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首页> 外文期刊>The European Journal of Neuroscience >Impacts of lesion severity and tyrosine kinase receptor B deficiency on functional outcome of femoral nerve injury assessed by a novel single-frame motion analysis in mice.
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Impacts of lesion severity and tyrosine kinase receptor B deficiency on functional outcome of femoral nerve injury assessed by a novel single-frame motion analysis in mice.

机译:通过新颖的单帧运动分析在小鼠中评估病变严重程度和酪氨酸激酶受体B缺乏对股神经损伤功能预后的影响。

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摘要

Functional recovery after peripheral nerve injury is often poor. Comprehension of cellular and molecular mechanisms limiting or promoting restoration of function and design of efficient therapeutic approaches remain serious challenges for neuroscience and medicine. Progress has been restricted by the lack of reliable methods for evaluation of motor functions in laboratory animals. We describe a novel approach for assessment of muscle function in mice after femoral nerve damage, an injury causing impairment of knee extension. The functional deficit can be precisely estimated by angle and distance measurements on single video frames recorded during movements of the animals with or without body weight support. Using this method we describe here the precise time-course and degree of functional recovery after femoral nerve crush and transection. In addition, we show that restoration of function is considerably impaired in mice with a reduced expression level of the tyrosine kinase receptor B, a cognate receptor for the neurotrophin brain-derived neurotrophic factor. This finding is consistent with known functions of brain-derived neurotrophic factor and tyrosine kinase receptor B and demonstrates the potential of the method. The principles of the approach are highly relevant for the development of novel functional assays in other peripheral and, in particular, central nervous system injury paradigms.
机译:周围神经损伤后的功能恢复通常较差。理解限制或促进功能恢复的细胞和分子机制以及有效治疗方法的设计仍然是神经科学和医学的严峻挑战。由于缺乏可靠的评估实验动物运动功能的方法,进展受到了限制。我们描述了一种新的方法,用于评估股神经损伤(一种导致膝关节伸展受损的损伤)后的小鼠肌肉功能。通过在有或没有体重支持的动物运动过程中记录的单个视频帧上的角度和距离测量,可以精确估算功能缺陷。使用这种方法,我们在这里描述了股神经压迫和横切后的精确时程和功能恢复的程度。此外,我们显示,在酪氨酸激酶受体B(神经营养蛋白脑源性神经营养因子的同源受体)的表达水平降低的小鼠中,功能恢复显着受损。这一发现与脑源性神经营养因子和酪氨酸激酶受体B的已知功能一致,并证明了该方法的潜力。该方法的原理与其他外围尤其是中枢神经系统损伤范例中新型功能测定方法的开发高度相关。

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