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子孢子

子孢子的相关文献在1986年到2022年内共计155篇,主要集中在畜牧、动物医学、狩猎、蚕、蜂、基础医学、内科学 等领域,其中期刊论文120篇、会议论文3篇、专利文献4036篇;相关期刊63种,包括寄生虫与医学昆虫学报、中国人兽共患病学报、广东蚕业等; 相关会议3种,包括第十一届北京畜牧兽医青年科技工作者“新思想 新观点 新方法”论坛、中国畜牧兽医学会家畜寄生虫学分会第七次代表大会暨第十二次学术研讨会、中国畜牧兽医学会中兽医学分会2016年学术研讨会暨中兽药新产品研发研讨会2016年第三次会议等;子孢子的相关文献由386位作者贡献,包括秦建华、黄复生、王兴相等。

子孢子—发文量

期刊论文>

论文:120 占比:2.89%

会议论文>

论文:3 占比:0.07%

专利文献>

论文:4036 占比:97.04%

总计:4159篇

子孢子—发文趋势图

子孢子

-研究学者

  • 秦建华
  • 黄复生
  • 王兴相
  • 何宏轩
  • 赵月兰
  • 况明书
  • 尹继刚
  • 张西臣
  • 张锡林
  • 李建华
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 姚鹏飞; 张鹏江; 孙杨
    • 摘要: 疟疾是由疟原虫引起的虫媒传染病,在全球尤其是热带地区肆虐流行,严重威胁着人类的健康.疟原虫主要在人类宿主体内发育繁殖,具有复杂的生命周期,包括疟原虫入侵、迁移、逃避免疫攻击、肝细胞内分裂增殖、入侵红细胞并在红细胞内大量繁殖、周期性释放等系列过程,最终导致疟疾患者症状周期性发作.本文重点围绕疟原虫(即子孢子、裂殖子)人体红细胞外、红细胞内入侵及发育过程的研究进展进行综述,为疟疾疫苗研发和疟疾防控救治提供参考.
    • 温富勇; 吴立佳
    • 摘要: 一、奶牛球虫病简介近年来,奶牛场的犊牛时有感染球虫病。断奶后的犊牛多发,出现腹泻、血样粪便,脱水严重可导致死亡。球虫虫卵感染主要多发生在温暖多雨的夏季。一些感染牛和隐性感染成年牛排出球虫卵囊,在温湿的环境中形成孢子化卵囊-感染性卵囊,污染的垫料、饲草和饮水被犊牛吞食,子孢子进入宿主肠上皮细胞内进行无性和有性繁殖导致犊牛出现腹泻、血便等症状。
    • 焦金英; 赵昕; 承南; 刘明江; 李金贵; 夏前贤
    • 摘要: In order to study the effect of artesunate (ARS) on E.tenella sporozoites invading cells,DF-1 cells and sporozoites were treated respectively by ARS.After porozoites labeled by special fluorescent dye,the apoptotic rate of DF-1 cells,mitochondrial membrane potential of sporozoites and invasion rate of sporozoites were detected by flow cytometry.The results showed that there was no significant difference in apoptotic rate of DF-1 cells between treated group by ARS (2.5 μmol/L) for 12 hrs and untreated treatment.Comparing to the control,ARS directly treated sporozoites for 2hrs,the mitochondrial membrane potential decreased by 33.97±8.40% and the invasion rate of the sporozoites declined by 4.13±3.97%.The cell were treated with ARS for 2hrs or 12hrs before adding the sporozoites,the invasion rate of the sporozoites accordingly decreased by 7.23±2.74% and 53.67±0.74%,respectively.The cells were mixed with sporozoites and then treated by ARS for 12hrs,the invasion rate of the sporozoites declined by 56.30± 1.81%.The cells and sporozoites were simultaneously treated by ARS and bongkerkic acid,the invasion rate enhanced by 9.70±0.60% (p<0.01).Therefore,the results indicated that ARS obviously inhibited the invasion rate of sporozoites mainly via acting with the sites on cellular membrane,and this action had a significant time-effect.This study provides experimental basis for research on anti coccidiosis mechanism of artemisinin drugs.%为研究青蒿琥酯(ARS)对柔嫩艾美耳球虫子孢子(SP)侵入DF-1细胞的影响,本实验利用ARS分别处理SP和DF-1细胞,前者经特定荧光标记后,流式细胞仪检测细胞凋亡、SP线粒体膜电位和侵入率.结果显示,ARS (2.5 μmol/L)处理DF-1细胞12 h与未处理组相比,细胞凋亡率无明显差异.与空白对照组相比,ARS直接处理SP2h,可使SP线粒体膜电位下降33.97±8.40%,并使其对细胞的侵入率下降4.13±3.97%.ARS直接处理细胞2h和12h后,再加入SP,则其侵入率分别下降7.23±2.74%和53.67±0.74%.细胞和SP混合后用ARS处理12 h,其侵入率下降56.30±1.81%.若在ARS处理的同时加入凋亡抑制剂米酵菌酸,可以使SP的侵入率提高9.70±0.60%(p<0.01).这表明ARS作用于细胞后对SP侵入的抑制作用更为明显,并具有显著的时间效应.本研究为青蒿素类药物抗球虫作用机理研究提供实验依据.
    • 孙树林
    • 摘要: 鸡的球虫病的对养鸡业危害较为严重的一种寄生虫性疾病,死亡率能达到20%~80%.由于易感性高、耐药性产生快等原因,增加了球虫病治疗的难度,要求在诊断、治疗及用药上都要有准确地把握,才能起到良好的效果.否则将造成严重的经济损失.
    • 陈文东
    • 摘要: 牛环形泰勒焦虫病由泰勒科泰勒属的环形泰勒焦虫(环形刚第焦虫)引起,是牛的一种季节性很强的地方性流行病,多呈急性过程,发病率高,死亡率大,使养牛业遭受很严重的损失。我国西北、华北、东北的一些省区都有流行。1生活史当感染泰勒焦虫的蜱在牛体吸血时,虫体(子孢子)随蜱的睡液进入牛体,主要在脾、淋巴结、肝等网状内皮组胞内进行裂体增殖,先形成大裂殖体(无性生殖体)。
    • 文圆; Dunachie S
    • 摘要: 对疟疾免疫的复杂性众所周知,然而抗疟疾免疫保护作用的明确的相关物还没有建立。如果能对疟疾疫苗候选物诱导的免疫标志物有更好的了解,则可大大有助于疫苗的开发、免疫原性的监测和疫苗现场效力的评估。作者曾报告过,用数种疫苗方案在牛津未接触过疟疾的健康受试者中,抗子孢子试验性攻击的完全的保护效力或部分保护效力。
    • 徐帅兵; 韩红玉; 黄兵; 赵其平; 董辉; 朱顺海; 崔晓霞; 谢雨翔; 唐敏; 杨志远
    • 摘要: In order to screen the proteins related to the invasion of Eimeria tenella sporozoites, the yeast two-hybrid cDNA library of E.tenella sporozoites was constructed in the present study. The total RNA was isolated from the sporozoites and used as the template to synthesize the ifrst-strand cDNAs. The dscDNAs were acquired by long-distance polymerase chain reaction (LD-PCR) using the ifrst-strand cDNAs as the template and purified with Chroma Spin TE-400 Column to remove less than 200 bp fragments. The dscDNA,pGADT7-Rec and CarrierDNA were co-transformed into Y187 yeast competent cells. The dscDNA were then connected with pGADT7-Rec by homologous recombination reaction to construct the yeast two-hybrid cDNA library of E. tenella sporozoites. The results showed that the conversion ratio and titer of the cDNA library were 4.33×105/μg pGADT7-Rec and 3.62×107cfu/mL, respectively. As demonstrated in PCR ampliifcation, the cDNA library contained approximately 93.75%recombinant clones and the inserted cDNA fragments were between 200 bp and 2000 bp. Furthermore, 5 gene fragments were obtained by PCR amplication using the cDNA library as template and 5 speciifc pairs of primers of E.tenella. Therefore, it concluded that a yeast two-hybrid cDNA library of the sporozoites was constructed for screening invasion-related interaction proteins of the sporozoites of E.tenella.%为了筛选柔嫩艾美耳球虫子孢子入侵相关的蛋白,利用酵母双杂交体系构建了柔嫩艾美耳球虫子孢子酵母双杂交cDNA文库。提取纯化的子孢子总RNA,经MMLV-RT反转录合成cDNA第一链后,利用LD-PCR扩增合成双链cDNA(ds cDNA), dscDNA经纯化柱CHROMA SPINT+TE-400 Columns纯化剔除小于200 bp的片段。将纯化后dscDNA、pGADT7-Rec及CarrierDNA共转化到已经制备好的酵母感受态细胞Y187中,dscDNA与pGADT7-Rec以同源重组的方式在细胞内进行连接,经过缺陷性培养基(SD/-Leu)的筛选得到酵母双杂交cDNA文库。结果显示,构建的柔嫩艾美耳球虫子孢子酵母双杂交cDNA文库的转化率为4.33×105/μg pGADT7-Rec,文库滴度为3.62×107 cfu/mL。随机挑取32个单克隆进行PCR检测,插入片段大小为200~2000 bp,重组率为93.75%,并以该文库作为模板,用柔嫩艾美耳球虫5对特异性引物进行PCR扩增,获得了这5个基因片段。结果表明成功构建了柔嫩艾美耳球虫子孢子酵母双杂交cDNA文库,为进一步筛选和研究球虫入侵互作蛋白奠定了基础。
    • 闫鑫磊; 计永胜; 田秀玲; 索静霞; 刘贤勇; 索勋
    • 摘要: Apicomplexan parasites infect nearly all vertebrate hosts even including humans and cause some severe diseases such as malaria, toxoplasmosis, cryptosporidiosis which are responsible for substantial economic losses. Like most intracellular pathogens, egress from host cells is a vital step of the apicomplexan parasites, which attracted attentions of many research groups.Unfortunately, as an important genus of Phylum Apicomplexa, little information of egress is known on Eimeria species which leads large amount of losses to poultry industry annually.In this report we used ethanol to induce egress of E.tenella M2e transgenic strain (EtM2e) sporozoites which express yellow fluorescent protein (YFP).Results showed that ethanol could induce egress of EtM2e sporozoites from infected Madin Derby Bovine Kidney ( MDBK) cells, and this process was depended on the mobility of the parasites.We also found that ethanol could also stimulate microneme protein discharge.Furthermore, both the course of egress and the secretion of microneme were controlled by the flux of intracellular Ca2+of the parasite.Taken together, our results preliminarily explained the mechanism of egress of eimerian parasites, which provided clues to the further study.%艾美耳球虫是一类重要的肠道病原,其裂殖生殖阶段的虫体逸出过程是造成畜禽肠道破坏的主要原因之一,但此逸出过程的机制仍鲜有报道。本研究以乙醇作为诱导剂研究柔嫩艾美耳球虫M2 e株子孢子从宿主细胞中逸出的机制。结果显示,乙醇可诱导子孢子从MDBK细胞中逸出,此逸出过程依赖于虫体的运动能力;同时,乙醇可激发子孢子逸出相关的微线体蛋白2( Mic2)的分泌释放。进一步实验证实,螯合虫体内部钙离子明显阻断了子孢子逸出及Mic2蛋白的释放。本研究初步证实了与柔嫩艾美耳球虫逸出相关的蛋白和离子,为深入解析球虫致病的分子机制、研发新型抗球虫药物提供了新的研究方向。
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