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Review
. 1992 Dec;5(4):334-40.

[Free radicals and their biological significance: present and future]

[Article in Japanese]
M Nakano  1
Affiliations
  • PMID: 1339006
Review

[Free radicals and their biological significance: present and future]

[Article in Japanese]
M Nakano. Hum Cell. 1992 Dec.

Abstract

Free radicals are usually active species which have unpair electron (S) in molecules or Atomic groups. Of the free radicals, O2- and .OH could easily be produced in mammalian cells, by oxidation and reduction cycle catalyzed by fravoproteins and by iron + H2O2 reaction, respectively. Other free radicals would also be produced in mammalian cell, such as amino acid radicals, semiquinone radicals and flavine radicals etc. In general, free radicals cause cell injury though membrane lipid peroxidation and DNA strand cleavage and some other mechanisms.

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