创伤刺激、肾上腺素和地塞米松对小鼠应激能力的影响

目的 比较创伤刺激和使用肾上腺素、地塞米松或两药合用对小鼠应激能力的影响.方法 分别采用剪尾法及游泳法结合血糖水平测定观察小鼠应激状态的变化;进一步在给予地塞米松、不同浓度肾上腺素及两药合用条件下,测定血糖水平和游泳力竭时间,观察药物对小鼠应激能力的影响.结果 剪尾组血糖水平与生理盐水对照组间比较,差异无统计学意义(P>0.05);给予一定剂量肾上腺素的小鼠,其血糖水平明显高于创伤刺激组和对照组小鼠,差异有统计学意义(P<0.05);在各种药物使用的比较中,较高浓度肾上腺素组游泳力竭时间明显短于地塞米松组和对照组,差异有统计学意义(P<0.05);较高浓度肾上腺素组、两药合用组游泳后血糖水平均明显高于地塞米松组和对照组,差异有统计学意义(P<0.05);低浓度肾上腺素组游泳后血糖水平也明显高于对照组,差异有统计学意义(P<0.05).结论 与对照组相比,剪尾创伤并不足以引起显著的以血糖升高为特点的应激反应;给予肾上腺素及肾上腺素与地塞米松合用虽均显著升高血糖水平但会降低小鼠的运动应激能力.     

Anti-obesity effect and UHPLC-QTOF-MS/MS based metabolite profiling of Solanum nigrum leaf extract

Objective:To evaluate the antioxidant potential and pancreatic lipase inhibitory action of optimized hydroethanolic extracts of Solanum nigrum.Methods:Optimized extraction for maximum recovery of metabolites was performed using a combination of freeze-drying and ultrasonication followed by determination of antioxidant and antiobesity properties.The ultra-high performance liquid chromatography equipped with mass spectrometry was used to analyze metabolite profiling of Solanum nigrum.Computational studies were performed using molecular docking and electrostatic potential analysis for individual compounds.The hypolipidemic potential of the most potent extract was assessed in the obese mice fed on fat rich diet.Results:The 80%hydroethanolic extract exhibited the highest extract yield,total phenolic contents,total flavonoid contents along with the strongest 2,2-diphenyl-1-picrylhydrazyl scavenging activity,total antioxidant power,and pancreatic lipase inhibitory properties.The 80%hydroethanolic extract not only regulated the lipid profile of obese mice but also restricted the weight gain in the liver,kidney,and heart.The 80%hydroethanolic extract also reduced alanine transaminase and aspartate transaminase concentrations in serum.The effects of plant extract at 300 mg/kg body weight were quite comparable with the standard drug orlistat.Conclusions:Solanum nigrum is proved as an excellent and potent source of secondary metabolites that might be responsible for obesity mitigation.     

高铁蛋白血症与早期糖脂代谢异常的关系

目的 探讨高铁蛋白血症与血糖、血脂代谢紊乱的关系.方法 收集杭州市第一人民医院"健康"体检者382例,根据铁蛋白水平,以310μg/L为限分为高铁蛋白组(A组)与低铁蛋白组(B组),分别测定血脂谱,空腹血糖(FBG)、尿酸(UA)、血红蛋白(Hb)、红细胞计数(RBC)、红细胞压积(HCT)、平均红细胞血红蛋白浓度(MCHC),超声检查脂肪肝,对两组间的数据进行统计学分析.结果 两组间TG、LDL、HDL、ApoAl、ApoB、FBG、UA、Hb、RBC、HCT、MCHC有显著差异,铁蛋白与TG、TC、LDL、ApoB、Hb、RBC、HCT呈正相关,与HDL、ApoA1呈负相关,A组脂肪肝的发生率较B组明显升高.结论 铁蛋白可能是早期糖脂代谢异常的标志物之一.     

解剖学课程资源的开发

课程资源是指供给课程活动、满足课程活动需要的一切,包括构成课程目标、内容的来源和保障课程活动进行的教学设备和材料[1].随着医学的迅猛发展,医学知识不断更新,解剖学作为医学专业的主干课程,开发、整合解剖学课程资源,使其具有前瞻性、有效性、实用性,并进一步优化学生的知识结构,成为解剖学教学研究的新课题.对此,我们进行了探索与实践.     

Comparing different domains of analysis for the characterisation of N-glycans on monoclonal antibodies

With the size of the biopharmaceutical market exponentially increasing,there is an aligned growth in the importance of data-rich analyses,not only to assess drug product safety but also to assist drug development driven by the deeper understanding of structure/function relationships.In monoclonal antibodies,many functions are regulated by N-glycans present in the constant region of the heavy chains and their mechanisms of action are not completely known.The importance of their function focuses analytical research efforts on the development of robust,accurate and fast methods to support drug development and quality control.Released N-glycan analysis is considered as the gold standard for glycosylation characterisation;however,it is not the only method for quantitative analysis of glycoform heterogeneity.In this study,ten different analytical workflows for N-glycan analysis were compared using four monoclonal antibodies.While observing good comparability between the quantitative results generated,it was possible to appreciate the advantages and disadvantages of each technique and to summarise all the observations to guide the choice of the most appropriate analytical workflow according to application and the desired depth of data generated.     

葫芦里卖的什么药?——"哑谜医疗"的前世今生

在中国古代,老百姓对于医生的言行心生疑虑,有一个经典的发问: "不知他葫芦里卖的什么药?"以表达对医生、医学的不安与不满."不过,这种疑虑似乎还只是表现在药物属性上,真药还是假药?贵药或贱药?价格是否诚实?是否贱药贵卖?……如今这种知情诉求可是大大拓展了,不仅关心药物的疗效与毒副作用,还要关心诊断、预后、护理细节、康复举措,还有费用标准与合理性.     

院前急救程序

院前急救是急诊医疗体系的重要组成部分,院前急救处理正确与否直接关系到患者的生死存亡.有效的现场急救,要求医务人员须严格按预定的急救规范进行,这不仅有利于提高急救质量,对解决医疗纠纷、保险等也有重大意义.本栏目倡导尽量使用最新的药物、器械诊治;各操作程序方案的设置力求符合最新理论,并注重可操作性、科学性和实用性.     

遇蛇袭击切勿直着跑

现在很多人把到"深山老林"旅游作为首选目标。事实上,这些地方山高林密,毒蛇出没率最高。随着城市绿化、小区绿化,绿地和草丛也成了一些动物(如蛇、老鼠、蚊虫等)的栖息地,其中蛇最可     

女医生擅离职守救灾对焉 院领导照章处以辞退错否

事件回放 娄继英原是重庆某医院住院部的助理医师,汶川地震发生后,她主动请缨到灾区去服务,但未获医院批准.5月19日,娄继英毅然与其他志愿者奔赴灾区做医护志愿者.然而,当她回到重庆后,却被医院告知,由于她连续旷工3日,医院为严肃劳动纪律,决定对其按自动离职处理.     

构建和谐医患关系的探讨

医患关系紧张已是尽人皆知的事，哈医大二院天价医疗费事件、上海长江医院孕妇不孕症事件更是将其推向了极至；2006年12月25日，广州各大媒体连续报道深圳山厦医院的医务人员戴着钢盔为患者诊治疾病的事件，对此，我们该为谁唱悲歌呢？