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埃博拉病毒疫苗研究进展 总被引:2,自引:0,他引:2
埃博拉病毒是一种可引起人和非人灵长类动物出血热传染病的最为致命的烈性病毒,致死率可达90%。2014年在西非爆发的埃博拉疫情引起了全世界的关注。疫苗接种是预防和控制传染病最为常规和有效的方法,尽管目前还没有正式获得批准上市的埃博拉病毒疫苗,但是已有多个尚处于研究阶段的疫苗在非人灵长类动物上取得了很好的保护效果,并有几个已进入临床Ⅰ期试验阶段,有望尽快用于本次埃博拉疫情的防控。本文对目前处于研究阶段的多个类型的埃博拉病毒疫苗进行了综述,为相关研究人员提供参考。 相似文献
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埃博拉病毒能在人类和非人灵长类中引起严重的埃博拉出血热,病死率可高达90%,并且目前还没有针对埃博拉病毒有效的疫苗或者是治疗手段。面对埃博拉病毒带来的挑战,针对埃博拉病毒的相关研究已经成为病毒学的热点问题。其中,关于埃博拉病毒侵染细胞机制的科学研究对于开发病毒疫苗以及新型治疗药物有非常关键的作用。因此,本综述拟就埃博拉病毒侵染细胞机制方面的研究进展进行总结。 相似文献
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埃博拉出血热是由埃博拉病毒引起的一种急性出血性传染病,具有极高的传染性,致死率高达50%~88%,目前对埃博拉出血热的预防还极为困难,暂无有效的抗病毒药物和疫苗。构建埃博拉出血热的动物模型,对于病毒致病机理的了解和深入研究,以及治疗药物及疫苗的研发具有至关重要的作用。 相似文献
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《现代生物医学进展》2017,(23)
正在一项新的研究中,通过分析2013~2016年埃博拉病毒爆发的一名存活者的血液,研究人员发现首个天然的人抗体能够中和所有三种主要的致病性埃博拉病毒,并且保护动物免受它们的感染。这些发现可能导致人们开发出首个广泛有效的埃博拉病毒药物和疫苗。相关研究结果发表在Cell期刊上,论文标题为"Antibodies from a Human Survivor Define Sites of Vulnerability for Broad Protection against Ebolaviruses"。 相似文献
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Although the importance of the endosperm as a food store inmany angiosperm seeds is well known, its significance duringearly embryogenesis has been neglected. In many interspecifichybrids, and in some other situations, embryos do not developfully and abort. It has often been stated that this is causedby the endosperm failing to conduct sufficient nutrients tothe embryo, but seldom has it been suggested that the endospermactively controls most of the early stages of morphogenesisof the embryo. Information gleaned from a broad survey of theliterature, combined with additional evidence presented here,obtained fromSolanum incanumand interspecific hybrids, indicatethat the endosperm is dynamic and very active in regulatingearly embryo development. This requires highly integrated geneticcontrol of rapidly changing metabolism in the endosperm. Ininterspecific hybrids, lack of coordination may cause unbalancedproduction of growth regulating substances by the endospermand hence abortion of the embryo, or even unregulated productionof nucleases and proteases resulting firstly in autolysis ofthe endosperm and then digestion of the embryo. The endospermmay thus serve to detect inappropriate hybridization of speciesor ploidy levels and so prevent waste of resources by producingseeds that would result in sterile hybrids or unthrifty subsequentgenerations. This discriminatory function of the endosperm hasdiminished during evolution and domestication of the crop plantSolanummelongenaL.Copyright 1998 Annals of Botany Company Solanum, embryo morphogenesis, endosperm, hybrid, seed development. 相似文献
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Höpfl G Ogunshola O Gassmann M 《American journal of physiology. Regulatory, integrative and comparative physiology》2004,286(4):R608-R623
For most organisms oxygen is essential fo life. When oxygen levels drop below those required to maintain the minimum physiological oxygen requirement of an organism or tissue it is termed hypoxia. To counter act possible deleterious effects of such a state, an immediate molecular response is initiated causing adaptation responses aimed at cell survival. This response is mediated by the hypoxia-inducible factor-1 (HIF-1), which is a heterodimer consisting of an alpha- and a beta-subunit. HIF-1 alpha protein is stabilized under hypoxic conditions and therefore confers selectivity to this response. Hypoxia is characteristic of tumors, mainly because of impaired blood supply resulting from abnormal growth. Over the past few years enormous progress has been made in the attempt to understand how the activation of the physiological response to hypoxia influences neoplastic growth. In this review some aspects of HIF-1 pathway activation in tumors and the consequences for pathophysiology and treatment of neoplasia are discussed. 相似文献
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Michele Rivkin-Flsh 《Medical anthropology quarterly》2000,14(1):119-120
Pragmatic Women and Body Politics. Margaret Lock and Patricia A. Kaufert. eds. Cambridge, UK: Cambridge University Press, 1998. xii +364 pp.
Maternities and Modernities: Colonial and Postcolonial Experiences in Asia and the Pacific. Kalpana Ram and Margaret Jolly. eds. Cambridge, UK: Cambridge University Press, 1998. xiv. 305 pp. 相似文献
Maternities and Modernities: Colonial and Postcolonial Experiences in Asia and the Pacific. Kalpana Ram and Margaret Jolly. eds. Cambridge, UK: Cambridge University Press, 1998. xiv. 305 pp. 相似文献
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Studies of human constitution and mental features are traditionally among the main concepts of anthropological research. In
this research, we attempted to discover connections between morphological and constitutional features and self-esteem in children
and adolescents. Such a connection was discovered in some studied age groups. The obtained results could serve as a basis
for further studies in this field. 相似文献