Nat Commun:乳腺癌药物或可抵御耐药性细菌的感染

2015-10-16 佚名 生物谷

图片来源:medicalxpress.com 刊登在国际杂志Nature Communications上的一项研究论文中,来自加利福尼亚大学等处的研究人员通过研究发现,乳腺癌药物他莫昔芬可以促进白血球细胞迅速增加,并且在实验室研究中可以对细菌快速产生反应,并且杀灭细菌,在小鼠机体中进行的他莫昔芬疗法可以有效增强小鼠机体清除耐药性MRSA的效率,并且有效降低小鼠的死亡率。 他莫昔芬可以靶向作

图片来源:medicalxpress.com

刊登在国际杂志Nature Communications上的一项研究论文中,来自加利福尼亚大学等处的研究人员通过研究发现,乳腺癌药物他莫昔芬可以促进白血球细胞迅速增加,并且在实验室研究中可以对细菌快速产生反应,并且杀灭细菌,在小鼠机体中进行的他莫昔芬疗法可以有效增强小鼠机体清除耐药性MRSA的效率,并且有效降低小鼠的死亡率。

他莫昔芬可以靶向作用雌激素受体,使其有效杀灭分子异常的乳腺癌细胞,但有些研究证据表明,他莫昔芬或许还具有其它有效的细胞效应,比如,他莫昔芬可以影响细胞产生脂肪分子的途径,比如鞘脂类等,而其并不依赖于雌激素受体。鞘脂,尤其是其中一种名为神经酰胺的分子在调节中性白细胞上扮演着重要角色。

Ross Corriden博士表示,他莫昔芬对神经酰胺类的效应可以帮助研究者们证实,当其给予病人治疗时,他莫昔芬就可以影响中性白细胞的行为,为了检测这一理论,研究人员利用他莫昔芬来孵育人类中性白细胞,相比较未处理的中性白细胞而言,研究者发现,他莫昔芬处理过的中性白细胞可以更好地向前移动及对细菌发生吞噬作用;同时他莫昔芬处理过的中性白细胞还可以产生三倍水平的中性粒细胞胞外诱捕网(NETs),其可以帮助中性白细胞来诱捕并杀灭病原体,利用靶向作用雌激素受体的的分子来作用中性白细胞并没有任何效应,这就表明,他莫昔芬可以以一种和雌激素受体不相关的途径来增强NET的产生,深入研究发现,他莫昔芬可以增强中性白细胞中的神经酰胺的水平。

随后研究人员在小鼠模型中检测了他莫昔芬增强免疫力的效应,利用他莫昔芬或对照分子治疗一小时后,研究者利用MRSA感染小鼠,随后再利用他莫昔芬或对照治疗小鼠,在感染8小时候连续对小鼠监测5天观察其表现。结果显示,他莫昔芬可以明显保护小鼠免于感染的发生,有大约35%的他莫昔芬治疗的小鼠都存活了5天。

本文研究中,研究者发现,他莫昔芬可以帮助有效抵御MRSA的感染,而结果因不同病原体而异,当感染不存在时,过多NETs的产生会对机体是有害的,有很多研究都发现过量NETs的产生和炎性疾病直接相关,比如脉管炎和支气管哮喘等。

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    2021-11-20 湘雅科教

    已阅,受益匪浅。

    0

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    2016-01-04 liuli5079
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    2015-11-13 liye789132251
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    2015-10-19 sunlong28

    赞一个~

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1072109, encodeId=4a9310e21091e, content=已阅,受益匪浅。, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6c905475903, createdName=湘雅科教, createdTime=Sat Nov 20 10:27:33 CST 2021, time=2021-11-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2086832, encodeId=36a6208683234, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, 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 Jan 04 10:07:00 CST 2016, time=2016-01-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880842, encodeId=77bd188084207, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Fri Nov 13 12:07:00 CST 2015, time=2015-11-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39563, encodeId=63b33956366, content=赞一个~, beContent=null, objectType=article, channel=null, level=null, likeNumber=128, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:20:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39564, encodeId=c7453956494, content=感谢分享~, beContent=null, objectType=article, channel=null, level=null, likeNumber=146, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:20:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39565, encodeId=af6439565b1, content=谢谢~, beContent=null, objectType=article, channel=null, level=null, likeNumber=137, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:20:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39566, encodeId=a0fe39566d9, content=为了积分我也是拼了~, beContent=null, objectType=article, channel=null, level=null, likeNumber=112, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:20:00 CST 2015, time=2015-10-19, status=1, ipAttribution=)]
    2015-10-19 sunlong28

    感谢分享~

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1072109, encodeId=4a9310e21091e, content=已阅,受益匪浅。, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6c905475903, createdName=湘雅科教, createdTime=Sat Nov 20 10:27:33 CST 2021, time=2021-11-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2086832, encodeId=36a6208683234, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, 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 Jan 04 10:07:00 CST 2016, time=2016-01-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880842, encodeId=77bd188084207, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Fri Nov 13 12:07:00 CST 2015, time=2015-11-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39563, encodeId=63b33956366, content=赞一个~, beContent=null, objectType=article, channel=null, level=null, likeNumber=128, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:20:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39564, encodeId=c7453956494, content=感谢分享~, beContent=null, objectType=article, channel=null, level=null, likeNumber=146, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:20:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39565, encodeId=af6439565b1, content=谢谢~, beContent=null, objectType=article, channel=null, level=null, likeNumber=137, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:20:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39566, encodeId=a0fe39566d9, content=为了积分我也是拼了~, beContent=null, objectType=article, channel=null, level=null, likeNumber=112, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:20:00 CST 2015, time=2015-10-19, status=1, ipAttribution=)]
    2015-10-19 sunlong28

    谢谢~

    0

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    2015-10-19 sunlong28

    为了积分我也是拼了~

    0

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