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SIV

SIV的相关文献在1989年到2022年内共计125篇,主要集中在基础医学、内科学、畜牧、动物医学、狩猎、蚕、蜂 等领域,其中期刊论文81篇、会议论文2篇、专利文献42篇;相关期刊51种,包括合作经济与科技、动物学研究、生物加工过程等; 相关会议2种,包括第一届近代实验空气动力学会议、第二届中国畜牧科技论坛等;SIV的相关文献由349位作者贡献,包括魏强、丛喆、王卫等。

SIV—发文量

期刊论文>

论文:81 占比:64.80%

会议论文>

论文:2 占比:1.60%

专利文献>

论文:42 占比:33.60%

总计:125篇

SIV—发文趋势图

SIV

-研究学者

  • 魏强
  • 丛喆
  • 王卫
  • 佟巍
  • 蒋虹
  • 涂新明
  • 吴小闲
  • 秦川
  • 胡晓君
  • 薛婧
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 高超; 徐晓辉; 周小昀; 崔玉尚
    • 摘要: 内脏反位(situs inversus viscerum,SIV)是一种非常罕见的先天性畸形。SIV根据范围可以分为完全SIV和部分SIV:完全SIV指解剖结构与正常人完全相反,恰好如同常人在镜子中的影像,因此,又被称为“镜面人”;部分SIV指部分胸腔或者腹腔解剖结构与正常相反。SIV合并肺癌需要手术治疗的病例在临床上十分罕见。2017年4月~2019年12月我院对3例SIV合并肺癌行胸腔镜肺癌根治术,报道如下。
    • 党翠; 陆佳涵; 魏强; 薛婧; 丛喆
    • 摘要: 目的 探讨烟酰胺(NAM)对SIV/SHIV感染猴CD4^(+)T细胞中潜伏病毒的激活效果及其机制。方法 采集血浆病毒载量长期阴性的SIV/SHIV感染猴外周血,分选CD4^(+)T细胞,分别加入NAM、GS-9620、Prostratin等潜伏感染激活剂,检测细胞上清病毒载量,流式分析CD4^(+)T细胞的表面活化分子CD69、CD38、HLA-DR以及辅助受体CXCR4、CCR5的表达情况,蛋白质印迹法(Western blot)检测核内抗原SIRT1表达量的变化。结果 NAM对SIV/SHIV感染猴CD4^(+)T细胞中潜伏病毒具有一定的激活效果,与GS-9620联合使用,可以更大程度的激活潜伏病毒。同时,并不引起T细胞广泛活化,虽小幅上调辅助受体CXCR4的表达,但并不影响CCR5的表达,可以显著降低细胞核内抗原SIRT1的表达。结论 NAM可以作为潜伏感染激活剂的一个选择。
    • 何晓妍; 郑宏毅; 郑永唐
    • 摘要: 目的:建立适合石蜡切片的多重免疫荧光染色方法和配套的定量分析算法,用以研究猕猴艾滋病(SAIDS)模型的免疫病理特征.方法:选取SIV感染猕猴和健康猕猴淋巴结的石蜡切片,以优化后的酪胺信号放大技术(TSA)进行荧光染色,通过几轮微波加热洗去前次标记抗体的方式,达到多重染色的目的.对显微图像进行粒度和灰度分析,计算每一个细胞的位置和目的蛋白的表达特征.最后图像信息被转化成数字矩阵,经R语言编程处理后用于定量分析.结果:TSA法经过优化后,切片的荧光背景信号降低而信噪比增加.荧光图像的定量分析表明,SAIDS快进展者淋巴结的CD4+细胞的感染更为严重(P<0.0001),过度浸润滤泡的CD8+细胞异常高表达颗粒酶B(P<0.0001).结论:本研究建立的TSA法多重免疫荧光染色和配套的定量分析方法是提升病理研究内容的良好技术手段,有助于AIDS及其他疾病发病机制的研究.
    • 周小军; 尚艳姣; 王进; 王爽; 邱业峰
    • 摘要: 目的 非洲绿猴具有不同于食蟹猴和恒河猴等猕猴的生物学特征,如脂质代谢、自发性高血压、SIV感染不引起获得性免疫缺陷综合症(AIDS)等,本研究拟对食蟹猴和非洲绿猴肠道细菌的相对含量进行比较研究.方法 随机选取SIV抗体阴性的成年食蟹猴和非洲绿猴各12只,排除肥胖和疾病个体,收集其新鲜粪便样本,按200 mg每份等分后进行液氮速冻,-80°C保存.其中1份进行肠道细菌的实时定量PCR分析.结果 与食蟹猴相比,非洲绿猴双歧杆菌、乳酸菌以及肠杆菌相对含量显著偏低(P<0.05),而普氏菌以及丁酸盐产生菌——普拉梭菌和真细菌相对含量更高(P<0.05).结论 非洲绿猴产丁酸盐的细菌相对含量更高,反映出其肠道免疫细胞稳态和黏膜完整性具有不同于食蟹猴的进化适应特征,为深入研究非洲绿猴对SIV感染不致病的相关机制奠定了基础.
    • Jayashree S. Nandi; Anil K. Chhangani; Shravan Singh Rathore; Bajrang Raj J. Mathur
    • 摘要: Highlight: The present report reveals for the first time natural lentiviral infection of wild Indian NHPs, rhesus monkeys (Macaca mulatta) and langurs (Semnopithecus entellus) by SIVs that are phylogenetically diverse from all known SIVs, including “SIVmac”, which infects captive rhesus monkeys. The novel SIVs are intriguingly homologous to HIV-1, based on serology and partial lentiviral genomic sequence analyses. Diverse lenti-viruses infect human and nonhuman primates (NHPs). There are more than 45 different “species-specific” simian immunodeficiency viruses (SIVs) that infect their cognate NHP hosts in natural habitats in Africa. Indian NHPs are not known to be infected by SIVs in the wild. Conventionally SIVs are named after their natural hosts, except for SIVmac, which infects captive rather than wild rhesus macaques. SIVmac is therefore a misnomer. It is a genetic variant of the African SIVsmm, which infects wild African sooty mangabey monkeys. SIVsmm is the progenitor of human immunodeficiency virus (HIV-2), while SIVcpz that infects wild chimpanzees is the progenitor of HIV-1. Although natural infections cannot be easily studied in wild NHP populations, we have previously reported co-infection of wild Indian NHPs by other retroviruses: simian retroviruses (SRVs) and Simian Foamy viruses (SFV). Apart from zoonosis, transmission of pathogens from humans to animals: anthroponosis, has also been reported in literature.
    • 本刊讯1
    • 摘要: 中国科学院广州生物医药与健康研究院等单位联合在艾滋病预防性疫苗研究中取得新进展,相关成果已以Immune protection of SIV challenge by PD-1 blockade during vaccination in rhesus monkeys为题发表。
    • 彭灵娟; 丛喆; 薛婧; 宋铭晶; 魏强
    • 摘要: 目的:研究SIV在感染CEMx174细胞过程中,SAMHD1在基因和蛋白水平的变化与病毒水平之间的相关性。方法 SIVmac239病毒感染CEMx174细胞后,每天收集上清和细胞,应用TaqMan探针实时荧光定量RT-PCR方法,检测细胞内SAMHD1 mRNA的相对表达量的变化;用Western blot检测SAMHD1蛋白与SIVmac239 P27蛋白表达量的变化,并分析其相关性。结果 CEMx174细胞感染SIVmac239后,细胞中的SAMHD1 mRNA基于内参基因GAPDH的相对表达量逐渐增加,前3 d分别增加了14%,16%,42%,随后开始迅速增加,第4天达到了200%,第6天更是达到了890%;细胞中SAMHD1蛋白的表达量在感染后第1、2天时变化不大,随后逐渐降低,到第5、6天时,几乎检测不到,呈现逐渐下降的趋势。结论 CEMx174细胞感染SIVmac239后,SAMHD1基因表达上调,与上清中病毒载量水平正相关,细胞内SAMHD1蛋白水平与SIVmac239 P27蛋白水平呈负相关。%Objective To explore the relationship between protein levels of SAMHD1 expression with viral load of SIV in the SIVmac239-infected CEMx174 cells.Methods CEMx174 cells were infected with SIVmac239, and the cells and supernatant were collected daily for analysis.The viral loads and the SAMHD1 mRNA level were detected by real-time RT-PCR and the level of P27 and SAMHD1 proteins were detected by Western blotting.Results The mRNA level of intracellular SAMHD1 gene was increased and SAMHD1 protein decreased gradually when CEMx174 cells were infected with SIVmac239.Conclusions There is a positive correlation between viral load in the supernatant and the mRNA level of SAMHD1, and a negative correlation between the increase of P27 protein and the decrease of SAMHD1 protein in the SIVmac239-infected CEMx174 cells.
    • 黄丹; 丛喆; 徐珮; 薛婧; 魏强
    • 摘要: 目的:比较游离病毒感染与T细胞介导的感染方式对SIV感染内皮细胞的影响,探索SIVmac239感染内皮细胞的主要途径,从而为SIV入侵血脑屏障的机制提供理论基础。方法采用游离SIV病毒直接感染内皮细胞和 SIV 感染的 CEMx174细胞与内皮细胞共培养的两种方式,通过巢式 PCR、间接免疫荧光法、Western blotting以及ELISA检测内皮细胞的感染程度。结果两种感染方式都能在内皮细胞内检测到前病毒DNA,感染细胞与内皮细胞共培养时,内皮细胞内前病毒DNA含量,SIV P27蛋白表达量和细胞培养上清液中P27含量远高于游离病毒直接感染的方式。结论细胞介导的感染方式相较于游离病毒直接感染方式对内皮细胞的感染能力更强,可能是SIV病毒入侵血脑屏障的主要途径。%Objective To compare the effects of two approaches of SIVmac239 infection in endothelial cells, directly by cell⁃free virus or by T cell⁃mediated infection, to explore the predominant approach of SIVmac239 infection in endothelial cells, and finally lay a theoretical foundation of the molecular mechanism of SIV viral disruption of the blood⁃brain barrier. Methods We adopted two distinct ways to infect endothelial cells. One was to directly infect the endothelial cells by cell⁃free virus, another was by co⁃culture of infected CEMx174 cells with the endothelial cells. The degree of infection in the endothelial cells was evaluated by nested⁃PCR, indirect immunofluorescence assay, Western blotting and ELISA assays. Results The provirus DNA was found in the endothelial cells infected in either way. However, the endothelial cells infected by co⁃culture with CEMx174 cells had a significantly higher amount of provirus DNA and higher expression of SIV P27 in the cells and in the supernatant than those in the ECs directly infected by cell⁃free virus. Conclusions The way of T cell⁃mediated infection substantially enhances the capacity of SIV infection of endothelial cells than the direct infection by cell⁃free virus. It indicates that the T cell⁃mediated infection may serve as the principal route of SIV disruption of the blood⁃brain barrier.
    • 李谨革; 龙敏; 王希; 董柯; 林芳; 刘冲; 张惠中
    • 摘要: Objective:To gain Her2/ECD-sf162/TM recombinant baculovirus,laiding a foundation for further study of Her2 virus like Particles vaccine that based on SIV Gag Protein. Methods:Her2/ECD -sf162/TM fusion gene recombinant PFastBac-1 exPression vector of Her2 extracellular domain and SIV enveloPe Protein sf162 trans-membrane domain was constructed,and then transformed into E. coli strain DH10Bac to gain recombinant bacmids, which then were transfected into insect cells to exPress recombinant baculovirus with bac-to-bac systerm. In turn, Western blot were Performed identificated the recombination. Results:Recombinant PFastBac -1 exPression vector was successfully constructed and high titer recombinant baculovirus which could imunoreacted with Her2 antibody were gained. Conclusion:Her2/ECD -sf162/TM recombinant baculovirus can be used to develoP Her2 virus like Particles vaccine.%目的:获得融合表达的Her2/ECD-sf162/TM杆状病毒,为后续基于SIV Gag蛋白的Her2病毒样颗粒疫苗的制备奠定实验基础。方法:将Her2胞外段基因与猴免疫缺陷病毒( simian immunodeficiency virus, SIV)包膜蛋白sf162跨膜区基因融合的Her2/ECD-sf162/TM PFastBac重组表达载体,转座大肠杆菌E. coli DH10Bac菌株,获得重组杆粒,在昆虫细胞中表达获得重组杆状病毒,Western blot方法对该病毒进行鉴定。结果:构建的Her2/ECD-sf162/TM杆状病毒表达载体经PCR鉴定正确,转染昆虫细胞后获得了重组杆状病毒,该融合杆状病毒蛋白可与抗Her2抗体发生免疫反应。结论:成功构建的Her2/ECD-sf162/TM杆状病毒可用于Her2病毒样颗粒疫苗的制备。
    • 摘要: H13进口模具钢,执行标准GB/T1299—2000。统一数字代号A20502,牌号4Cr5Mo SiV 1,是在碳工钢的基础上加入合金元素形成的钢种。电渣重熔钢,具有高的淬透性和抗热裂能力,含有较高的碳和钒。耐磨性好,韧性相对有所减弱,具有良好的耐热性,在较高温度时具有较好的强度和硬度,
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