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J Periodontol:共生菌群对脂多糖牙周免疫应答的影响

2018-10-05 MedSci MedSci原创

共生菌群参与成熟免疫系统的发育。然而,尚不清楚共生菌群如何促进针对牙周病原体的免疫应答,包括对脂多糖(LPS)的反应。本研究的目的是评估在无菌(GF)和无特定病原体(SPF)小鼠中局部施用LPS后免疫应答的表达。

共生菌群参与成熟免疫系统的发育。然而,尚不清楚共生菌群如何促进针对牙周病原体的免疫应答,包括对脂多糖(LPS)的反应。本研究的目的是评估在无菌(GF)和无特定病原体(SPF)小鼠中局部施用LPS后免疫应答的表达。

方法:将8周龄的GF和SPF小鼠随机分成4组:基线组(n = 4 /组)和3个实验组(n = 6 /组)。实验组腭龈沟局部应用牙龈卟啉单胞菌LPS(10μg/μL)。在LPS应用(实验前)之前和应用后3小时、24小时或72小时进行取样。通过免疫组织化学评估牙周组织中的中性粒细胞,CD4 +和CD8 + T细胞的数量。通过实时PCR确定编码细胞因子,趋化因子和转录因子的基因的表达。

结果:与实验前的数量相比,SPF小鼠在LPS应用后3小时,牙周组织中CD4 + T细胞的数量增加(p <0.05)。在施用LPS后3小时,SPF小鼠中肿瘤坏死因子-α(Tnf-α)和叉头盒蛋白p3(Foxp3)的基因表达也显着高于GF小鼠(p <0.05)。在GF和SPF小鼠中,中性粒细胞的数量在24小时达到峰值。

与GF小鼠相比,暴露于LPS的SPF小鼠的牙周组织中CD4 + T细胞数量和Tnf-α和Foxp3基因表达增加。

原始出处:

Daiki Fukuhara, et al.Impact of commensal flora on periodontal immune response to lipopolysaccharide. Journal of  Periodontology. 2018 October. Doi:10.1002/JPER.17-0567

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    2018-11-23 feather89
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  6. [GetPortalCommentsPageByObjectIdResponse(id=1727665, encodeId=858b1e2766583, content=<a href='/topic/show?id=986913980dd' target=_blank style='color:#2F92EE;'>#PE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=71, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13980, encryptionId=986913980dd, topicName=PE)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f06c33759375, createdName=feather89, createdTime=Fri Nov 23 15:44:00 CST 2018, time=2018-11-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1944074, encodeId=46c419440e475, content=<a href='/topic/show?id=02c930028f2' target=_blank style='color:#2F92EE;'>#共生菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=30028, encryptionId=02c930028f2, topicName=共生菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e9ed371, createdName=楚秀娟, createdTime=Fri Sep 20 11:44:00 CST 2019, time=2019-09-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1400232, encodeId=01da14002326b, content=<a href='/topic/show?id=10cc2901458' target=_blank style='color:#2F92EE;'>#免疫应答#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=29014, encryptionId=10cc2901458, topicName=免疫应答)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7a602256775, createdName=clmlylxy, createdTime=Sun Oct 07 07:44:00 CST 2018, time=2018-10-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1429868, encodeId=21741429868f3, content=<a href='/topic/show?id=cc2584301d4' target=_blank style='color:#2F92EE;'>#脂多糖#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84301, encryptionId=cc2584301d4, topicName=脂多糖)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2f354234967, createdName=小刀医生, createdTime=Sun Oct 07 07:44:00 CST 2018, time=2018-10-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1451040, encodeId=4d85145104023, content=<a href='/topic/show?id=f0476e49582' target=_blank style='color:#2F92EE;'>#牙周#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67495, encryptionId=f0476e49582, topicName=牙周)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智慧医人, createdTime=Sun Oct 07 07:44:00 CST 2018, time=2018-10-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=348045, encodeId=cf7f3480450a, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=82311653708, createdName=医者仁心5538, createdTime=Fri Oct 05 17:40:57 CST 2018, time=2018-10-05, status=1, ipAttribution=)]
    2018-10-05 医者仁心5538

    学习了

    0

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