Blunt Force Trauma-Induced Total Bilateral Visual Impairment of 13 Years Duration Treated with Autologous Telomerase-Positive Stem Cells

H. Young, M. Speight
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引用次数: 4

Abstract

Loss of visual acuity may result from genetics, cancer, metabolic disorders, trauma, or aging. Adult telomerase- positive totipotent stem cells have been identified in multiple species of animals, including humans. Characterization studies to identify differentiated cells utilized three clones of adult-derived totipotent stem cells (TSCs) and treated them with induction factors consisting of chemical mediators, human recombinant proteins and cell-specific exosomes. Results demonstrated that the TSC clones would form cells expressing phenotypic markers of the neural ectodermal lineage, e.g., ectodermal stem cells, ectodermal progenitor stem cells, neurons, ganglion cells, glial cells, and neural crest derivatives. Autologous TSCs were shown to partially restore function in clinical trial participants with Alzheimer’s disease, Parkinson’s disease, and Age-related Dry Macular Degeneration. It was hypothesized that following intranasal infusion, TSCs would migrate to areas associated with the visual pathway to repair and/or regenerate damaged and/or missing cells, thus restoring function. In this small cohort study (n=1), the presenting symptom for a 17-year-old female was total bilateral visual impairment (complete blindness) of 13-years duration, due to severe head trauma from an automobile accident at four years of age. Following her first TSC treatment, she could see indistinct black shapes on a background of a dark shade of gray. Following her second TSC treatment she could see background as a lighter shade of gray and a black square with slightly more distinct borders. No adverse effects were noted after either autologous TSC treatment. These results suggest that two treatments with TSCs were both safe and somewhat efficacious in helping to partially restore her ‘night’ vision.
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自体端粒酶阳性干细胞治疗13年钝性创伤性双侧全视力障碍
视力的丧失可能是由遗传、癌症、代谢紊乱、创伤或衰老造成的。成人端粒酶阳性的全能干细胞已经在包括人类在内的多种动物中被鉴定出来。鉴定分化细胞的特性研究使用了3个成人来源的全能干细胞(TSCs)克隆,并用由化学介质、人重组蛋白和细胞特异性外泌体组成的诱导因子对其进行处理。结果表明,TSC克隆可形成表达神经外胚层谱系表型标记的细胞,如外胚层干细胞、外胚层祖干细胞、神经元、神经节细胞、胶质细胞和神经嵴衍生物。在阿尔茨海默病、帕金森病和年龄相关性干性黄斑变性患者的临床试验中,自体TSCs被证明可以部分恢复功能。据推测,鼻内输注后,TSCs会迁移到与视觉通路相关的区域,修复和/或再生受损和/或缺失的细胞,从而恢复功能。在这项小型队列研究中(n=1),一名17岁女性的主要症状是持续13年的完全双侧视力障碍(完全失明),原因是4岁时车祸造成的严重头部创伤。在她第一次接受TSC治疗后,她可以在深灰色的背景上看到模糊的黑色形状。在她的第二次TSC处理之后,她可以看到背景是浅灰色和一个黑色的正方形,边缘稍微清晰一些。两种自体TSC治疗均无不良反应。这些结果表明,两种使用tsc的治疗方法在帮助部分恢复她的“夜间”视力方面既安全又有效。
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