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首页> 外文期刊>Journal of tissue engineering and regenerative medicine >Collagen scaffold combined with human umbilical cord-derived mesenchymal stem cells promote functional recovery after scar resection in rats with chronic spinal cord injury
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Collagen scaffold combined with human umbilical cord-derived mesenchymal stem cells promote functional recovery after scar resection in rats with chronic spinal cord injury

机译:胶原屑支架结合人脐带衍生的间充质干细胞促进慢性脊髓损伤大鼠瘢痕切除后的功能恢复

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摘要

Effective therapeutic strategies for treating chronic spinal cord injury (SCI) are currently unavailable. Scar tissue in the lesion area is a main inhibitory factor for axonal regeneration and repair of chronic SCI. In this study, scar tissue was surgically resected from adult rats with 12week chronic SCI and then collagen scaffold (NeuroRegen Scaffold; NRS) and human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) were implanted into the resected cavity to repair chronic SCI. The results demonstrated that the locomotor function of rats was not affected by surgical scar resection, indicating its safety in treating chronic SCI. Implanting NRS and hUC-MSCs promoted locomotion in rats and improved cortical motor- and somatosensory-evoked potentials. Furthermore, implanting NRS and hUC-MSCs promoted neurofilament- and -tubulin-III-positive neural regeneration and remyelination, elicited -tubulin-III-positive neuron production in the lesion area and blocked astrocyte growth outside the lesion area. In conclusion, implanting NRS in combination with hUC-MSCs provided a beneficial microenvironment for neural regeneration, showing significant therapeutic effects for chronic SCI.
机译:治疗慢性脊髓损伤(SCI)的有效治疗策略目前无法使用。病变区的瘢痕组织是轴突再生和慢性SCI修复的主要抑制因子。在这项研究中,将瘢痕组织从成年大鼠从成年大鼠中切除,然后将胶原蛋白支架(NEUROREGEN支架; NRS)和人脐带衍生的间充质干细胞(HUC-MSCs)注入切除的腔中以修复慢性SCI 。结果表明,大鼠的运动功能不受外科瘢痕切除的影响,表明其在治疗慢性SCI时的安全性。植入NRS和HUC-MSCs促进大鼠的运动,改善皮质电动机和躯体感应诱发的电位。此外,植入NRS和HUC-MSCs促进了神经膜和 - 丁蛋白-III阳性神经再生和雷米髓鞘,引发 - 硫磺酸脲-III阳性神经元产生,并阻断病变区域外的星形胶质细胞生长。总之,与HUC-MSC组合植入NRS提供了神经再生的有益的微环境,对慢性SCI显示出显着的治疗效果。

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