不同专业人体寄生虫学教学模式改革初探

为了使同一课程教学效果在不同专业都能达到学以致用的目的,皖南医学院医学寄生虫学教研室人体寄生虫学课程区分临床、预防、检验等不同医学专业,按照相关专业工作流程及人才培养定位施教,既培养出更多更好的高层次应用型创新型医学人才,又促进了学科建设,提高了教学质量。

Optimization of the Extraction Process of Polysaccharides from Tegillarca granosa by Response Surface Methodology

[ Objective] The aim was to use response surface methodology to determine optimum conditions for extraction of polysaccharides from Tegillarca granosa. [ Method] Response surface methodology with three-factors and throe-levels was carried out for optimizing the extraction process of polysacchafides from Tegillarca granosa. A central composite des（gn including independent variables, such as extraction temperature （A）, extraction time （B）, and ethanol concentration （C） was obtained through Box-Benhnken central combination design. Selected response which evaluates the extraction process was polysacchadde yield. [ Result] The independent variable with the largest effect on response was ethanol concentration （C）. The optimum extraction conditions were found to be extraction temperature 69.6℃, extraction time 6.2 h, and ethanol concen- tration of 78% （V/V）, respectively. Under these conditions, the extraction efficiency of polysaccharide can increase to 1. 635%. [ Coaclusioa] Study on the extraction of polysaccharides from Tegillarca granosa could provide certain theoretical direction for extracting polysaccharides from Tegillarca granosa on a large scale.

linc00619通过AKT/ERK信号抑制BEAS-2B细胞的增殖和迁移

目的:探讨长链非编码RNA 00619(linc00619)在人肺上皮细胞BEAS-2B中的生物学作用。方法:用RNA原位杂交对linc00619进行BEAS-2B亚细胞定位;采用CRISPR/Cas9方法构建linc00619慢病毒敲除载体,CCK8和Transwell试验检测linc00619敲除对BEAS-2B增殖和迁移的影响;lncRNA芯片检测linc00619敲除后差异表达的mRNAs并进行KEGG富集分析;Western blot检测AKT、MEK和ERK等增殖相关分子。结果:linc00619定位于细胞质。linc00619敲除促进了BEAS-2B的增殖和迁移。linc00619敲除后得到了3461个差异表达mRNAs。共有922个mRNAs被富集进KEGG信号通路,其中MAPK信号是显著富集的信号之一。Western blot证实,linc00619敲除活化了AKT和ERK。结论:细胞质表达的linc00619通过抑制AKT/ERK信号抑制了BEAS-2B的增殖和迁移。