to 3.64, P < 0.000 01), left ventricular mass (MD=12.89, 95%CI 3.94 to 21.84, P=0.005), and carotid artery intima-media thickness (MD=0.08, 95%CI 0.02 to 0.14, P=0.009); while no significant difference was found in gender (OR=1.12, 95%CI 0.84 to 1.49, P=0.44), total cholesterol levels (MD=0.01, 95%CI-0.11 to 0.12, P=0.92), and creatinine levels (MD=1.77, 95%CI-1.16 to 4.70, P=0.24) between patients with or without MBPS. ConclusionCurrent evidence shows that glucose levels, early kidney damage, emergent cerebrovascular events and the reconstruction of the artery and the left ventricle are risk factors of abnormal MBPS in China. However, the above conclusion needs to be verified by further conducting high quality prospective studies.
Objective To evaluate the relationship between the single nucleotide polymorphisms (SNPs) of the adiponectin gene +45 in exon 2 and type 2 diabetes mellitus (T2DM) in Chinese population via meta-analysis. Methods Databases including PubMed, Ovid, CBM, VIP, CNKI, and WanFang Data were searched from inception to June 2012, and the references of articles were also retrieved to collect case-control studies about the correlation of SNPs of the adiponectin gene +45 in exon 2 and T2DM in Chinese population. According to the self-designed inclusion and exclusion criteria, two reviewers screened articles, extracted data, and assessed the quality of the included studies independently. Then meta-analysis was performed STATA 11.0, with stability evaluated by both stratified analysis and sensitivity analysis. Moreover, Begg’s funnel plot and Egger’s method were used to assess the published bias of articles. Results 21 articles involving 22 studies were included (3272 T2DM cases and 2597 controls). There were significant differences between the two groups in dominant, recessive and addictive genetic models, and the pooled ORs (95% CI) were 1.36 (1.04, 1.78), 2.07 (1.55, 2.75), and 2.44 (1.59, 3.75), respectively. Conclusion The genetic single nucleotide polymorphisms of the adiponectin +45 in exon 2 is associated with type 2 diabetes in Chinese population. G allele of APM1 is a risk factor for type 2 diabetes, no matter in dominant, recessive or addictive genetic models.
ObjectiveTo analyze the clinical characteristics of thrombo embolism (TE) in Chinese hypertrophic cardiomyopathy (HCM) patients. MethodsThis study retrospectively analyzed HCM patients admitted to West China Hospital of Sichuan University. The endpoints were defined as a composite of TE events, including ischemic stroke, transient ischemic attack, and peripheral arterial embolization. ResultsA total of 537 HCM patients were included with a median follow-up of 4.2 years. Forty-two patients reached the TE endpoint and the incidence was 1.9%. The annual incidence of TE was approximately 1.1% and 6.6% for HCM patients without/with atrial fibrillation, respectively. The recurrence rate of TE was high (approximately 26.2%). The mean age was 66.4±13.7 years for the first TE, and the incidence of TE was significantly increased at age ≥70 years. ConclusionThe incidence of TE is high in HCM patients, especially in those with atrial fibrillation, and the recurrence rate of TE is also high.
Objective To systematically review the efficacy, safety and economic value of hybrid coronary revascularization (HCR) versus coronary artery bypass grafting (CABG) for Chinese patients with multivessel coronary artery disease. Methods We searched PubMed, WanFang Data, CNKI, Web of Science and The Cochrane Library (Issue 2, 2016) to collect case-control studies about HCR versus CABG for Chinese patients with coronary multivessel disease from the January 1996 to April 2016. Two reviewers independently screened literature, extracted data and assessed the risk of bias of included studies, then meta-analysis was performed by using RevMan 5.1 software. Results A total of 9 studies, involving 1 231 patients were included. The results of meta-analysis showed that: compared with the CABG groups, HCR group had lower length of ICU stay (MD=–25.84, 95% CI –42.55 to –9.13,P=0.002) and intubation time (MD=–4.06, 95% CI –6.43 to –1.69,P=0.000 8). However, there were no significant differences between both groups in the length of hospital stay (MD=–0.64, 95% CI –2.53 to 1.25,P=0.51), the incidence of atrial fibrillation (OR=1.41, 95% CI 0.86 to 2.30,P=0.17) and renal failure (OR=1.56, 95% CI 0.89 to 2.74,P=0.12). No significant differences were found between both groups in mortality (OR=0.36, 95% CI 0.12 to 1.11,P=0.07), the incidence of myocardial infarction (OR=0.32, 95% CI 0.06 to 1.85,P=0.20) and the incidence of target vessel revascularization (OR=1.16, 95% CI 0.48 to 2.76,P=0.74). But the incidence of the stroke (OR=0.35, 95% CI 0.14 to 0.91,P=0.03) and MACCEs (OR=0.37, 95% CI 0.20 to 0.70,P=0.002) of the HCR group were lower than those of the patients of the CABG group. Conclusion The current evidence shows that, compared with the CABG groups, HCR had lower incidence of stroke and MACCEs, however, the safety and efficacy were not significantly different between both groups. Due to the limited quantity and quality of the included studies, more high quality studies are needed to verify the above conclusion.
Objective To evaluate the association between the Thr241Met polymorphism in the XRCC3 gene and the risk of lung cancer in Chinese population by meta-analysis. Methods Databases including PubMed, EMbase, CNKI, VIP and WanFang Data were searched to identify domestic and foreign case-control studies concerning the association between Thr241Met polymorphism in XRCC3 gene and the risk of lung cancer in Chinese population from the inception to August 20th, 2013. Two reviewers independently screened the literature according to the inclusion and exclusion criteria, extracted data and assessed quality. Then meta-analysis was performed using RevMan 5.0 software and Stata 10.0 software. Results A total of 5 case-control studies involved 2 999 lung cancer cases and 2 994 controls were included. The results of meta-analysis showed that, Chinese population who carry the variant genotype or allele had no increased risk of lung cancer: Met/Met vs. Thr/Thr: OR=1.00, 95%CI (0.38, 2.59), P=0.99; Met/Met vs. Thr/Met: OR=1.06, 95%CI (0.83, 1.36), P=0.63; Met/Met vs. Thr/Met+Thr/Thr: OR=0.99, 95%CI (0.38, 2.57), P=0.98; Thr/Met+Met/Met vs. Thr/Thr: OR=1.06, 95%CI (0.82, 1.37), P=0.65; Met vs. Thr: OR=1.05, 95%CI (0.82, 1.35), P=0.68. Conclusion Currently, Thr241Met polymorphism in the XRCC3 gene is not found to be associated with the risk of lung cancer in Chinese population. Considering the limited quality of the included case-control studies, more high quality studies with large sample size are needed to verify the above conclusion.
ObjectiveTo evaluate the relationship between tumor necrosis factor-α (TNF-α) gene promoter-308 G/A polymorphism and ankylosing spondylitis (AS) in Chinese population by meta-analysis. MethodsThe casecontrol studies about the correlation between TNF-α gene polymorphism and AS in Chinese population were retrieved from PubMed, EMbase, CNKI, CBM, WanFang Data and VIP database by two researchers. The retrieval time was from their establishment to December, 2015. After the paper screening, data extraction, and assessment of bias risk, the metaanalysis was conducted by Stata 12.0 software. ResultsA total of 11 case-control studies involving 1 154 AS patients and 1 458 controls were included. The results of meta-analysis showed that, for Chinese population, there was no significant association between TNF-α-308 G/A polymorphism and AS susceptibility (A vs. G: OR=0.96, 95% CI 0.63 to 1.47, P=0.86; AA vs. AG: OR=0.97, 95% CI 0.51 to 1.84, P=0.93; AA vs. GG: OR=0.92, 95% CI 0.32 to 2.61, P=0.87; AA+AG vs. GG; OR=1.04, 95% CI 0.60 to 1.80, P=0.89; AA vs. AG+GG: OR=1.03, 95% CI 0.58 to 1.82, P=0.92). ConclusionTo date, it has not found the relationship between TNF-α gene promoter-308 G/A polymorphism and AS in Chinese population. For the quantity and quality limitation of the included studies, the conclusion has to be verified by more large-scale highquality studies.
Objective To summarize results of the correlation of tumor necrosis factor-α (TNF-α) promoter –308A/G polymorphism with systemic lupus erythematosus (SLE) susceptibility in Chinese populations. Methods We collected all the publications about the correlation between TNF-α promoter –308A/G polymorphism and SLE in Chinese populations by searching PubMed, EBSCO, CBM, CNKI and Wanfang Data before the date of March 20, 2010. Meta-analysis was performed for checking the difference between two groups about genotypes such as AA versus GG, GA versus GG, AA versus GG+GA, GA+AA versus GG, and A allele versus G allele. Results A total of 8 studies involving 731 SLE patients and 901 healthy people were included. The meta-analysis of total populations showed that, there was no significant correlation between A allele and increased SLE risk (OR=1.42, 95%CI 0.97 to 2.09, P=0.07); the meta-analyses of populations in different regions showed there was no significant correlation of A allele and increased SLE risk in Chinese Taiwan populations (OR=1.04, 95%CI 0.77 to 1.40, P=0.82). Moreover, there was no significant difference between SLE group and control group in the genotypes of AA versus GG, GA versus GG, AA versus GG+GA, and GA+AA versus GG.Conclusion This meta-analysis dosen’t demonstrate the correlation between TNF-α promoter–308A/G polymorphism and SLE in Chinese populations.
Objective To clarify the correlation of p53 codon 72 polymorphism in peripheral blood with keloid susceptibility in Chinese population. Methods All the literatures of case-control research on the correlation between p53 codon 72 polymorphism in peripheral blood and keloid in Chinese population were searched in PubMed, EBSCO, CNKI, CBM, and WanFang Data from their establishment to August 2010. Meta-analyses were performed to detect whether there were differences between the keloid group and the control group about the distribution of genotypes of p53 codon 72 in peripheral blood, such as, Pro/Pro vs. Arg/Arg, Pro/Pro vs. Pro/Arg, and alleles Pro vs. Arg. Results Five studies involving 328 keloid patients and 420 patients in the control group were included. The results of meta-analyses showed that the population having the genotype Pro/Pro presented no increased keloid risk compared to that with the genotypes Arg/Arg (OR=2.17, 95%CI 0.86 to 5.47) or Pro/Arg (OR=1.90, 95%CI 0.92 to 3.93), while the allele Pro showed significant association with increased keloid risk compared to the allele Arg (OR=1.86, 95%CI 1.03 to 3.35). Conclusion The allele Pro of p53 codon 72 in peripheral blood of Chinese population is significantly associated with increased keloid risk.
Objective To systematically evaluate the correlation between type 2 diabetes mellitus (T2DM) in Chinese population and K121Q polymorphism in exon-4 of plasma cell glycoprotrin-1 (PC-1) gene. Methods The following databases such as CNKI, VIP, CBM, PubMed, EMbase, The Cochrane Library (Issue 3, 2012) and WanFang Data were searched to collect case-control studies on the correlation between T2DM and K121Q polymorphism in exon-4 of PC-1 gene. The retrieval time was from 1980 to 2012. Two reviewers independently screened the literature according to the inclusion and exclusion criteria, extracted the data and assessed the quality. Then the meta-analysis was conducted by using RevMan 5.0 and Stata 12.0 software, and the publication bias was analyzed by means of Egger’s linear regression. Results A total of 11 studies involving 1 637 T2DM patients and 1 730 healthy volunteers were included. The results of meta-analyses showed that, for Chinese population, the risk of T2DM was higher in those with K/Q genotype than K/K genotype (OR=1.84, 95%CI 1.19 to 2.85, P=0.006), in Q/Q+K/Q genotype than K/K genotype (OR=1.92, 95%CI 1.18 to 3.14, P=0.009), and also in allele Q than allele K (OR=1.83, 95%CI 1.16 to 2.89, P=0.010). Conclusion The K121Q polymorphism in exon-4 of PC-1 gene in Chinese population is significantly associated with T2DM. For the quantity and quality limitation of the included studies, this conclusion has to be further proved by more studies.