Neurology:沿血管周围空间扩散张量成像(DTI-ALPS)揭示淋巴功能与神经心理、灰质体积、睡眠之间关联:睡眠健康对大脑健康意义重大

2022-01-08 Naomi MedSci原创

近日有研究人员利用“沿血管周围空间扩散张量成像分析”即(DTI-ALPS)指数对社区非痴呆老年人群的淋巴系统进行了评估,以期建立淋巴功能与睡眠、神经心理表现和灰质体积之间的联系。

      淋巴系统的发现为研究脑蛋白质稳态提供了一个新的视角,并为神经退行性疾病的预防及治疗提供了一个很有前途的靶点。这种高度组织化的液体运输系统包括脑脊液(CSF)沿动脉血管周围间隙(PVS)流入,并由水通道4(AQP4)水通道促进向脑间质转移。然后,脑脊液-间质液体被引导到静脉PVS,最终导致液体在脑实质内流动,从而清除代谢废物。

      啮齿动物的实验已经提供了对淋巴生理学的相当深入的认识,特别是关于睡眠和淋巴系统之间的关系。越来越多的证据表明,非快速眼动(NREM)睡眠有力地促进了淋巴液体的运输,而在清醒状态下则受到抑制。放射性核素示踪研究显示,麻醉或自然睡眠小鼠的淋巴流入比清醒小鼠增加了90%,这反过来又增强了它们大脑中淀粉样蛋白β和tau蛋白的清除。在啮齿动物和人类的研究中,睡眠障碍都会加速淀粉样蛋白β的沉积,这在阿尔茨海默病(AD)中可以看到。这些结果表明,淋巴功能障碍可能被用来解释睡眠障碍和AD病理之间的联系。

      尽管已经从动物研究中获得了大量知识,但仍有必要进行进一步的研究,以证实有关动物淋巴系统的发现是否适用于人类。对人类的小规模研究在一定程度上与啮齿类动物的研究结果相呼应,但目前评估工具(如鞘内注射造影剂)的侵袭性限制了人类对淋巴系统的全面研究。扩散磁共振成像(MRI)已经成为一种非侵入性的人类淋巴系统检查工具评估。Taoka等人提出了一种测量淋巴流量的方法,称为“沿血管周围空间扩散张量成像分析”(DTI-ALPS)指数,并发现其变化与AD患者的简易智力状态检查(MMSE)评分相关,被认为是反映淋巴功能障碍的指标。

      DTI-Alps为人类淋巴系统的非侵入性研究提供了一个机会,近日有研究人员利用该方法对社区非痴呆老年人群的淋巴系统进行了评估,以期建立淋巴功能与睡眠、神经心理表现和灰质体积之间的联系。

      这项横断面研究包括在2019年9月至2020年10月期间参与整合老年医学系统数据以探索健康老龄化解决方案研究的60岁或以上的个人。居住在社区的老年人在两个不同的地点登记。患有痴呆症、严重抑郁障碍和其他主要器官系统异常的参与者被排除在外。使用问卷和多导睡眠记录仪获取睡眠档案。实施的神经心理测试组合包括日常认知(ECOG)和建立阿尔茨海默病神经心理组合登记(CERAD-NB)联盟。根据磁共振成像(MRI)估计灰质体积。采用沿血管周围间隙扩散张量成像(DTI-Alps)指数作为淋巴功能的MRI标志物。

  • 研究共对84名参与者(平均年龄73.3[7.1]岁,47名女性[56.0%])进行了分析。
  • 多因素线性回归分析显示年龄(非标准化β,-0.0025[SE,0.0001];P=0.02)、N2睡眠时间(非标准化β,0.0002[SE,0.0001];P=0.04)和呼吸暂停低通气指数(非标准化β,-0.0011[SE,0.0005];P=0.03)与DTI-ALPS独立相关。
  • 较高的DTI-ALPS与较好的ECOG语言分数(非标准化β,-0.59[SE,0.28];P=0.04)和较好的CERAD-NB词表学习延迟回忆分测验分数(非标准化β,6.17[SE,2.31];P=0.009)。
  • 在控制了年龄、性别和总颅内容积后,较高的DTI-ALPS也与较高的灰质体积相关(非标准化β,107.00[SE,43.65];P=0.02)。

      该研究确定了淋巴功能和睡眠之间的显著关联,强调了睡眠对大脑健康的重要性。还揭示了DTI-Alps与神经心理表现和大脑灰质体积之间的关联,表明DTI-Alps有可能成为认知障碍的生物标志物。

文献来源:Siow TY, Toh CH, Hsu JL, Liu GH, Lee SH, Chen NH, Fu CJ, Castillo M, Fang JT. Association of Sleep, Neuropsychological Performance, and Gray Matter Volume With Glymphatic Function in Community-Dwelling Older Adults. Neurology. 2021 Dec 14:10.1212/WNL.0000000000013215. doi: 10.1212/WNL.0000000000013215. Epub ahead of print. PMID: 34906982.

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    2022-11-30 yinhl1978
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    2022-09-05 whlxd
  4. 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  5. 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  6. 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objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=45473, encryptionId=23e3454e353, topicName=学习)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a1646442901, createdName=ms4000001513304915, createdTime=Thu Jan 13 20:25:41 CST 2022, time=2022-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1182947, encodeId=bc9f118294e4f, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5ace5622459, createdName=ms3000001281480633, createdTime=Mon Jan 10 21:01:22 CST 2022, time=2022-01-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1448781, encodeId=73551448e81c6, content=<a href='/topic/show?id=4a6f1104071' target=_blank style='color:#2F92EE;'>#LPS#</a>, beContent=null, 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    2022-10-06 jiekemin
  7. 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topicName=扩散张量成像)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c48a270, createdName=Smile2680, createdTime=Sat Oct 15 01:26:33 CST 2022, time=2022-10-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1976158, encodeId=6cfa19e61587c, content=<a href='/topic/show?id=0f4ce297820' target=_blank style='color:#2F92EE;'>#睡眠健康#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72978, encryptionId=0f4ce297820, topicName=睡眠健康)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=316c73, createdName=caoliehu, createdTime=Wed Sep 14 10:26:33 CST 2022, time=2022-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2036028, encodeId=94bd20360282b, content=<a href='/topic/show?id=01482345fc' target=_blank style='color:#2F92EE;'>#ALP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2345, encryptionId=01482345fc, topicName=ALP)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5c82369, createdName=jiekemin, createdTime=Thu Oct 06 02:26:33 CST 2022, time=2022-10-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1184053, encodeId=30eb1184053f8, content=学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20211111/81c0b64745c644319545ec26d7ef0b34/9ddb2864d5df4dd9bf4305e380bffc96.jpg, createdBy=c7835705079, createdName=屋顶瞄爱赏月, createdTime=Thu Jan 13 22:25:27 CST 2022, time=2022-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1183997, encodeId=5ca7118399e8a, content=学习<a href='/topic/show?id=23e3454e353' target=_blank style='color:#2F92EE;'>#学习#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=45473, encryptionId=23e3454e353, topicName=学习)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a1646442901, createdName=ms4000001513304915, createdTime=Thu Jan 13 20:25:41 CST 2022, time=2022-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1182947, encodeId=bc9f118294e4f, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5ace5622459, createdName=ms3000001281480633, createdTime=Mon Jan 10 21:01:22 CST 2022, time=2022-01-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1448781, encodeId=73551448e81c6, content=<a href='/topic/show?id=4a6f1104071' target=_blank style='color:#2F92EE;'>#LPS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11040, encryptionId=4a6f1104071, topicName=LPS)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8e886, createdName=仁者大医, createdTime=Mon Jan 10 09:26:33 CST 2022, time=2022-01-10, status=1, ipAttribution=)]
    2022-01-13 屋顶瞄爱赏月

    学习学习

    0

  8. [GetPortalCommentsPageByObjectIdResponse(id=1971207, encodeId=01b619e120777, content=<a href='/topic/show?id=899a4386990' target=_blank style='color:#2F92EE;'>#大脑健康#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43869, encryptionId=899a4386990, topicName=大脑健康)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=69cb413, createdName=chengjn, createdTime=Tue Oct 18 14:26:33 CST 2022, time=2022-10-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2001675, encodeId=3bcb20016e59d, content=<a href='/topic/show?id=d5df12695e6' target=_blank style='color:#2F92EE;'>#Neurol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12695, encryptionId=d5df12695e6, topicName=Neurol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8217292, createdName=yinhl1978, createdTime=Wed Nov 30 06:26:33 CST 2022, time=2022-11-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1889365, encodeId=8583188936588, content=<a href='/topic/show?id=0e8e630161' target=_blank style='color:#2F92EE;'>#DTI#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6301, encryptionId=0e8e630161, topicName=DTI)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ef84111, createdName=whlxd, createdTime=Mon Sep 05 11:26:33 CST 2022, time=2022-09-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2027092, encodeId=1010202e092b2, content=<a href='/topic/show?id=90bc54e957b' target=_blank style='color:#2F92EE;'>#扩散张量成像#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54795, encryptionId=90bc54e957b, topicName=扩散张量成像)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c48a270, createdName=Smile2680, createdTime=Sat Oct 15 01:26:33 CST 2022, time=2022-10-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1976158, encodeId=6cfa19e61587c, content=<a href='/topic/show?id=0f4ce297820' target=_blank style='color:#2F92EE;'>#睡眠健康#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72978, encryptionId=0f4ce297820, topicName=睡眠健康)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=316c73, createdName=caoliehu, createdTime=Wed Sep 14 10:26:33 CST 2022, time=2022-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2036028, encodeId=94bd20360282b, content=<a href='/topic/show?id=01482345fc' target=_blank style='color:#2F92EE;'>#ALP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2345, encryptionId=01482345fc, topicName=ALP)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5c82369, createdName=jiekemin, createdTime=Thu Oct 06 02:26:33 CST 2022, time=2022-10-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1184053, encodeId=30eb1184053f8, content=学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20211111/81c0b64745c644319545ec26d7ef0b34/9ddb2864d5df4dd9bf4305e380bffc96.jpg, createdBy=c7835705079, createdName=屋顶瞄爱赏月, createdTime=Thu Jan 13 22:25:27 CST 2022, time=2022-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1183997, encodeId=5ca7118399e8a, content=学习<a href='/topic/show?id=23e3454e353' target=_blank style='color:#2F92EE;'>#学习#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=45473, encryptionId=23e3454e353, topicName=学习)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a1646442901, createdName=ms4000001513304915, createdTime=Thu Jan 13 20:25:41 CST 2022, time=2022-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1182947, encodeId=bc9f118294e4f, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5ace5622459, createdName=ms3000001281480633, createdTime=Mon Jan 10 21:01:22 CST 2022, time=2022-01-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1448781, encodeId=73551448e81c6, content=<a href='/topic/show?id=4a6f1104071' target=_blank style='color:#2F92EE;'>#LPS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11040, encryptionId=4a6f1104071, topicName=LPS)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8e886, createdName=仁者大医, createdTime=Mon Jan 10 09:26:33 CST 2022, time=2022-01-10, status=1, ipAttribution=)]
    2022-01-13 ms4000001513304915

    学习#学习#

    0

  9. [GetPortalCommentsPageByObjectIdResponse(id=1971207, encodeId=01b619e120777, content=<a href='/topic/show?id=899a4386990' target=_blank style='color:#2F92EE;'>#大脑健康#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43869, encryptionId=899a4386990, topicName=大脑健康)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=69cb413, createdName=chengjn, createdTime=Tue Oct 18 14:26:33 CST 2022, time=2022-10-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2001675, encodeId=3bcb20016e59d, content=<a href='/topic/show?id=d5df12695e6' target=_blank style='color:#2F92EE;'>#Neurol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12695, encryptionId=d5df12695e6, topicName=Neurol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8217292, 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topicName=扩散张量成像)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c48a270, createdName=Smile2680, createdTime=Sat Oct 15 01:26:33 CST 2022, time=2022-10-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1976158, encodeId=6cfa19e61587c, content=<a href='/topic/show?id=0f4ce297820' target=_blank style='color:#2F92EE;'>#睡眠健康#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72978, encryptionId=0f4ce297820, topicName=睡眠健康)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=316c73, createdName=caoliehu, createdTime=Wed Sep 14 10:26:33 CST 2022, time=2022-09-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2036028, encodeId=94bd20360282b, content=<a href='/topic/show?id=01482345fc' target=_blank style='color:#2F92EE;'>#ALP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2345, encryptionId=01482345fc, topicName=ALP)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5c82369, createdName=jiekemin, createdTime=Thu Oct 06 02:26:33 CST 2022, time=2022-10-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1184053, encodeId=30eb1184053f8, content=学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20211111/81c0b64745c644319545ec26d7ef0b34/9ddb2864d5df4dd9bf4305e380bffc96.jpg, createdBy=c7835705079, createdName=屋顶瞄爱赏月, createdTime=Thu Jan 13 22:25:27 CST 2022, time=2022-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1183997, encodeId=5ca7118399e8a, content=学习<a href='/topic/show?id=23e3454e353' target=_blank style='color:#2F92EE;'>#学习#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=45473, encryptionId=23e3454e353, topicName=学习)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a1646442901, createdName=ms4000001513304915, createdTime=Thu Jan 13 20:25:41 CST 2022, time=2022-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1182947, encodeId=bc9f118294e4f, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5ace5622459, createdName=ms3000001281480633, createdTime=Mon Jan 10 21:01:22 CST 2022, time=2022-01-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1448781, encodeId=73551448e81c6, content=<a href='/topic/show?id=4a6f1104071' target=_blank style='color:#2F92EE;'>#LPS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11040, encryptionId=4a6f1104071, topicName=LPS)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8e886, createdName=仁者大医, createdTime=Mon Jan 10 09:26:33 CST 2022, time=2022-01-10, status=1, ipAttribution=)]
    2022-01-10 ms3000001281480633

    学习了

    0

  10. 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objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11040, encryptionId=4a6f1104071, topicName=LPS)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8e886, createdName=仁者大医, createdTime=Mon Jan 10 09:26:33 CST 2022, time=2022-01-10, status=1, ipAttribution=)]
    2022-01-10 仁者大医

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Science新概念:淋巴系统在脱发和伤口愈合中起关键作用

williamhill asia 的皮肤每天在承受着各种磨损,好在它具有非凡的自我修复能力。干细胞遍布在被称为“生态位”的支持性微环境中,严格控制着修复过程。过多的组织可能会导致癌症等问题,而太少的组织又可能会加速衰老。但直到现在,科学家们还不确定干细胞本身是否可以通过重塑其生态位来指导其他干细胞形成新的皮肤。

应激反应或促使癌症通过淋巴系统扩散

一项基于小鼠的研究发现,应激激素通过影响淋巴系统—— 一种在全身传输组织液的网状管道,可导致癌症扩散。研究表明针对这种应激通路的疗法或有助于阻断癌细胞扩散。相关成果近日发表于《自然—通讯》。 有证据表明应激反应和癌症患者死亡的增加以及动物晚期癌症的发展有关。此前的研究表明应激激素会影响血管形成,这在疾病扩散中很重要。淋巴系统也能促进癌症扩散,但这是否受到应激反应的影响却不清楚。 澳大利亚维多利

Radiology:动态增强MR淋巴管造影在定量分析胸部淋巴流动模式中的价值

淋巴系统在体液调节以及向淋巴结和免疫系统的抗原呈递中起着至关重要的作用。然而,由于难以将造影剂引入中央淋巴系统,因此进一步阐述其对体液调节的作用仍具有挑战。

Nature: 推波助澜,淋巴系统可保护瘤细胞免于铁死亡,促进癌细胞转移

该研究显示淋巴中的黑素瘤细胞比血液中的黑素瘤细胞经历较少的氧化应激并形成更多的转移。

Elife:晚期心脏淋巴管系统支持成年斑马鱼的心脏功能和再生

一直以来,心脏淋巴管系统及其在心脏病患者中的潜在关键功能在很大程度上未没有得到充分的重视,部分原因是缺乏实验数据说明。

Radiology:淋巴系统有病变?用个MR新技术检查检查!

淋巴系统由淋巴、淋巴管、淋巴结与淋巴组织等组成:(扁桃腺、脾脏 、胸腺)所有的淋巴管最后汇集成两条主要的大淋巴管,包括胸管与右淋巴管再注入静脉而重新进入血液循环中。本研究旨在评价双弛豫对比(DARC)磁共振(MR)淋巴管显像与常规MR淋巴管显像在继发性淋巴水肿患者单显淋巴系统的临床价值,并将结果发表在Radiology上。

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European Radiology:两种典型抗抑郁药应用的抑郁症患者的影像学衍生内表型

有必要对不同患者的症状维度的共同和独特的神经生理机制进行比较,这有助于识别同质和异质的患者群体,并进一步为药物治疗的合理设计提供依据。

Neurology:脑小血管疾病患者降压强度与白质网完整性的关系

弥散张量成像(DTI)网络综合了脑小血管疾病(SVD)多种病理过程的损伤,可能是检测治疗效果的敏感指标。强化降低血压患者的小血管疾病导致改善脑网络功能时,评估的 DTI 为基础的脑网络指标。

Radiology:弥散张量成像在预测儿童身高方面的价值

临床上,身高的增长是通过间隔1年的连续身高测量来确定的,并以1年的身高增长来表示。总的身高增长是目前身高和最终身高之间的差异,即骨骼成熟时的身高。

Neurology:认知障碍与 Meynert 基底核和蓝斑核至经内嗅皮层中游离水(FW)的关联

近日,有研究人员通过临床诊断、认知表现、痴呆症严重程度和血浆神经丝轻链浓度评估,确定扩散微结构与阿尔茨海默病(AD)严重程度早期变化的关系。FW是与认知障碍相关的结构改变的非侵入早期生物标志物。

Pain:脑干三叉神经纤维微结构异常与三叉神经痛各亚型的治疗反应有关

这些新的发现证明了DTI作为一种客观、无创的治疗反应预测工具的价值,并阐明了TN人群中治疗反应者和无反应者的区别。

Stroke:老年脑内存在白质高信号及其半暗带的连续性损伤

目前大量证据显示临床上静止性脑损伤,包括MRI显示的梗死,液体衰减反转恢复(FLAIR)序列显示的白质高信号(WMH),弥散张量成像(DTI)显示的白质损伤以及T1加权MRI成像显示的组织萎缩等,自然而然在中年人中出现的越来越多,并且其与晚期多种神经系统疾病发生风险增高相关,包括卒中,痴呆以及认知功能下降。因此,预防或者延缓这些静止性脑损伤是目前研究的一个主要目标。WMH半暗带是一个新兴的术语,用