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首页> 外文期刊>Ultrasound in Medicine and Biology >ULTRASOUND DETECTION OF ABNORMAL CEREBROVASCULAR MORPHOLOGY IN A MOUSE MODEL OF SICKLE CELL DISEASE BASED ON WAVE REFLECTION
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ULTRASOUND DETECTION OF ABNORMAL CEREBROVASCULAR MORPHOLOGY IN A MOUSE MODEL OF SICKLE CELL DISEASE BASED ON WAVE REFLECTION

机译:基于波反射的镰状细胞疾病小鼠模型中异常脑血管形态的超声波检测

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摘要

Sickle cell disease (SCD) is associated with a high risk of stroke, and affected individuals often have focal brain lesions termed silent cerebral infarcts. The mechanisms leading to these types of injuries are at present poorly understood. Our group has recently demonstrated a non-invasive measurement of cerebrovascular impedance and wave reflection in mice using high-frequency ultrasound in the common carotid artery. To better understand the pathophysiology in SCD, we used this approach in combination with micro-computed tomography to investigate changes in cerebrovascular morphology in the Townes mouse model of SCD. Relative to controls, the SCD mice demonstrated the following: (i) increased carotid artery diameter, blood flow and vessel wall thickness; (ii) elevated pulse wave velocity; (iii) increased reflection coefficient; and (iv) an increase in the total number of vessel segments in the brain. This study highlights the potential for wave reflection to aid the non-invasive clinical assessment of vascular pathology in SCD. (C) 2019 World Federation for Ultrasound in Medicine & Biology. All rights reserved.
机译:镰状细胞疾病(SCD)与中风的高风险有关,并且受影响的个体通常具有局灶性脑病变被称为沉默的脑梗塞。导致这些类型伤害的机制目前明白很差。我们的小组最近在常见的颈动脉中使用高频超声证明了在小鼠中脑血管阻抗和波浪反射的非侵入性测量。为了更好地了解SCD中的病理生理学,我们将这种方法与微计算断层扫描结合使用,以调查SCD小鼠模型中脑血管形态的变化。相对于对照,SCD小鼠证明以下:(i)颈动脉直径增加,血流和血管壁厚; (ii)脉搏波速度升高; (iii)增加反射系数; (iv)大脑中血管片段总数的增加。本研究突出了波浪反射的潜力,以帮助对SCD中的血管病理学的非侵袭性临床评估。 (c)2019年中国医学与生物学超声联联合会。版权所有。

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