Formation of superoxide anion during ferrous ion-induced decomposition of linoleic acid hydroperoxide under aerobic conditions.

Formation of superoxide anion during ferrous ion-induced decomposition of linoleic acid hydroperoxide under aerobic conditions. Research Abstract Details 

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Formation of superoxide anion during ferrous ion-induced decomposition of linoleic acid hydroperoxide under aerobic conditions. Abstract Text:

Yasuhiro Kambayashi,Shozo Tero-Kubota,Yorihiro Yamamoto,Masashi Kato,Minoru Nakano,Kunio Yagi,Keiki Ogino,

We studied the mechanism of formation of oxygen radicals during ferrous ion-induced decomposition of linoleic acid hydroperoxide using the spin trapping and chemiluminescence methods. The formation of the superoxide anion (O2*-) was verified in the present study. The hydroxyl radical is also generated through Fenton type decomposition of hydrogen peroxide produced on disproportionation of O2*-. A carbon-centered radical was detected using 5-(diethoxyphosphoryl)-5-methyl-1-pyrroline N-oxide (DEPMPO) as a spin trap. Alkoxyl radical formation is essential for the conversion of linoleic acid hydroperoxide into the peroxyl radical by ferrous ion. It is likely that the alkoxyl radical [R1CH(O*)R2] is converted into the hydroxylcarbon radical [R1C*(OH)R2] in water, and that this carbon radical reacts with oxygen to give the alpha-hydroxyperoxyl radical [R1R2C(OH)OO*], which decomposes into the carbocation [R1C+(OH)R2] and O2*-.

Formation of superoxide anion during ferrous ion-induced decomposition of linoleic acid hydroperoxide under aerobic conditions. Publishing Authors By Initials

Y Kambayashi,S Tero-Kubota,Y Yamamoto,M Kato,M Nakano,K Yagi,K Ogino,

For similar inorganic chemicals: electrolytes: ions: anions: oxides: peroxides: superoxides research abstracts see: inorganic chemicals: electrolytes: ions: anions: oxides: peroxides: superoxides research

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Formation of superoxide anion during ferrous ion-induced decomposition of linoleic acid hydroperoxide under aerobic conditions. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of biochemistry

VOLUME: 134

Page Numbers: 903-9

Journal Abbreviation: J. Biochem.

ISSN: 0021-924X

DAY: 19

MONTH: Dec

YEAR: 2003

Formation of superoxide anion during ferrous ion-induced decomposition of linoleic acid hydroperoxide under aerobic conditions. Information

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LANGUAGE: eng

NlmUniqueID: 376600

Formation of superoxide anion during ferrous ion-induced decomposition of linoleic acid hydroperoxide under aerobic conditions. Keywords Mesh Terms:

KEYWORDS: Superoxides

MESH TERMS: metabolism

Chemical & Substance for Abstract: Formation of superoxide anion during ferrous ion-induced decomposition of linoleic acid hydroperoxide under aerobic conditions. Information

Substance Name: Argon

Registry Number: 7440-37-1

Grant and Affiliation Information for Formation of superoxide anion during ferrous ion-induced decomposition of linoleic acid hydroperoxide under aerobic conditions.

AFFILIATION: Department of Photon and Free Radical Research, Japan Immunoresearch Laboratories, 351-1 Nishiyokote-cho, Takasaki 370-0021. kambayashi@pub.m.kanazawa-u.ac.jp

Country: Japan

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MEDLINETA: J Biochem

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