Baidu
map

JID:接种HBV疫苗有助于在肝炎急性期控制病毒复制

2013-11-29 潘风雨无阻 dxy

自有效疫苗问世以来,乙肝的传播有所下降,但它仍是一个重要的全球健康问题。在乙肝病毒感染期,可以检测到乙肝表面抗原、核心抗体和表面抗体。但是在接触感染和血浆中检测到乙肝表面抗原之间有一段延迟,为期10-12周,之后初始免疫才识别乙肝病毒从而以适应性免疫反应来抑制病毒的复制。延迟期间,无任何临床表现,也无病毒或免疫介导的肝损伤现象。【原文下载】 如果想要有效控制病毒控制柄防止慢性感染,可能需要诱导早

自有效疫苗问世以来,乙肝的传播有所下降,但它仍是一个重要的全球健康问题。在乙肝病毒感染期,可以检测到乙肝表面抗原、核心抗体和表面抗体。但是在接触感染和血浆中检测到乙肝表面抗原之间有一段延迟,为期10-12周,之后初始免疫才识别乙肝病毒从而以适应性免疫反应来抑制病毒的复制。延迟期间,无任何临床表现,也无病毒或免疫介导的肝损伤现象。【原文下载

如果想要有效控制病毒控制柄防止慢性感染,可能需要诱导早期免疫反应。在感染急性期后,病毒通常被消灭,但是有一部分人群中持续存在乙肝病毒,出现慢性感染,并最终发展至肝硬化或肝细胞癌。虽然乙肝疫苗能够有效减少乙肝病毒感染率和乙肝病毒感染后期并发症的发生,但是接种疫苗的个体在病毒接触高风险的情况下,也能发生感染。为了验证先前的接种免疫通过早期诱导固有免疫和适应性免疫来抑制病毒复制的猜想,来自美国旧金山血液系统研究所的Sheila M.Keating等人进行了一项研究,研究结果在线发表在2013年11月22日的Journal of Infectious Diseases杂志上。研究发现,供血者接种HBV疫苗有助于控制肝炎急性期的病毒复制。

研究对象是14名急性感染患者(HBV DNA阳性/抗核抗体阴性),其中有6名供体先前接种过疫苗(anti-HBs+)。研究者比较了疫苗接种个体和未接种疫苗个体的病毒动力学和免疫反应差异,并检测HBV DNA、血清标志和39种细胞因子。

研究结果显示,在疫苗接种个体中,病毒载量上升比较迟缓,机体能较快地清除病毒。而在无疫苗接种个体中,诱导蛋白10(IP-10)、IL-10、MIP-1β和sIL-2Rα水平通常在病毒血症峰值时升高。与之相反,疫苗接种者在IL-10和IP-10反应上峰值出现较早,且峰值在病毒载量较低的时候出现,这与记忆性抗乙肝表面抗体反应和病毒血症清除相一致。

总之,在接种疫苗的人群中存在着更早的固有和适应性免疫,这或许可以解释疫苗突破性感染中发生抑制的病毒血症现象。尽管在有部分保护的疫苗接种者中发生突破性感染,但是疫苗接种很可能有助于早期控制病毒复制、限制免疫活化和防止临床上重要急性和慢性HBV感染的发展。

原文出处

Keating SM, Heitman JD, Wu S, Deng X, Stramer SL, Kuhns MC, Mullen C, Norris PJ, Busch MP.Cytokine and Chemokine Responses in the Acute Phase of Hepatitis B Virus Replication in Naive and Previously Vaccinated Blood and Plasma Donors.J Infect Dis. 2013 Nov 22.【原文下载

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=1678251, encodeId=2b3616e82515e, content=<a href='/topic/show?id=12025231333' target=_blank style='color:#2F92EE;'>#急性期#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=52313, encryptionId=12025231333, topicName=急性期)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7b8027680692, createdName=feifers, createdTime=Thu May 01 14:26:00 CST 2014, time=2014-05-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1836588, encodeId=6ed1183658891, content=<a href='/topic/show?id=f9d08524be' target=_blank style='color:#2F92EE;'>#HBV#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8524, encryptionId=f9d08524be, topicName=HBV)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e87531, createdName=klivis, createdTime=Fri Dec 13 02:26:00 CST 2013, time=2013-12-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2029768, encodeId=40bc2029e68de, content=<a href='/topic/show?id=d7b510298e3' target=_blank style='color:#2F92EE;'>#JID#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10298, encryptionId=d7b510298e3, topicName=JID)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/UdV6ialcayj7Qv8RQm1mVfNYPKxjiaolxwglAZpCo6CwjTicOroW2Xb0Kxnc65viaxGpkuqHW7WzzbYgRLw3qooDoA/132, createdBy=04c22500137, createdName=紫砂壶, createdTime=Fri Dec 13 21:26:00 CST 2013, time=2013-12-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1512346, encodeId=b44015123464a, content=<a href='/topic/show?id=6a15e09150c' target=_blank style='color:#2F92EE;'>#病毒复制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=70915, encryptionId=6a15e09150c, topicName=病毒复制)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1a2310462124, createdName=12498623m96暂无昵称, createdTime=Sun Dec 01 08:26:00 CST 2013, time=2013-12-01, status=1, ipAttribution=)]
    2014-05-01 feifers
  2. [GetPortalCommentsPageByObjectIdResponse(id=1678251, encodeId=2b3616e82515e, content=<a href='/topic/show?id=12025231333' target=_blank style='color:#2F92EE;'>#急性期#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=52313, encryptionId=12025231333, topicName=急性期)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7b8027680692, createdName=feifers, createdTime=Thu May 01 14:26:00 CST 2014, time=2014-05-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1836588, encodeId=6ed1183658891, content=<a href='/topic/show?id=f9d08524be' target=_blank style='color:#2F92EE;'>#HBV#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8524, encryptionId=f9d08524be, topicName=HBV)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e87531, createdName=klivis, createdTime=Fri Dec 13 02:26:00 CST 2013, time=2013-12-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2029768, encodeId=40bc2029e68de, content=<a href='/topic/show?id=d7b510298e3' target=_blank style='color:#2F92EE;'>#JID#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10298, encryptionId=d7b510298e3, topicName=JID)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/UdV6ialcayj7Qv8RQm1mVfNYPKxjiaolxwglAZpCo6CwjTicOroW2Xb0Kxnc65viaxGpkuqHW7WzzbYgRLw3qooDoA/132, createdBy=04c22500137, createdName=紫砂壶, createdTime=Fri Dec 13 21:26:00 CST 2013, time=2013-12-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1512346, encodeId=b44015123464a, content=<a href='/topic/show?id=6a15e09150c' target=_blank style='color:#2F92EE;'>#病毒复制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=70915, encryptionId=6a15e09150c, topicName=病毒复制)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1a2310462124, createdName=12498623m96暂无昵称, createdTime=Sun Dec 01 08:26:00 CST 2013, time=2013-12-01, status=1, ipAttribution=)]
    2013-12-13 klivis
  3. [GetPortalCommentsPageByObjectIdResponse(id=1678251, encodeId=2b3616e82515e, content=<a href='/topic/show?id=12025231333' target=_blank style='color:#2F92EE;'>#急性期#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=52313, encryptionId=12025231333, topicName=急性期)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7b8027680692, createdName=feifers, createdTime=Thu May 01 14:26:00 CST 2014, time=2014-05-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1836588, encodeId=6ed1183658891, content=<a href='/topic/show?id=f9d08524be' target=_blank style='color:#2F92EE;'>#HBV#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8524, encryptionId=f9d08524be, topicName=HBV)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e87531, createdName=klivis, createdTime=Fri Dec 13 02:26:00 CST 2013, time=2013-12-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2029768, encodeId=40bc2029e68de, content=<a href='/topic/show?id=d7b510298e3' target=_blank style='color:#2F92EE;'>#JID#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10298, encryptionId=d7b510298e3, topicName=JID)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/UdV6ialcayj7Qv8RQm1mVfNYPKxjiaolxwglAZpCo6CwjTicOroW2Xb0Kxnc65viaxGpkuqHW7WzzbYgRLw3qooDoA/132, createdBy=04c22500137, createdName=紫砂壶, createdTime=Fri Dec 13 21:26:00 CST 2013, time=2013-12-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1512346, encodeId=b44015123464a, content=<a href='/topic/show?id=6a15e09150c' target=_blank style='color:#2F92EE;'>#病毒复制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=70915, encryptionId=6a15e09150c, topicName=病毒复制)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1a2310462124, createdName=12498623m96暂无昵称, createdTime=Sun Dec 01 08:26:00 CST 2013, time=2013-12-01, status=1, ipAttribution=)]
    2013-12-13 紫砂壶
  4. [GetPortalCommentsPageByObjectIdResponse(id=1678251, encodeId=2b3616e82515e, content=<a href='/topic/show?id=12025231333' target=_blank style='color:#2F92EE;'>#急性期#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=52313, encryptionId=12025231333, topicName=急性期)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7b8027680692, createdName=feifers, createdTime=Thu May 01 14:26:00 CST 2014, time=2014-05-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1836588, encodeId=6ed1183658891, content=<a href='/topic/show?id=f9d08524be' target=_blank style='color:#2F92EE;'>#HBV#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8524, encryptionId=f9d08524be, topicName=HBV)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e87531, createdName=klivis, createdTime=Fri Dec 13 02:26:00 CST 2013, time=2013-12-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2029768, encodeId=40bc2029e68de, content=<a href='/topic/show?id=d7b510298e3' target=_blank style='color:#2F92EE;'>#JID#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10298, encryptionId=d7b510298e3, topicName=JID)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/UdV6ialcayj7Qv8RQm1mVfNYPKxjiaolxwglAZpCo6CwjTicOroW2Xb0Kxnc65viaxGpkuqHW7WzzbYgRLw3qooDoA/132, createdBy=04c22500137, createdName=紫砂壶, createdTime=Fri Dec 13 21:26:00 CST 2013, time=2013-12-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1512346, encodeId=b44015123464a, content=<a href='/topic/show?id=6a15e09150c' target=_blank style='color:#2F92EE;'>#病毒复制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=70915, encryptionId=6a15e09150c, topicName=病毒复制)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1a2310462124, createdName=12498623m96暂无昵称, createdTime=Sun Dec 01 08:26:00 CST 2013, time=2013-12-01, status=1, ipAttribution=)]
Baidu
map
Baidu
map
Baidu
map