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维生素C:从自给自足到饮食依赖,其生物功能和医学影响的框架

Andrei Cristian Grădinaru¹, Setalia Popa²

¹Faculty of Veterinary Medicine, "Ion Ionescu de la Brad" University of Life Sciences, 3 M. Sadoveanu Alley, 700490 Iasi, Romania.

Life (Basel, Switzerland)

|February 26, 2025

概括

维生素C对健康至关重要,作为抗氧化剂和支持原蛋白合成. 人类和其他物种由于突变的GULO基因不能产生维生素C,因此需要通过饮食摄入以预防疾病.

科学领域:

生物化学生物化学
进化生物学进化生物学
人体生理学人体生理学

背景情况:

维生素C (酸) 是一种必需的有机化合物,由植物和大多数脊椎动物合成.
它具有抗氧化,抗炎,抗凝固和免疫调节的特性,对许多生理过程至关重要.
关键作用包括原蛋白合成,疹预防和生物合成途径中的辅因子活性.

研究的目的:

审查维生素C在生物系统中的多方面的作用.
探索无法合成维生素C的物种中GULO基因伪基因化的进化影响.
强调维护维生素C平衡对于预防与年龄有关的疾病的重要性.

主要方法:

对维生素C的生化功能和进化遗传学的文献综述.
分析了GULO基因在维生素C生物合成及其失活中的作用.
讨论饮食中维生素C依赖对健康和疾病的影响.

主要成果:

维生素C对于原合成,卡尼丁和甲醇胺生物合成以及表观遗传调节是不可或缺的.
人类和灵长类动物由于GULO基因突变而失去合成维生素C的能力,需要外源来源.
关于GULO基因失活的进化原因仍在争论中,可能与氧化还原稳定或中性选择有关.

结论:

无法合成维生素C对衰老和与年龄相关的疾病,如心血管疾病和认知衰退有重大影响.
建立维生素C稳态对于依赖饮食摄入的物种的人类和动物健康至关重要.
需要进一步研究维生素C缺乏对进化和健康的影响.

关键词:

这就是GULO基因.抗氧化剂是一种抗氧化剂.酶辅助因子是一种酶辅助因子.伪基化是一种伪基化.

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