circulating myokines

循环肌动蛋白
  • 文章类型: Journal Article
    在部门间研究中心(CIR-Myo)的主持下,帕多瓦大学(意大利)继续进行了半个多世纪的骨骼肌研究。欧洲翻译Myology杂志(EJTM),最近也在A&CM-C翻译Myology基金会的支持下,帕多瓦,意大利。第30卷(1),2020年EJTM会议的摘要集开始,“2020年帕多瓦肌肉日:流动医学30年的转化研究”。这是一次国际会议,将于2020年3月18日至21日在意大利的EuganeiHills和Padova举行。摘要是转化研究和多维方法的优秀例子,需要分类和管理(在急性和慢性阶段)从神经跨越的流动性疾病,代谢和创伤综合征对衰老的生物过程。物理医学和康复的典型目标之一确实是减轻疼痛并增加活动能力,使残障人士能够自由行走,花园,然后再次开车。本摘要集的优秀内容反映了研究人员和临床医生谁是渴望在PaduaMuscleDays呈现他们的结果的高科学素质。一系列的EJTM通信也将增加这个初步证据。
    More than half a century of skeletal muscle research is continuing at Padua University (Italy) under the auspices of the Interdepartmental Research Centre of Myology (CIR-Myo), the European Journal of Translational Myology (EJTM) and recently also with the support of the A&CM-C Foundation for Translational Myology, Padova, Italy. The Volume 30(1), 2020 of the EJTM opens with the collection of abstracts for the conference \"2020 Padua Muscle Days: Mobility Medicine 30 years of Translational Research\". This is an international conference that will be held between March 18-21, 2020 in Euganei Hills and Padova in Italy. The abstracts are excellent examples of translational research and of the multidimensional approaches that are needed to classify and manage (in both the acute and chronic phases) diseases of Mobility that span from neurologic, metabolic and traumatic syndromes to the biological process of aging. One of the typical aim of Physical Medicine and Rehabilitation is indeed to reduce pain and increase mobility enough to enable impaired persons to walk freely, garden, and drive again. The excellent contents of this Collection of Abstracts reflect the high scientific caliber of researchers and clinicians who are eager to present their results at the PaduaMuscleDays. A series of EJTM Communications will also add to this preliminary evidence.
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  • 文章类型: Clinical Trial
    目的:有规律的抗阻运动训练和均衡饮食可以在分子水平上抵消与年龄相关的肌肉衰退。本研究的目的是探讨弹力带抗阻训练和营养补充对循环肌肉生长和降解因素的影响。住院老年人的身体表现和肌肉质量(MQ)。
    方法:在维也纳积极老龄化研究中,91名年龄在83.6(65.0-92.2)岁的女性被随机分配到三个干预组之一(RT,阻力训练;RTS,阻力训练加营养补充;CT,认知训练)。肌肉生长抑制素的循环水平,激活素A,卵泡抑素,在基线以及干预3和6个月后测试IGF-1和GDF-15以及MQ和功能参数。
    结果:6个月后,RT组(+14%)和RTS组(+12%)下肢MQ明显增加。用于椅台测试的RT和RTS组的性能得到改善(RT:+18%;RTS:+15%)。在干预的后期,仅在RT组中增加了卵泡抑素(18%),伴随着活化素A与卵泡抑素比率的降低(-7%)。IGF-1、肌肉生长抑制素和GDF-15水平不受干预影响。
    结论:我们的数据证实,即使在非常老的机构化女性中,力量训练也能改善身体表现和MQ。这种改善似乎是通过通过卵泡抑素阻断肌肉降解途径而不是通过IGF-1途径诱导肌肉生长来介导的。由于生物标志物的血浆水平反映了各种器官系统的整体状态,建议对组织水平进行未来研究。
    OBJECTIVE: Regular resistance exercise training and a balanced diet may counteract the age-related muscular decline on a molecular level. The aim of this study was to investigate the influence of elastic band resistance training and nutritional supplementation on circulating muscle growth and degradation factors, physical performance and muscle quality (MQ) of institutionalized elderly.
    METHODS: Within the Vienna Active Ageing Study, 91 women aged 83.6 (65.0-92.2) years were randomly assigned to one of the three intervention groups (RT, resistance training; RTS, resistance training plus nutritional supplementation; CT, cognitive training). Circulating levels of myostatin, activin A, follistatin, IGF-1 and GDF-15, as well as MQ and functional parameters were tested at baseline as well as after 3 and 6 months of intervention.
    RESULTS: MQ of lower extremities significantly increased in the RT group (+14 %) and RTS group (+12 %) after 6 months. Performance improved in the RT and RTS groups for chair stand test (RT: +18 %; RTS: +15 %). Follistatin increased only in the RT group (+18 %) in the latter phase of the intervention, accompanied by a decrease in the activin A-to-follistatin ratio (-7 %). IGF-1, myostatin and GDF-15 levels were not affected by the intervention.
    CONCLUSIONS: Our data confirm that strength training improves physical performance and MQ even in very old institutionalized women. This amelioration appears to be mediated by blocking muscle degradation pathways via follistatin rather than inducing muscle growth through the IGF-1 pathway. As plasma levels of biomarkers reflect an overall status of various organ systems, future studies of tissue levels are suggested.
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