Baidu
map

J Dent Res:精氨酸通过代谢和对微生物的调控促进pH内稳定

2017-05-10 lishiting MedSci原创

龋齿可以被描述为口腔微生物群落的生态失调,它是由产酸、耐酸和适应酸的菌属造成局部致病微环境,进而导致硬组织脱矿。口腔微生物生成碱,特别是通过精氨酸分解代谢通路,对维持斑块pH内稳定起到至关重要的作用。有证据显示,在洁齿剂中添加精氨酸对牙齿可以起到防龋效果。这篇研究的目的是通过使用高度反应体内口腔微生物的体外多种类口腔生态被膜模型,检测精氨酸疗法对口腔微生物的机械和生态影响以及其调控pH的动力学研究

龋齿可以被描述为口腔微生物群落的生态失调,它是由产酸、耐酸和适应酸的菌属造成局部致病微环境,进而导致硬组织脱矿。口腔微生物生成碱,特别是通过精氨酸分解代谢通路,对维持斑块pH内稳定起到至关重要的作用。有证据显示,在洁齿剂中添加精氨酸对牙齿可以起到防龋效果。这篇研究的目的是通过使用高度反应体内口腔微生物的体外多种类口腔生态被膜模型,检测精氨酸疗法对口腔微生物的机械和生态影响以及其调控pH的动力学研究。

研究从6名健康个体口内提取混合唾液过夜制成生物被膜,以此来反应生物被膜成熟的早期阶段。首先,研究者们检测了生物被膜细胞的精氨酸摄入以及所产生的代谢产物。随后,向生物被膜预先添加75 mM精氨酸,在0, 6, 20和48 h后再添加15 mM的蔗糖,检验精氨酸对pH动力学的影响。另外,在每个时间节点检测pH值,并且收集生物被膜进行16S序列分析和靶向精氨酸的定量分析,上清液用来进行蛋白组学研究。

结果显示,在生物被膜中仅添加蔗糖导致pH值从7持续降至4.5,而预先添加精氨酸,在6, 20, 和48 h后再施加蔗糖刺激则使pH值恢复较高水平。在生物被膜细胞中检测到精氨酸,表明其可以主动吸收;在上清液中检测到精氨酸分解代谢产物瓜氨酸,鸟氨酸和腐胺,表明其可以活性代谢。序列分析揭示了在添加精氨酸的生物被膜微生物群落结构的转变以及种属多样性的增加。

结论:研究表明,精氨酸通过重塑口腔微生物群落可以提高pH内稳定。

原始出处:

Agnello M, Cen L, et al. Arginine Improves pH Homeostasis via Metabolism and Microbiome Modulation. J Dent Res. 2017 May 1:22034517707512. doi: 10.1177/0022034517707512.

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=1824762, encodeId=8a131824e6250, content=<a href='/topic/show?id=702a5065860' target=_blank style='color:#2F92EE;'>#微生物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=79, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50658, encryptionId=702a5065860, topicName=微生物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0b7c20, createdName=wjcjjian, createdTime=Thu Feb 01 14:11:00 CST 2018, time=2018-02-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1928750, encodeId=b26c1928e5059, content=<a href='/topic/show?id=3ee5e6449ff' target=_blank style='color:#2F92EE;'>#精氨酸#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=76449, encryptionId=3ee5e6449ff, topicName=精氨酸)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=db5b227, createdName=gostraight, createdTime=Tue Nov 28 22:11:00 CST 2017, time=2017-11-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=196336, encodeId=17e1196336d1, content=学习了,谢谢作者分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3xJXLtMtt5B40XXuPjn9xn1rBhrM6fHLkX1hI86ZoWoPJkgDkZuJNKkBfBHOcRd1fAdezg7JlHNOokohdAp3WkI/0, createdBy=32c81964262, createdName=1e145228m78(暂无匿称), createdTime=Wed May 10 22:44:51 CST 2017, time=2017-05-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=196317, encodeId=d93b19631e5c, content=感谢分享一下!, beContent=null, objectType=article, channel=null, level=null, likeNumber=93, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=20971999626, createdName=laymankey, createdTime=Wed May 10 21:37:13 CST 2017, time=2017-05-10, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1824762, encodeId=8a131824e6250, content=<a href='/topic/show?id=702a5065860' target=_blank style='color:#2F92EE;'>#微生物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=79, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50658, encryptionId=702a5065860, topicName=微生物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0b7c20, createdName=wjcjjian, createdTime=Thu Feb 01 14:11:00 CST 2018, time=2018-02-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1928750, encodeId=b26c1928e5059, content=<a href='/topic/show?id=3ee5e6449ff' target=_blank style='color:#2F92EE;'>#精氨酸#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=76449, encryptionId=3ee5e6449ff, topicName=精氨酸)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=db5b227, createdName=gostraight, createdTime=Tue Nov 28 22:11:00 CST 2017, time=2017-11-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=196336, encodeId=17e1196336d1, content=学习了,谢谢作者分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3xJXLtMtt5B40XXuPjn9xn1rBhrM6fHLkX1hI86ZoWoPJkgDkZuJNKkBfBHOcRd1fAdezg7JlHNOokohdAp3WkI/0, createdBy=32c81964262, createdName=1e145228m78(暂无匿称), createdTime=Wed May 10 22:44:51 CST 2017, time=2017-05-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=196317, encodeId=d93b19631e5c, content=感谢分享一下!, beContent=null, objectType=article, channel=null, level=null, likeNumber=93, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=20971999626, createdName=laymankey, createdTime=Wed May 10 21:37:13 CST 2017, time=2017-05-10, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1824762, encodeId=8a131824e6250, content=<a href='/topic/show?id=702a5065860' target=_blank style='color:#2F92EE;'>#微生物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=79, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50658, encryptionId=702a5065860, topicName=微生物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0b7c20, createdName=wjcjjian, createdTime=Thu Feb 01 14:11:00 CST 2018, time=2018-02-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1928750, encodeId=b26c1928e5059, content=<a href='/topic/show?id=3ee5e6449ff' target=_blank style='color:#2F92EE;'>#精氨酸#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=76449, encryptionId=3ee5e6449ff, topicName=精氨酸)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=db5b227, createdName=gostraight, createdTime=Tue Nov 28 22:11:00 CST 2017, time=2017-11-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=196336, encodeId=17e1196336d1, content=学习了,谢谢作者分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3xJXLtMtt5B40XXuPjn9xn1rBhrM6fHLkX1hI86ZoWoPJkgDkZuJNKkBfBHOcRd1fAdezg7JlHNOokohdAp3WkI/0, createdBy=32c81964262, createdName=1e145228m78(暂无匿称), createdTime=Wed May 10 22:44:51 CST 2017, time=2017-05-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=196317, encodeId=d93b19631e5c, content=感谢分享一下!, beContent=null, objectType=article, channel=null, level=null, likeNumber=93, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=20971999626, createdName=laymankey, createdTime=Wed May 10 21:37:13 CST 2017, time=2017-05-10, status=1, ipAttribution=)]
    2017-05-10 1e145228m78(暂无匿称)

    学习了,谢谢作者分享!

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1824762, encodeId=8a131824e6250, content=<a href='/topic/show?id=702a5065860' target=_blank style='color:#2F92EE;'>#微生物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=79, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50658, encryptionId=702a5065860, topicName=微生物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0b7c20, createdName=wjcjjian, createdTime=Thu Feb 01 14:11:00 CST 2018, time=2018-02-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1928750, encodeId=b26c1928e5059, content=<a href='/topic/show?id=3ee5e6449ff' target=_blank style='color:#2F92EE;'>#精氨酸#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=76449, encryptionId=3ee5e6449ff, topicName=精氨酸)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=db5b227, createdName=gostraight, createdTime=Tue Nov 28 22:11:00 CST 2017, time=2017-11-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=196336, encodeId=17e1196336d1, content=学习了,谢谢作者分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3xJXLtMtt5B40XXuPjn9xn1rBhrM6fHLkX1hI86ZoWoPJkgDkZuJNKkBfBHOcRd1fAdezg7JlHNOokohdAp3WkI/0, createdBy=32c81964262, createdName=1e145228m78(暂无匿称), createdTime=Wed May 10 22:44:51 CST 2017, time=2017-05-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=196317, encodeId=d93b19631e5c, content=感谢分享一下!, beContent=null, objectType=article, channel=null, level=null, likeNumber=93, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=20971999626, createdName=laymankey, createdTime=Wed May 10 21:37:13 CST 2017, time=2017-05-10, status=1, ipAttribution=)]
    2017-05-10 laymankey

    感谢分享一下!

    0

相关资讯

PNAS:新药(ADI-PEG20)的抗癌新机制

加州大学戴维斯分校,台北医科大学和国家卫生研究院研究人员已发现了正处于临床研究阶段的癌症治疗药物(ADI-PEG20),杀死癌细胞的潜在新作用机制,研究揭示了该药物如何剥夺对细胞重要的关键氨基酸,特异性杀死肿瘤细胞。 他们的论文发表在PNAS杂志上。传统的癌症疗法包括化疗和放疗,但这往往有副作用。一种新出现的癌症治疗策略是“饿死”癌细胞,导致其死亡。利用正常细胞和肿瘤细胞不同的代谢需求,

PLoS ONE:精氨酸可改善口腔健康 预防牙周病发生

近日,发表在国际杂志PLoS ONE上的一篇研究论文中,来自密歇根大学等处的研究人员通过研究发现,食物中一种常见的天然氨基酸—精氨酸或可分解牙菌斑,这或许就可以帮助数百万的个体避免蛀牙及牙周病了。L-精氨酸一般存在于红肉中、鱼肉、家禽及乳制品中,其同时也被用作牙齿敏感的牙科产品中用以阻断牙菌斑的形成。研究者Rickard博士表示,细菌会很容易在表面聚集形成生物被膜,而牙菌斑就是一种生物被膜,生物被

Circulation:连接COX-2抑制剂&心血管功能障碍的桥梁---ADMA(一氧化氮合成酶抑制剂)

非甾体类抗炎药COX-2抑制剂能发挥抗炎作用,但是,COX-2抑制剂会打破体内促血栓和抗血栓之间的平衡,从而引起心血管副作用,主要是心肌梗死,血栓和/或动脉粥样硬化的增加。 COX-2调节肾功能的机制以及COX-2在肾脏和心血管组织中的关联并未被明确,COX-2对前列环素调节和其非甾体类抗炎药的心血管副作用备受争议,而且并没有生物标记物用于研究机非甾体类抗炎药诱导产生的心血管风险。伦敦帝国理

Baidu
map
Baidu
map
Baidu
map