Puzanowska-Tarasiewicz Helena, Kuźmicka Ludmiła, Tarasiewicz Mirosław
Zakład Nauk Chemicznych Wyzszej Szkoły Kosmetologii i Ochrony Zdrowia w Białymstoku.
Wiad Lek. 2009;62(3):184-9.
The review is devoted for reactive oxygen species (ROS). Numerous processes of cellular oxidation proceed through the stage of free radicals. These radicals containing odd electrons are formed in the course of many biochemical reactions. As a result of aging, as well as action of various environmental factors, eg. ionizing radiation or different chemical compounds synthesis of free radicals increases, whereas the detoxication ability decreases. Free radicals: O(2-), OH, ROO, RO and O3, H2O2, singlet oxygen may be removed by means of defence systems of living organism and antioxidants.
这篇综述聚焦于活性氧(ROS)。细胞氧化的众多过程都经过自由基阶段。这些含有单电子的自由基在许多生化反应过程中形成。由于衰老以及各种环境因素的作用,例如电离辐射或不同化合物,自由基的合成增加,而解毒能力下降。自由基:超氧阴离子(O(2-))、羟基自由基(OH)、过氧自由基(ROO)、烷氧自由基(RO)以及臭氧(O3)、过氧化氢(H2O2)、单线态氧,可以通过生物体的防御系统和抗氧化剂来清除。