NAT COMMUN:真菌导致脑部感染和记忆缺陷

2019-01-05 海北 MedSci原创

白色念珠菌的血源性感染是现代医学日益公认的并发症。最近,研究人员提出了低级念珠菌血症的小鼠模型,以确定播散性感染对脑功能和相关免疫决定因素的影响。

白色念珠菌的血源性感染是现代医学日益公认的并发症。最近,研究人员提出了低级念珠菌血症的小鼠模型,以确定播散性感染对脑功能和相关免疫决定因素的影响。

研究人员发现,静脉注射25,000个白色念珠菌细胞可以引起高度局部化的脑炎,其特征在于酵母聚集体周围活化的小神经胶质细胞和星形胶质细胞的积累,形成真菌诱导的神经胶质肉芽肿。淀粉样蛋白前体蛋白在这些肉芽肿的外周积聚,而切割的淀粉样蛋白β)肽在酵母细胞周围积聚。 

CNS定位的白色念珠菌进一步激活转录因子NF-κB,并诱导白细胞介素-1βIL-1β),IL-6和肿瘤坏死因子(TNF)的产生,肽增强BV-2细胞的吞噬和抗真菌活性。此外,感染白色念珠菌的小鼠表现出轻微的记忆障碍,可以通过清除真菌得到缓解。

该结果值得进一步研究,以了解慢性脑炎对认知和免疫功能的影响。


原始出处:

Yifan Wu et al. Microglia and amyloid precursor protein coordinate control of transient Candida cerebritis with memory deficits. NAT COMMUN, 2018; doi: https://doi.org/10.1038/s41467-018-07991-4


本文系williamhill asia 医学(MedSci)原创编译整理,转载需授权

版权声明:
本网站所有内容来源注明为“williamhill asia 医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于williamhill asia 医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“williamhill asia 医学”。其它来源的文章系转载文章,或“williamhill asia 号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与williamhill asia 联系,williamhill asia 将立即进行删除处理。
在此留言
评论区 (4)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=2087493, encodeId=4e41208e493c2, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Mon Oct 07 17:05:00 CST 2019, time=2019-10-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1883512, encodeId=b2231883512a0, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Jun 04 05:05:00 CST 2019, time=2019-06-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1353757, encodeId=a2511353e57f5, content=<a href='/topic/show?id=dddce266537' target=_blank style='color:#2F92EE;'>#真菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72665, encryptionId=dddce266537, topicName=真菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Mon Jan 07 06:05:00 CST 2019, time=2019-01-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=357322, encodeId=3ee835e322d8, content=吴亦凡?, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=19711706499, createdName=1de9282dm20(暂无匿称), createdTime=Sun Jan 06 10:41:06 CST 2019, time=2019-01-06, status=1, ipAttribution=)]
    2019-10-07 liuli5079
  2. [GetPortalCommentsPageByObjectIdResponse(id=2087493, encodeId=4e41208e493c2, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Mon Oct 07 17:05:00 CST 2019, time=2019-10-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1883512, encodeId=b2231883512a0, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Jun 04 05:05:00 CST 2019, time=2019-06-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1353757, encodeId=a2511353e57f5, content=<a href='/topic/show?id=dddce266537' target=_blank style='color:#2F92EE;'>#真菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72665, encryptionId=dddce266537, topicName=真菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Mon Jan 07 06:05:00 CST 2019, time=2019-01-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=357322, encodeId=3ee835e322d8, content=吴亦凡?, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=19711706499, createdName=1de9282dm20(暂无匿称), createdTime=Sun Jan 06 10:41:06 CST 2019, time=2019-01-06, status=1, ipAttribution=)]
    2019-06-04 liye789132251
  3. [GetPortalCommentsPageByObjectIdResponse(id=2087493, encodeId=4e41208e493c2, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Mon Oct 07 17:05:00 CST 2019, time=2019-10-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1883512, encodeId=b2231883512a0, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Jun 04 05:05:00 CST 2019, time=2019-06-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1353757, encodeId=a2511353e57f5, content=<a href='/topic/show?id=dddce266537' target=_blank style='color:#2F92EE;'>#真菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72665, encryptionId=dddce266537, topicName=真菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Mon Jan 07 06:05:00 CST 2019, time=2019-01-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=357322, encodeId=3ee835e322d8, content=吴亦凡?, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=19711706499, createdName=1de9282dm20(暂无匿称), createdTime=Sun Jan 06 10:41:06 CST 2019, time=2019-01-06, status=1, ipAttribution=)]
    2019-01-07 zhaojie88
  4. [GetPortalCommentsPageByObjectIdResponse(id=2087493, encodeId=4e41208e493c2, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Mon Oct 07 17:05:00 CST 2019, time=2019-10-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1883512, encodeId=b2231883512a0, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Tue Jun 04 05:05:00 CST 2019, time=2019-06-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1353757, encodeId=a2511353e57f5, content=<a href='/topic/show?id=dddce266537' target=_blank style='color:#2F92EE;'>#真菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72665, encryptionId=dddce266537, topicName=真菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Mon Jan 07 06:05:00 CST 2019, time=2019-01-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=357322, encodeId=3ee835e322d8, content=吴亦凡?, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=19711706499, createdName=1de9282dm20(暂无匿称), createdTime=Sun Jan 06 10:41:06 CST 2019, time=2019-01-06, status=1, ipAttribution=)]
    2019-01-06 1de9282dm20(暂无匿称)

    吴亦凡?

    0

相关威廉亚洲官网

病例:肺真菌感染切忌误诊

肺部真菌感染是由真菌感染引起的支气管-肺部疾病,包括原发性和继发性肺部真菌感染。肺真菌感染临床表现常无特异性,故容易误诊。以下就是一例误诊案例。 该患者为一个41岁男性。1个月前患者发现颈部、颌下及腋窝出现数个增大的淋巴结,其中颌下淋巴结有压痛。同时左胸部出现疼痛,按压时疼痛明显,但无放射痛,偶伴非刺激性咳嗽,无发热、头痛,无咳痰、咯血,口服头孢克洛治疗1周无效。在当地医院对下颌淋巴结穿

Nature:防止真菌感染的免疫机制

人体对外来感染产生抗性的基础在于正确识别微生物的入侵并且激发保护性免疫反应。例如,C-型凝集素 (C-type lectins) 受体能够识别真菌细胞壁中的保守碳水化合物,这对抗真菌免疫反应的激发非常重要。

Int J Biol Macromol:壳聚糖纳米颗粒可抑制全口义齿表面细菌和真菌的滋生

全口义齿上的细菌和真菌的生长牙科中所面临的最严重的问题之一。细菌和真菌在义齿组织调节剂的弹性衬垫表面上生长。然而,这个问题可以通过向组织调节剂中添加具有抗菌和抗真菌作用的纳米颗粒来解决。 细菌和真菌微生物培养后,将得到的悬浮液分别温育24和48小时。在培养条件下用含有壳聚糖纳米颗粒的组织调理剂进行。使用分光光度计评估培养基中测量微生物的生长速度。 结果显示,不同浓度的壳聚糖纳米粒子在24和48小时

Lancet Neurol:中枢神经系统真菌感染诊断和治疗的新近进展

2018年4月,发表于《Lancet Neurol》上的一项综述,描述了中枢神经系统(CNS)真菌感染诊断和治疗的最新进展。

mSphere:细菌之外,真菌也和肥胖相关

最近的研究显示,肠道微生物与肥胖现象息息相关。肥胖是全球日益增长的健康问题。其与心血管疾病的风险增加有关。但是,最近的关于微生物和代谢的研究主要局限在对细菌的分析。人们似乎不约而同地忽略了真菌对于健康代谢的潜在贡献。至今为止,几乎没有研究去探索真菌对于肥胖症的作用。

病例分享:由真菌引起的感染为何曾被怀疑为球菌性心内膜炎?可能导致该菌感染的危险因素有哪些?

老年女性因寒战、发热、咳嗽等症状就诊,入院之初曾考虑为社区获得性肺炎等,进行了抗感染治疗后效果却不佳。