血清尿酸水平与原发性高血压患者颈动脉狭窄严重程度关系的研究

目的 研究血清尿酸(uric acid,UA)水平与原发性高血压(essential hypertension,EH)患者颈动脉狭窄严重程度之间的关系.方法 随机选择EH患者1 12例,行血液生化检测及双侧颈动脉彩超检查;依据血压不同进行分级,即1级组、2级组、3级组,依据颈动脉彩超结果分为4组,即内膜正常组、内膜增厚组、斑块形成组、管腔狭窄组,进行比较.结果 各级EH患者血清UA值分别为(315.89±60.77)、(354.36±66.00)、(438.84±78.52)μmol/L,不同血压级别组间比较,差异有统计学意义(P＜0.05);不同超声结果4组间血清UA值分别为(297.71±54.28)、(353.61±70.07)、(400.43±82.22)、(469.32±85.11)μmol/L,不同内膜组间比较,差异有统计学意义(P＜0.05).结论 血清UA水平增高是EH发病的危险因素之一,血清UA水平是EH颈动脉狭窄严重程度的独立预测因子,EH颈动脉狭窄严重程度与血清UA水平呈正相关.     

血清尿酸水平与X综合征患者卒中的相关研究

目的：探讨X综合征患者血清尿酸水平与卒中的关系。方法：对按性别、年龄、糖尿病病程和血HbAlc水平配对的20例有卒中史20例无卒中史的有X综合征的NIDDM病人、20例单纯NIDDM病人和20例正常人测定其血清尿酸水平并进行分析研究。结果：单纯NIDDM病人的血清尿酸水平显著低于正常对照组（P＜0.05），其水平与血糖呈负相关；而有X综合征的病人血清尿酸水平显著高于无卒中史者（P＜0.05）。同时血清尿酸水平与血清胰岛素及C肽水平之间存在相关。结论：血清尿水平可能是X综合征患者卒中发病率的一个危险因子。     

中青年人群非酒精性脂肪肝发生风险预测模型的建立

目的建立非酒精性脂肪肝(NAFLD)的发生风险预测模型,为NAFLD的预防及发生提供管理策略。方法选取2015年1月至2018年7月大连医科大学附属第二医院健康管理中心年度体检数据库中18~59岁、至少有2次连续体检记录、基线未发生NAFLD且无重要指标缺失者的数据,观察结局为NAFLD。收集基本信息、体格检查、实验室检查和腹部超声检查资料,将所有研究对象随机分为建模组和验证组。采用SPSS 23.0进行χ²检验、t检验、秩和检验、单因素Cox回归分析。利用建模组资料进行多因素Cox回归分析选取预测指标,用RStudio软件绘制线图,构建NAFLD发生风险预测模型。通过一致性指数(C指数)和校正曲线对建模组和验证组模型的预测效果进行验证。结果本研究共纳入2377名研究对象,其中建模组1585人,验证组792人。本研究共有467人发生NAFLD(累积发病率为19.6%),平均随访时间为(27.06±8.02)个月。其中,建模组NAFLD发病人数为310人(发病率为19.6%),验证组NAFLD发病人数为157人(累积发病率为19.8%)。多因素Cox回归分析结果显示,高密度脂蛋白胆固醇水平(HR=0.334,95%CI:0.209~0.534)为NAFLD发病的独立保护因素,而体质指数(HR=1.220,95%CI:1.172~1.271)、甘油三酯(HR=1.114,95%CI:1.052~1.180)、低密度脂蛋白胆固醇(HR=1.252,95%CI:1.054~1.487)、丙氨酸氨基转移酶(HR=1.013,95%CI:1.005~1.021)、血尿酸(HR=1.003,95%CI:1.001~1.004)为NAFLD发病的独立危险因素(P<0.05,P<0.01)。利用上述影响因素成功构建NAFLD发生风险预测模型。建模组和验证组的C指数分别为0.789(95%CI:0.766~0.812)、0.777(95%CI:0.742~0.812),校正曲线显示模型预测结果与实际观察结果吻合良好。结论本研究构建的NAFLD发生风险预测模型可以准确地预测NAFLD的发生概率,为早期识别NAFLD高危人群提供新思路。     

Individual and combined relationship of serum uric acid and alanine aminotransferase on metabolic syndrome in adults in Qingdao,China

Background and aimsAssociations of alanine aminotransferase (ALT) and serum uric acid (SUA) with metabolic syndrome (MetS) remain controversial. We aimed to explore individual and combined effects of ALT and SUA on MetS in community residents.Methods and resultsA population-based cross-sectional survey involving randomly selected Chinese adults aged 35–74 years was conducted in 2009 in Qingdao, China, and 4642 participants were included in the current study. Based on a combination of SUA and ALT levels in the tertile, subjects were grouped into Group 1-9. The individual and combined relations of SUA and ALT to MetS were analyzed by logistic regression models. The prevalence of MetS was 28.50% in males and 22.30% in females. ALT and SUA were independently associated with MetS and ORs (95% CIs) were 1.55 (1.42–1.70) and 1.92 (1.72–2.14), respectively, after adjusting for potential confounders. With the elevation of ALT and SUA levels, the risk of developing MetS increased. Compared to Group 1, ORs (95% CIs) of combined ALT and SUA for MetS were 2.21 (1.70–2.88), 4.02 (3.10–5.21), 2.19 (1.62–2.97), 2.53 (1.91–3.34), 4.69 (3.60–6.12), 1.76 (1.17–2.64), 3.65 (2.63–5.06) and 7.15 (5.41–9.46) in Group 2–9, respectively.ConclusionsALT and SUA were both related to MetS independently. Combined elevation of ALT and SUA levels could increase the risk of MetS and its components than an elevation in SUA and ALT alone. Therefore, measures should be taken to lower SUA and ALT levels to reduce the risk of having MetS.     

Serum uric acid in patients with ST-segment elevation myocardial infarction: An innocent bystander or leading actor?

Elevated serum uric acid (SUA) levels have been associated with several cardiovascular risk factors and the progression of coronary artery disease. In the setting of acute myocardial infarction, increasing evidence suggests that high SUA levels could be related to adverse outcomes. Interestingly elevated SUA levels have been linked to endothelial dysfunction, inflammation and oxidative stress. The aim of this review is to discuss the potential negative effects of SUA in patients with ST-segment elevation myocardial infarction undergoing primary percutaneous coronary intervention, analyzing the possible underlying pathophysiological mechanisms.     

Impact of serum uric acid on subclinical myocardial injury in general population

Background and aimsHyperuricemia is widely thought as a risk factor for myocardial infarction (MI) and all-cause mortality; however, the relation of serum uric acid (sUA) and subclinical myocardial injury (SCeMI) remains unclear. We hypothesize that sUA is associated with subclinical myocardial injury.Methods and resultsA total of 5880 adult individuals (57.9 ± 13.0 years, 54.23% women) without known cardiovascular disease from National Health and Nutrition Examination Survey (NHANES) III were included. Determined by Cardiac Infarction Injury Score (CIIS) from 12-lead electrocardiogram, SCeMI was defined by CIIS ≥10 units. The relationship between sUA and SCeMI was analyzed by using logistic regression models and the smooth curve fitting. Subgroup analyses were conducted. After adjusting for potential confounding variables, the smooth curve fitting revealed a non-linear relationship between sUA level and SCeMI. When sUA was above the inflection point 266.5 μmol/L, each 100 unit increase in sUA increase the risk of SCeMI by 15%. In women group, when sUA>340.3 μmol/L, each 100 unit increase in sUA increase the risk of SCeMI by 71%, but no significant correlation was observed in men group.ConclusionsOur findings confirm that sUA is an independent risk factor for subclinical myocardial injury after adjusting for potential confounding variables, and existence of such an association in women only, which require more random control trials to confirm the strategy of cardiovascular disease prevention based on sUA reduction in female.     

La maladie goutteuse

Gout is a chronic disease due to the deposition of monosodium urate microcrystals in joints and tissues. Its incidence and prevalence are increasing worldwide in close relation with the epidemic of obesity and metabolic syndrome. Gout is related to chronic hyperuricemia that should be treated to ensure the reduction or even the disappearance of acute attacks (“gout flares”) and to reduce the size and number of tophi. If arthritis of the first metatarsophalangeal joint is the most typical form, other joints may be affected, including the spine. Demonstration of urate microcrystals arthritis allows diagnosis of gout but, in the absence of possibility of performing joint puncture, imaging may be useful for providing complementary diagnostic elements. Appropriate care is essential to reduce the number of flares and the evolution towards gouty arthropathy but also in terms of public health in order to reduce costs related to this pathology.     

Baseline serum uric acid level as a predictor of cardiovascular disease related mortality and all-cause mortality: A meta-analysis of prospective studies

Objective

Serum uric acid (SUA) levels have been used to predict cardiovascular and all-cause mortality event, but the data have yielded conflicting results. We investigated whether SUA was an independent predictor for cardiovascular or all-cause mortality with prospective studies by meta-analysis.

Methods

Pubmed and Embase were searched without language restrictions for publications available till April 2013. Only prospective studies on cardiovascular or all-cause mortality related to SUA levels were included. Pooled adjust relative risk (RR) and corresponding 95% confidence intervals (CI) were calculated separately for the highest vs. lowest category or the lowest vs. middle category.

Results

For the highest SUA, eleven studies with 172,123 participants were identified and analyzed. Elevated SUA increased risk of all-cause mortality (RR 1.24; 95% CI 1.09–1.42) and cardiovascular mortality (RR 1.37; 95% CI 1.19–1.57). Subgroup analyses showed that elevated SUA significantly increase the risk of all-cause mortality among men (RR 1.23; 95% CI 1.08–1.42), but not in women (RR 1.05; 95% CI 0.79–1.39). Risk of cardiovascular mortality appeared to be more pronounced among women (RR 1.35; 95% CI 1.06–1.72). The association between extremely low SUA and mortality was reported in three studies; we did not perform a pooled analysis because of high degree of heterogeneity in these studies.

Conclusions

Baseline SUA level is an independent predictor for future cardiovascular mortality. Elevated SUA appears to significantly increase the risk of all-cause mortality in men, but not in women. Whether low SUA levels are predictors of mortality is still inconclusive.     

冠心病患者血尿酸水平与冠状动脉病变程度的相关性分析

目的:探讨血清UA水平与冠状动脉病变严重程度的关系。方法:回顾性分析2011年6月至2012年6月,在我科住院行冠状动脉造影检查者408例。根据造影结果,分为冠状动脉正常组和冠心病组,并根据SYNTAX评分,将冠心病组分为低危组(1～22分)、中危组(23～32分)及高危组(>33分)。测定空腹UA水平、空腹血脂:包括TC、TG、HDL-C及LDL-C。比较各组患者血脂、血UA水平。男性UA以<416μmol/L为正常值,女性以<357μmol/L为正常值,再将患者分为高UA组和正常UA组,比较两组SYNTAX评分,并进行相关性分析。结果:SYNTAX评分高危组、中危组与正常组比较TC、LDL-C显著增高,而正常组、低危组间差异无统计学意义(P>0.05)。SYNTAX评分高危组、中危组与同性别冠状动脉正常组比较,血UA水平显著增高。正常UA组与高UA血症组在年龄、性别、TC、TG、HDL-C及LDL-C的差异无统计学意义(P>0.05)。高UA血症组患者的冠状动脉SYNTAX评分显著高于正常血UA组。多元Logistic回归分析表明血UA水平与冠状动脉病变程度相关。结论:血UA是冠状动脉病变严重程度的相关危险因素,随着血UA水平的增高,冠状动脉病变程度增加。     

2型糖尿病患者中血尿酸相关基因的基因间相互作用分析

目的 探讨T2DM患者中SUA与相关基因的关联及交互作用.方法 纳入1574例T2DM患者,采用基质辅助激光解吸电离飞行时间质谱技术对56个基因的86个SNP位点进行基因分型,运用PLINK软件进行关联分析及基因型交互作用分析.结果 在T2DM患者中ABCG2（rs2231142）、PKHD1（rs9395706）、PDGFB（rs2285094）、LPHN3 （rs6856526）及MC4R（rs17782313）基因的多态性与SUA水平相关（P＜0.05）.同时,有6组基因存在交互作用（P＜0.001）.结论 ABCG2、PKHD1、PDGFB、LPHN3及MC4R基因的多态性与T2DM患者SUA水平相关.