Influence of estrogen cytostatics on activity of plasma membrane enzymes 5'-nucleotidase and N+-K+-ATPase.

Abstract:

:We studied the effect of four conjugated synthetic derivatives of estrone and ethynylestradiol and bis-beta-chloroethylamine-containing substance on activity of plasma membrane enzymes 5'-nucleotidase and N+-K+-ATPase. As differentiated from precursors, estrogen cytostatics decreased activity of plasma membrane enzymes. Reference preparations chlorophenacyl and estradiol had little effect on activity of 5'-nucleotidase and N+-K+-ATPase. These data suggest that damage to plasma membrane enzymes is related to the effect of estrogen cytostatic molecules. Test compounds produced an antiproliferative effect on estrogen-independent tumor cells, which strongly correlated with a decrease in activity of plasma membrane enzymes 5'-nucleotidase and N+-K+-ATPase. The derivative of ethynylestradiol with the cytostatic residue in the 3-position of the steroid nucleus (Po-714-11alpha) most significantly modulated enzyme activity.

journal_name

Bull Exp Biol Med

authors

Mayatskaya EE,Semeikin AV,Rzheznikov VM,Shimanovskii NL

doi

10.1023/b:bebm.0000020202.89379.f3

subject

Has Abstract

pub_date

2003-12-01 00:00:00

pages

557-9

issue

6

eissn

0007-4888

issn

1573-8221

journal_volume

136

pub_type

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