芦荟大黄素抑制胃癌细胞生长与细胞周期阻滞的关系

目的 探讨芦荟大黄素抑制胃癌细胞生长与细胞周期阻滞的关系.方法 人胃癌SGC-7901细胞用2.5、5、10、20、40 μmol/L芦荟大黄素处理1～5 d.分别用MTT方法和流式细胞术检测细胞增殖情况和细胞周期的变化,然后用Western blotting方法检测细胞周期相关调控蛋白周期蛋白(cyclin)和周期蛋白依赖性激酶(cyclindependent kinase,CDK)的变化.结果 芦荟大黄素以剂量依赖方法抑制胃癌细胞的生长;芦荟大黄素引起细胞阻滞在G2/M期;其分子机制为引起cyclin A和CDK2的表达水平下降、cyclinBl和CDKl的表达水平上升.结论 芦荟大黄素抑制胃癌细胞生长的机制之一是阻滞细胞周期,说明芦荟大黄素在胃癌治疗方面有潜在的临床价值.     

肩后入路内固定治疗不稳定性肩胛骨骨折

目的：探讨不稳定性肩胛骨系列骨折的手术适应证与开放复位内固定的治疗效果。方法：22例肩胛骨骨折，男18例，女4例，年龄25～65岁，平均35．5岁。根据术前X线片与CT扫描对骨折进行分型，确定手术指征，经肩后入路行切开复位，采用重建钢板、微型钢板、拉力螺钉内固定，术后早期功能锻炼。结果：22例均获9～28个月随访，平均17．5个月，疗效优14例，良5例，可2例，差1例，优良率86．4％。所有骨折平均在术后8．5周骨性愈合。结论：对不稳定性肩胛骨骨折行开放复位内固定、早期功能锻炼可恢复较好的肩关节功能。     

Clinical significance of endothelial vasodilatory function evaluated by EndoPAT in patients with systemic sclerosis

Endothelial dysfunction is a hallmark of vasculopathy associated with systemic sclerosis (SSc). Reactive hyperemia peripheral arterial tonometry is a rapid and non-invasive technique to assess peripheral microvascular endothelial function by measuring changes in digital pulse volume during reactive hyperemia. Low scores of the reactive hyperemia index (RHI) imply an impaired vasodilatory response and, accordingly, impaired endothelial and vascular health. To investigate the clinical significance of the RHI in SSc patients, RHI values were measured in 43 SSc patients and 10 healthy controls. In diffuse cutaneous SSc (dcSSc) patients, RHI values were significantly decreased compared with healthy controls, and inversely correlated with disease duration. In total SSc patients, there was a significant inverse correlation between RHI values and skin score, and interstitial lung disease was associated with the decrease in RHI values. Among vascular symptoms, the current and past history of digital ulcers was seen more frequently in patients with decreased RHI values than in those with normal RHI values. Although no SSc patients had pulmonary arterial hypertension, an inverse correlation was evident between RHI values and mean pulmonary arterial pressure measured by right heart catheterization. These results indicate that the decrease in RHI values is associated with skin fibrosis, interstitial lung disease, digital ulcers and pulmonary vascular involvement leading to pulmonary arterial hypertension, supporting the canonical idea that endothelial dysfunction is a critical event underlying the development of tissue fibrosis and vascular complications in SSc.     

灵芝孢子滴眼液对辐射性兔眼防护作用的研究

目的：探讨灵芝孢子滴眼液对兔眼辐射性损伤的作用和房水中相关酶活性的影响。方法：将破壁灵芝孢子制剂成滴眼液。选取黑眼睛健康獭兔30只随机分成5组，每组6只。1组为空白对照组；另4组采取每日2次紫外线辐射，每次辐射40min，其中3组为高、中、低浓度灵芝孢子滴眼液试验组，每日滴眼药3次；1组不用药为辐射模型组。试验60d。分别检测兔眼房水中超氧化物歧化酶（SOD）、谷胱甘肽过氧化物酶（GSH—Px）的活性和丙二醛（MDA）的含量；在光学显微镜下观察兔眼角膜结构的变化及细胞分布情况。结果：辐射滴眼药组兔眼房水中SOD和GSH．Px活性较辐射模型组明显升高，MDA含量明显降低，角膜组织结构紧密连续且形态完整。结论：灵芝孢子滴跟液对辐射性兔眼具有保护作用。     

补阳还五汤高压煎药机煎煮工艺优选

目的:考察高压煎药机不同煎煮条件对补阳还五汤剂质量的影响,确定最佳煎煮工艺.方法:采用正交试验法对煎煮加水量、浸泡时间、煎煮时间及煎煮温度进行考察,以总固体、阿魏酸及黄芪甲苷含量为考核指标.HPLC测定阿魏酸及黄芪甲苷含量.结果:正交试验方差分析表明,各因素影响顺序为加水量＞温度＞浸泡时间＞煎煮时间,4个因素对提取工艺均无显著性影响.补阳还五汤的最佳煎煮工艺为药材饮片加12倍量水浸泡30 min,煎煮60 min,煎煮温度120℃.结论:该优选工艺及技术参数为高压煎药机制备黄芪甲苷及阿魏酸类为主要成分的中药汤剂提供了理论依据.     

血管内皮细胞生长因子在斑秃皮损中的表达

血管内皮细胞生长因子（vasculaqr endothelial cell growth factor,VEGF)是一种特殊作用于血管内皮细胞的丝裂原，在体内能诱导血管形成。为探讨VEGF为斑秃的关系，应用免疫组化的方法检测了VEGF在30例斑秃皮损中的表达和分布，以16例正常人头皮为对照。结果表明斑秃皮损中VEGF的表达明显低于正常对照。提示VEGF的表达下调可能与斑秃的发病有关。     

多模式镇痛对子宫切除术后疼痛及T淋巴细胞亚群的影响

目的观察多模式镇痛用于子宫切除术后镇痛的临床效果及对T淋巴细胞亚群的影响。方法 60例ASAⅠ~Ⅱ级择期在腰硬联合麻醉下行子宫切除患者,将患者随机分为观察组和对照组,观察组应用帕瑞昔布钠复合舒芬太尼术后镇痛,对照组应用舒芬太尼术后镇痛。记录两组术后VAS评分及各个时间点抽取外周静脉血检测T淋巴细胞亚群含量。结果与T0相比较,两组T1、T2、T3、T4的CD3+、CD4+含量下降(P0.05),CD8+含量升高(P0.05);与对照组相比较,观察组T2、T3、T4的CD3+、CD4+含量升高(P0.05),CD8+含量降低(P0.05)。结论多模式镇痛对于子宫切除患者镇痛效果显著,并可以保护T淋巴细胞功能从而减轻免疫抑制。     

Impact of Triggering Events on Outcomes of Acute Heart Failure

Background

The onset of acute heart failure is known to be associated with increased physical activity and other specific behaviors that can trigger hemodynamic deterioration. This analysis aimed to describe the distribution of triggers in patients hospitalized for acute heart failure, and investigate their effects on in-hospital outcomes.

Isolation of measles virus from middle ear fluid of infants with acute otitis media

Measles virus was isolated from the middle ear fluid (MEF) of two infant cases of acute otitis media (AOM) associated with measles. This is the first report on the isolation of measles virus from the MEF in patients with AOM, and possibility of the measles virus as a causative agent of AOM was suggested.