克银合剂治疗血热型白疕疗效及对肿瘤坏死因子-α的影响

目的 研究克银合剂治疗血热型白疕(寻常型银屑病)疗效及对肿瘤坏死因子-α(TNF-α)的影响.方法 选取30例寻常型银屑病血热型患者作为研究对象,进行克银合剂治疗,另选取同期接受健康体检的健康人30例作为对照组,研究克银合剂对TNF-α的影响.结果 治疗前TNF-α水平显著高于健康对照组,进行克银合剂治疗后患者症状、体征评分均显著低于治疗前,各项指标水平已经接近对照组.结论 克银合剂能改善寻常型银屑病血热型患者的临床症状,对TNF-α异常也有一定的改善作用.     

银僵合剂治疗坏死性淋巴结炎

目的 观察3型坏死性淋巴结炎患者的临床表现以及银僵合剂对3型坏死性淋巴结炎的疗效.方法 根据病理分型将坏死性淋巴结炎患者分为3组:增生(PT)组29例、坏死(NT)组30例、黄色瘤型(XT)组28例,均给予银僵合剂内服加外熏.观察3组临床表现及治疗前后中医证候积分的变化.结果 PT、NT组中医证候积分明显高于XT组(P＜0.05).3组总有效率及复发率分别为PT组96.55％、3.60％;NT组96.66％、3.44％;XT组89.28％、4.00％,PT组与NT组比较无统计学意义(P＞0.05),与XT组比较有统计学意义(P＜0.01).结论 3组临床表现存在差异;银僵合剂在PT、MT2组中的疗效优于XT组.     

通腑化瘀汤对术后肠梗阻大鼠小肠动力及IL-6、IL-10的影响

[目的] 研究通腑化瘀汤对术后肠梗阻(POI)模型大鼠小肠动力及血清白介素(IL)-6、IL-10的影响,探讨中药对促进POI胃肠功能恢复的作用。[方法] 实验动物按体质量随机分为空白组、对照组和药物组,手术建立大鼠POI模型。药物组给予通腑化瘀汤灌胃,对照组给予等量的生理盐水,空白组不予干预。术后24 h测定各指标。[结果] 与空白组相比,对照组的小肠推进率显著降低,血清IL-6水平显著升高,血清IL-10也升高(P<0.05);与对照组相比,药物组的小肠推进率显著升高,血清IL-6水平显著降低,血清IL-10显著升高(P<0.05);且小肠推进率与血清IL-6浓度呈负相关,与血清IL-10浓度呈正相关。药物组肠黏膜的病理评分也低于对照组(P<0.05)。[结论] 通腑化瘀汤可改善小肠动力,降低促炎因子IL-6同时提高抗炎因子IL-10的表达,从而缓解POI,保护胃肠功能。     

Using big data from probabilistic genotyping to solve crime

Forensic Science South Australia (FSSA) has been using STRmix™ software to deconvolute all reported DNA mixtures since 2012. Almost a decade of deconvolutions had led to a substantial repository of analysed profile data that can be interrogated to observe trends in case type, location or occurrence. In addition, deconvolutions can be compared in order to identify common DNA donors and reveal new intelligence information in cases where DNA profiling has previously provided no investigative information. As a proof of concept all samples deconvoluted as part of criminal casework (suspect or no-suspect) were interrogated and compared to each other using the mixture-to-mixture comparison feature in STRmix™. Within the Adelaide region there were 32 groups of cases that had evidence samples linked by a common DNA donor with LR > 1 million which was in addition to direct links and mixture searching links identified previously. These groups of cases can then be interrogated to reveal additional information to inform Police intelligence gathering. Our paper reports on the findings of this proof-of-concept study.     

壮精合剂对初老大鼠行为学及脑单胺类神经递质的影响

目的：观察壮精合剂对初老大鼠行为学及脑单胺类神经递质的影响,探讨其抗衰老的作用机制。方法选用12月龄,体质量（300±20）g。雌性初老大鼠50只,建立模型,分为5组：空白对照组、壮精合剂高剂量组、壮精合剂中剂量组、壮精合剂组低剂量组、阳性对照组,每组10只。各组分别灌胃相应药物8周后,采用Morris水迷宫检测各组大鼠的空间学习记忆行为能力及采用高效液相色谱‐荧光检测法检测各组大鼠大脑皮层、海马单胺类神经递质含量。结果与空白对照组比较,壮精合剂高、中剂量组及阳性对照组均能使初老大鼠学习记忆能力有所改善,并能提高其大脑皮层及海马区单胺类经递质含量。壮精合剂高剂量组与阳性对照组比较在改善学习记忆能力方面差异有统计学意义（P＜0．05）,在提高大脑皮层及海马区单胺类经递质含量方面效果最为显著（P＜0．05）。结论壮精合剂能有效改善初老大鼠的学习记忆能力,其作用机制可能与调节大脑内单胺类神经递质有关。     

Power calculations for delta‐adjusted pattern‐mixture models

Pattern‐mixture models provide a general and flexible framework for sensitivity analyses of nonignorable missing data in longitudinal studies. The delta‐adjusted pattern‐mixture models handle missing data in a clinically interpretable manner and have been used as sensitivity analyses addressing the effectiveness hypothesis, while a likelihood‐based approach that assumes data are missing at random is often used as the primary analysis addressing the efficacy hypothesis. We describe a method for power calculations for delta‐adjusted pattern‐mixture model sensitivity analyses in confirmatory clinical trials. To apply the method, we only need to specify the pattern probabilities at postbaseline time points, the expected treatment differences at postbaseline time points, the conditional covariance matrix of postbaseline measurements given the baseline measurement, and the delta‐adjustment method for the pattern‐mixture model. We use an example to illustrate and compare various delta‐adjusted pattern‐mixture models and use simulations to confirm the analytic results. Copyright © 2014 John Wiley & Sons, Ltd.     

A random pattern mixture model for ordinal outcomes with informative dropouts

We extend a random pattern mixture joint model for longitudinal ordinal outcomes and informative dropouts. The patients are generalized to ‘pattern’ groups based on known covariates that are potentially surrogated for the severity of the underlying condition. The random pattern effects are defined as the latent effects linking the dropout process and the ordinal longitudinal outcome. Conditional on the random pattern effects, the longitudinal outcome and the dropout times are assumed independent. Estimates are obtained via the Expectation–maximization algorithm. We applied the model to the end‐stage renal disease data. Anemia was found to be significantly affected by the baseline iron treatment when the dropout information was adjusted via the study model; as opposed to an independent or shared parameter model. Simulations were performed to evaluate the performance of the random pattern mixture model under various assumptions. Copyright © 2015 John Wiley & Sons, Ltd.     

Treatment of isolated fat cells with trypsin inhibits the effects of insulin on incorporation of leucine into protein

Summary Incorporation of 0.1 mM³H-leucine into protein by isolated fat cells, with pyruvate as the only extracellular carbohydrate, was stimulated by: a) insulin, 0.1–4 ng/ml, or b) a mixture of 19 amino acids, 0.05–5 mM. Treatment of fat cells with trypsin, under conditions known to reduce binding of insulin by their plasma membranes, abolished stimulation of incorporation by the hormone but not by the amino acid mixture. These results imply that the actions of insulin on incorporation of amino acids into protein are initiated by interaction with plasma membranes.A preliminary report of this work was presented on June 22, 1972, at the IVth International Congress of Endocrinology, Washington, D.C. (abstract No. 423).     

胃舒合剂对大鼠乙酸实验性胃溃疡的保护作用及其机理探讨

本实验发现大鼠乙酸实验性胃溃疡模型，存在着血液流变学的异常和自由基反应的失衡，其全血比粘度及全血还原粘度高于正常组（Ｐ＜０．０１），血浆超氧阴离子、红细胞超氧阴离子，血过氧化脂质（ＬＰＯ）也明显高于正常组（Ｐ＜０．０１），血过氧化物歧化酶（ＳＯＤ）则低于正常组（Ｐ＜０．０１）。中药胃舒合剂可明显地改善大鼠血液流变学的异常及氧自由基的失衡，对乙酸所致的大鼠实验性胃溃疡有显著的保护作用，且其作用优于三九胃泰（Ｐ＜０．０１）。     

不同采收期紫丁香叶中原儿茶酸、原儿茶醛和酪醇的含量测定

目的测定不同采收期紫丁香叶中原儿茶酸、原儿茶醛、酪醇的含量。方法采用RP-HPLC直接测定。YWG-C18色谱柱（4.6mm×250mm,10μm）;流动相为甲醇-0.125%冰醋酸溶液（10︰90）,流速1.0mL·min^-1;检测波长275nm。结果原儿茶酸在0.08～0.56μg内呈良好线性,回归方程为Y=83995X-10368,r=0.9995;原儿茶醛在0.01～0.07μg内呈良好线性,回归方程为Y=111202X-35323,r=0.9998;酪醇在0.42～2.94μg内呈良好线性,回归方程为Y=139922X-32003,r=0.9996。紫丁香叶中原儿茶酸的含量10月份最高,原儿茶醛和酪醇的含量4月份最高。结论该方法简便、快速、准确可靠,适用于紫丁香叶中原儿茶酸、原儿茶醛、酪醇多种成分的同时测定;适用于紫丁香叶的质量控制。结果表明紫丁香叶以10月份或4～5月份采收为宜。