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相关概念视频

Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

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The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
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Myocarditis I: Introduction01:21

Myocarditis I: Introduction

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Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
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Inflammatory Response01:28

Inflammatory Response

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An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
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Inflammation01:38

Inflammation

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Overview
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Inflammatory Response I: Vascular and Cellular01:30

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The inflammatory response is the body's defense against infection, injury, or irritation from bacteria, trauma, toxins, or heat. Inflammation helps locate and destroy pathogens and remove damaged tissue elements to heal the body. During this initial phase, fluid, blood products, and nutrients migrate to the injured area, resulting in redness, heat, swelling, ache, and loss of function. Moreover, signs of systemic inflammation include fever, increased WBC count, malaise, anorexia, nausea,...
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Satellite Stem Cells and Muscular Dystrophy01:21

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Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...
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相关实验视频

Updated: Sep 9, 2025

Induction and Assessment of Exertional Skeletal Muscle Damage in Humans
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Induction and Assessment of Exertional Skeletal Muscle Damage in Humans

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骨肌肉损伤和炎症

Tyrone A Washington1, Eleanor R Schrems2

  • 1Exercise Muscle Biology Laboratory, Exercise Science Research Center, Department of Health, Human Performance and Recreation, University of Arkansas, Fayetteville, AR, USA. tawashin@uark.edu.

Advances in experimental medicine and biology
|August 29, 2025
PubMed
概括

骨肌肉的再生取决于及时的炎症反应. 像中性粒细胞和巨细胞这样的免疫细胞对于清除残渣和促进受伤后的肌肉修复至关重要.

关键词:
伤害情况巨细胞自然杀手细胞中性粒细胞

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科学领域:

  • 肌肉生理和再生
  • 免疫学和炎症
  • 骨肌损伤模型

背景情况:

  • 骨肌肉具有显著的可塑性, 使其能够对各种有害刺激做出反应.
  • 肌肉损伤会引发炎症反应, 这对于有效的组织再生至关重要.
  • 标准化方法,包括奇特的运动和肌肉毒素注射,用于诱导骨肌肉损伤.

研究的目的:

  • 阐明炎症反应在骨肌肉再生中的作用.
  • 详细介绍肌肉损伤后免疫细胞的顺序透和功能.
  • 突显巨细胞在肌细胞形成过程中的重要作用.

主要方法:

  • 使用已知模型诱导骨肌损伤.
  • 监测免疫细胞的透和激活,特别是中性粒细胞和巨细胞.
  • 观察巨细胞从促炎性 (M1) 转变为抗炎性 (M2) 现型.

主要成果:

  • 中性粒细胞是最初的响应者, 清除碎片和招募巨细胞.
  • 巨细胞从M1表型转变为M2表型,有助于清除碎片.
  • M2巨对于启动肌肉修复所需的肌肉反应至关重要.

结论:

  • 这种炎症反应对于骨肌肉的最佳恢复至关重要.
  • 在炎症级联中发生的干扰,特别是巨分化,会损害肌肉再生.
  • 了解这一过程是制定肌肉损伤治疗策略的关键.