耐缺氧物种:大自然的智慧转化为中风治疗靶点。
Hypoxia Tolerant Species: The Wisdom of Nature Translated into Targets for Stroke Therapy.
机构信息
Institute of Biomedicine of Seville (IBiS), Hospital Universitario Virgen del Rocío, CSIC, Universidad de Sevilla, 41013 Seville, Spain.
Department of Neurology, Hospital Universitario Virgen Macarena, 41009 Seville, Spain.
出版信息
Int J Mol Sci. 2021 Oct 15;22(20):11131. doi: 10.3390/ijms222011131.
Human neurons rapidly die after ischemia and current therapies for stroke management are limited to restoration of blood flow to prevent further brain damage. Thrombolytics and mechanical thrombectomy are the available reperfusion treatments, but most of the patients remain untreated. Neuroprotective therapies focused on treating the pathogenic cascade of the disease have widely failed. However, many animal species demonstrate that neurons can survive the lack of oxygen for extended periods of time. Here, we reviewed the physiological and molecular pathways inherent to tolerant species that have been described to contribute to hypoxia tolerance. Among them, Foxo3 and Eif5A were reported to mediate anoxic survival in and Caenorhabditis elegans, respectively, and those results were confirmed in experimental models of stroke. In humans however, the multiple mechanisms involved in brain cell death after a stroke causes translation difficulties to arise making necessary a timely and coordinated control of the pathological changes. We propose here that, if we were able to plagiarize such natural hypoxia tolerance through drugs combined in a pharmacological cocktail it would open new therapeutic opportunities for stroke and likely, for other hypoxic conditions.
人类神经元在缺血后迅速死亡,目前治疗中风的方法仅限于恢复血液流动以防止进一步的脑损伤。溶栓和机械血栓切除术是可用的再灌注治疗方法,但大多数患者仍未得到治疗。针对治疗疾病发病机制的神经保护疗法广泛失败。然而,许多动物物种表明,神经元可以在缺氧的情况下存活很长时间。在这里,我们回顾了耐受物种固有的生理和分子途径,这些途径被描述为有助于缺氧耐受。其中,Foxo3 和 Eif5A 分别被报道在 和秀丽隐杆线虫中介导缺氧存活,并且在中风的实验模型中得到了证实。然而,在人类中,中风后脑细胞死亡涉及多种机制,导致翻译出现困难,因此需要及时协调控制病理变化。我们在这里提出,如果我们能够通过药物组合成药物鸡尾酒来抄袭这种自然的缺氧耐受,那么这将为中风和可能的其他缺氧情况开辟新的治疗机会。
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