Uric acid (UA) is the final product of human purine metabolism. As one of the main antioxidants in the body, it can scavenge oxidative radicals. Under the action of oxidative-antioxidant shuttle mechanism, the antioxidant activity of UA can be reversed, causing inflammation and oxidative stress of vascular endothelial cells. Hyperuricemia (HUA) is considered to be one of the major risk factors for diabetes and diabetic nephropathy. The study of HUA in diabetic retinopathy (DR) is also a hot topic. UA can cause retinal vascular sclerosis, and affect the occurrence and development of DR by promoting oxidative stress and inducing neovascularization.
摘要:目的: 系統評價非布索坦治療痛風的療效及安全性。 方法 :計算機檢索PubMed、EMBASE、SCI、CBM、CNKI、VIP、萬方數據庫及Cochrane圖書館,手工補充檢索;納入非布索坦治療痛風的隨機對照試驗(RCT);進行方法學質量評價和Meta分析。 結果 :共納入3個RCT(受試者1985例),A級文獻1篇,B級文獻2篇。Meta分析結果顯示:最后3月血清尿酸(SU)持續低于60 mg/dl患者數、隨訪結束時SU低于60 mg/dl患者數非布索坦組與對照組差異均有統計學意義;治療相關不良事件發生數與安慰劑組差異無統計學意義,與別嘌呤組差異有統計學意義。 結論 :基于當前證據,非布索坦治療痛風,能有效降低SU含量,減少治療相關不良事件發生率。Abstract: Objective: Assessing the effectiveness and safety of febuxostat for the treatment of gout. Methods :Randomized controlled trails(RCT) of febuxostat for the treatment of gout were gathered from the Cochrane Library、PubMed、EMBASE、SCI、CBM、CNKI、VIP、Wangfang Database, other relative researches were handsearched, each RCT was methodological quality evaluated, then analyzed by software RevMan50 Results :A total of 3 RCTs were collected (involving 1985 subjects); 1 was graded A, 2 were B; according to the Metaanalysis: the differences of subjects with last 3 monthly serum urate(SU)＜60mg/dl and subjects with SU＜60mg/dl at final visits were significant; treatmentrelated adverse events between febuxostat and allopurinol was significant different, but not significant difference between febuxostat and placebo. Conclusion : According to the evidence currently, febuxostat could reduce SU and the episodes of treatmentrelated adverse events.
Objective To analyze the effects of hyperuricemia (HUA) on the prevalence of dyslipidemia in the elderly. MethodsA total of 5 990 elderly people with complete and important variables from the China Health and Retirement Longitudinal Study (CHARLS) public database in 2015 were extracted. Their blood lipids, related physiological and biochemical indices, and basic demographic information were collected. The effects of HUA on the prevalence of dyslipidemia in the elderly were analyzed using the probit model, and empirical analysis was performed using the propensity score matching method (PSM). Results Among the 5 990 subjects, 13.6% of the elderly had HUA and the prevalence of dyslipidemia was 37.5%. After correcting the endogeneity among variables, the probability of dyslipidemia in elderly patients with HUA increased by 9.5%-11.7% (P<0.01), in which the probability of high triglyceridemia (TG), high total cholesterol (TC), high low-density lipoprotein cholesterol (LDL-C), and low high-density lipoprotein cholesterol (HDL-C) increased by 10.4%-11.5% (P<0.01), 2.7%-3.8% (P<0.01), 1.7%-2.3% (P<0.05), and 4.3%-4.9% (P<0.05), respectively. Conclusion HUA is associated with various types of dyslipidemia, among which its relationship with high TG and low HDL-C is strong. Targeted interventions should be taken for elderly HUA patients, aiming to reduce the rate of dyslipidemia and promote the goal of "healthy ageing" in China.
Objective To assess the efficacy and safety Losartan for essential hypertension associated withhyperuricemia. Methods Included randomized controlled trials of Losartan versus Valsartan. Electronic searchconducted in CENTRAL, the Cochrane Library (until 2008, Issue 4), PubMed, EMBASE, Chinese Biomedicine database,Chinese Scientific Journals Full-text Database, and China Journal Full-text Database (until 2008, Issue 10). Two reviewers extracted data independently. RevMan 5.0 software developed by the Cochrane Collaboration was used for Metaanalysis.Results Only 7 trials with 1 136 eligible patients were included in the systematic review. Meta-analysis showedno significant difference in reductions of systolic blood pressure, diastolic blood pressure, and adverse events betweenLosartan and Valsartan groups. However, a significant difference of serum uric acid reduction was observed betweenLosartan and Valsartan group. Losartan play a significant role of decreased serum uric acid levels. Conclusions Based on this systematic review, Losartan is effective and well tolerated in reducing BP and serum uric acid levels. Further large randomized, double blind, placebo controlled trials are needed in long-term safety and efficacy and different subgroups of Losartan.
Objective To evaluate the correlation between hyperuricemia (HUA) and benign prostatic hyperplasia (BPH). Methods A total of 666 elderly male patients, who had been admitted to the West China Hospital for routine physical examination in May, 2010, were included in this study. All the following indexes were collected: blood pressure, waistline, medical history, international prostatic symptom score (IPSS), serum uric acid (UA), triglycerides (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), fasting blood glucose (FBG), 2-hour postprandial blood glucose (PBG-2), prostate-specific antigen (PSA), and prostate volume (PV) measured by ultrasound. Patients with higher level of UA more than 420 μmol/L were included into the HUA group (n=151) while the other patients with normal UA (NUA) were in the NUA group (n=515). Both the metabolic and prostate related indexes in the two groups were compared, and the correlation between HUA and each indexes were analyzed using logistic regression model. Results HUA was significantly associated with abdominal obesity (OR=1.575, 95%CI 1.059 to 2.340), hypertriglyceridemia (OR=2.78, 95%CI 1.877 to 4.118), metabolic syndrome (CDS2007) (OR=1.912, 95%CI 1.267 to 2.885), BPH (OR=1.464, 95%CI 1.465 to 1.635) and lower urinary tract symptoms (LUTS) rating (OR=1.782, 95%CI 1.173 to 1.522). Conclusion HUA is correlated with BPH, meanwhile it is highly accompanied with other risk factors of cardioascular diseases. Hereby, comprehensive medical screening should be considered when treating such patients.
Hypertensive disorder of pregnancy (HDP) is a type of disease unique to women during pregnancy. The most common clinical types are gestational hypertension and preeclampsia, which seriously threaten the health of pregnant women and fetuses. At present, there are no established criteria for the prediction and prevention of HDP. In recent years, a large number of studies have been carried out on HDP around the world, and many studies have shown a close correlation between serum uric acid and HDP. This article reviews the results of existing literature, elucidates the relationship between serum uric acid and the pathogenesis of HDP, prediction of HDP occurrence and development, and adverse pregnancy outcomes.
ObjectiveTo investigate the association of preoperative serum uric acid (UA) levels with postoperative prolonged mechanical ventilation (PMV) in patients undergoing mechanical heart valve replacement.MethodsClinical data of 311 patients undergoing mechanical heart valve replacement in The First Affiliated Hospital of Anhui Medical University from January 2017 to December 2017 were retrospectively analyzed. There were 164 males at age of 55.6±11.4 years and 147 females at age of 54.2±9.8 years. The patients were divided into a PMV group (>48 h) and a control group according to whether the duration of PMV was longer than 48 hours. Spearman's rank correlation coefficient and logistic regression analysis were conducted to evaluate the relationship between preoperative UA and postoperative PMV. The predictive value of UA for PMV was undertaken using the receiver operating characteristic (ROC) curve..ResultsAmong 311 patients, 38 (12.2%) developed postoperative PMV. Preoperative serum UA level mean values were 6.11±1.94 mg/dl, while the mean UA concentration in the PMV group was significantly higher than that in the control group (7.48±2.24 mg/dl vs. 5.92±1.82 mg/dl, P<0.001). Rank correlation analysis showed that UA was positively correlated with postoperative PMV (rs=0.205, P<0.001). Multivariate logistic regression analysis demonstrated that preoperative elevated UA was associated independently with postoperative PMV with odds ratio (OR)=1.44 and confidence interval (CI) 1.15–1.81 (P=0.002). The area under the ROC curve of UA predicting PMV was 0.72, 95% CI0.635–0.806, 6.40 mg/dl was the optimal cut-off value, and the sensitivity and specificity was 76.3% and 63.0% at this time, respectively.ConclusionPreoperative elevated serum UA is an independent risk factor for postoperative PMV in patients undergoing mechanical heart valve replacement and has a good predictive value.
Objective To assess the effectiveness and safety of irbesartan for hypertensive patients with hyperuricaemia. Methods The databases such as The Cochrane Library (Issue 2, 2010), MEDLINE (by the end of April 2010), SCI (by the end of April 2010), CBM (by the end of April 2010) and CNKI (by the end of April 2010) were searched to collected randomized controlled trails (RCTs) on irbesartan for hypertensive combined with hyperuricaemia. Studies were screened according to the inclusion and exclusion criteria; data were extracted; the methodological quality was evaluated; and meta-analyses were conducted by using RevMan 5.0.0 software. Results Nine studies involving 977 patients were included. The results of meta-analyses showed that compared with the control group, irbesartan was superior in decreasing serum uric acid (SUA) (MD=57.12, 95%CI 16.08 to 98.15, P=0.006); it was similar in controlling blood pressure (Systolic pressure: MD= –0.24, 95%CI –2.19 to 1.71, P=0.81; Diastolic pressure: MD=0.46, 95%CI –1.58 to 2.50, P=0.66), and lower in the incidence rate of adverse reaction (RR=0.07, 95%CI 0.02 to 0.24, P=0.000 1). Conclusion The study suggests that irbesartan is effective and safe to control blood pressure and decrease serum uric acid for hypertensive patients with hyperuricaemia. But because all nine included studies are graded C in quality, the conclusion still needs to be further verified by long-term, large scale and high quality studies.
Objective To investigate the risk factors of high peritoneal transport characteristics in patients with end-stage renal disease undergoing initial continuous ambulatory peritoneal dialysis. Method The clinical data of continuous ambulatory peritoneal dialysis patients who underwent initial peritoneal dialysis and catheterization in the Department of Nephrology, West China Hospital of Sichuan University from January 2011 to December 2017 and completed the peritoneal equilibration test were collected retrospectively. According to the ratio of dialysate to plasma ratio for creatinine at 4 hour [D/Pcr (4h)] in the standard peritoneal equilibration test, the patients were divided into 4 groups (low transport, low average transport, high average transport and high transport). Spearman correlation analysis was used to analyze the related factors of D/Pcr (4h). The risk factors of high peritoneal transport characteristics were analyzed by ordered multi classification logistic regression. Results A total of 647 patients were included. The average age of the patients was (45.85±14.03) years, and the average D/Pcr (4h) was 0.67±0.12. Among them, there were 89 cases (13.76%) in the high transport group, 280 cases (43.28%) in the high average transport group, 234 cases (36.17%) in the low average transport group and 44 cases (6.80%) in the low transport group. Diabetic patients with D/Pcr (4h) were higher than those without diabetes mellitus (0.72±0.12 vs. 0.66±0.12; t=?4.005, P<0.001). Correlation analysis showed that age and 24-h urine volume were positively correlated with D/Pcr (4h); serum albumin, triglyceride, potassium, calcium, magnesium, phosphorus, hemoglobin, serum uric acid and creatinine were negatively correlated with D/Pcr (4h); body surface area (BSA), high sensitivity C-reactive protein, ferritin, cholesterol, sodium, intact parathyroid hormone and estimated giomerular filtration rate had no correlation with D/Pcr (4h). Regression analysis showed that serum albumin [odds ratio (OR)=0.842, 95% confidence interval (CI) (0.809, 0.877), P<0.001], serum uric acid [OR=0.996, 95%CI (0.994, 0.998), P<0.001], magnesium [OR=0.389, 95%CI (0.156, 0.965), P=0.042], BSA [OR=3.916, 95%CI (1.121, 13.680), P=0.032] were correlated with the incidence of peritoneal high transport characteristics. Conclusion Low serum albumin, high BSA, low magnesium and low serum uric acid were independent risk factors for high transport characteristics in initial PD patients.
