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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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关于杜琴氏肌肉缩的证据 新生儿查 新生儿查

Alex R Kemper1, Wendy K K Lam2, Jelili Ojodu3

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科学领域:

  • 遗传学 是一个遗传学.
  • 神经肌肉疾病 神经肌肉疾病
  • 公共卫生 公共卫生

背景情况:

  • 杜氏肌肉发育不良 (DMD) 和贝克尔肌肉发育不良 (BMD) 是由DMD基因变异引起的X链遗传疾病.
  • 大约每1万名新生男婴中就有2名患有DMD,导致肌肉逐渐衰弱和过早死亡,通常是由于呼吸道或心脏问题.
  • 美国的平均诊断年龄为4.5-5岁,由于有针对性疗法的可用性和诊断旅程的挑战,促使人们倡导新生儿查 (NBS).

研究的目的:

  • 审查当前的情况,以及实施杜氏肌肉发育不良症新生儿查的理由.
  • 讨论通过NBS早期识别的诊断方法,挑战和潜在益处.
  • 将NBS置于DMD不断变化的治疗范式中的背景.

主要方法:

  • 审查现有的文献和倡导DMDNBS.
  • 用于查的生物化学标记物 (肌酸激酶,CK-MM) 的描述.
  • 对DMD和BMD变异的确认分子遗传分析的解释.

主要成果:

  • 护理人员研究表明对DMD NBS的支持.
  • 俄俄州和明尼苏达州已经实施了DMD NBS,其他州也在考虑.
  • 选准确性取决于所使用的测试算法.

结论:

  • 新生儿对DMD的查为早期诊断和干预提供了潜在的机会.
  • 虽然存在诸如葡萄皮质激素,基因疗法和外基因跳转药物等治疗方法,但它们的最佳使用和明确的临床益处仍在研究中.
  • 通过NBS进行早期识别对于最大限度地发挥DMD新兴疗法的潜在益处至关重要.