Cauda equina repair in the rat: Part 3. Axonal regeneration across Schwann cell-Seeded collagen foam.

Cauda equina repair in the rat: Part 3. Axonal regeneration across Schwann cell-Seeded collagen foam.
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DOI:
10.1002/mus.25751
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发表时间:
2018-01
期刊:
影响因子:
3.4
通讯作者:
Calancie B
Calancie B
中科院分区:
医学3区
文献类型:
--
作者:
Mackenzie SJ;Yi JL;Singla A;Russell TM;Osterhout DJ;Calancie B

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马尾神经损伤患者的治疗是有限的。在这项研究中,我们首先使用逆行标记,以确定马尾神经元的相对贡献的内在和外在的大鼠尾肌。接下来,我们横切马尾神经腹根,然后用层粘连蛋白(CL)包被的I型胶原支架或也用雪旺细胞(CLSC)接种的胶原-层粘连蛋白支架桥接近端和远端残端。通过连续逆行标记的方式评估再生。在解释了轴突对内在尾肌和外在尾肌的贡献后,我们注意到CLSC组(58.0 ± 39.6%)的双标记程度高于CL组(27.8 ± 16.0%; p = 0.02),但对照组(33.5 ± 18.2%; p = 0.10)则不然。我们的研究结果表明,使用雪旺细胞种植胶原-层粘连蛋白支架在马尾神经损伤修复的可行性。
Treatments for patients with cauda equina injury are limited. In this study, we first used retrograde labeling to determine the relative contributions of cauda equina motor neurons to intrinsic and extrinsic rat tail muscles. Next, we transected cauda equina ventral roots and proceeded to bridge the proximal and distal stumps with either a type I collagen scaffold coated in laminin (CL) or a collagen-laminin scaffold that was also seeded with Schwann cells (CLSC). Regeneration was assessed by way of serial retrograde labeling. After accounting for the axonal contributions to intrinsic vs extrinsic tail muscles, we noted a higher degree of double labeling in the CLSC group (58.0 ± 39.6%) as compared to the CL group (27.8 ± 16.0%; p = 0.02), but not the control group (33.5 ± 18.2%; p = 0.10). Our findings demonstrate the feasibility of using Schwann cell seeded collagen-laminin scaffolds in cauda equina injury repair.
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