In vivo Measurement of Knee Extensor Muscle Function in Mice.

In vivo Measurement of Knee Extensor Muscle Function in Mice.
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DOI:
10.3791/62211
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发表时间:
2021-03-04
期刊:
Journal of visualized experiments : JoVE
影响因子:
--
通讯作者:
Fry CS
Fry CS
中科院分区:
其他
文献类型:
--
作者:
Brightwell CR;Graber TG;Brightwell BD;Borkowski M;Noehren B;Fry CS

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骨骼肌可塑性在无数的条件和刺激介导并发功能适应,无论是积极的和消极的。在临床和研究实验室中,最大肌肉力量被广泛地纵向测量在人类中,与膝伸肌肌肉组织的最多报告的功能结果。膝关节伸肌复合体的病理学在衰老、骨科损伤、疾病和废用中有很好的记录;膝关节伸肌力量与功能能力和损伤风险密切相关,强调了可靠测量膝关节伸肌力量的重要性。临床前啮齿动物研究中膝关节伸肌强度的可重复体内评估为探索骨关节炎或膝关节损伤的研究提供了有价值的功能终点。我们报告了一个在体内和非侵入性的协议,反复测量等长峰强直扭矩的膝伸肌在小鼠随着时间的推移。我们证明了使用这种新方法测量膝伸肌力量的一致性,并在多只小鼠中重复评估,产生类似的结果。
Skeletal muscle plasticity in response to countless conditions and stimuli mediates concurrent functional adaptation, both negative and positive. In the clinic and the research laboratory, maximal muscular strength is widely measured longitudinally in humans, with knee extensor musculature the most reported functional outcome. Pathology of the knee extensor muscle complex is well documented in aging, orthopedic injury, disease, and disuse; knee extensor strength is closely related to functional capacity and injury risk, underscoring the importance of reliable measurement of knee extensor strength. Repeatable, in vivo assessment of knee extensor strength in pre-clinical rodent studies offers valuable functional endpoints for studies exploring osteoarthritis or knee injury. We report an in vivo and non-invasive protocol to repeatedly measure isometric peak tetanic torque of the knee extensors in mice across time. We demonstrate consistency using this novel method to measure knee extensor strength with repeated assessment in multiple mice producing similar results.
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