Interactions of malondialdehyde and 4-hydroxynonenal with rat liver plasma membranes and their effect on binding of prostaglandin E2 by specific receptors.

Abstract:

:We investigated effect of aldehydic products of lipid peroxidation, malondialdehyde (MDA) and 4-hydroxynonenal (HNE) on prostaglandin (PG) E2 receptors of liver plasma membranes. The modification of the membranes by MDA diminished PGE2 binding, decreasing receptor affinity for PGE2 and receptor density whereas HNE increased PGE2 binding, enhanced receptor density but did not changed receptor affinity. ESR study showed the decrease of the whole membrane fluidity after modification by MDA whereas HNE lowered membrane fluidity only in the internal zone of lipid bilayer and increased it in the surface area. The possible effects of membrane changes caused by MDA and HNE on PGE2 receptor parameters are discussed.

journal_name

Free Radic Res

journal_title

Free radical research

authors

Buko VU,Artsukevich A,Zavodnik I,Maltsev A,Sushko L,Zimmermann T,Dianzani MU

doi

10.3109/10715769609149064

subject

Has Abstract

pub_date

1996-11-01 00:00:00

pages

415-20

issue

5

eissn

1071-5762

issn

1029-2470

journal_volume

25

pub_type

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