Optimal time-point for neural stem cell transplantation to delay denervated skeletal muscle atrophy

Authors

  • Sen Lin MD, PhD,

    1. Department of Orthopaedics, Shanghai Sixth People's Hospital and School of Medicine, Shanghai Jiao Tong University, Shanghai, China
    2. Department of Hand Surgery, Huashan Hospital, 12 Middle Urumqi Road, Fudan University, Shanghai 200040, China
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    • The first two authors (S.L. and L.X.) contributed equally to this study.

  • Lei Xu MD, PhD,

    1. Department of Hand Surgery, Huashan Hospital, 12 Middle Urumqi Road, Fudan University, Shanghai 200040, China
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    • The first two authors (S.L. and L.X.) contributed equally to this study.

  • Shaonan Hu MD, PhD,

    1. Department of Hand Surgery, Huashan Hospital, 12 Middle Urumqi Road, Fudan University, Shanghai 200040, China
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  • Changqing Zhang MD, PhD,

    Corresponding author
    1. Department of Orthopaedics, Shanghai Sixth People's Hospital and School of Medicine, Shanghai Jiao Tong University, Shanghai, China
    • Department of Hand Surgery, Huashan Hospital, 12 Middle Urumqi Road, Fudan University, Shanghai 200040, China
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  • Yang Wang PhD,

    1. Department of Anatomy, Histology, and Embryology, Fudan University, Shanghai Medical Center, Shanghai, China
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  • Jianguang Xu MD, PhD

    Corresponding author
    1. Department of Hand Surgery, Huashan Hospital, 12 Middle Urumqi Road, Fudan University, Shanghai 200040, China
    • Department of Hand Surgery, Huashan Hospital, 12 Middle Urumqi Road, Fudan University, Shanghai 200040, China
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Abstract

Introduction:

Transplantation of neural stem cells (NSCs) is a promising treatment to delay denervated skeletal muscle atrophy; however, the optimal time-point between peripheral nerve injury and NSC transplantation needs to be determined.

Methods:

Improvement in rat gastrocnemius muscle function was evaluated after NSCs were transplanted into sectioned distal tibial nerves. We also assessed survival and differentiation. ANOVA was used to compare the mean value of the number of neuron-like cells, cross-sectional area amelioration, the amount of activated fibers, and latency and amplitude of the gastrocnemius compound muscle action potential.

Results:

The group in which the NSCs were transplanted 1 week after tibial nerve transection had the largest number of neuron-like cells, maximum cross-sectional area amelioration, and maximum amount of activated gastrocnemius fibers compared with all other groups (P < 0.01).

Conclusions:

The optimal time-point for NSC transplantation for delaying denervated skeletal muscle atrophy is 1 week after severing the nerve. Muscle Nerve, 2013

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