脊髓损伤常伴随一系列问题的发生,如神经细胞死亡、炎症和瘢痕的形成等。目前临床上多种药物和手术式策略用于此类损伤的治疗,但效果尚不令人满意。
甲基强的松龙作为一种糖皮质激素,是目前临床上唯一被证实对急性创伤性脊髓损伤有明确神经保护作用的药物。但其在临床应用也存在着不良反应较大的问题。
维生素C是天然水溶性抗氧化剂,已补充广泛用于感冒、癌症和心肌缺血的治疗,其在神经系统疾病的治疗中也体现出良好的神经保护作用。
骨髓间充质干细胞可通过分泌多种生物活性营养因子,起到抗炎、免疫调节、抗凋亡和抗纤维化作用,因而是适宜应用于细胞疗法中的干细胞,其在修复脊髓损伤方面显示出良好的应用前景。
埃及本哈大学医学院的Mohammed M. Elmaghrabi等为评估甲基强的松龙、维生素C、骨髓间充质干细胞治疗创伤性脊髓损伤的效果,在实验中应用自由落体重物打击法建立脊髓损伤模型后,分别给予尾静脉注射甲基强的松龙和/或腹腔注射维生素C、脊髓损伤部位局部注射3 × 106 个骨髓间充质干细胞或合并维生素C干预。Basso量表评估、损伤脊髓组织进行HE染色和免疫组化染色,以及实时PCR定量检测显示,骨髓间充质干细胞干预在促进脊髓损伤大鼠神经功能恢复、减轻神经细胞损害、降低转化生长因子β, 肿瘤坏死因子α和基质金属蛋白酶2基因表达方面较甲基强的松龙和/或维生素C干预作用明显;更为重要的是,骨髓间充质干细胞联合维生素C干预后,前述表现更为明显。说明维生素C可增强骨髓间充质干细胞对脊髓损伤的神经保护作用,从而也提示未来在应用骨髓间充质干细胞移植治疗创伤性脊髓损伤时,可考虑联合维生素C进行干预。
研究成果发表于2017年第12期《中国神经再生研究(英文版)》杂志中。
Article: "Does vitamin C have the ability to augment the therapeutic effect of bone marrow-derived mesenchymal stem cells on spinal cord injury?" by Nesrine Salem1, Mohamed Y. Salem1, Mohammed M. Elmaghrabi2, Moataz A. Elawady2, Mona A. Elawady3, Dina Sabry4, Ashraf Shamaa5, Abdel-Haleem H. Elkasapy6, Noha Ibrhim7, Azza Elamir8 (1 Department of Histology and Cell Biology, Faculty of Medicine, Banha University, Banha, Egypt; 2 Department of Neurosurgery, Faculty of Medicine, Banha University, Banha, Egypt; 3 Department of Community Medicine, Faculty of Medicine, Banha University, Banha, Egypt; 4 Department of Medical Biochemistry, Faculty of Medicine, Cairo University, Giza, Egypt; 5 Department of Surgery and Radiology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt; 6 Department of Surgery, Faculty of Veterinary Medicine, Banha University, Banha, Egypt; 7 Department of Medical Physiology, Faculty of Medicine, Banha University, Banha, Egypt; 8 Department of Medical Biochemistry, Faculty of Medicine, El Fayoum University, Egyptian, Egypt)
Salem N, Salem MY, Elmaghrabi MM, Elawady MA, Elawady MA, Sabry D, Shamaa A, Elkasapy AHH, Ibrhim N, Elamir A (2017) Does vitamin C have the ability to augment the therapeutic effect of bone marrow-derived mesenchymal stem cells on spinal cord injury? Neural Regen Res 12(12):2050-2058.