免疫抑制剂冲击治疗高原Graves眼病的疗效观察

目的:研究免疫抑制剂甲氨喋呤 地塞米松冲击治疗高原Graves眼病的疗效. 方法:选择居住地位于海拔2 260m～3 500m之间的Graves 眼病患者60例,随机分为冲击治疗组和对照组,治疗前后两组分别测量患眼的突眼度及眼病症状改善评分.结果:两组患者治疗前后突眼度下降程度比较差别有显著性(P＜0.05);两组间不良反应比较,差别有显著性(P＜0.05).结论:甲氨喋呤 地塞米松静点免疫冲击治疗高原Graves眼病,尤其对恶性突眼的治疗,疗效肯定,副作用小,优于糖皮质激素口服治疗.     

加味益气通玄方对大鼠脑缺血再灌注损伤的抑制作用

目的 探究加味益气通玄方对大鼠脑缺血再灌注损伤的抑制作用,为临床用药提供科学依据.方法 72只大鼠随机分为6组,即假手术组、模型组、阿司匹林组、加味益气通玄方(27.68、13.84、6.92g/kg)组,每组12只.除假手术组外,其余各组大鼠通过中动脉栓塞法(MCAO)缺血2h后再灌注,再灌注24 h后分别给予27....     

中性粒细胞/淋巴细胞比值等4项指标对溃疡性结肠炎内镜活动度的判断价值

目的 探讨中性粒细胞/淋巴细胞比值(neutrophils-lymphocytes ratio,NLR)、单核细胞/淋巴细胞比值(monocyte-lymphocytes ratio,MLR)、C 反应蛋白(C-reactive protein,CRP)、红细胞沉降率(erythrocyte sedimentation...     

Predictions and Experiments on the Distortion of the 20Cr2Ni4A C-ring during Carburizing and Quenching Process

This paper focuses on the effect of gear steel on distortion due to phase transformation in carburizing and quenching. The carburizing and quenching process of C-rings under suspension was studied by using the finite element method based on the thermo-mechanical theory, considering phase transformation. The phase transformation kinetics parameters, depending on different carbon contents, were measured by Gleeble-3500. The distortion behavior of the carburized C-ring during the cooling stage was analyzed, as well as the carbon concentration distribution and martensite volume fractions. The accuracy of the simulation was also verified by comparing the experimental data with the simulated result of the distortion and microstructure. A reliable basis is provided for predicting the distortion mechanism of gear steels in carburizing and quenching.     

梁苹茂治疗痤疮经验

痤疮是临床常见疾病,梁苹茂教授根据多年临床经验,采用中药汤剂内服辨证治疗,每获良效。     

iRoot BP Plus在根管内血运重建术中的效果研究

目的 观察iRoot BP Plus在根管内血运重建术中的治疗效果.方法 选取接受治疗的80例年轻恒牙牙髓坏死患者为研究对象,随机分为观察组(n=40)与对照组(n=40).2组均行根管内血运重建术,对照组采用矿物三氧化聚合体(MTA)封闭根管上段,观察组采用iRoot BP Plus封闭根管上段.观察2组患者6个月后...     

A facile imine-linked covalent organic framework doped with a carbon dot composite for the detection and removal of Hg2+ in surface water

Hg²⁺ is one of the most toxic chemical species in the water environment, and thus developing a new fluorescent covalent organic framework for both the detection and removal of Hg²⁺ is highly desirable. Herein, a fluorescent composite, termed TpPa-1 COF@CDs, was synthesized by inverse emulsion polymerization method using an imine covalent organic framework as the supporting material and carbon dots as the fluorescent sensor element. The crystallinity, porosity, rich functional receptors (hydroxyl and amino groups), thermal stability and fluorescent properties of TpPa-1 COF@CDs were characterized. The results showed that TpPa-1 COF@CDs exhibited a good detection and removal performance for Hg²⁺, which was evidenced by its high sensitivity (LOD = 0.75 μg L⁻¹), superior selectivity, large adsorption capacity (235 mg g⁻¹), fast adsorption rate (30 min equilibrium time) and good regeneration (at least five cycles). More importantly, the simple functional monomer, short reaction time and metal-free raw material made TpPa-1 COF@CDs reliable, cost effective and eco-friendly. This research demonstrated the facile construction of a functional covalent organic framework composite for water environmental remediation technologies of metal pollution.

TpPa-1 COF@CDs as a fluorescent composite exhibited good detection and removal performance for Hg²⁺. The simple functional monomer, short reaction time and metal-free raw material made TpPa-1 COF@CDs reliable, cost effective and eco-friendly.     

瓜蒌薤白半夏汤加减联合西药治疗痰浊内阻型冠心病患者的效果

目的：探讨瓜蒌薤白半夏汤加减联合西药治疗痰浊内阻型冠心病患者的效果。方法：回顾性分析2019年3月至2021年3月该院收治的100例痰浊内阻型冠心病患者的临床资料,根据治疗方法不同分为对照组和观察组各50例。对照组采用常规西药（盐酸曲美他嗪片+单硝酸异山梨酯片+阿托伐他汀钙片）治疗,观察组在其基础上加服瓜蒌薤白半夏汤加减治疗,均连续治疗4周。比较两组临床疗效、治疗前后血脂指标[三酰甘油（TG）、总胆固醇（TC）、低密度脂蛋白（LDL-C）和高密度脂蛋白（HDL-C）]水平、中医证候积分及不良反应发生率。结果：观察组治疗总有效率为96.00%(48/50),高于对照组的82.00%(41/50),差异有统计学意义（P<0.05）;治疗后,观察组HDL-C水平高于对照组,TG、TC、LDL-C水平及中医证候积分低于对照组,差异均有统计学意义（P<0.05）;两组不良反应发生率比较,差异无统计学意义（P>0.05）。结论：瓜蒌薤白半夏汤加减联合西药治疗痰浊内阻型冠心病患者效果确切,可缓解临床症状,降低血脂水平,安全可靠,效果优于单用西药治疗。     

鼻腔鼻窦内翻性乳头状瘤中MMP-9、PCNA的表达及临床意义

目的：探讨MMP-9、PCNA在鼻内翻性乳头状瘤(SNIP)发病及其复发和恶变中的作用。方法：选取40例SNIP及10例鼻腔鼻窦鳞状细胞癌（SCC）组织蜡块,全部标本分为4组,即良性SNIP组、复发SNIP组、恶变SNIP组及SCC组。利用免疫组织化学染色技术检测MMP-9、PCNA在各组中的表达情况。结果：MMP-9、PCNA在良性SNIP组、复发SNIP组、恶变SNIP组及SCC组中的表达逐渐增强,经秩和检验两两比较,显示MMP-9的表达在良性SNIP组与复发SNIP组,良性SNIP组与恶变SNIP组,良性SNIP组与SCC组之间均有显著性差异,复发SNIP组与恶变SNIP组,复发SNIP组与SCC组,恶变SNIP组与SCC组之间无明显差异;PCNA的表达在各组间差异无显著性。结论：MMP-9、PCNA的表达参与SNIP的发病,并在其复发和恶变中起重要作用,可能是SNIP复发和恶变的早期事件之一。