EFFECTS OF OPIOID-PEPTIDES ON THE CELLULAR-IMMUNITY IN SPLEEN-CELLS FROM INTACT NUDE-MICE OR NUDE-MICE BEARING HUMAN OVARIAN-CARCINOMA

被引:8
|
作者
KIKUCHI, Y
KITA, T
NAGATA, I
机构
[1] Department of Obstetrics and Gynecology, National Defense Medical College, Tokorozawa, 359, Saitama
关键词
D O I
10.1007/BF01786888
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
The present study was designed to explore the effects of opioid peptides on the lytic activity of spleen cells from intact nude mice or nude mice bearing human ovarian cancer cells (KF). When the spleen cells from intact nude mice were incubated with various concentrations of opioid peptides, the ability of the spleen cells to lyse the KF cells was significantly stimulated between 0.05 nM and 50 nM concentrations of all opioid peptides used in this study. The degree of stimulation was most marked at 5 nM opioid peptides and the most marked stimulatory effect was obtained by α-endorphin. On the other hand, the lytic activity of spleen cells from nude mice challenged with the KF cells was about two-fold higher than that of intact nude mice, suggesting that spleen cells from nude mice challenged with KF cells have KF-cell-specific cytotoxicity. Even if the spleen cells were incubated with any concentration of α-endorphin or [Met]enkephalin indicated, the lytic activity remained unchanged. In contrast, only β-endorphin resulted in a significant increase of the lytic activity between 0.5 nM and 50 nM. These results suggest that opioid peptides play a crucial role in immune surveillance mechanisms. © 1990 Springer-Verlag.
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收藏
页码:374 / 376
页数:3
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