嗜酸性细胞胃炎中的肥大细胞

目的研究嗜酸性细胞胃炎中的肥大细胞的分布及其意义。方法27例嗜酸性细胞胃炎常规切片．分别做pH6.40.5％甲苯胺蓝染色显示肥大细胞和2％硫染色人细胞异染颗粒，此镜观察。结果：在胃粘膜、粘膜下层及溃疡的肉芽组织中．均可见未释放型和释放型两种肥大细胞分布。不同部位不同类型的肥大细胞，被激活后均参与相应部位的炎性反应、引起粘膜溃疡和肉芽肿形成。结论本病的发生．主要与肥大细胞的分布和激活有着重要的关系。肥大细胞释放的各种介质、虽然双本病的发生起到重要作用，同时也具有一定的抗癌作用，这种病变属于一种迟发性免疫反应性疾病.     

术前全身免疫炎症指数与DEB-TACE治疗肝癌患者预后相关性分析

目的 评估全身免疫炎症指数(systemic immune inflammatory index,SII)对CalliSpheres药物洗脱微球-经导管动脉化疗栓塞术(DEB-TACE)治疗肝癌患者的预测价值.方法 回顾性分析2016年10月至2018年10月四川省人民医院介入科收治肝癌患者65例,均接受CalliSp...     

Thickness-dependent fast wetting transitions due to the atomic layer deposition of zinc oxide on a micro-pillared surface

Smart surfaces promote the fundamental understanding of wetting and are widely used in practical applications for energy and water collection. Light-induced switchable wettability facilitated by ZnO coatings, for instance, was developed for liquid manipulation at the surface. However, the transition of wetting states was reported to follow a hydrophobic–hydrophilic cycle in an hour, which is very long and may limit its future applications. We recently discovered that the cycle of the wetting state transitions on inorganic coatings can be shortened to less than 100 seconds by using ALD-coated ZnO on a pillared surface. However, the mechanisms are still unclear. Here, we investigated the effects of coating thickness on the transition speed and found that it significantly depended on the thickness of the coating with the optimal thickness less than 50 nm. We found that the minimum critical time for a wetting state transition cycle was less than 50 seconds with a thickness of 40 nm. Although the transition time of surfaces with coatings over 70 nm thickness remained constant at 10 min for a cycle, it was shorter than those of other deposition techniques for a coarse surface. Here, we propose a “penetration–diffusion” model to explain the fast and thickness-dependent wetting transitions. Our study may provide a new paradigm for fast wetting transition surfaces with cycle time within tens of seconds using a homogeneous thin layer coated on a rough surface.

Smart surfaces promote the fundamental understanding of wetting and are widely used in practical applications for energy and water collection.     

经颈静脉肝内门体分流术前外周血炎症指标对术后肝性脑病的预测价值

【摘要】 目的 探讨基于全身炎性反应相关血液指标评分系统预测经颈静脉肝内门体分流术（TIPS）后肝性脑病（HE）的价值。方法 回顾性分析2015年2月至2019年12月在四川省人民医院接受TIPS治疗的106例肝硬化患者临床资料。将TIPS术前患者超敏C反应蛋白（hsCRP）、中性粒细胞/淋巴细胞比值（NLR）、血小板/淋巴细胞比值（PLR）、全身免疫- 炎性指数（SII）、改良Glasgow预后评分（mGPS）纳入单因素分析,获取有统计学意义的变量及临床认为与HE发生密切相关的变量后,进行二元logistic回归多因素分析。结果 多因素分析结果显示,hsCRP（P=0.025）、门静脉压力梯度下降百分比（PPG%）（P=0.022）与TIPS术后HE密切相关。NLR、PLR、SII、mGPS与TIPS术后HE均无显著相关性（P＞0.05）。联合hsCRP与PPG%构建的预测模型曲线下面积（AUC）为0.723。 结论 除PPG%外,hsCRP是TIPS术后HE的独立危险因素。     

中心组合设计-效应面法优化曲安奈德固体脂质纳米粒处方

目的采用中心组合设计-效应面法优化曲安奈德固体脂质纳米粒(TACA-SLN)的处方。方法采用中心组合设计-效应面优化法筛选处方,以曲安奈德包封率作为评价指标,考察泊洛沙姆188的浓度,单硬脂酸甘油酯和大豆卵磷脂的质量比,药物和脂质材料的质量比,水相和有机相的体积比对评价指标的影响。采用高温乳化-低温固化法制备TACA-SLN。结果优选的最佳处方为:泊洛沙姆188浓度1.89%,单硬脂酸甘油酯与大豆卵磷脂质量比1.95,药物与脂质质量比0.15,水相与油相体积比5.68,实验值与理论值偏差0.07%。结论中心组合设计-效应面法能有效优选TACA-SLN处方。     

广西长寿老人高敏C反应蛋白与代谢综合征的相关性

目的 基于广西自然长寿队列,分析长寿老人血清高敏C反应蛋白(hs-CRP)水平与代谢综合征(MS)及其相关代谢性疾病的相关性。方法 2019年7月至11月,选择广西东兴市和上林县265例90岁及以上长寿老人为研究对象,逐户采集一般人口学指标、身高、体质量、腰围、血压、空腹血糖、血脂和hs-CRP等数据。根据研究对象是否患有MS将其分为MS组(68例)和非MS组(197例);根据研究对象hs-CRP水平将患者分为hs-CRP≥3 mg/L组(160例)和hs-CRP<3 mg/L组(105例)。采用SPSS 21.0统计软件进行数据分析。根据数据类型,分别采用t检验、Mann-Whitney U检验、χ²检验或Fisher精确检验进行组间比较。采用多因素logistic回归分析hs-CRP与MS及其相关代谢性疾病的关系。结果 MS组hs-CRP水平显著高于非MS组,差异有统计学意义(P<0.05)。hs-CRP≥3 mg/L的长寿老人高低密度脂蛋白胆固醇(LDL-C)血症、血脂异常和MS患病率显著高于非MS组(P<0.05);高血压患病率显著低于非...     

A novel photothermo-responsive nanocarrier for the controlled release of low-volatile fragrances

We herein present a facile approach to create polydopamine (PDA) modified silica-based nanocarriers for use in the encapsulation and photothermally responsive release of the synthetic sandalwood odorant Sandalore (SA) as a low-volatile model fragrance. The method involves impregnating mesoporous silica nanoparticles with an ethanol solution of SA followed by surface functionalization via the in situ self-polymerization of dopamine under alkaline conditions. The resulted nanocomposites have high fragrance loading capacity with up to ∼85% by weight of SA relative to the silica matrix and are capable of effectively preserving the cargo in the dark or indoors. The aroma release was significantly accelerated upon illumination due to the photothermal heating effect of the PDA shell, which is proportional to the coating content and the irradiation intensity. Additionally, the emulated laundry tests showed that the composites exhibited a higher deposition efficiency on the fabric surface and better washing-resistance as compared to the control particles without PDA coating.

Polydopamine-modified nanocarriers were constructed for use in the encapsulation and photothermo-responsive release of the low-volatile synthetic odorant Sandalore.     

盐酸小檗碱的溶解度及油水分配系数与大鼠在体肠吸收之间的相关性研究

目的 测定盐酸小檗碱(BH)的平衡溶解度和油水分配系数,并研究BH的大鼠肠吸收机制。方法 采用摇瓶-紫外分光光度法测定平衡溶解度及油水分配系数;分别采用酚红法和重量法校正灌流液体积,研究BH 3个剂量组(50,100,150 μg·mL^-1)在大鼠不同肠段的吸收情况。采用HPLC对灌流前后BH、酚红含量进行测定。结果 BH溶解度随pH值的增加而增加,油水分配系数则相反;酚红法较重量法能更好的减少实验误差,BH在低、中、高3个浓度下,各肠段的有效渗透系数(P_eff)有上升趋势,且高浓度与低浓度相比,P_eff均有统计学差异(P<0.05);高、中浓度时,BH在空肠吸收较好;低浓度时,BH在十二指肠吸收较好。结论 在实验浓度范围内, 油水分配系数的预测结果与实际肠吸收结果基本一致;BH在肠道上端比下端吸收更好,延长药物在肠道上段的吸收时间,可达到提高生物利用度的目的。