Construction of Eukaryotic Expression Plasmid of Human PRX3 and Its Expression in HEK-293FT Cells

To construct the eukaryotic expression plasmid of human PRX3 and measure its expression in the HEK-293FT cells, the full-length coding region of human PRX3 was cloned by PCR and inserted into the eukaryotic expression vector pcDNA4-Xpress (A). HEK-293FT cells were transiently transfected with the recombinant plasmid. Western blot and immuofluorescence were used to detect the expression of the fusion protein. In the experiment, restriction analysis identified the construction of the recombinant plasmid and the inserted sequence was identical with that published on GenBank. Western blot and immunofluorescence confirmed the expression of the recombinant protein in transfected HEK-293FT cells. It was concluded that the eukaryotic expression plasmid of human PRX3 was constructed successfully and the recombinant could he expressed efficiently in HEK-293FT cells, which provides a sound basis for the further study on human PRX3.     

对－取代苯甲酰氨基苯甲酸（甲酯）的合成及其分化诱导HL－60细胞活性试验

作者合成了１６个对－苯甲酰氨基苯甲酸（甲酯），并进行了分化诱导人髓系白血病细胞（ＨＬ－６０细胞）的活性试验，其中有４个化合物活性较强，在浓度为１０￣（－６）ｍｏｌ／Ｌ时可使２５％～５０％以上的早幼粒细胞分化为较成熟细胞；有两个化合物在浓度为５×１０￣（－６）ｍｏｌ／Ｌ时可使细胞分化率提高到７０％，但较维Ａ酸分化率（９７％）为低。     

单克隆抗体对溶组织内阿米巴吞噬红细胞的影响

用具有抗细胞膜活性和抗细胞核、胞浆活性的单克隆抗体３Ｆ７和４Ｇ６与致病性溶组织内阿米巴ＨＭ－１∶ＩＭＳＳ株滋养体３７℃孵育，在孵育即刻、５ｍｉｎ、１０ｍｉｎ加入红细胞，检测滋养体吞噬红细胞的能力，并以正常小鼠血清和抗克氏锥虫抗体ＴＣＥ０４作为对照。结果，经单克隆抗体３Ｆ７孵育即刻的ＨＭ－１∶ＩＭＳＳ虫株滋养体吞噬红细胞能力明显减弱（Ｐ＜０．００１），而４Ｇ６抑制滋养体吞噬红细胞的作用不如前者明显。提示，抗细胞膜单克隆抗体对抑制滋养体吞噬红细胞有显著作用，但随着时间的推移，抑制作用明显减弱。     

雷公藤多甙影响蟾蜍神经—肌接头传递初探

用微电极细胞内记录终板电位（ＥＰＰ）的电生理学方法，在２０只成年蟾蜍的坐骨神经缝匠肌标本上研究了雷公藤多甙（ＴＷＰ）以神经肌接头（ＮＭＪ）兴奋传递的影响。结果表明：ＴＷＰ可引起ＥＰＰ振幅改变，物兴奋传递，而且其影响具有明显的量效依赖关系，适当浓度的ＴＷＰ能明显地增加ＥＰＰ振幅，促进ＮＭＪ的兴奋传递。     

对－苯二甲酸衍生物的合成及其诱导分化HL－60细胞的活性

作者合成了１３个对－苯二甲酸衍生物，其中有９个化合物尚未见文献报道。通过对ＨＬ－６０细胞诱导分化活性试验，发现有两个化合物在浓度为５×１０￣（－６）ｍｏｌ／Ｌ时，可使细胞分化率达５５％，低于维Ａ酸的分化率（７９％，１０￣（－７）ｍｏｌ／Ｌ）。     

紫外线减毒尾蚴活疫苗预防小鼠日本血吸虫感染有效免疫期的实验研究

以 400μW/(min·cm~2)剂量紫外线照射减毒日本血吸虫尾蚴, 1 次免疫小鼠(200条/只)可产生抗日本血吸虫感染的免疫能力。这种免疫力至少可维持7个月。1、3、5、7个月各组中,免疫组与攻击组虫荷均数比较,差异均有显著性意义。1、3、5和7个月所获减虫率分别为71.28％、69.63％、62.26％和46.16％,7个月与1、3、5个月比较,差异有显著性意义,提示7个月时小鼠抗日本血吸虫的免疫力可能有所下降。     

Select types of supporting cell in the inner ear express aquaporin-4 water channel protein

Aquaporins (AQPs) confer a high water permeability on cell membranes and play important parts in secretory and absorptive epithelia in kidney and other organs. Here we investigate whether AQPs are expressed in the sensory epithelia of the inner ear, where a precise volume regulation is crucial. By use of specific antibodies it was found that the inner ear contains AQP1 and 4 while being devoid of detectable levels of AQP2, 3 or 5. Immunofluorescence and postembedding immunogold labelling revealed a strictly non-epithelial distribution of AQP1, confirming previous data. In contrast, AQP4 protein and mRNA (visualized by in situ hybridization) were concentrated in select types of supporting cell, including Hensen's cells and inner sulcus cells. Immunogold particles signalling AQP4 were confined to the basolateral plasma membrane of Hensen's cells and to the basal plasma membrane of Claudius cells and inner sulcus cells. AQP4 was also found in supporting cells of the vestibular end organs, but was absent from transitional epithelial cells and dark cells. Strong labelling for AQP4 and AQP4-mRNA was associated with the central part of the cochlear and vestibular nerves. Hair cells were consistently unlabelled. Our findings indicate that AQP4 may facilitate osmotically driven water fluxes in the sensory epithelia of the inner ear and thus contribute to the volume and ion homeostasis at these sites.     

线粒体与吗啡诱导的肝损伤作用

我们用药掺食法培养吗啡依赖大鼠模型，研究了吗啡依赖大鼠肝线粒体自由基损伤及其结构与功能的变化。结果发现：超氧化物歧化酶（ＳＯＤ）活性明显降低、丙二醛（ＭＤＡ）含量明显升高；细胞色素Ｃ氧化酶活性、心磷脂含量和膜流动性都明显降低。这表明吗啡依赖大鼠肝线粒体自由基清除能力降低，导致自由基损伤增加，并进一步影响到线粒体的结构与功能。线粒体结构与功能的这种改变可能在吗啡诱导的肝损伤中有重要作用。     

临床医学（乡村医师）专业学生双循环管理体系的实践和思考

临床医学（乡村医师）专业学生的培养,是推进新疆基层卫生健康建设的重要举措,该专业人才的培养与教育管理模式密切相关。本文针对乡村医师学生管理和培养中出现的问题,探索改进方法,旨在从管理的角度构建临床医学（乡村医师）专业双循环管理体系（大循环管理体系和小循环管理体系）。以大循环管理体系为主体,以小循环管理体系为院校管理重点,双循环管理体系相互促进,试图构建院校教育、毕业教育与继续医学教育三位一体的人才管理培养体系。以该体系为支撑,借助同一辅导员循环管理不同年级、不同时期学生的优势,增加辅导员与各年级班主任、各年级学生之间的交流,使辅导员、班主任和各年级学生更直观、深入了解本专业的课程设置及实习就业等情况,为提高临床医学（乡村医师）专业学生管理教育水平提供借鉴与参考。