丹红联合川芎嗪注射液治疗不稳定型心绞痛108例

目的 观察丹红注射液联合川芎嗪注射液治疗不稳定型心绞痛的临床疗效.方法 将108例患者随机均分为两组,均予常规治疗,治疗组在此基础上加用丹红注射液联合川芎嗪注射液治疗.结果 治疗组总有效率为85.19%,明显高于对照组的70.37%(P<0.05).结论 丹红注射液联合川芎嗪注射液治疗不稳定型心绞痛疗效显著,值得临床推广.     

丁香酚防治牙周炎的药理作用研究进展

牙周炎是常见的口腔病变。抗生素治疗是牙周炎的常用治疗手段,但长期使用能引起不同程度的耐药性。丁香酚是从丁香中提取的有效成分,可通过抑菌作用、抗氧化作用、抗炎作用、调节巨噬细胞功能、阻止破骨细胞活化、镇痛作用、促骨再生作用等多种途径发挥防治牙周炎的作用。综述了丁香酚防治牙周炎的药理作用,为丁香酚在牙周炎的使用提供循证支持。     

pH-Dependent Photophysical Properties of Metallic Phase MoSe2 Quantum Dots

Fluorescence properties of quantum dots (QDs) are critically affected by their redox states, which is important for practical applications. In this study, we investigated the optical properties of MoSe₂-metallic phase quantum-dots (MoSe₂-mQDs) depending on the pH variation, in which the MoSe₂-mQDs were dispersed in water with two sizes (Φ~3 nm and 12 nm). The larger MoSe₂-mQDs exhibited a large red-shift and broadening of photoluminescence (PL) peak with a constant UV absorption spectra as varying the pH, while the smaller ones showed a small red-shift and peak broadening, but discrete absorption bands in the acidic solution. The excitation wavelength-dependent photoluminescence shows that the PL properties of smaller MoSe₂-mQDs are more sensitive to the pH change compared to those of larger ones. From the time-resolved PL spectroscopy, the excitons dominantly decaying with an energy of ~3 eV in pH 2 clearly show the shift of PL peak to the lower energy (~2.6 eV) as the pH increases to 7 and 11 in the smaller MoSe₂-mQDs. On the other hand, in the larger MoSe₂-mQDs, the exciton decay is less sensitive to the redox states compared to those of the smaller ones. This result shows that the pH variation is more critical to the change of photophysical properties than the size effect in MoSe₂-mQDs.     

角膜塑形镜控制青少年近视进展的效果和影响因素分析

目的:评价角膜塑形镜对青少年近视的控制效果和相关影响因素.方法:选择2012-01/2014-12在我院眼科门诊就诊的8~17岁低中度近视的患者97例189眼,配镜后随访2a,观察患者视力、角膜曲率、屈光度、眼轴长度的变化,并分析青少年近视进展的影响因素.结果:患者裸眼视力、角膜水平曲率及角膜垂直曲率戴镜1mo后与戴镜前相比,差异均有统计学意义(P<0.001).配戴角膜塑形镜的患者在戴镜2a后等效球镜变化量(-0.51±0.64D,t=10.864,P<0.001),眼轴长度增加(0.33±0.31mm,t=14.879,P<0.001),角膜散光变化量(-0.25±0.43D,t=5.375,P<0.001),差异均有统计学意义.等效球镜变化量相关因素分析显示,年龄、戴镜前球镜、戴镜前等效球镜、基础眼轴与等效球镜变化量均呈负相关(P<0.05).结论:角膜塑形镜可有效提高患者裸眼视力.虽然配戴角膜塑形镜患者的眼轴和屈光度有小幅增加,但仍是一种有效控制近视发展的矫治方法.角膜塑形术对于年龄较大,基础眼轴长,近视度数高的患者,其近视控制效果更好.     

复方环丙沙星耳用滴丸临床疗效观察

目的观察、评价复方环丙沙星耳用滴丸的临床疗效。方法将140例慢性中耳炎患者随即分为治疗组和对照组,治疗组给予复方环丙沙星耳用滴丸治疗,对照组给予复方环丙沙星滴耳液治疗,观察治疗前后患者的临床症状和体征,以及病原菌转阴情况,并对上述指标进行量化分级。结果治疗组的有效率和病原菌转阴率明显大于对照组(P<0.01)。结论复方环丙沙星耳用滴丸治疗慢性化脓性中耳炎的临床效果显著优于滴耳液。     

Can Radiotherapy Empower the Host Immune System to Counterattack Neoplastic Cells? A Systematic Review on Tumor Microenvironment Radiomodulation

Despite the rising evidence in favor of immunotherapy (IT), the treatment of oncological patients affected by so-called “cold tumors” still represents an open issue. Cold tumors are characterized by an immunosuppressive (so-called cold) tumor microenvironment (TME), which favors host immune system suppression, cancer immune-escape, and a worse response to IT. However, the TME is not a static element, but dynamically mutates and can be changed. Radiotherapy (RT) can modulate a cold microenvironment, rendering it better at tumor killing by priming the quiescent host immune system, with a consequent increase in immunotherapy response. The combination of TME radiomodulation and IT could therefore be a strategy for those patients affected by cold tumors, with limited or no response to IT. Thus, this review aims to provide an easy, rapid, and practical overview of how RT could convert the cold TME and why cold tumor radiomodulation could represent an interesting strategy in combination with IT.     

A Damage Model of Concrete including Hysteretic Effect under Cyclic Loading

A novel damage model for concrete has been developed, which can reflect the complex hysteresis phenomena of concrete under cyclic loading, as well as other nonlinear behaviors such as stress softening, stiffness degradation, and irreversible deformation. The model cleverly transforms the complex multiaxial stress state into a uniaxial state by equivalent strain, with few computational parameters and simple mathematical expression. The uniaxial tensile and compressive stress–strain curves matching the actual characteristics are used to accommodate the high asymmetry of concrete in tension and compression, respectively. Meanwhile, an unloading path and a reloading path that can reflect the hysteresis effect under cyclic loading of concrete are established, in which the adopted expressions for the loading and unloading characteristic points do not depend on the shape of the curve. The proposed model has a concise form that can be easily implemented and also shows strong generality and flexibility. Finally, the reliability and correctness of the model are verified by comparing the numerical results with the three-point bending beam test, cyclic loading test, and a seismic damage simulation of the Koyna gravity dam.     

1例化脓性血栓静脉炎继发肺部感染患者的药物治疗分析

目的 探讨在治疗化脓性血栓静脉炎继发转移性肺部感染患者过程中药学监护的作用。方法 回顾性分析1例确诊为化脓性血栓静脉炎,并继发肺部转移性感染患者的治疗及临床药师参与监护的全过程,评价抗菌药物的使用,并探索化脓性血栓性静脉炎治疗中抗凝管理的经验。结果 临床药师基于感染部位、脓毒性血栓特点、万古霉素血药浓度监测、抗菌药物代谢动力学/药效学特性等,在抗感染方案调整、万古霉素个体化治疗优化、抗凝时机等方面为临床医师及患者提供全面药学服务,患者全身感染及脓毒性血栓得到有效控制,促进了化脓性血栓静脉炎患者的治疗。结论 临床药师能在重症患者治疗团队中发挥重要作用,提高抗菌药物的合理使用。     

颅眶沟通性肿瘤的显微外科治疗

目的探讨颅眶沟通性肿瘤显微手术治疗的效果及其相关技巧。方法 2000年5月至2011年5月对27例颅眶沟通性肿瘤患者进行了手术治疗。根据肿瘤的生长方式及对眼眶的累及情况选用不同的手术入路,其中经额颞眶顶入路手术17例,眶上-翼点入路5例,改良翼点入路5例。结果肿瘤全切除21例,次全切除4例,部分切除2例;肿瘤全切除率为77.8%(21/27)。术后病理学检查示脑膜瘤19例,转移癌2例,视神经胶质瘤1例,视神经纤维瘤4例,泪腺混合瘤1例。术后随访6年,2例死亡,22例仍存活,3例随访半年后失去联系。结论颅眶沟通性肿瘤首选的治疗方法为手术,选择合适的手术入路、娴熟的显微手术操作对于全切除肿瘤及减少术后并发症十分重要。