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[The effect of Cu2+, Zn2+ cations and biogenic amines on the nuclear poly(ADP-ribose) polymerase activity in the rat brain].

作者信息

Zaalishvili T M, Dzhaparidze N Sh, Sabelashvili D Sh, Michilashvili R D

出版信息

Biokhimiia. 1990 Apr;55(4):659-64.

PMID:2116186
Abstract

Study of the effects of Cu2+, Zn2+ cations and polyamines, spermine and spermidine, on the nuclear poly(ADP-ribose)polymerase activity of rat brain was carried out. It was shown that low concentrations of Cu2+ stimulate the activity of purified poly(ADP-ribose)polymerase. The poly(ADP-ribose)polymerase activity was increased 1.4-fold at 5 microM Cu2+. A further increase of Cu2+ concentration inhibited the enzymatic activity; at 50 microM Cu2+ the polymerase activity appeared to be fully inhibited. It was shown that Zn2+ inhibited only the poly(ADP-ribose)polymerase activity. Zn2+ at a concentration of 125 microM fully inhibited the enzymatic activity. Spermine and spermidine stimulated the poly(ADP-ribose)polymerase activity of brain nuclei of newborn and old rats.

摘要

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