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Effect of cocaine on macromolecular syntheses and cell proliferation in cultured glial cells.

Abstract：

:In the present study the effect of cocaine on thymidine, uridine and leucine incorporation was assessed in primary cortical glial and C6 glioma cells. Cocaine exposure for 24 h inhibited thymidine and uridine incorporation in cortical glial and C6 glioma cells. However, the effect of cocaine on uridine incorporation was less prominent compared to thymidine incorporation. High concentrations of cocaine inhibited leucine incorporation in C6 glioma cells but not in cortical glia. Cocaine exposure for four days decreased cell proliferation of cortical glial and C6 glioma cells. Cocaine-induced attenuation of macromolecular syntheses was not due to cell death since cocaine-treated cells were not stained with Trypan Blue and did not release lactate dehydrogenase into culture supernatants. Furthermore, cocaine had no effect on glutamate uptake either in cortical glia or in C6 glioma cells. These results indicate that cocaine inhibits macromolecular syntheses in glial cells. The inhibition of macromolecular syntheses in glial cells may be the mechanism involved in cocaine-induced fetal brain growth retardation.

journal_name

Neuroscience

journal_title

Neuroscience

authors

Garg UC,Turndorf H,Bansinath M

doi

10.1016/0306-4522(93)90079-u

subject

Has Abstract

pub_date

1993-11-01 00:00:00

pages

467-72

issue

2

eissn

0306-4522

issn

1873-7544

pii

0306-4522(93)90079-U

journal_volume

57

pub_type

杂志文章

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