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Sci Rep:对高胰岛素血症可嫁接免疫缺陷小鼠模型的一些研究看法

2017-04-10 AlexYang MedSci原创

高胰岛素血症、肥胖和血脂异常是许多癌症独立、聚合风险因素。最近,研究人员调查了适用于人体组织异体种植的两个免疫缺陷小鼠株系((NOD/SCID 和 Rag1-/-)中,23%西方高脂肪饮食(HFD)的长期影响,以及饮食诱导的高胰岛素血症对人类前列腺癌细胞系异种种植生长的影响。研究人员发现,断奶16周和23周后,Rag1-/- 和 NOD/SCID HFD喂养的小鼠表现出了在葡萄糖耐受性中饮食诱导的

高胰岛素血症、肥胖和血脂异常是许多癌症独立、聚合风险因素。最近,研究人员调查了适用于人体组织异体种植的两个免疫缺陷小鼠株系((NOD/SCID 和 Rag1-/-)中,23%西方高脂肪饮食(HFD)的长期影响,以及饮食诱导的高胰岛素血症对人类前列腺癌细胞系异种种植生长的影响。

研究人员发现,断奶16周和23周后,Rag1-/- 和 NOD/SCID HFD喂养的小鼠表现出了在葡萄糖耐受性中饮食诱导的损伤。与低脂肪喂养的小鼠比较(0.71±0.12ng/ml 和 2.91±0.42 HOMA-IR),Rag1-/-小鼠表现出了显着的更高水平的空腹胰岛素水平((2.16±1.01ng/ml, P=0.01))和增强了的胰岛素抵抗性(6.70±1.68 HOMA-IR, P=0.01)。然而,该现象在NOD/SCID株系中并未观察到。研究人员还发现,脂肪肝在Rag1-/- HFD喂养的小鼠中要比NOD/SCID小鼠中更加普遍,并且肌肉细胞内的脂肪贮存在Rag1-/- HFD小鼠中增加,而在NOD/SCID小鼠中并未增加。另外,在Rag1-/-HFD喂养的小鼠中,和低脂肪喂养的小鼠比较,LNCaP异种种植肿瘤生长的更快。研究人员指出,该研究是首次描述在两个适用于异体种植研究的小鼠株系中,长期西方HFD喂养对代谢的影响。研究最后指出,Rag1-/- 小鼠是研究癌症和高胰岛素血症关系合适的、并且是新的异种种植模型。

原始出处:

Michelle L. Maugham, Patrick B. Thomas, Gabrielle J. Crisp et al. Insights from engraftable immunodeficient mouse models of hyperinsulinaemia. Sci Rep. 28 March 2017. doi:10.1038/s41598-017-00443-x.

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    2017-10-21 baoya
  2. [GetPortalCommentsPageByObjectIdResponse(id=1749710, encodeId=a67b1e4971031, content=<a href='/topic/show?id=be7c8385345' target=_blank style='color:#2F92EE;'>#胰岛#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=83853, encryptionId=be7c8385345, topicName=胰岛)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a7a536274692, createdName=baoya, createdTime=Sat Oct 21 18:49:00 CST 2017, time=2017-10-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=187455, encodeId=e79b18e45563, content=:不错的方式,努力学习,刻苦专研,不断总结出来新经验。, beContent=null, objectType=article, channel=null, level=null, likeNumber=109, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Fri Apr 14 21:46:49 CST 2017, time=2017-04-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1436750, encodeId=61a71436e50ae, content=<a href='/topic/show?id=a9424e199a5' target=_blank style='color:#2F92EE;'>#小鼠模型#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=47199, encryptionId=a9424e199a5, topicName=小鼠模型)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=zhouqu_8, createdTime=Wed Apr 12 12:49:00 CST 2017, time=2017-04-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1488960, encodeId=b71214889602e, content=<a href='/topic/show?id=7df32913871' target=_blank style='color:#2F92EE;'>#免疫缺陷#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=29138, encryptionId=7df32913871, topicName=免疫缺陷)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=631b8488299, createdName=rebeccajiejie, createdTime=Wed Apr 12 12:49:00 CST 2017, time=2017-04-12, status=1, ipAttribution=)]
    2017-04-14 虈亣靌

    :不错的方式,努力学习,刻苦专研,不断总结出来新经验。

    0

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