赤芍与白芍脐中穴给药的药理作用比较研究

目的：探讨赤芍与白芍脐中穴给药药理作用差异。方法：选择脐中穴为给药部位,考察赤芍、白芍贴膏剂脐中穴贴敷对二甲苯所致小鼠耳肿胀、醋酸致小鼠扭体反应以及ADP和凝血酶诱导的血小板聚集的影响。结果：与空白对照组比较,赤芍贴膏剂组有显著的镇痛和抑制血小板聚集作用（P〈0.05）,白芍贴膏剂组具有显著的镇痛作用（P〈0.05）,散结镇痛胶囊及桂枝茯苓贴膏剂有显著的抗炎、镇痛及抗血小板聚集作用（P〈0.05）,赤芍、白芍贴膏剂组对二甲苯致小鼠耳肿胀和空白组相比虽无显著性差异,但都呈一定作用趋势。桂枝茯苓贴膏剂组与赤芍贴膏剂组相比,也都有作用增强趋势,但无显著性差异。结论：赤芍脐中穴给药具有止痛、抗血小板聚集作用,白芍脐中穴给药具有止痛作用。     

支撑喉内镜下手术治疗声带息肉小结体会

目的 探讨支撑喉镜下喉显微手术治疗声带息肉或声带小结的效果.方法 将我科2011年5月～2013年10月收治的声带息肉,声带小结的病历资料46例,进行术后1～6个月回顾性分析.结果 治愈44例声音恢复正常（95.6％）属临床治愈;1例声嘶明显改善（2.17％）为有显著效果;l例声嘶改善（2.17％）为有效;0例无效（声嘶无明显改善）.结论 支撑喉镜下喉显微手术治疗声带息肉、声带小结,整体治疗效果显著,治愈率高,并发症少,安全可靠。     

脐血CD34+细胞的分离与纯化

脐血造血干细胞的分离是进行干细胞移植、体外扩增培养的关键。研究采用明胶自然沉降法、Ficoll分层法分离脐血MNC后,用MACS分离纯化CD34+细胞,计数并用流式细胞仪进行纯度分析。结果显示:每份脐血的采集量平均为95+52ml,3g/dl明胶自然沉降法所获MNC密度平均为(5.76±0.67)×107/ml;CD34+细胞密度平均为(5.53±1.16)×105/ml,较Fi-coll分层法高(P<0.01)。因此,3g/dl明胶自然沉降法是一种较理想的分离MNC的方法,用明胶沉降法和MACS相结合是分离脐血CD34+细胞的理想方法。     

Experimental Investigation of the Tensile Behavior of Selected Tire Cords Using Novel Testing Equipment

Aramid and polyamide cords are used in a wide range of applications, particularly in the automotive industry (tire reinforcement) and textile industry for military and fireguard purposes. The problem of the reliable experimental study of tensile behavior of synthetic cords is considered in this paper. In the available standards for synthetic cord testing, particularly ASTM D 885-03, the tensile test must result with the cord damage in the middle of gauge length, and the cords should be fixed in the machine clamps. The trial test gave damage near the clamps. We propose a novel testing stage mounted in the testing machine clamps to achieve the uniform tensile stress distribution in the gauge length of the measured cords. The results of the deformations were measured in two ways: using testing machine head displacement and a videoextensometer. Stress curves of four distinguished cords were evaluated and compared. The second method allowed to acquire results differing from the manufacturers’ data from 0.7% to 21.5%, which allowed for the conclusion that the designed test stand allows for obtaining reliable results for stretched cords.     

脐血和新生儿外周血CD4+CD25+调节性T细胞的表型特征及意义

目的 探讨脐血和新生儿外周血中CD4 CD25 调节性T细胞的表型特征及其意义.方法以18份脐血和9份新生儿外周血为标本,细胞膜表面抗原采用单抗直接标记法,检测胞内抗原(CD152、FoxP3)时先标记膜表面抗原,固定破膜后再标记胞内抗原,应用多参数流式细胞仪进行检测和结果分析.结果脐血和新生儿外周血中的CD4 CD25 T细胞显示为独立的细胞群,脐血中该群细胞占CD4 T细胞比例为(9.26±2.43)%,新生儿外周血中的比例则为(9.35±2.30)%;在表型方面,大部分是CD45RA 的细胞,同时表达CD62L、胞浆内的CD152,也表达FoxP3,CD4 CD25 FoxP3 占CD4 T细胞比例为(1.92±0.28)%.结论 脐血和新生儿外周血中存在着一群单纯且水平较高的CD4 CD25 调节性T细胞,它们可能在发挥对母体非遗传性抗原的耐受及防止母体对胎儿的排斥反应中具有独特的作用.     

父母过敏史对新生儿脐血细胞因子水平的影响

目的：探索父母过敏史对新生儿脐血IgE和嗜酸性粒细胞及细胞因子水平的影响,为新生儿脐血细胞因子的筛查、监测及开展过敏性疾病的早期干预提供参考依据。方法以2012年7-12月就诊于义乌市妇幼保健院的136名孕妇为研究对象,采集新生儿脐血样本,检测IgE、嗜酸性粒细胞、IL-13、Eotaxin、IL-9、IL-6、IL-4、IL-5、IFN-γ和IL-10,比较父母均有过敏史组、父母一方有过敏史组和父母无过敏史组3组间的差异。结果3组人口社会学因素均衡（P＞0.05）。3组新生儿脐血细胞因子中位数水平：IL-13（1.82、3.24和6.12 pg/mL）、Eotaxin （29.33、50.71和60.15 pg/mL）、IL-9（43.75、111.17和183.19 pg/mL）、IL6（11.49、19.35和26.09 pg/mL）、IL4（3.67、21.27和49.51 pg/mL）、IL -5（4.26、7.69和10.66 pg/mL）、IFN -γ（338.65、649.17和834.14 pg/mL）、IL-10（7.13、10.56和14.64 pg/mL）,差异均有统计学意义（P＜0.05）。结论父母的过敏史对新生儿脐血细胞因子水平产生影响,要加强有过敏史父母的新生儿脐血细胞因子的筛查和监测,以利于开展过敏性疾病的早期干预。     

反油酸对人脐静脉平滑肌细胞活力的影响

<正>平滑肌细胞是血管壁中膜的主要细胞成分,是动脉粥样硬化(atherosclerosis,As)和血管成形术后再狭窄(restenosis after angioplasty,RAA)等病理过程形成和发展的重要部位,对血管壁的完整性和紧张性的调节也起重要作用,其异常增殖及形态学转变将导致动脉粥样硬化过程     

计算机波谱分析与喉动态镜观测在研究喉发声功能中的应用

应用IBM微机系统对31名正常人和31名喉疾病患者进行了声波、波谱描记,并与喉动态镜观察结果进行了比较,对声带的7种疾病的特异性进行了研究,认为二者结合可使喉发声功能的研究提高到新水平。     

Role of Vocal Cord Function and Dysfunction in Patients Presenting with Symptoms of Acute Asthma Exacerbation

A total of 48 patients presenting to the emergency department as acute asthma exacerbation were prospectively studied. Rhinolaryngoscopy was conducted with simultaneous flow measurements and spirometry performed before and after the procedure. Measurements of the vocal cord opening during various phases of respiration were analyzed. Only 4 of 48 patients had anterior two-thirds closure of the vocal cords with a diamond-shaped opening posteriorly during expiration. One additional patient had inspiratory and expiratory closure of the vocal cords. The previously unreported high incidence of anterior two-thirds closure (10.4%) of the vocal cords suggests that the upper airway has a role to play in a significant number of patients presenting with symptoms of asthma exacerbation.     

脐带间充质干细胞对创伤后早期急性肺损伤作用的研究

目的：探讨脐带间充质干细胞（UCMSC）对创伤后急性肺损伤（ALI）早期的作用.方法：采用撞击后静脉注射脂多糖的二次打击方法复制创伤后ALI家兔模型.24只家兔随机分为正常对照组（正常饲养）、ALI组（复制ALI模型）和UCMSC组（伤前30 min静脉注射UCMSC 1×106个）,每组8只.各组动物于伤后0、1.5、3和6 h测定血浆TNF-α含量;伤后6 h测定PaO2,支气管肺泡灌洗液（BALF）中TNF-α、补体C3a和C5a、白蛋白含量及中性粒细胞计数,肺湿/干重比值（W/D）,免疫组织化学法观察肺组织中TNF-α蛋白的表达,光镜下观察肺组织病理学变化.结果：与正常对照组比较,ALI组PaO2下降,其余各检测指标均明显升高,镜下见肺泡壁破坏,肺泡腔渗出和出血,肺组织TNF-α表达增强.伤前给予UCMSC能提高ALI动物的PaO2,不同程度降低外周血TNF-α及BALF中TNF-α[（0.72±0.70）μg/L比（1.82±0.60）μg/L]、C3a[（0.28±0.07）μg/L比（0.45±0.03）μg/L]、C5a[（0.08±0.01）μg/L比（0.19±0.03）μg/L]、白蛋白含量[（69.0±9.7）mg/L比（102.0±14.9）mg/L]和中性粒细胞计数[（229.0±21.4）×106/L比（298.0±36.8）×106/L],降低肺W/D,抑制肺组织TNF-α蛋白表达,减轻肺泡的损伤程度.结论：UCMSC能减少ALI时组织及血浆TNF-α的含量,减轻肺泡损伤程度,在一定程度上对早期创伤后急性肺损伤起保护作用.