Iłzecka J
Katedra i Klinika Neurologii Akademii Medycznej w Lublinie.
Ann Univ Mariae Curie Sklodowska Med. 1996;51:97-101.
Free radicals are atoms, groups of atoms or particles having on their last orbital at least one unpaired electron. This feature decides about their great chemical reactivity and lability (12, 16). To potentially toxic oxygen radicals belong: peroxidal anion radical, hydroxidal radical, hydrogen peroxide, hydroxylic radical, peroxidal lipid radical, singletal oxygen (12). The presence of free radicals in biological systems may play a role in etiopathogenesis of different illnesses. Overactivity of these compounds causes damage of tissues and bodily organs (3, 16, 18).
自由基是原子、原子团或粒子，其最外层轨道上至少有一个未成对电子。这一特性决定了它们具有很强的化学反应性和不稳定性（12, 16）。潜在有毒的氧自由基包括：过氧阴离子自由基、羟基自由基、过氧化氢、羟自由基、脂质过氧自由基、单线态氧（12）。生物系统中自由基的存在可能在不同疾病的病因发病机制中起作用。这些化合物的过度活跃会导致组织和身体器官的损伤（3, 16, 18）。
