Baidu
map

Gut:髓源性抑制细胞抑制在慢性急性发作性肝功能衰竭患者中的应用

2017-06-12 zhangfan MedSci原创

慢性急性发作性肝功能衰竭患者免疫抑制的细胞单核CD14+HLA-DR−骨髓衍生抑制细胞数量增加,导致T细胞功能和微生物先天免疫反应抑制并导致继发感染、疾病进展及预后变差。Toll样受体3激活可抑制上述过程具有潜在的免疫强化作用

慢性急性发作性肝功能衰竭(ACLF) 患者免疫麻痹可导致患者感染易感性和死亡率增加。研究发现免疫抑制单核CD14+HLA-DR−骨髓衍生抑制细胞(M-MDSCs) 会抑制免疫介导疾病的抗菌反应。近日研究人员就M-MDSC在ACLF患者中的应用前景开展研究。

研究招募了41名ACLF患者,25名健康对照者、22名肝硬化以及30名急性肝功能衰竭患者,对其分别进行M-MDSC分析,抑制T细胞活化研究以及先天免疫功能的评价(Toll样受体刺激及噬菌作用分析)。

研及发现,ACLF患者体循环中CD14+CD15−CD11b+HLA-DR− M-MDSCs数量显著上升。M-MDSCs显示出免疫抑制特性,显著减少T细胞增殖(P = 0.01),降低肿瘤坏死因子α/白细胞介素-6对Toll样受体(TLR)刺激的响应(全部p<0.01),减少大肠杆菌的细菌吞噬。持续性的HLA-DR低表达与二次感染和28天死亡率增加相关。体外研究表明,对TLR-2和TLR-4的反复刺激可导致M-MDSC表达增加,体内研究发现,TLR-3激动可激活HLA-DR的表达,激活先天免疫功能。

研究发现对于慢性急性发作性肝功能衰竭患者免疫抑制的细胞单核CD14+HLA-DR−骨髓衍生抑制细胞数量增加,导致T细胞功能和微生物先天免疫反应抑制并导致继发感染、疾病进展及预后变差。Toll样受体3激活可抑制上述过程具有潜在的免疫强化作用。

原始出处:

Christine Bernsmeier et al. CD14+CD15-HLA-DR- myeloid-derived suppressor cells impair antimicrobial responses in patients with acute-on-chronic liver failure. Gut. June 7 2017.

本文系梅斯医学(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“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。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“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”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我们联系,我们将立即进行删除处理。
在此留言
评论区 (4)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1944875, encodeId=7aa019448e5dc, content=<a href='/topic/show?id=948a81192ea' target=_blank style='color:#2F92EE;'>#肝功能衰竭#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81192, encryptionId=948a81192ea, topicName=肝功能衰竭)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=49ef408, createdName=hunizi005, createdTime=Thu Dec 28 15:47:00 CST 2017, time=2017-12-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1366698, encodeId=71de1366698e0, content=<a href='/topic/show?id=8b4181188f5' target=_blank style='color:#2F92EE;'>#肝功能#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81188, encryptionId=8b4181188f5, topicName=肝功能)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8942242, createdName=jj000001, createdTime=Wed Jun 14 06:47:00 CST 2017, time=2017-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1554290, encodeId=8fe015542908d, content=<a href='/topic/show?id=8402522319e' target=_blank style='color:#2F92EE;'>#急性发作#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=52231, encryptionId=8402522319e, topicName=急性发作)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=287314518946, createdName=anminleiryan, createdTime=Wed Jun 14 06:47:00 CST 2017, time=2017-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=210295, encodeId=672021029589, content=不错的,学习了!谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Tue Jun 13 18:52:30 CST 2017, time=2017-06-13, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1944875, encodeId=7aa019448e5dc, content=<a href='/topic/show?id=948a81192ea' target=_blank style='color:#2F92EE;'>#肝功能衰竭#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81192, encryptionId=948a81192ea, topicName=肝功能衰竭)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=49ef408, createdName=hunizi005, createdTime=Thu Dec 28 15:47:00 CST 2017, time=2017-12-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1366698, encodeId=71de1366698e0, content=<a href='/topic/show?id=8b4181188f5' target=_blank style='color:#2F92EE;'>#肝功能#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81188, encryptionId=8b4181188f5, topicName=肝功能)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8942242, createdName=jj000001, createdTime=Wed Jun 14 06:47:00 CST 2017, time=2017-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1554290, encodeId=8fe015542908d, content=<a href='/topic/show?id=8402522319e' target=_blank style='color:#2F92EE;'>#急性发作#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=52231, encryptionId=8402522319e, topicName=急性发作)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=287314518946, createdName=anminleiryan, createdTime=Wed Jun 14 06:47:00 CST 2017, time=2017-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=210295, encodeId=672021029589, content=不错的,学习了!谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Tue Jun 13 18:52:30 CST 2017, time=2017-06-13, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1944875, encodeId=7aa019448e5dc, content=<a href='/topic/show?id=948a81192ea' target=_blank style='color:#2F92EE;'>#肝功能衰竭#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81192, encryptionId=948a81192ea, topicName=肝功能衰竭)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=49ef408, createdName=hunizi005, createdTime=Thu Dec 28 15:47:00 CST 2017, time=2017-12-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1366698, encodeId=71de1366698e0, content=<a href='/topic/show?id=8b4181188f5' target=_blank style='color:#2F92EE;'>#肝功能#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81188, encryptionId=8b4181188f5, topicName=肝功能)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8942242, createdName=jj000001, createdTime=Wed Jun 14 06:47:00 CST 2017, time=2017-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1554290, encodeId=8fe015542908d, content=<a href='/topic/show?id=8402522319e' target=_blank style='color:#2F92EE;'>#急性发作#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=52231, encryptionId=8402522319e, topicName=急性发作)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=287314518946, createdName=anminleiryan, createdTime=Wed Jun 14 06:47:00 CST 2017, time=2017-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=210295, encodeId=672021029589, content=不错的,学习了!谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Tue Jun 13 18:52:30 CST 2017, time=2017-06-13, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1944875, encodeId=7aa019448e5dc, content=<a href='/topic/show?id=948a81192ea' target=_blank style='color:#2F92EE;'>#肝功能衰竭#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81192, encryptionId=948a81192ea, topicName=肝功能衰竭)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=49ef408, createdName=hunizi005, createdTime=Thu Dec 28 15:47:00 CST 2017, time=2017-12-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1366698, encodeId=71de1366698e0, content=<a href='/topic/show?id=8b4181188f5' target=_blank style='color:#2F92EE;'>#肝功能#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81188, encryptionId=8b4181188f5, topicName=肝功能)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8942242, createdName=jj000001, createdTime=Wed Jun 14 06:47:00 CST 2017, time=2017-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1554290, encodeId=8fe015542908d, content=<a href='/topic/show?id=8402522319e' target=_blank style='color:#2F92EE;'>#急性发作#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=52231, encryptionId=8402522319e, topicName=急性发作)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=287314518946, createdName=anminleiryan, createdTime=Wed Jun 14 06:47:00 CST 2017, time=2017-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=210295, encodeId=672021029589, content=不错的,学习了!谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Tue Jun 13 18:52:30 CST 2017, time=2017-06-13, status=1, ipAttribution=)]
    2017-06-13 虈亣靌

    不错的,学习了!谢谢分享!

    0

相关资讯

Gut:干细胞移植治疗暴发性肝衰竭取得新突破

在国家自然科学基金、国家科技重大专项、863计划等支持下,浙江大学医学院附属第一医院传染病诊治国家重点实验室李君教授课题组在干细胞移植治疗暴发性肝衰竭的机制研究方面取得重要进展,研究结果以"Quantitative evaluation of human bone mesenchymal stem cells rescuing fulminant hepatic failure in pigs"(

中德科学家合作发现肝功能恢复的“秘密机关”

2月18日,由上海交通大学医学院附属仁济医院与德国海德堡大学联合组建的“中德慢加急性肝衰竭研究合作团队”,在上海国际会议中心正式揭牌。该团队的最新研究发现,决定肝脏能否恢复功能的关键因素是“肝细胞的毛细胆管化”,这将有望降低终末期肝病患者的换肝率及死亡率。这项研究成果已在新近召开的亚洲-太平洋肝病年会上发布,得到了同行的广泛关注。

Nat Cell Biol:再生医学进步空间宽广,肝衰竭患者存活希望增加

在 Nature Cell Biology杂志中,研究人员描述了他们将肝干细胞移植到肝脏严重受损的小鼠体内后的情况。几个月后,肝脏一些主要部位的肝细胞得以再生。这一实验使得动物器官的结构和功能有改善的巨大空间。肝脏具有强大的自我修复能力,这是因为肝脏的组成细胞——肝细胞,可以在面对应激或损伤后迅速自我更新和修复。然而,如果发生了严重的肝脏损伤或者肝衰竭后,肝细胞则不能自我更新和修复。此外,在实验室

2013亚太临床微生物学和感染共识会议指南——肝衰竭的诊断和治疗发布

该指南的目的是促使临床医生更好的了解肝衰竭以及在肝衰竭的诊断和治疗过程提供指导意见,主要内容涉及:肝衰竭的定义和病因,发病机制,流行病学,分类以及诊断,组织病理学,治疗等。全文获取:下载地址:指南下载 (需要扣积分2分, 梅斯医学APP免积分下载)

认识对乙酰氨基酚导致的肝衰竭

对乙酰氨基酚(N-acetyl-p-aminophenol)是一种广泛使用的非处方解热镇痛药。推荐治疗量的对乙酰氨基酚通常被认为是安全的,但它越来越引起全世界的广泛关注,因为它被认为是一个导致急性肝功能衰竭(ALF)的常见原因。毒理简介对乙酰氨基酚从小肠吸收,口服片剂1-2小时或口服液30分钟后可达血清浓度峰值。检测到的水平一般不超过130umol/L,它依赖于有效的胃排空。它的作用机制并不完全清

我国肝衰竭的主要病因

肝衰竭是多种因素引起的肝细胞大量坏死或功能丧失,导致肝脏合成、解毒、排泄和生物转化等功能发生严重障碍或失代偿,出现以凝血机制障碍、黄疸、肝性脑病和腹水等为主要表现的一组临床症侯群。 肝衰竭的精确定义是基于对肝脏重要功能的深刻认识作出的,由于肝脏功能的复杂性、其强大的代偿能力,以及不同类型肝衰竭病理生理机制的差异,发生肝衰竭时并非意味着肝脏所有功能均丧失,定义强调肝衰竭并不是一个独立的

Baidu
map
Baidu
map
Baidu
map