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首页> 外文期刊>Translational Stroke Research >Ferumoxytol-Enhanced MRI to Image Inflammation Within Human Brain Arteriovenous Malformations: a Pilot Investigation
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Ferumoxytol-Enhanced MRI to Image Inflammation Within Human Brain Arteriovenous Malformations: a Pilot Investigation

机译:阿魏酸增强MRI对人脑动静脉畸形内图像炎症的影响:一项初步调查

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摘要

Inflammation cell infiltration and cytokine expression are seen in the vascular walls and intervening stroma of resected brain arteriovenous malformation (bAVM) specimens, even in unruptured and previously untreated lesions. Macrophages may play a critical role in bAVM progression to rupture and could serve as a marker for rupture risk. We assessed feasibility of imaging macrophages within the bAVM nidus using ferumoxytol-enhanced magnetic resonance imaging (MRI) in four patients with already diagnosed bAVMs using iron-sensitive imaging (ISI; T2* GE MRI sequence). Patients were imaged at baseline and at either 1 day (n = 2) or 5 days (n = 2) after infusion of 5 mg/kg of ferumoxytol. Residual intravascular ferumoxytol obscured evaluation for uptake in bAVM vascular walls and stroma at the 1-day time point. The two cases imaged at 5 days showed less intravascular tracer but had signal loss in the nidal region consistent with ferumoxytol localization. One case underwent surgical resection; there was prominent vascular wall CD68 staining. Ferumoxytol-enhanced MRI for assessing bAVM inflammatory cell burden appears feasible and has the potential to be developed as a biomarker to study lesional inflammatory events.
机译:在切除的脑动静脉畸形(bAVM)标本的血管壁和介入基质中可见炎症细胞浸润和细胞因子表达,即使在未破裂和先前未治疗的病变中也是如此。巨噬细胞可能在bAVM破裂过程中发挥关键作用,并可以作为破裂风险的标志。我们评估了四名使用铁敏成像(ISI; T2 * GE MRI序列)已诊断出bAVM的患者,使用阿魏酸增强磁共振成像(MRI)对bAVM nidus内巨噬细胞成像的可行性。在输注5 mg / kg阿魏酸后的第一天(n = 2)或5天(n = 2)对患者进行成像。残留的血管内阿魏酸在1天时间点模糊了bAVM血管壁和间质摄取的评估。在第5天成像的两个病例显示出较少的血管内示踪剂,但在病变区域具有与阿魏木酚定位一致的信号丢失。 1例行手术切除。显着的血管壁CD68染色。阿魏酸增强MRI用于评估bAVM炎性细胞负荷似乎是可行的,并且有可能被开发为研究病灶炎性事件的生物标志物。

著录项

  • 来源
    《Translational Stroke Research》 |2012年第s1期|166-173|共8页
  • 作者单位

    Department of Neurosurgery Carver College of Medicine University of Iowa Iowa City IA USA;

    Department of Radiology University of California San Francisco San Francisco CA USA;

    Department of Pathology University of California San Francisco San Francisco CA USA;

    Department of Radiology University of California San Francisco San Francisco CA USA;

    Center for Cerebrovascular Research Department of Anesthesia and Perioperative Care University of California San Francisco San Francisco CA USA;

    Department of Radiology University of California San Francisco San Francisco CA USA;

    Center for Cerebrovascular Research Department of Anesthesia and Perioperative Care University of California San Francisco San Francisco CA USA;

    Department of Radiology University of California San Francisco San Francisco CA USA;

    Department of Neurological Surgery University of California San Francisco San Francisco CA USA;

    Departments of Neurological Surgery and Neurology Oregon Health ampamp Science University Portland OR USA;

    Department of Radiology University of California San Francisco San Francisco CA USA;

    Center for Cerebrovascular Research Department of Anesthesia and Perioperative Care University of California San Francisco San Francisco CA USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Arteriovenous malformations; Inflammation; Magnetic resonance imaging; Ferumoxytol; USPIO;

    机译:动静脉畸形;炎症;磁共振成像;呋喃甲酚;USPIO;

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