Int J Nanomed:纳米材料联合银粒子可显著提高其抗菌效果

2017-08-14 MedSci MedSci原创

由于临床治疗中长期使用和滥用抗生素,使得抗生素耐药性成为一个亟需解决的问题。联合抗生素与银纳米颗粒的治疗是提高抗菌效果同时减少抗生素使用的一种有效方法。虽然体外研究已经证明该方法是有效的,但目前尚未进行体内试验。本文旨在探究大鼠感染模型中Ag局部给药并联合全身抗生素用药的作用。在钛植体表面制备载银纳米粒子二氧化钛纳米管,以用于银离子的缓释。分别在体外使用最低抑菌浓度(MIC)分析、纸片扩散法,以及

由于临床治疗中长期使用和滥用抗生素,使得抗生素耐药性成为一个亟需解决的问题。联合抗生素与银纳米颗粒的治疗是提高抗菌效果同时减少抗生素使用的一种有效方法。虽然体外研究已经证明该方法是有效的,但目前尚未进行体内试验。本文旨在探究大鼠感染模型中Ag局部给药并联合全身抗生素用药的作用。

在钛植体表面制备载银纳米粒子二氧化钛纳米管,以用于银离子的缓释。分别在体外使用最低抑菌浓度(MIC)分析、纸片扩散法,以及生物膜形成试验评估银联合抗生素万古霉素、利福平、庆大霉素、左氧氟沙星的抗菌性能。

结果显示,所有选择的细菌菌株,包括革兰氏阴性大肠杆菌(ATCC 25922),革兰阳性金黄色葡萄球菌(ATCC 25923),以及耐甲氧西林金黄色葡萄球菌(MRSA;ATCC 33591和ATCC 43300),均可观察到联合治疗的抗菌活性增强。此外,经过相对短(3周)的联合治疗,动物体内实验通过X-射线、组织学和免疫组化分析进一步证实了联合治疗的协同抗菌效果。

总之,结果表明,银纳米颗粒与抗生素联合作用可显著提高体内外抗菌效果,该方法或可应用于临床,以减少抗生素的使用,并缩短种植相关感染的用药时间。

原始出处:



Na Xu, Hao Cheng, et al., Silver-loaded nanotubular structures enhanced bactericidal efficiency of antibiotics with synergistic effect in vitro and in vivo. Int J Nanomedicine. 2017; 12: 731–743. Published online 2017 Jan 27. doi: 10.2147/IJN.S123648.

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=1330591, encodeId=13821330591e4, content=<a href='/topic/show?id=c6b455688d1' target=_blank style='color:#2F92EE;'>#抗菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55688, encryptionId=c6b455688d1, topicName=抗菌)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/2898B09F0DA89357D0D54A725E611AC7/100, createdBy=fdd32500040, createdName=ms7899726347904398, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1479474, encodeId=9d6514e94744a, content=<a href='/topic/show?id=1e30e739295' target=_blank style='color:#2F92EE;'>#纳米材料#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77392, encryptionId=1e30e739295, topicName=纳米材料)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cde87531954, createdName=12498710m13暂无昵称, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1593789, encodeId=18ab1593e897d, content=<a href='/topic/show?id=186755696e6' target=_blank style='color:#2F92EE;'>#抗菌效果#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55696, encryptionId=186755696e6, topicName=抗菌效果)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=05b918160916, createdName=DEXTER3145, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1607941, encodeId=a2d2160e94137, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1330591, encodeId=13821330591e4, content=<a href='/topic/show?id=c6b455688d1' target=_blank style='color:#2F92EE;'>#抗菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55688, encryptionId=c6b455688d1, topicName=抗菌)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/2898B09F0DA89357D0D54A725E611AC7/100, createdBy=fdd32500040, createdName=ms7899726347904398, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1479474, encodeId=9d6514e94744a, content=<a href='/topic/show?id=1e30e739295' target=_blank style='color:#2F92EE;'>#纳米材料#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77392, encryptionId=1e30e739295, topicName=纳米材料)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cde87531954, createdName=12498710m13暂无昵称, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1593789, encodeId=18ab1593e897d, content=<a href='/topic/show?id=186755696e6' target=_blank style='color:#2F92EE;'>#抗菌效果#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55696, encryptionId=186755696e6, topicName=抗菌效果)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=05b918160916, createdName=DEXTER3145, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1607941, encodeId=a2d2160e94137, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1330591, encodeId=13821330591e4, content=<a href='/topic/show?id=c6b455688d1' target=_blank style='color:#2F92EE;'>#抗菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55688, encryptionId=c6b455688d1, topicName=抗菌)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/2898B09F0DA89357D0D54A725E611AC7/100, createdBy=fdd32500040, createdName=ms7899726347904398, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1479474, encodeId=9d6514e94744a, content=<a href='/topic/show?id=1e30e739295' target=_blank style='color:#2F92EE;'>#纳米材料#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77392, encryptionId=1e30e739295, topicName=纳米材料)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cde87531954, createdName=12498710m13暂无昵称, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1593789, encodeId=18ab1593e897d, content=<a href='/topic/show?id=186755696e6' target=_blank style='color:#2F92EE;'>#抗菌效果#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55696, encryptionId=186755696e6, topicName=抗菌效果)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=05b918160916, createdName=DEXTER3145, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1607941, encodeId=a2d2160e94137, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1330591, encodeId=13821330591e4, content=<a href='/topic/show?id=c6b455688d1' target=_blank style='color:#2F92EE;'>#抗菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55688, encryptionId=c6b455688d1, topicName=抗菌)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/2898B09F0DA89357D0D54A725E611AC7/100, createdBy=fdd32500040, createdName=ms7899726347904398, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1479474, encodeId=9d6514e94744a, content=<a href='/topic/show?id=1e30e739295' target=_blank style='color:#2F92EE;'>#纳米材料#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77392, encryptionId=1e30e739295, topicName=纳米材料)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cde87531954, createdName=12498710m13暂无昵称, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1593789, encodeId=18ab1593e897d, content=<a href='/topic/show?id=186755696e6' target=_blank style='color:#2F92EE;'>#抗菌效果#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55696, encryptionId=186755696e6, topicName=抗菌效果)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=05b918160916, createdName=DEXTER3145, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1607941, encodeId=a2d2160e94137, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Wed Aug 16 07:43:00 CST 2017, time=2017-08-16, status=1, ipAttribution=)]

相关资讯

银或可开发成有效的抗癌化疗药物

顺铂是临床癌症治疗中的常用化学药物,具有较高疗效,其常见副作用包括恶心、呕吐、肾功能损害等。对于肿瘤病人而言,化疗是一痛苦过程。因此寻找高效且低毒的抗肿瘤药物是当前肿瘤研究者们最迫切的任务之一。 近日,英国利兹大学研究人员在Dalton Transactions杂志上发表文章称:某些特殊的银化合物对癌细胞的毒性与铂类化疗药物对肿瘤细胞的毒性相似。 银的最重要的化合物是硝酸银。在医疗上,常用硝酸

Sci Rep:氧化石墨烯联合银粒子可有效杀灭耐药菌

研究已经证实氧化石墨烯(rGO)是一种很有前景的抗菌材料,通过添加纳米银粒子(nAg)可以进一步提高其抗菌作用。本研究旨在探究rGO-nAg纳米复合材料对几种重要的多重耐药菌的作用,包括革兰氏阳性球菌-金黄色葡萄球菌和革兰氏阴性杆菌-大肠杆菌和奇异变形杆菌。结果显示,在相同的浓度(100μg/ ml)下,rGO-nAg纳米复合材料对三种致病菌的杀菌能力明显强于rGO和nAg。对奇异变形杆菌和金黄色

Nat Mater:新型银纳米颗粒直击肿瘤细胞

近日,刊登在国际杂志Nature Materials上的一篇研究论文中,来自加州大学圣巴巴拉分校的研究人员通过研究设计出了一种新型的球状纳米颗粒,其主要由银组成,球状表面包被着一层肽,可以使其对肿瘤细胞进行靶向作用;这种新型纳米颗粒的外壳和内容物并不可拆分,因此不能靶向攻击肿瘤细胞的纳米颗粒就不会被消除和破坏掉。移除不能渗透靶向细胞的纳米颗粒的方法是特殊的,研究者Braun说道,通过对那些可以进入