基质金属蛋白酶在胎膜早破中的表达

目的:探讨基质会属蛋白酶MMP-2、-9及其组织抑制因子TIMP-1、-2与胎膜早破发病的关系.方法:应用免疫组化技术检测35例胎膜早破足月产妇、30例临产胎膜完整足月产妇及20例未临产胎膜完整足月产妇胎膜中MMP-2、MMP-9、TIMP-1、TIMP-2蛋白的表达水平.结果:MMP-2、-9蛋白在胎膜早破组表达明显高于临产组和对照组,两者比较,差异有显著性(P＜0.05),而在临产组的表达与对照组比较差异无显著性(P＞0.05).TIMP-1、-2蛋白对照组表达最高,临产组次之,胎膜早破组最低,但差异无显著性(P＞0.05).结论:胎膜组织中MMP-2、-9升高与胎膜早破的发生有关;MMP-2、-9及TIMP-1、-2在胎膜早破患者的胎膜组织中表达失衡导致胎膜破裂.     

Incidence of thrombosis after implantation of drug-eluting stents in patients with coronary artery disease

Background Randomized clinical trials have demonstrated equivalent safety to bare-metal stents after drug-eluting stents （DES） implantation. However, the DES thrombosis in randomized trials could not be comparable to those observed in clinical practice, frequently including off-label indications. This study sought to assess the incidence of DES thrombosis after implantation of DES in patients with real world coronary artery disease （CAD） in China.
Methods From December 2001 to April 2007, 8190 consecutive patients received the treatment with DES, 5412 patients completed one year follow-up： 2210 with sirolimus-eluting stent Cypher, 1238 with paclitaxel-eluting stent Taxus and 1964 with Chinese sirolimus-eluting stent Firebird, After two years of follow-up, there were 2176 patients （1245 Cypher, 558 Taxus and 373 Firebird）. All patients were treated with aspirin and clopidogrel over at least 9 months.
Results Among 8190 patients, 17 patients had acute stent thrombosis （0.24%）： 7 in the Cypher group, 4 Taxus and 6 Firebird; 23 patients had subacute stent thrombosis： 8 Cypher, 6 Taxus and 9 Firebird. The incidence of acute and subacute thrombosis was 0.49%： 0.50% Cypher, 0.63% Taxus and 0.41% Firebird. The incidence of late thrombosis at one year followup was 0.63%： 0.63% Cypher, 0.88% Taxus and 0.46% Firebird; at two year follow-up the incidence was 0.74%： 0.72% Cypher, 0.90% Taxus and 0.54% Firebird. There was no significant difference among three groups at 1 year and 2 years follow-up.
Conclusion The first generation DES in the treatment of complex lesions are safe and effective if patients are aggressively treated with dual antiplatelet agents.     

Comparison of laser epithelial keratomileusis and photorefractive keratectomy for the correction of myopia: a meta-analysis

Background It is unclear whether a laser epithelial keratomileusis （LASEK） has any significant advantage over a photorefractive keratectomy （PRK） for correcting myopia. We undertook this meta-analysis of randomized controlled trials to examine possible differences in efficacy, accuracy, safety and side-effects between two methods, LASEK and PRK, for correcting myopia. Methods A systematic literature retrieval was conducted in the PubMed, EMBASE, Chinese Bio-medicine Database, and Cochrane Controlled Trials Register to identify potentially relevant randomized controlled trials. The statistical analysis was performed using a RevMan 4.2 software. The results included efficacy outcomes （proportion of eyes with uncorrected visual acuity （UCVA）〉 20/20 at 1 month and 12 months post-treatment）, accuracy outcomes （proportion of eyes within ±0.50 diopters （D） of target refraction at 1 month and 12 months post-treatment）, safety outcomes （loss of 〉2 lines of best spectacle-corrected visual acuity （BSCVA） at 〉 6 months post-treatment）, mean pain scores on day 1 post-treatment, and mean corneal haze scores at 6 and 12 months post-treatment. Results Seven articles describing a total of 604 eyes with myopia from 0 to -9.0 D were identified in this meta-analysis. The combined results showed that the efficacy and accuracy outcomes between the two groups at 1 month and 12 months post-treatment were comparable. No patient lost 〉 2 lines of BSCVA at 〉 6 months post-treatment in four relevant trials. Compared with PRK, LASEK did not relieve discomfort on day 1 post-treatment or reduce corneal haze intensity at 6 and 12 months post-treatment. Conclusions According to the available data, LASEK does not appear to have any advantage over PRK for correcting myopia from 0 to -9.0 D. This meta-analysis focuses mainly on the comparison of the early, mid-term and mid-long term results of the two methods. Additional studies to compare the long-term （〉one year） results should be considered.     

老年人心房颤动并发脑卒中40例临床分析

目的探讨老年人心房颤动并发脑卒中的危险因素及防治。方法将2002-2007年收治的216例老年心房颤动患者,分为脑卒中组40例、对照组（无脑卒中组）176例,采用病例对照研究的方法,分析病史、体征、辅助检查及合并疾病、用药情况。结果脑卒中组与对照组中,其脑卒中危险因素差异有统计学意义（P〈0.05）。结论年龄≥70岁、持续性房颤、高血压、糖尿病、左心房增大、未抗栓治疗是老年房颤并发脑卒中的高危危险因素。控制危险因素,合理应用抗凝、抗血小板药,可减少老年人心房颤动并发脑卒中的发生。     

复方异丙安替比林片在健康人体的药代动力学研究

目的研究复方异丙安替比林片在健康人体内药动学特征。方法12名受试者随机交叉单次空腹口服复方异丙安替比林片1、2、3片（每片含异丙安替比林220mg、苯海拉明20mg）;另12名受试者多次给药1片,连续10次,每8小时服药1次。采用高效液相色谱-质谱法测定血浆和尿中异丙安替比林、苯海拉明的浓度,计算药动学参数。结果多次和单次给药（1片）后苯海拉明的峰浓度（Cmax）分别为（143．75±33．995）μg/L和（63．608±56．908）μg/L,终末半衰期（t1/2x）分别为（16．619±26．588）h和（9．507±4．932）h;曲线下面积（AUC0-4）分别为（1226．022±476．67）h·μg/L和（470．161±219．52）h·μg/L。多次和单次给药（1片）后异丙安替比林的Cmax分别为（3220±1304．781）μg/L和（3252．083±1135．837）μg/L,终末半衰期（t1/2x）分别为（3．029±1．856）h和（2．826±1．211）h;AUC0-4分别为（6522．007±1714．091）h·μg/L和（8055．037±2418．651）h·μg/L。20mg苯海拉明多次给药后平均稳态高峰血药浓度（Cmaxss）为（143．750±33．995）μg／L,平均稳态谷浓度（Cminss）为（49．225±39．187）μg／L,平均稳态浓度（Cavss）为（65．399±14．942）μg/L,多次给药后的波动度（DF）为（1．627±0．532）,蓄积因子（R）为（3．098±1．444）。220mg异丙安替比林Cmaxss为（3320．0±1304．781）μg/L,Cminss为（151．211±138．197）μg/L,Cavss为（749．052±183．166）μg/L,DF为（4．255±1．294）,R为（1．222±0．800）。结论健康受试者口服复方异丙安替比林片后苯海拉明体内过程复杂,个体差异较大,血浆中苯海拉明和异丙安替比林浓度和AUC随剂量依赖性增加。按每次1片,每日3次给予复方异丙安替比林片后苯海拉明在人体内有显著蓄积。     

HLA-B*27高分辨等位基因在1606例疑似强直性脊柱炎患者中的表达

目的:探讨HLA-B*27高分辨等位基因分析对强直性脊柱炎(AS)诊断和鉴别诊断的临床应用价值.方法:采用PCR-SSP和PCR-SBT技术对2004年1月-2008年3月本院收治的广东地区1606例骨和关节疾病(0AP)患者(其中确诊AS患者1022例)进行了HLA-B*27低分辨和HLA-B*27高分辨的基因频率调查和分析.结果:OAP患者中B27高分辨基因频率(70.50%,141/200)高于B*27低分辨基因频率(41.82%,588/1 406)(p<0.001);1 022例AS患者中高分辨的B*27基因频率(84.21%,121/133)也高于B*27低分辨基因频率(44.77%,398/889)(P<0.001).HLA-B*27阳性患者表达出的HLA-B*27等位基因为B*2704占88.44%(459/519),B*2705占9.83%(51/519),B*2702占1.73%(9/519).结论:高分辨技术能够准确检测HLA-B*27阳性患者,AS患者在不同地区或人群所表现出的HLA-B*27易感基因不同;应用高分辨技术进行HLA-B*27等位基因分型,将有益于提高AS早期诊断和鉴别诊断,发挥对AS预后预测和治疗选择的临床应用价值.     

髂骨尤文肉瘤的MRI诊断

目的:分析髂骨尤文肉瘤的MRI表现及其诊断价值,以期提高对其的认识。方法:回顾性分析经病理证实的6例髂骨尤文肉瘤MRI表现,并复习文献所见。结果:6例中5例位于髂骨翼,1例位于髂骨体部。同侧骶髂关节和髋关节未见受侵。5例局部有溶骨性骨质破坏,1例髓腔硬化明显。骨皮质部分消失破坏,边缘毛糙。1例有针状骨膜反应。在病变髂骨前后均见巨大软组织肿块包绕,6例软组织肿块中均可见线样低信号间隔。结论:髂骨尤文肉瘤MRI表现缺乏特征性,但当髓腔和骨皮质出现广泛的溶骨性破坏,同时又有针状骨膜反应及具有低信号间隔的软组织肿块,结合年龄和发病部位,应考虑到本病可能。MRI可敏感、确切地显示肿瘤对骨内、骨外侵犯的范围及其与邻近组织器官的关系,但显示钙化和骨膜反应不如平片和CT。     

生理学发展史在教学中的作用

生理学发展史在生理学教学中有着不可忽视的作用。将生理学发展史融入课堂教学，可以较好的激发学生学习兴趣、加深学生对知识点的理解，提高课堂教学效果；同时可以培养学生良好的逻辑思维习惯、严谨的科学态度，帮助他们树立正确的人生观和价值观。     

腰椎间盘突出症外周血TNF-α表达水平的临床研究

目的探讨外周血肿瘤坏死因子(TNF-α)水平与腰椎间盘突出症(LDH)的关系。方法46例LDH患者按核磁共振(MRI)影像学表现分为膨突型、脱出型,采用放免法(RIA)检测外周血TNF-α水平。结果LDH膨突组、脱出组、正常对照组外周血TNF-α比较,前两者较后者增高,脱出组增高更明显,且各组间差异显著。结论LDH存在外周血TNF-α水平异常,不同影像学类型LDH外周血TNF-α水平有差异。     

济宁市大中学生对湿地保护认知的调查

目的通过对文、理科大学生，城乡中学生的湿地基本概念的掌握情况、湿地保护的态度、在湿地保护方面宣传教育情况、湿地功能方面的认知情况等调查；找出问题，以采取相应措施。方法采用分层整群随机抽样的方法，对济宁市两所城乡中学和两所大学480名学生进行问卷调查。结果城乡中学生，文、理科大学生湿地保护的基本概念熟悉程度、所获取湿地知识的渠道、以及湿地功能的了解程度等均存在显著性差异。结论调查对象在湿地保护意识与知识等方面存在多项不足，应当有针对性地开展宣传、教育活动。