免疫组化检测膀胱癌中netrin-1的表达

目的:比较不同病理分期膀胱癌组织标本中netrin-1表达量的差异,分析其表达量与膀胱癌临床分期的关系。方法:选取膀胱癌组织标本100例,免疫组化方法检测netrin-1表达量。结果:netrin-1在膀胱癌组织中随病理分期的升高,表达量增加(P<0.05)。结论:netrin-1表达量与膀胱癌临床病理分期显著相关,对推测膀胱癌的术前分期以及对临床选择治疗方案和估计预后具有重要意义。     

Purification and identification of a polysaccharide from medicinal mushroom Amauroderma rude with immunomodulatory activity and inhibitory effect on tumor growth

Medicinal mushrooms in recent years have been the subject of many experiments searching for anticancer properties. We previously screened thirteen mushrooms for their potential in inhibiting tumor growth, and found that the water extract of Amauroderma rude exerted the highest activity. Previous studies have shown that the polysaccharides contained in the water extract were responsible for the anticancer properties. This study was designed to explore the potential effects of the polysaccharides on immune regulation and tumor growth. Using the crude Amauroderma rude extract, in vitro experiments showed that the capacities of spleen lymphocytes, macrophages, and natural killer cells were all increased. In vivo experiments showed that the extract increased macrophage metabolism, lymphocyte proliferation, and antibody production. In addition, the partially purified product stimulated the secretion of cytokines in vitro, and in vivo. Overall, the extract decreased tumor growth rates. Lastly, the active compound was purified and identified as polysaccharide F212. Most importantly, the purified polysaccharide had the highest activity in increasing lymphocyte proliferation. In summary, this molecule may serve as a lead compound for drug development.     

HELLP综合症二例诊治分析

目的探讨HELLP综合症的诊断及治疗措施。方法对我院收治的HELLP综合症二例的临床资料进行回顾性分析。结果 1例因突发头痛伴意识不清5h入院,头颅CT示脑室出血,经临床检查确诊为HELLP综合症,虽行"剖宫产"及"侧脑室穿刺外引流术",但病情持续恶化,自动出院。另1例因剖腹产后出现抽搐、酱油色尿入院,诊断为HELLP综合症,予解痉、降压、镇静、抑制血小板聚集及血浆置换后痊愈出院。结论 HELLP综合症临床少见,其临床表现无特异性,应保持警惕性并及时行相关实验室检查才能早期诊断,及时终止妊娠并给予解痉、降压、抑制血小板聚集、激素是其根本治疗措施,必要时给予血浆置换。     

UFLC法同时测定栀子厚朴汤中2个黄酮类成分的含量

目的 建立同时测定栀子厚朴汤中2个黄酮类成分(柚皮苷和新橙皮苷)含量的超快速液相色谱法分析方法.方法 色谱柱采用Shim-Pack XR-ODS柱(75 mm×x3.0 mm,2.2 μm),流动相A为0.1％甲酸水,流动相B为乙腈,梯度洗脱(0～10 min,20％B～30％B),平衡时间设定为5 min,流速设定为0.4 mL/min,检测波长采用265 nm,柱温设定为30℃,进样量设定为5 μL.结果 柚皮苷与新橙皮苷分别在3～150 mg/L(r=0.999 3)和1～50 mg/L(r=0.999 7)浓度范围内与峰面积呈良好的线性关系,平均回收率分别为98.9％和99.1％.结论 该方法结果准确、操作简便、具有良好的重现性和稳定性,可用于栀子厚朴汤的质量控制.     

光学测量系统在面部外形测量中的应用研究

目的 研究面部三维光学测量系统在面部外形重建和测量中的实用性和可靠性。方法 利用自行研制的面部三维光学测量系统扫描45名正常人面形，结合Geomagic studio软件反求重建面部外形。比较面部内眦间距、鼻长、鼻宽、鼻高、鼻深等的反求测量结果与手工测量结果间的差异。结果 基于面部三维光学测量系统结合反求软件直接重建了45名正常人的面部三维外形，面部测量项目的 反求测量结果与手工测量结果在统计学上无明显差异（P>0.05）。结论 面部三维光学测量系统在面部外形采集、反求重建、三维测量中具有较高的可靠性和较好的实用性。     

Optimization of voriconazole dosage regimen to improve the efficacy in patients with invasive fungal disease by pharmacokinetic/pharmacodynamic analysis

Invasive fungal disease (IFD) is a significant cause of morbidity and mortality in hospitalized patients. To maximize the efficacy of voriconazole treatment, the study established the relationship between voriconazole pharmacokinetic/pharmacodynamic (PK/PD) and probability of response and optimized voriconazole dosage regimen in patients with IFD based on Monte Carlo simulation. Forty‐four patients proven with IFD were involved in this study. Among them, the overall cure rate was 75% (33/44) and there was a significant difference between C_min/MIC values in patients with lack of response (n = 11) and those with successful response (n = 33) (mean value: 1.91 vs. 11.33; P < 0.05). Logistic regression model showed a high correlation between voriconazole C_min/MIC ratio and clinical response (P = 0.044, OR = 1.349). According to Monte Carlo simulation results under different voriconazole dosing regimens, we could draw a conclusion that 200 mg voriconazole administered intravenously or orally twice daily for Candida infections and 300 mg administered orally or with 200 mg administered intravenously twice daily for Aspergillus infections were rational, which could achieve a value of the cumulative fraction of response >90%. This study built the relationship between voriconazole PK/PD and clinical response and obtained the reasonable empirical dosage regimen, which can be used to customize individual dosage regimen and improve the efficacy of voriconazole treatment.     

维生素D及其衍生物在银屑病发病机制和治疗中的作用

 银屑病是一种常见的免疫介导的慢性炎症性皮肤病，以红斑、丘疹、鳞屑为临床表现。迄今为止，银屑病的发病机制尚未完全明确。研究表明，缺乏维生素D（VD）可加重皮肤的炎症反应和免疫失衡，促进角质形成细胞（KC）的增殖，破坏皮肤屏障功能，从而导致银屑病的发生和发展。VD及VD3衍生物（VDAs）对银屑病有较好的治疗作用。本文概述了VD及其衍生物治疗银屑病的作用机制，评价其治疗价值。