内镜下金属钛夹对比药物治疗上消化道出血疗效的Meta分析

目的评价内镜下金属钛夹治疗上消化道出血的临床价值。方法通过计算机检索Pubmed、CNKI数据库、Web of Knowledge、Cochrane图书馆对照试验注册库、万方数据库从建库至2017年的有关内镜下金属钛夹对比药物注射治疗上消化道出血的相关文献,采用Cochrane协作网提供的RevMan 5.0版软件进行统计处理,对纳入资料的异质性进行分析,计算OR值和95%可信区间。结果按照入选标准,纳入了7项临床试验,共704例患者。Meta分析结果显示,钛夹治疗上消化道出血有效率更高(OR=5.74,95%CI:3.28~10.04)、72 h再出血率低(OR=0.24,95%CI:0.14~0.43)、转外科手术率低(OR=0.14,95%CI:0.05~0.37)。结论目前的研究结果显示,内镜下金属钛夹治疗上消化道出血的疗效优于单纯采用药物治疗,且该方法具有止血有效率高、72 h再出血率低和转外科手术率低等优点,具有临床推广及应用价值。     

Preparation and characterization of chitosan membranes

The present study investigates a new solvent system for the dissolution of chitosan and a new method for preparing chitosan membranes. First, aqueous tartaric acid was used to pretreat chitosan. Then, the chitosan was precipitated with ethanol or other regenerating agents, and 1.5 mL of 1-ethyl-3-methylimidazolium acetate ([EMIM]AC) was added to obtain translucent suspensions. The chitosan membranes were prepared by casting the suspensions on glass plates and allowing solvent evaporation. The structure and properties of the films were investigated by SEM, FT-IR, XRD and TGA. Also, the mechanical properties, as well as physical and chemical characteristics, of the chitosan films were evaluated. The results indicated that the optimum dissolution time was 10 min and the most suitable drying temperature was 60 °C. The thus-prepared film was moderately thick (about 0.02 mm) and had a smooth surface, without curling. The chitosan film prepared by ethanol regeneration had a tensile strength of up to 24 MPa, a minimum swelling degree of 78%, and a water vapor transmission rate of 270 g m⁻² d⁻¹ without the addition of plasticizer.

The present study investigates a new method for preparing chitosan membranes. The thus-prepared film was moderately thick and had a smooth surface, without curling.     

Prediction of 1H NMR chemical shifts for ionic liquids: strategy and application of a relative reference standard

The computational predictions of ¹H NMR chemical shifts for ionic liquids were investigated. To calculate the chemical shifts more accurately, the approach of relative reference standard (RRS) was proposed. This straightforward computational technique uses organic compounds and ionic liquids that are similar to the studied ionic liquids as standards. The calculated chemical shifts of single ion pairs were strongly influenced by the anion type and the local environment. Using the RRS methodology, the calculated results agreed well with the experimental chemical shifts due to the cancellation of errors caused by the anion. Ionic clusters consisting of 4 ion pairs were also employed to model the ionic liquids with strongly coordinating anions. Large clusters slightly improve the accuracy by reducing systematic errors. Although the experimental ¹H NMR data of the reference ionic liquid should be used, the RRS methodology has been shown to predict ¹H NMR chemical shifts efficiently at different levels of theory.

Using an RRS method to calculate the ¹H NMR chemical shifts of ionic liquid agreed well with the experimental value.     

尿毒清对尿毒症血液透析患者钙磷代谢及甲状旁腺激素的影响

目的：观察尿毒清对尿毒症血液透析患者钙磷代谢及甲状旁腺激素（PTH）的影响。方法选取2012年1月至2014年1月医院肾内科收治的行血液透析维持治疗的尿毒症患者66例,按随机双盲对照法将患者分为治疗组和对照组,各33例。治疗组患者在进行常规的血液透析的同时给予尿毒清口服治疗,对照组患者仅给予血液透析治疗。结果两组患者血磷、PTH浓度治疗后均明显高于治疗前（ P＜0.05）,治疗组下降更明显（ P＜0.05）。结论尿毒症患者在血液透析治疗的基础上加用尿毒清,能明显提高治疗效果,值得临床推广。     

mmp-14和CD34在青年乳腺癌演变过程中的表达及意义

目的：研究基质金属蛋白酶14（mmp-14）与CD34在≤35岁乳腺癌、乳腺良性肿瘤、乳腺增生症及乳腺癌旁组织患者中的表达及临床意义。方法采用免疫组织化学方法对30例乳腺癌、30例乳腺良性肿瘤、30例乳腺增生症及30例癌旁组织中乳腺终末导管及腺泡上皮细胞患者的mmp-14表达情况及CD34标记的间质血管数目进行检测。结果 mmp-14在4组导管及腺泡上皮细胞中的表达情况：乳腺癌组mmp-14高表达,与其他3组两两比较差异具统计学意义（P＜0.05）。CD34在4组中标记间质血管数目的情况：乳腺增生症组和乳腺癌组血管增生数目均高于良性肿瘤组,差异有统计学意义（P＜0.05）。结论乳腺终末导管及腺泡上皮细胞mmp-14的高表达和CD34标记的间质血管数目增加与青年乳腺癌的演变过程密切相关,有望成为青年乳腺癌早期诊断和治疗可靠的临床指标。     

联合检测ADA、CA125和CEA对结核性与恶性胸腔积液的诊断价值

目的 探讨联合检测胸腔积液中腺苷脱氨酶(ADA)、糖类抗原125(CA125)和癌胚抗原(CEA)对结核性与恶性积液的鉴别诊断价值.方法 采用酶连续监测法和化学发光免疫分析法检测82例结核性积液及56例恶性胸腔积液中ADA、CA125和CEA的水平,并对检测结果进行综合分析.结果 结核性胸腔积液中平均ADA含量明显高于恶性胸腔积液,而CEA和CA125平均水平明显低于恶性胸腔积液(P＜O.05).以ADA＞40U/L为临界值,对结核性积液的敏感性、特异性和准确性分别为82.8％,80.4％和81.7％.以CA125＞35U/ml和CEA＞5μg/L为临界值,对恶性积液诊断的敏感性分别为82.6％和71.7％,特异性分别为58.8％和82.8％,准确性分别为65.4％和76.0％;联合检测CA125和CEA诊断恶性胸腔积液的敏感性和准确性分别为93.5％和81.7％,显著高于单一检测项目(P＜O.05).结论 联合检测胸腔积液中ADA、CEA和CA125对早期鉴别诊断结核性与恶性胸水的有重要参考价值.     

术后心理干预对卵巢癌患者负面情绪及生活质量的影响

目的 分析术后心理干预对卵巢癌患者负面情绪及生活质量的影响.方法 选择在本院接受手术治疗的卵巢癌患者作为研究对象,随机分为接受常规术后护理的对照组和接受针对性术后心理干预的观察组,比较两组患者的负面情绪、应激水平及生活质量评分差异.结果 (1)观察组患者接受针对性术后心理干预后的焦虑及抑郁评分均明显低于对照组患者(P＜0.05);(2)观察组患者接受术后心理干预后的GIU、E、NE、COI水平均明显低于对照组患者(P＜0.05);(3)观察组患者接受针对性术后心理干预后的各项生活质量评分值均明显低于对照组患者(P＜0.05).结论 卵巢癌患者术后进行针对性心理干预可以有效缓解患者不良情绪状态,缓解全身应激水平,最终提升术后生活质量,具有积极的临床意义.     

归芍地黄丸中山茱萸的定性定量方法研究

摘 要 目的： 建立归芍地黄丸中山茱萸的定性和定量测定方法。方法: 采用TLC对归芍地黄丸中山茱萸进行定性鉴别,并采用HPLC测定山茱萸中莫诺苷、 马钱苷的含量。结果: TLC色谱斑点清晰,分离度好,专属性强;莫诺苷对照品在0.010～2.620 μg范围内线性关系良好（r=0.999 9）,平均回收率为102.75％,RSD为1.40％（n=6）。马钱苷对照品在0.009～2.170 μg范围内线性关系良好（r=0.999 9）,平均回收率为103.59%,RSD为1.10%（n=6）。结论:本方法准确、简单、可行,重复性好,可有效控制该制剂中山茱萸的质量。     

药用植物蓝刺头的研究进展

摘 要 蓝刺头（Echinops latifolius Tausch）为菊科蓝刺头属植物,其干燥根作为中药禹州漏芦用,其干燥花絮作为蒙药蓝刺头用。本文对近几年来中药禹州漏芦和蒙药蓝刺头的研究成果进行了整理,并从化学成分、工艺研究、质量控制和药理作用四个方面对两种药材进行了比较和综述,以期为药用植物蓝刺头的进一步开发和利用提供科学依据。     

加校正因子的自身对照法测定淫羊藿饮片中6种成分含量

摘 要 目的： 采用加校正因子的自身对照法测定淫羊藿饮片中6种成分含量。方法: Agilent ZORBAX Eclipse XDB-C₁₈(150 mm×4.6 mm,5 μm)色谱柱,流动相为乙腈 水梯度洗脱,检测波长268 nm,柱温30℃。通过加入自身内标物色谱峰峰面积增加值建立校正因子,用相对保留时间和光谱对照法确定其他成分位置,采用HPLC色谱法对其他成分进行定量分析。结果:淫羊藿饮片中朝藿定A、朝藿定A1、朝藿定B、朝藿定C、宝藿苷Ｉ相对于淫羊藿苷的保留时间分别为0.750,0.810,0.865,0.939,1.651;校正因子分别为0.998 6,0.998 7,0.998 8,0.989 4,0.985 6。结论: 加校正因子的自身对照法可以用于相同类型化学环境成分的定量测定,该方法简便、快捷,适合中药多成分的定量分析。