PI3K抑制剂ZSTK-474对结直肠癌细胞增殖和侵袭的影响

目的:探讨PI3K抑制剂ZSTK-474对结直肠癌细胞增殖和侵袭的影响。方法:采用不同浓度（0、1、2、4、6、8和10 μmol/L）ZSTK-474处理结直肠癌HT-29和HCT-116细胞24 h和48 h，CCK8法检测细胞增殖活性并计算出ZSTK-474在两株结直肠癌细胞中的半数抑制浓度（IC50）。根据IC50的值选用浓度为4 μmol/L的ZSTK-474作用HT-29和HCT-116细胞24 h，同时设置加入等量的0.1%DMSO为对照。采用平板克隆形成实验检测细胞增殖，流式细胞仪检测细胞凋亡，qRT-PCR检测细胞PI3K、Akt的mRNA水平，Western blot 检测细胞PI3K、Akt的蛋白水平。结果:ZSTK-474可明显抑制HT-29和HCT-116细胞的增殖，且呈时间和剂量依赖性。ZSTK-474可抑制HT-29和HCT-116细胞的侵袭能力，但不影响其凋亡。ZSTK-474处理HT-29和HCT-116细胞24 h后，PI3K和Akt的mRNA和蛋白表达水平均显著下降。结论:ZSTK-474能够抑制结直肠癌细胞增殖，并且能抑制其侵袭。     

植入物乳房重建一步法和二步法临床对比研究

目的:探讨即刻乳房假体重建（一步法）和应用扩张器的假体重建（二步法）两种不同手术方式在术后并发症、美容效果和成本效益的差异。方法:回顾性分析我院乳腺外科2015年5月至2018年5月收治的285例乳腺癌植入物重建患者，依据手术方式不同分为一步法组（145例）和二步法组（140例），比较两组患者临床资料的差异。结果:一步法组术后出血发生率（6.8%）高于二步法组（1.4%），差异有统计学意义（P=0.021）。一步法组术后伤口皮瓣坏死率（6.2%）高于二步法组（1.4%），差异有统计学意义（P=0.036）。二步法组乳房满意度评分（81.5±7.1）分高于1步法组（78.6±6.2）分，差异有统计学意义（P=0.035）。二步法组住院总花费（80 334.8±6 149.8）元高于一步法组（60 966.5±5 544.9）元，差异有统计学意义（P=0.049）。二步法组住院天数（34.3±3.2）天多于一步法组（17.5±3.9）天，差异有统计学意义（P=0.014）。结论:在植入物乳房重建两种手术方式中，二步法相较于一步法，其并发症少，美容效果好，但在成本效益上并不优于一步法。     

Endothelial function,regulation of angiogenesis and embryonic central hemodynamics in ART-conceived pregnancies

Abstract

This study was undertaken to compare the concentrations of pro- and anti-angiogenic growth factors, nitric oxide (NO) stable metabolites in maternal serum and embryonic left ventricular (LV) isovolumic relaxation time (IRT, ms) during the first trimester in two groups of women: with pregnancy conceived by assisted reproductive technologies (ART, n?=?39) and normally conceived (control group, n?=?68) pregnancy. The concentration of vasoconstrictor endothelin 1 was 45.5 times more in ART than in control group. On the contrary, the concentrations of NO stable metabolites in ART were 1.9 times less than in control women. The assessment of angiogenic suppressors in ART women demonstrates the decrease in s-endoglin concentration was 1.6 times and in soluble receptor to vascular endothelial growth factor concentration was 2.0 times in comparison with control group. There was a significant increase in LV IRT in ART embryos in comparison to control ones. These data suggest significant changes in pro- anti-angiogenic factors balance and increase in vascular impedance in ART-conceived embryos.     

加强型鼻咽通气道应用于鼻腔手术后气道管理临床研究

目的研制加强型鼻咽通气道应用于五官科鼻腔手术后的气道管理。方法选取2014年1月至2015年3月行五官科鼻腔手术的患者60例,将其分为A组和B组,各30例。A组作为加强型鼻咽通气道组,术毕在膨胀止血海绵中放置加强型鼻咽通气道保留鼻腔通气;B组作为对照组,术毕采用传统单纯填塞膨胀止血海绵。通过术后24、48 h随访,对两组患者进行疼痛、睡眠质量、口干程度评分,并对其进行对比分析。结果加强型鼻咽通气道具有良好的抗压抗折性;A组患者24、48 h睡眠质量、口干程度评分均明显优于B组,差异均有统计学意义(P<0.05)。结论加强型鼻咽通气道用于五官科鼻腔手术后气道管理可增强气道管理安全性及患者舒适度。     

The Presence of Portal Vein Thrombosis Alters the Classic Enhancement Associated with Diagnosis of Hepatocellular Carcinoma

Digestive Diseases and Sciences - To determine whether the presence of portal vein thrombosis (PVT) where venous flow within the liver may be altered may delay the diagnosis of HCC and be...