苦针汤的组方研究

目的：对苗药苦针汤进行组方基础研究和新药开发研究。方法：以该方对金黄色葡萄球菌、痢疾杆菌、白色葡萄球菌、致病性大肠杆菌（1）的抑制作用为考察指标，运用混料均匀设计法将组成苦针汤中的4味药配制成12种不同比例的复方，通过抗菌实验，测试用药抗菌能力。结果：建立回归方程．对回归方程及其中各项系数进行检验，求抗菌效果最佳时的变量取值。结论：回归方程通过检验，有意义、可用；苦参、黄芩对抑菌效果的贡献不显著，其余两味药以19．56g和11．84g组方时抗菌效果最佳，优于理论计算值。     

传统综合训练与智能化多维视觉训练对屈光不正性弱视的疗效对比及其影响因素研究

目的　研究传统综合训练与智能化多维视觉训练治疗屈光不正性儿童弱视的疗效差异以及相关影响因素。方法　选取２０１０年７月至２０１２年９月在我院眼科治疗的弱视儿童患者２００例,根据治疗方法的不同分为观察组（智能化多维视觉训练组,１００例）和对照组（传统综合训练治疗组,１００例）,分别给予智能化多维视觉训练和传统综合训练治疗,比较两组患儿的疗效及相关影响因素。结果　观察组治愈７０例,进步２７例,无效３例;对照组治愈３５例,进步４５例,无效２０例;观察组患儿的疗效显著优于对照组,差异有显著统计学意义（χ２＝２８．７３,Ｐ＜０．０１）。在远视患儿中,观察组的疗效显著优于对照组,差异有显著统计学意义（χ２＝１１．４３,Ｐ＜０．０１）,而２组近视和散光患儿疗效差异均无统计学意义（χ２＝０．１５９、０．５８３,均为Ｐ＞０．０５）。在３－６岁（χ２＝１０．３０,Ｐ＜０．０１）、＞６－９岁（χ２＝６．６６５,Ｐ＝０．０３６）两个年龄段,观察组患儿的疗效优于对照组,而２组＞９－１５岁患儿疗效差异并无统计学意义（χ２＝１．８９５,Ｐ＞０．０５）。在不同治疗时间内,观察组患儿治愈率显著高于对照组,差异有显著统计学意义（χ２＝２０．１４,Ｐ＜０．０１）。结论　智能化多维训练相对于传统综合疗法,治疗屈光不正性弱视患儿疗效更佳,且患儿屈光不正类型、发病年龄及治疗时间明显影响疗效。     

原因不明习惯性流产患者自身抗体的研究

目的 通过对原因不明习惯性流产（ＨＡ）患者进行多项自身抗体的筛查,研究了ＨＡ与自身抗体的关系。方法 ６９例原因不明ＨＡ患者为研究组,其中原发性ＨＡ５１例（原发性ＨＡ）继发性ＨＡ１８例（继发性ＨＡ组）３０例健康育龄妇女为对照组,对３组患者采用酶联免疫吸会法检测血清抗心磷脂抗体,抗单链及双链ＤＮＡ抗体,采用Ｈｅｐ－２细胞间接荧光法筛查抗核抗体,采用间接荣光法检测抗平滑肌,抗心肌及抗线粒体抗体,对７种可     

羧乙基锗倍半氧化物对正常和异丙基肾上腺素损伤培养乳鼠心肌细胞的影响

羧乙基锗倍半氧化物(Ge—132)能促进培养乳鼠心肌细胞DNA和RNA的合成,提高超氧化物歧化酶(SOD)的活性,维持细胞膜结构的稳定。异丙基肾上腺素可使心肌细胞乳酸脱氢酶(LDH)释放增加,细胞搏动停止,超微结构显示肌膜和线粒体严重受损。Ge—132可显著减少异两基肾上腺素引起心肌细胞释放LDH,维持细胞的搏动功能和超微结构的完整。     

Qiangli Wuhu mixture alleviates LPS-induced pneumonia by inhibiting the TLR4/NF-κB/NLRP3 pathway: a study based on network pharmacology

ContextQiangli Wuhu (QLWH) mixture is a concoction approved and registered by Ningxia Medical Products Administration. It has therapeutic effects on various types of pneumonia.ObjectiveTo clarify the mechanisms of QLWH in treating pneumonia.Materials and methodsThe potential targets of QLWH in the treatment of pneumonia were predicted by network pharmacology. Male, Institute of Cancer Research (ICR) mice were randomly divided into five groups of 12 mice, control, vehicle, QLWH (10 and 20 mg/kg) and dexamethasone (DXM), and orally treated twice daily with normal saline, QLWH or DXM. The pneumonia model was established by tracheal instillation of lipopolysaccharide (LPS). After treatment five days, ELISA, H&E staining and Western blot were used to investigate protective effects of QLWH.ResultsNine hundred and ninety-four active ingredients were found through network pharmacology, corresponding to 135 targets for the treatment of pneumonia; compared to the vehicle group, QLWH (10 and 20 mg/kg) significantly decreased the levels of TNF-α (14.3% and 28.8%), IL-1β (23.9% and 42.8%) and IL-6 (13.2% and 16.1%), increased the levels of IL-10 (134.3% and 172.9%); in terms of mechanism, QLWH down-regulated TLR4/NF-κB/NLRP3 axis related proteins in lung tissue of pneumonia model mice (p < 0.05).Discussion and conclusionsThis study combined network pharmacology and animal experiments, providing effective evidence for the clinical promotion of QLWH. Meanwhile, it is of significance for further development.     

The Effect of Acidity Coefficient on the Crystallization Properties and Viscosity of Modified Blast Furnace Slag for Mineral Wool Production

The crystallization and viscosity of modified blast furnace slag are key factors in fiber forming conditions. In this paper, the crystallization behavior of modified blast furnace slag under continuous cooling conditions was studied by differential scanning calorimetry, and its crystallization kinetics with different acidity coefficients were established. On this basis, the evolution law of the crystallization phase and the influence of crystallization on the viscosity of modified blast furnace slag with different acidity coefficients were analyzed. The results indicated that the crystallization phases of slag with acidity coefficients of 1.05 and 1.20 were, respectively, Melilite and Anorthite. During the cooling process at the acidity coefficient of 1.05, the critical rates of precipitation of Melilite and Anorthite were 50 °C/s and 20 °C/s, respectively, while they were 20 °C/s and 15 °C/s, respectively, at the acidity coefficient of 1.20. With the increase of the acidity coefficient, the crystal growth mode of slag changed from two-dimensional and three-dimensional mixed crystallization to surface nucleation and one-dimensional crystallization. The crystallization activation energy of slag with acidity coefficients of 1.05 and 1.20 were 698.14 kJ/mol and 1292.50 kJ/mol, respectively. In addition, the change trend of viscosity was related to crystal size and content.     

A Novel Preparation of Special-Shaped Phosphors-in-Glass by Gel Casting with Isobam for High-Power WLEDs Lighting

Phosphors-in-glass (PiGs) regarded as a promising phosphor-converter for white light emitting diodes (WLEDs) is being researched widely. However, there are few reports on the effect of changing the shape of PiGs on the color rendering index (CRI) and heat dissipation of WLEDs. In this paper, gel casting with Isobam was first attempted in preparing special-shaped PiGs successfully. It exhibited that 76 wt.% was the optimum solid content based on the rheological properties of slurry and the shrinkage of green bodies. The sintering rate should be kept at a low speed and glass transition temperature (Tg) of glass powders must be higher than sublimation temperatures (Ts) of APS and Isobam. The CRI of PiGs was increased by about 27% after changing the shape of PiGs from cylinder to dome. Most importantly, operating temperature also reduced effectively the increase of the surface area of PiGs. Therefore, changing the shape of PiGs by gel casting with Isobam is a creative way for high-power WLEDs lighting.     

先天性巨结肠中miR-939靶向调控SOX4表达抑制肠神经嵴前体细胞功能表型的实验研究

目的 检测MicroRNA-939(miR-939)和性别决定区相关HMG族盒蛋白4(Sry-related HMG box 4,SOX4)在先天性巨结肠(Hirschsprung's disease,HSCR)中的表达水平,评估miR-939在SOX4调控肠神经嵴前体细胞(enteric neural crest c...     

灯盏乙素抗肿瘤作用机制研究进展

灯盏乙素是从菊科植物短莛飞蓬Erigeron breviscapus（灯盏花）中提取得到的黄酮类化合物。作为其最主要的有效成分,灯盏乙素具有抗炎、抗氧化、抗纤维化、抗胆固醇血症、抗心肌梗死等药理活性。近年来,其抗肿瘤作用被逐渐发现并受到广泛关注。研究发现灯盏乙素能显著抑制非小细胞肺癌、结直肠癌、肝癌、黑色素瘤、骨髓瘤、宫颈癌、乳腺癌、卵巢癌、前列腺癌等癌症的发生发展。其抗肿瘤作用机制包括抑制肿瘤细胞增殖、促进肿瘤细胞凋亡、阻碍肿瘤侵袭和迁移、减轻肿瘤炎症反应、增强抗肿瘤药物敏感性等多个方面,在抗肿瘤治疗领域具有巨大开发潜力。结合文献,针对灯盏乙素抗肿瘤作用机制进行综述,以期为进一步的研究和应用提供参考。     

Predictive value of postoperative serum prealbumin levels for early detection of anastomotic leak after esophagectomy: A retrospective study

The impact of serum prealbumin in patients with esophageal carcinoma after undergoing esophagectomy remains unclear, we speculated that serum prealbumin is associated with anastomotic leak (AL) after surgery, low serum prealbumin level may lead to AL. The aim of the study was to evaluate the relationship between serum prealbumin levels and AL after esophagectomy, to explore the value of serum prealbumin as an early predictor of AL after esophagectomy.Between January 2014 and December 2018, 255 patients were enrolled in this study, their basic characteristics and perioperative serum prealbumin levels were retrospectively analyzed. Statistical analysis by t test, nonparametric test and logistic regression were used to analyze data for patients with and without AL. Based on a receiver operator characteristic curve, a cut-off value for serum prealbumin levels as a predictor of AL was determined.Among the 255 patients, 18 patients were diagnosed with AL. The overall AL rate was 7.0% (18/255) including 12 cases of intrathoracic AL and 6 cases of cervical AL. By univariate analysis, we identified postoperative serum prealbumin level as a risk factor for AL (P < .001). Multivariate analysis also demonstrated postoperative serum prealbumin level (P = .028) to be an independent risk factor for AL. The best cut-off value of postoperative serum prealbumin level was 131 mg/L for predicting AL, with 83.3% sensitivity and 72.2% specificity.Postoperative serum prealbumin level was significantly associated with AL. it may help the early prediction of postoperative AL.