中国南方汉族人MMP-9基因多态性与COPD易感性的关系

目的探讨中国南方汉族人基质金属蛋白酶-9(MMP-9)基因多态性与慢性阻塞性肺疾病(COPD)易感性的关系.方法应用限制性片段长度多态性(RFLP)技术,检测MMP-9启动子基因型在100例COPD患者和98例健康吸烟者中的频率.结果 COPD中同源野生型(C/C)、杂合型(C/T)频率分别是86%、14%,健康人的频率分别是98%、2%,两组基因频率分布差异具有显著性(P＜0.01).等位基因C频率分别是93%比99%,等位基因T频率分别是7%比1%,两组等位基因的分布差异也具有显著性(P＜0.05).结论 MMP-9启动子-1562位的多态性可能与中国南方汉族人群COPD易感性相关.     

中国北方汉族人群基质金属蛋白酶-1基因多态性与慢性阻塞性肺疾病易感性的关系

目的探讨中国北方汉族人群基质金属蛋白酶1(MMP1)基因多态性与慢性阻塞性肺疾病(COPD)易感性的关系。方法应用聚合酶链反应限制性片段长度多态性法(PCRRELP)检测MMP1基因型在59例中国北方汉族人COPD患者和109例健康人中频率的分布,用回顾性病例对照实验设计分析人群对COPD易感性的相对危险度及相应可信区间。结果COPD患者MMP1基因的突变型(2G/2G)、杂合型(2G/1G)、野生型(1G/1G)频率分布分别为54.2%(32/59)、37.3%(22/59)和8.5%(5/59),健康人为71.5%(78/109)、20.2%(22/109)和8.3%(9/109)。以野生型(1G/1G)与杂合型(2G/1G)为参考组,MMP1基因突变型(2G/2G))与参考组相比,OR=0.467,95%CI=0.237～0.924,差异有统计学意义(P<0.05)。结论MMP1基因突变型(2G/2G)降低中国北方汉族人群对COPD的遗传易感性。     

Surfactant protein a polymorphism is associated with susceptibility to chronic obstructive pulmonary disease in Chinese Uighur population

This study investigatedexamined the correlation between surfactant protein-A (SP-A) polymorphism and the susceptibility of cvhronic obstructive pulmonary disease (COPD) in Xinjiang Uighurs. Genomic DNA was extracted from peripheral blood of 194 COPD smokers and 201 healthy smokers of Uighur who were hospitalized in or paid a visit to one of the four Xingjiang-based hospi-tals involved in the study, betweenfrom March 2009 to December 2010. Single nucleotide polymor-phisms (SNPs) were studied on A/G atwithin amino acid aa62 (CCA/CCG rs1136451) and C/T within aa219 (CGG/TGG, rs4253527) in SP-A. Genotypes were determined by using the TaqMan polymerase chain reaction (PCR). Our results showed that genotype frequencies were different be-tween the COPD and normal smokers infor aa62 (χx2=6.852, P=0.033). There were also significant differences in allele genotype frequencies between the COPD and the control and allele G might de-crease the risk COPD (χx2=6.545, P=0.011; OR=0.663; 95% CI: 0.484-0.909). The result suggested We were led to conclude that polymorphism of aa62 (CCA/CCG, rs1136451) of SP-A may be asso-ciated with the susceptibility to COPD in Xingjiang Uighurs.     

慢性阻塞性肺疾病患者氧化应激与血清基质金属蛋白酶9的关系及其在并发肺动脉高压中的作用

目的 研究慢性阻塞性肺疾病（COPD）患者氧化应激与血清基质金属蛋白酶9（MMP-9）的关系及其在并发肺动脉高压（PAH）中的作用.方法 对62例COPD患者采用多普勒超声心动仪测定肺动脉收缩压（PASP）,按PASP将患者分为单纯COPD组（PASP正常）、轻度PAH组、中度PAH组、重度PAH组;同期另择体检健康者19例作为对照组.采用ELISA法检测并比较各组研究对象尿8-异前列腺素F2α（8-iso-PGF2α）和血清MMP-9水平,分析COPD并发PAH者尿8-iso-PGF2α水平与血清MMP-9水平的相关性.结果 中度PAH组及重度PAH组尿8-iso-PGF2α及血清MMP-9水平均明显高于对照组、单纯COPD组及轻度PAH组（均P＜0.05）,轻度PAH组MMP-9水平明显高于对照组（P＜0.05）,各组间其他两两比较均无明显差异（均P＞0.05）.相关性分析结果显示,COPD并发PAH者,尿8-iso-PGF2α水平与血清MMP-9水平呈显著正相关[r=0.372,P=0.009）.结论 COPD患者尿8-iso-PGF2α和血清MMP-9水平升高与并发中-重度PAH密切相关,通过影响肺血管重建起作用;COPD患者氧化应激增加可促使MMP-9合成和分泌.     

Surfactant protein B 1580 polymorphism is associated with susceptibility to chronic obstructive pulmonary disease in chinese han population

Whether surfactant protein B (SP-B)-18A/C and 1580C/T polymorphism were associated with susceptibility to chronic obstructive pulmonary disease (COPD) in Chinese Han population和was investigated. After genomic DNA was isolated from blood of COPD smokers and control smokers, the genotypes of SP-B-18A/C and SP-B1580C/T polymorphism loci were determined by polymerase chain reaction-restriction fragment length polymorphism analysis (PCR-RFLP) respectively.The results showed that there was significant difference in genotypes distribution frequency of SPB1580C/T polymorphism locus between COPD smokers and control smokers. C→T mutation rate (including TT homozygote and CT heterozygote) in COPD smokers was higher than in control smokers (57.9 % vs 41.7 %, X^2 =4.93, P＜0.05), whereas there was no significant difference in genotypes distribution frequency of SP-B1580-18A/C locus between COPD smokers and control smokers. The allele frequency (29.1 ％) of SP-B1580-18A/C locus is lower than T allele (70.9 ％) in Chinese Han Population, and the distribution was different from that in Mexican, in which, the A and T allele frequencies were 85 % and 15 % respectively. It was concluded that SP-B1580 T allele was probably associated with increased susceptibility to COPD in Chinese Han population; The polymorphism of SP-B-18A/C locus maybe varied with race.     

白介素6基因多态性与慢性阻塞性肺疾病的相关性研究

目的探讨白细胞介素6（Interleukin-6,IL-6）基因0572C／G单核苷酸多态性与慢性阻塞性肺疾病（chronic obstructive pulmonary disease, COPD）易感性的关系。方法应用聚合酶链式反应-限制性片段长度多态性（PCR—RFLP）方法,检测192例COPD患者和195例健康体检者IL-6基因启动子区域-572C／G位点基因型分布情况,观察该位点基因多态性是否与COPD患者肺功能的程度存在相关。结果两组人群均存在IL-6基因-572C／G多态性;两组人群基因型、等位基因频率差异存在显著统计学意义,COPD组CG＋GG基因型、G等位基因频率均高于对照组（P〈0．01）;基因型频率的相对风险分析发现,CG、GG基因型各自患COPD的风险分别是CC基因型的2．09倍（95％CI：1．03—4．23）和5．44倍（95％CI：1．20～24．75）;-572C／G多态性在轻中度、重度COPD组间的分布差异无统计学意义（P〉0．05）。结论IL-6基因-572C／G多态性可能与COPD易感性相关,该位点携带G等位基因的人群可能更容易发生COPD。     

MMP -9 和COX -2 基因多态性与慢性阻塞性肺疾病的相关性研究

目的 探讨MMP- 9 和COX- 2 基因多态性与慢性阻塞性肺疾病的关系。方法 选取71 例慢性阻塞性肺疾病患者（COPD 组）和同期63 例急性呼吸道感染和健康体检者（NC 组）作为研究对象,PCRRFLP法测定MMP- 9（R279Q）、COX- 2（1195G>A）多态性,分析不同基因型与COPD 的关系。结果 NC组与COPD 组MMP- 9（R279Q）基因、COX- 2（1195G>A）的GG、AA 基因型差异有统计学意义（P =0.010和0.021）,G、A 等位基因频率差异有统计学意义（P =0.000）。MMP 基因R279Q 位点的G 等位基因频率[OR=2.24（95%CI ：1.59,7.03）P =0.000],COX- 2 基因1195G>A 位点的A 等位基因频率[OR=2.12（95%CI ：1.57,6.82）P =0.024] 为COPD 的危险因素。MMP- 9（R279Q）、COX- 2（1195G>A）基因多态性与FEV1%pred、FEV1/FVC、MMP- 9 及COX- 2 具有相关性（P =0.015、0.018、0.009、0.009,0.021、0.017、0.015 和0.000）。结论 MMP- 9 基因R279Q 位点、COX- 2 基因1195G>A 位点多态性为COPD 的危险因素,与FEV1%pred、FEV1/FVC 下降及MMP- 9、COX- 2 升高相关。     

TNF-α Up-regulates Matrix Metalloproteinase-9 Expression and Activity in Alveolar Macrophages from Patients with Chronic Obstructive Pulmonary Disease

Chronic obstructive pulmonary disease (COPD) is a major cause of chronic morbidity and mortality throughout the world. Unbalance of proteinases and an-tiproteinases is thought to be important in the pathogene-sis of COPD, as well as inflammation and oxidative stress. However, neutrophil elastase is likely to be the major proteinase involved in lung destruction in alpha-1 antitrypsin deficiency, and it may not be involved in COPD caused by inhalational exposures. Matrix metal-loproteinases…     

中国北方汉族人群谷胱甘肽转硫酶M1基因多态性与COPD易感性的关系

目的 :探讨中国北方汉族人谷胱甘肽转硫酶M 1(GSTM 1)基因多态性与慢性阻塞性肺疾病 (COPD)易感性的关系。方法 :应用内参照PCR法检测GSTM 1基因型在中国北方汉族人COPD患者和 12 3例健康人中频率的分布 ,采用回顾性病例 -对照设计统计相对危险度 (OR)。结果 :COPD患者该酶缺失基因型频率为 3 3 .3 % ,健康人中缺失基因型频率为 46.3 % ,两组比较差异无显著性 (P >0 .0 5 ) ,OR =1.72 7( 95 %CI =0 .90 8 3 .2 86)。结论 :GSTM 1基因与中国北方汉族人COPD易感性无关。     

Heme oxygenase-1 polymorphism associated with severity of chronic obstructive pulmonary disease

Background Recent studies have suggested that susceptibility to chronic obstructive pulmonary disease （COPD） might be related to the length polymorphism of （GT）n repeat in the 5＇-flanking region of heme oxygenase-1 （HOX-1） gene. However, there has been no research about the relationship between the polymorphism of HOX-1 gene and severity of COPD. Methods The polymorphism of HOX-1 gene in 452 patients with COPD from Han population in Southwest China was analysed by fragment analysis. The frequencies of the HOX-1 genotype were compared with the stage of COPD of each patient. Results The HOX-1 genotypes were classified into two groups： group I were individuals with class L allele （the number of GT 〉32 repeats）, and group II were those without class L allele （the number of GT 〈32 repeats）. The genotypic frequency of the HOX-1 group I was significantly higher than group II in the very severe COPD patients （36.8% vs 22.4%, P〈0.01, OR=2.0, 95% CI 1.3-3.1）, while the genotypic frequency of the HOX-1 group II was lower in the mild COPD （16.0% vs 26.0%, P=-0.02, OR=0.5, 95% CI 0.3-0.9）. However, in moderate and severe stages COPD, there were similar genotypic frequencies between HOX-1 group Ⅰ and group Ⅱ. Conclusions Genetic polymorphism in HOX-1 is associated with the severity of COPD in Southwest China. COPD patients with class L allele may be susceptible to develop very severe COPD. Conversely, the COPD patients without class L allele may be more easily stabilized on mild COPD.     

内皮素受体B的基因多态性与COPD的相关性研究

目的探讨内皮素受体B（endothelin B receotor,EDNRB）基因的第4外显子-30 G／A处单核苷酸多态性与慢性阻塞性肺疾病（chronic obstructive pulmonary disease,COPD）易感性之间关系。方法采用PCR—RFLP技术,检测并分析EDNRB基因-30G／A（L277L）单核苷酸多态性位点在COPD组和健康对照组中的基因型频率、等位基因频率,同时分析该突变位点是否与COPD患者肺功能的下降程度相关。结果研究发现EDNRB基因-30G／A处基因型频率在COPD组和对照组之间的分布存在统计学差异（P〈0．05）,但等位基因频率的分布在两组之间无统计学差异存在（P〉0．05）。此外,COPD患者组中AA基因型组的最大呼气中段流速值（maximal mid—expiratory flow,MMEF）（0．51±0．44）明显小于GG基因型组（1．49±1．70）,且三组之间的差异存在统计学意义（P〈0．05）。结论EDNRB-30G〉A位点处的基因多态性可能与COPD的易感性相关,同时AA基因型与较低的MMEF值相关。     

TOLL 样受体4、基质金属蛋白酶-9在慢性阻塞性肺疾病肺血管中的表达及其与肺血管重建的关系

目的：探讨TOLL样受体4（TLR4）、基质金属蛋白酶-9（MMP-9）在慢性阻塞性肺疾病肺血管中的表达及其与肺血管重建的关系。方法收集因肺鳞癌行肺叶切除的癌旁组织标本50例,根据肺功能分为COPD组和非COPD组各25例,镜下观察炎症程度及测定肺动脉管壁面积/管总面积（ WA％）、管壁厚度/血管外径（ WT％）。免疫组化法测定肺血管平滑肌细胞TLR4、MMP-9及增殖细胞核抗原（ PCNA）的表达,并分析其与血管重建的相关性。结果⑴COPD组肺血管炎症程度、WA％、WT％显著高于非COPD组,差异有统计学意义（ P ＜0.01）;⑵COPD组肺血管平滑肌细胞TLR4、MMP-9的表达水平与非COPD组相比明显升高,差异有统计学意义（ P ＜0.01）;⑶TLR4、MMP-9表达水平与WA％、WT％及血管炎症程度呈正相关（ r ＝0.67,0.74,0.47;0.59,0.71,0.61, P ＜0.01）,与PCNA的表达呈正相关（ r ＝0.44,0.33, P ＜0.01）,TLR4表达水平的上调与MMP-9的表达呈正相关（ r ＝0.55, P ＜0.01）。结论 COPD患者肺动脉存在明显炎症反应、血管肌化,TLR4表达的上调可能加剧炎症反应,同时促使MMP-9的表达增强,在肺血管重建过程中起到了重要作用。     

Association between the interleukin-13 gene and development of chronic obstructive pulmonary disease in southern Chinese Han population: a case-control study

Background Interleukin-13 （IL-13） has been implicated to be responsible for recruitment of inflammatory cells from the blood to the lung,regulation of matrix metalloproteinase and induction of mucin production and secretion in chronic obstructive pulmonary disease （COPD）.We determined plasma IL-13 levels in patients with COPD and investigated its association with common polymorphisms of IL-13 gene in a case-control study.Methods We genotyped 160 cases and 175 control subjects in a local hospital using Mass-ArrayTM Technology Platform then tested the association of four SNPs in IL-13 （rs1295685,rs1800925,rs1881457,rs20541） with COPD,and then determined plasma IL-13 levels in patients with COPD and controls.Results Association was found between IL-13 gene SNPs （rs20541 and rs1800925） and an increased risk of COPD.By linkage disequilibrium （LD） analysis,two blocks （rs1881457 and rs1800925; rs20541 and rs1295685） were found.The risk of COPD was found associated with the IL-13 gene polymorphism among southern Chinese Han population.Plasma IL-13 level was increased in COPD patients compared with controls.Conclusions The polymorphism of the IL-13 gene is associated with an increased risk of COPD in southern Chinese Han population.Plasma IL-13 levels were found elevated in patients with COPD.     

谷胱甘肽S-转移酶M1、T1基因多态性与慢性阻塞性肺疾病易感性关系的研究

目的　探讨谷胱甘肽S 转移酶系 (GSTs)中GSTM1、GSTT1基因多态性与慢性阻塞性肺疾病 (COPD)易感性的关系。方法　COPD患者 14 6例 ,健康吸烟对照组 10 9例。采用多重PCR方法检测GSTM1和GSTT1基因多态性 ,运用SPSS10 0统计软件进行数据处理和分析。结果　COPD组和对照组的GSTM1纯合缺失型分别为 5 8 9%和 5 2 3% ,GSTT1纯合缺失型分别为 4 5 2 %和4 5 0 % ,GSTM1和GSTT1同时纯合缺失型分别为 2 7 4 %和 19 3% ,三种基因型两组之间差异均无显著性 (P >0 0 5 )。经调整年龄、性别及吸烟指数后 ,COPD组和对照组三种基因型比例差异仍无显著性 (P >0 0 5 )。结论　未发现GSTM1、GSTT1基因多态性与COPD易感性相关 ,未发现两个基因之间有明显的协同作用。     

载脂蛋白M基因单核苷酸多态性与慢性阻塞性肺疾病的相关性分析

目的 探讨载脂蛋白M（apoM）基因单核苷酸多态性（SNP）与慢性阻塞性肺疾病（COPD）的相关性,以期为COPD高危人群的筛查、早期诊断及治疗提供依据。方法 采用碱基淬灭探针技术检测分析256例COPD患者（COPD组）和248例健康对照（对照组）的apoM基因rs805264、rs707922及rs707921多态性位点。结果 COPD组和对照组apoM基因rs805264、rs707922及rs707921位点基因型频率分布符合Hardy-Weinberg遗传平衡定律（P均>0.05）。COPD组rs805264位点的AA纯合子基因型频率低于对照组,GG+GA基因型频率高于对照组,差异有统计学意义（χ²=4.769,P=0.029）;COPD组rs707921位点的AA纯合子基因型频率低于对照组,CC+CA基因型频率高于对照组,差异有统计学意义（χ²=4.769,P=0.029）;两组rs707922位点的基因型频率分布差异无统计学意义（P>0.05）。COPD组和对照组apoM基因rs805264、rs707922及rs707921位点等位基因频率分布差异均无统计学意义（P均>0.05）。rs805264位点与rs707921位点及rs707922位点与rs707921位点呈强连锁不平衡（D''均>0.8,r²均>0.8）,rs805264位点与rs707922位点呈完全连锁不平衡（D''=1.000,r²=0.820）。结论 ApoM基因rs805264和rs707921位点SNP可能与COPD的易感性有关,而rs707922位点SNP可能与COPD无关。     

解整合素-金属蛋白酶33基因位点多态性与慢性阻塞性肺疾病的相关性研究

目的探讨解整合素-金属蛋白酶33（ADAM33）基因BC＋1及F＋1位点多态性与山西地区汉族人群慢性阻塞性肺疾病（COPD）的关系。方法采用聚合酶链式反应（PCR）、DNA测序及序列对比的方法对103例COPD患者（COPD组）和100例健康者（对照组）ADAM33基因的BC＋1及F＋1位点进行多态性分析。结果ADAM33基因BC＋1位点3种基因型AA、AG、GG基因型频率在COPD组中分别为15.5%、45.6%和38.8%,在对照组中分别为17.0%、56.0%和27.0%,两组基因构成比比较,差异无统计学意义（χ2=3.296,P〉0.05）,A和G等位基因型的频率在COPD组中分别为38.3%和61.7%,在对照组分别为45.0%和55.0%,两组比较差异无统计学意义（χ2=1.847,P〉0.05）。F＋1位点3种基因型AA、AG、GG基因型频率在COPD组中分别为20.4%、38.8%和40.8%,在对照组中分别为7.0%、51.0%和42.0%,两组构成比比较差异有统计学意义（χ2=8.287,P〈0.05）,A和G等位基因型的频率在COPD组中分别为39.8%和60.2%,在对照组分别为32.5%和67.5%,两组比较差异无统计学意义（χ2=2.345,P〉0.05）。BC＋1位点未发现有增加患COPD的风险（OR=0.760,P〉0.05）,但F＋1位点可能有增加患COPD的风险（OR=1.357,P〈0.05）。结论 ADAM33基因F＋1位点多态性对山西地区汉族人群COPD发病有一定相关性;但BC＋1位点多态性对该人群COPD发病的影响不明显。     

细胞间黏附分子-1基因K469E多态性与慢性阻塞性肺疾病的相关性

目的:探讨细胞间黏附分子-1(intercellular adhesion molecule-1,ICAM-1)基因K469E多态性与中南地区汉族人群慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)的相关性及对ICAM-1的影响。方法:从来自中南地区、主要是湖南地区的汉族人群中收集COPD患者91例及健康对照者80例的血液标本,提取基因组DNA,用PCR方法扩增包含K469E位点的碱基序列后进行测序确定基因型;从完成测序的对象中随机抽取COPD患者60例、正常对照者26例的血清进行可溶性细胞间黏附分子-1(soluable intercellular adhesion molecule-1,sICAM-1)的检测。结果:COPD患者的基因型及等位基因分布频率与正常对照组差异没有统计学意义(P>0.05);但在16例极重度患者中,KE+EE基因型和E等位基因频率相对于75例非极重度患者增高(10/16 vs 26/75,12/30 vs 20/150,P<0.05)。COPD组的sICAM-1水平较对照组增高[(213.8±35.6) ng/mL vs (175.8±22.7) ng/mL,P< 0. 05],并且与第1秒用力呼气容积占预计值的百分比(forced expiratory volume in one second for the percentage of predicted value,FEV1%)呈负相关(r=-0.591,P< 0. 01); 但正常对照组和不同严重程度COPD亚组中,KE+EE基因型与KK基因型间sICAM-1水平比较差异无统计学意义(P>0.05)。结论:ICAM-1基因K469E多态性与中南地区汉族人群COPD的发病没有明显相关性;但携带E等位基因可能是病情严重程度的危险因素。     

Asymptomatic patients of chronic obstructive pulmonary disease in China

Background Chronic obstructive pulmonary disease （COPD） has a variable natural history and not all individuals follow the same course. This study aimed to identify the prevalence and characteristics of asymptomatic COPD patients from a population-based survey in China.Methods A multistage cluster sampling strategy was used in a population from seven different provinces/cities. All residents （over 40 years old） were interviewed with a standardized questionnaire and spirometry.Post-bronchodilator forced expiratory volume in 1 second （FEV1）/forced vital capacity （FVC） of less than 70% was defined as the diagnostic criterion of COPD. All COPD patients screened were divided into symptomatic group and asymptomatic group according to the presence or absence of chronic respiratory symptoms. Socio-demographic,personal and exposure variables were collected and analyzed.Results Among the 1668 patients who were diagnosed with COPD from the 25 627 sampling subjects, 589 （35.3%）were asymptomatic. The age, sex, body mass index （BMI）,rural and urban distributions, smoking habit and education levels were similar in the two groups. A total of 64.7% of the asymptomatic patients had no comorbidities. Cardiovascular diseases and lung cancer were more common among symptomatic COPD patients than asymptomatic group.Asymptomatic COPD group were less likely to present with poor ventilation in the kitchen, a family history of respiratory disease and recurrent childhood cough. Asymptomatic COPD patients had significantly higher FEV1 （73.1% vs. 61.0%）, FVC （91.9% vs. 82.0%）, and a higher ratio of FEV1/FVC （62.9% vs.58.7%） （all P 〈0.001） than symptomatic group. More asymptomatic patients were underdiagnosed （91.9% vs.54.3%, P〈0.001） than symptomatic patients.Conclusions This large population-based survey confirmed a high prevalence of asymptomatic COPD patients in China. More use of spirometry screening test may be important to the early detection of COPD.     

老年慢性阻塞性肺疾病患者肺动脉高压与纤溶功能的关系

对人院时的40例慢性阻塞性肺疾病患者检测ESR和CRP,待急性期症状平稳后检测多项凝血纤溶指标,并通过超声心动图检测肺动脉压。按肺动脉压数值分为正常和升高两组,升高组CRP和ESR明显高于正常组（P值分别为0．044和0．002）;升高组组织型纤溶酶原激活剂明显降低（P=0．04）,与血栓素B2呈中度正相关性（r=0．547）,血栓素B2与纤溶酶原激活剂抑制物-1呈高度正相关（r=0．929）。提示慢性阻塞性肺疾病患者的肺动脉高压伴随更大的炎症反应,并影响纤溶功能,促成血栓形成。