Radiology: I型胶原靶向MR成像探针(CM-101)对检出肝纤维化的价值

2018-01-29 shaosai MedSci原创

本研究旨在评价一种新型I型胶原靶向MR成像探针(CM-101)的生物学分布、代谢和药理动力学,评价其在动物模型中定量肝纤维化的价值,并将结果发表在Radiology上。

本研究旨在评价一种新型I型胶原靶向MR成像探针(CM-101)的生物学分布、代谢和药理动力学,评价其在动物模型中定量肝纤维化的价值,并将结果发表在Radiology上。

利用质谱分析法测量CM-101在小鼠中的生物学分布、药物动力学和稳定性。对小鼠进行胆管结扎(BDL)和安慰治疗的小鼠在术后19天进行MR扫描。对小鼠进行CCl4或运动干预,并在基线和1周进行7TMR扫描。在注射10 mol/kg CM-101前后进行磁共振成像。利用肝脏与肌肉组织对比噪声比变化(ΔCNR)进行肝脏纤维化定性分析。利用羟脯氨酸含量和天狼星染色分析肝组织。

结果为,CM-101出现快速的廓清(半衰期=6.8 minutes ± 2.4),主要由肾脏代谢。在注射剂量为[ID]/g ± 0.6经24小时后组织中含量较低(<3.9% injected dose [ID]/g ± 0.6),14天后残存更少(<0.33% ID/g ± 12),且在骨组织中残存微不足道(在第1天和14天分别为0.07% ID/g ± 0.02 and 0.010% ID/g ± 0.004)。ΔCNR在BDL小鼠(13.6 ± 3.2)中要明显高于安慰治疗的小鼠(5.7 ± 4.2),CCl4治疗的小鼠(18.3 ± 6.5)要高于基线时(5.2 ± 1.0)。

本研究表明,CM-101具有较快的血液廓清率、全身代谢,且在骨或其他组织中残存较少,对检出肝纤维化具有良好的价值。

原始出处:

Farrar CT, Gale EM, Kennan R. et al.CM-101: Type I Collagen-targeted MR Imaging Probe for Detection of Liver Fibrosis.Radiology.DOI: 10.1148/radiol.2017170595

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    2018-12-03 pyaili
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    2018-01-30 131****1460

    学习了受益匪浅

    0

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    2018-01-30 sunfeifeiyang

    0

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    2018-01-30 chunjianf

    学习了.谢谢分享

    0

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    2018-01-30 秀红

    学习了

    0

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    2018-01-30 yjs木玉

    好好好好好好好好

    0

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