کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2041504 1073163 2014 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Autophagy Impairment in Muscle Induces Neuromuscular Junction Degeneration and Precocious Aging
ترجمه فارسی عنوان
اختلال هوشیاری در عضلات باعث انقباض مجاری عصبی عضلانی و پیری زودرس می شود
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
چکیده انگلیسی


• Autophagy in muscle decreases with age, and rescue prevents muscle loss
• Autophagy inhibition in muscles shortens animal lifespan
• Autophagy is required to maintain a normal muscle-nerve interaction
• Autophagy impairment induces oxidation of contractile proteins, causing weakness

SummaryThe cellular basis of age-related tissue deterioration remains largely obscure. The ability to activate compensatory mechanisms in response to environmental stress is an important factor for survival and maintenance of cellular functions. Autophagy is activated both under short and prolonged stress and is required to clear the cell of dysfunctional organelles and altered proteins. We report that specific autophagy inhibition in muscle has a major impact on neuromuscular synaptic function and, consequently, on muscle strength, ultimately affecting the lifespan of animals. Inhibition of autophagy also exacerbates aging phenotypes in muscle, such as mitochondrial dysfunction, oxidative stress, and profound weakness. Mitochondrial dysfunction and oxidative stress directly affect acto-myosin interaction and force generation but show a limited effect on stability of neuromuscular synapses. These results demonstrate that age-related deterioration of synaptic structure and function is exacerbated by defective autophagy.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: - Volume 8, Issue 5, 11 September 2014, Pages 1509–1521
نویسندگان
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