王在川 華琳
摘 要:目的 系統評價SOD中SOD1 +35A/C,SOD2 Val 16 Ala,SOD3 R213G基因多態性與慢性阻塞性肺疾病的相關性。方法 檢索CBM、CNKI、萬方、VIP、EmBase和PubMed等中英文數據庫,收集上述基因多態性與COPD的關系。采用Stata 12.0軟件進行統計分析,以病例組和對照組基因型分布比值比及其95%可信區間(95%CI)表示其關聯強度。結果 共納入研究11項,其中病例組5915例,對照組96831例。Meta分析結果顯示,SOD1 +35A/C(CA vsAA:OR:1.31;95%CI:0.88~1.95)、SOD2 Val 16 Ala (TC vsTT: OR:1.31;95%CI:0.88~1.95;CC vsTT:OR:0.93;95%CI:0.68~1.28)、SOD3 R213G (CA vsAA:OR,0.98;95%CI:0.63~1.53)基因多態性可能與COPD易感性無關,SOD3 R213G相關研究異質性較大(I2=68.8%),分組分析結果顯示異質性主要來自于吸煙人群中。結論 SOD1 +35A/C,SOD2 Val 16 Ala,SOD3 R213G基因多態性可能與COPD易感性無關,但在吸煙人群中SOD3 R213G多態性對COPD的影響需更多大樣本的研究進一步證實。
關鍵詞:超氧化物歧化酶;慢性阻塞性肺疾病;基因多態性;Meta分析
中圖分類號:R563.9 文獻標識碼:A DOI:10.3969/j.issn.1006-1959.2018.17.018
文章編號:1006-1959(2018)17-0057-06
Abstract:Objective To assess the SOD SOD1+35A/C,SOD2 Val 16 Ala,SOD3 R213G polymorphisms and chronic obstructive pulmonary disease relevance.Methods Chinese and English databases such as CBM,CNKI,Wanfang,VIP,EmBase and PubMed were searched to collect the relationship between the above gene polymorphisms and COPD.Statistical analysis was performed using Stata 12.0 software,and the correlation strength between the case group and the control group genotype distribution ratio and its 95% confidence interval(95%CI).Results A total of 11 studies were included,of which 5915 were in the case group and 96831 in the control group.Meta-analysis results showed that SOD1+35A/C(CA vsAA:OR:1.31;95%CI:0.88~1.95),SOD2 Val 16 Ala(TC vsTT:OR: 1.31;95%CI:0.88~1.95;CC vsTT:OR:0.93;95%CI:0.68~1.28),the polymorphism of SOD3 R213G(CA vsAA:OR,0.98;95%CI:0.63~1.53)may not be related to the susceptibility to COPD,and the heterogeneity of SOD3 R213G correlation study is large(I2=68.8%).The results of the group analysis showed that the heterogeneity mainly came from the smoking population.Conclusion The SOD1 +35A/C, SOD2 Val 16 Ala,SOD3 R213G gene polymorphism may be unrelated to the susceptibility to COPD,but the effect of SOD3 R213G polymorphism on COPD in smokers requires further studies.
Key words:Superoxide dismutase;Chronic obstructive pulmonary disease;Gene polymorphism;Meta-analysis
慢性阻塞性肺疾病(chronic obstructive pulmonary disease, COPD)是一種以進行性發展的氣流受限為特征的疾病[1],至2020年,將在全球死亡原因中位居第三位,在全球疾病經濟負擔中位居第五位。COPD的發生、發展過程與慢性氣道炎癥、氧化物/抗氧化物失衡、蛋白酶/抗蛋白酶失衡、自身免疫、細胞凋亡等多種機制相關[2]。除少數因素(如SERPINA1基因、吸煙等)已被完全確認為COPD的危險因素外,其他可能的危險因素如職業暴露、空氣污染,遺傳因素等仍需進一步探究[3]。影響COPD的遺傳因素較為復雜,包括氣道炎癥、蛋白酶失衡、氧化應激等多方面相關基因[4]。
機體的氧化/抗氧化平衡失調是造成COPD的重要原因之一[5]。超氧化物歧化酶(superoxide dismutase, SOD)是一種能夠催化過氧化物進行歧化反應的酶,是生物體內最重要的自由基清除劑,與肌萎性脊髓側索硬化癥、唐氏綜合征、動脈粥樣硬化等疾病緊密關聯[6]。……