Objective To review literatures regarding the diagnosis of asthma with the measurement of exhaled nitric oxide( eNO) and assess the effectiveness and accuracy of eNO in the diagnosis of asthma.Methods MEDLINE, OVID, CBMdisc, CNKI( 1991 to 2008) for studies involving the diagnostic value of eNO were searched, and references of included studies were also hand searched. QUADAS ( Quality Assessment of Diagnostic Accuracy Studies) items were used for quality assessment in the systematic review. Meta-disc software was used to analyze heterogeneity. Sensitivity, specificity and summary diagnostic odds ratio( SDOR) were used for the pooled analysis. The summary receiver operating characteristic ( SROC)curves were drew and the summary areas under the SROC ( SAUC) were calculated. Finally, sensitivity analysis was performed. Results Eleven literatures with15 studies were included. These 15 studies had well controlled the bias of partial verification, differential verification, incorporation and withdrawals. The possibility of the disease progression bias was less and the reference standard review could have a greater bias. The spectrumcomposition of a study, the inclusion and exclusion criteria and the reporting quality were poorly reported. In statistical analysis, the totally pooled sensitivity, pooled specificity, SDOR, SAUC of the measurement of eNO in the diagnosis of asthma was 0. 68, 0. 79, 12. 73, 0. 8446, respectively. Sensitivity analysis demonstrated no disproportionate influences of individual study. Conclusions eNO has a certain value in the diagnosis of asthma. To make further analysis, more studies with high quality are needed.
目的 了解成都地區非酒精性脂肪肝（NAFLD）及高尿酸血癥（HUA）患病情況及相關因素。 方法 對2010年9月－2011年3月健康體檢的36 000名18歲以上受檢者，進行病史采集、體格檢查、空腹血糖、血脂、肝功能、腎功能、血尿酸檢測以及上腹部彩色多普勒超聲檢查。 結果 高尿酸血癥（HUA）的總患病率為18.17%。NAFLD患者HUA患病率為39.41%，明顯高于總患病率（P＜0.01）。NAFLD患者的HUA患病率隨體質量指數（BMI）的增加呈遞增趨勢。BMI、舒張壓、甘油三酯、膽固醇、丙氨酸轉氨酶、門冬氨酸氨轉移酶、谷氨酰轉肽酶、血肌酐、胱抑素C均隨著血尿酸水平的升高而遞增；高密度脂蛋白隨著血尿酸水平的升高而遞減。 結論 NAFLD及HUA關系密切，且二者與代謝紊亂聯系緊密。