SOCIAL CONFRONTATION STRESS IN AGGRESSIVE FISH IS ASSOCIATED WITH AN ENDOGENOUS OPIOID-MEDIATED SUPPRESSION OF PROLIFERATIVE RESPONSE TO MITOGENS AND NONSPECIFIC CYTOTOXICITY
SOCIAL CONFRONTATION STRESS IN AGGRESSIVE FISH IS ASSOCIATED WITH AN ENDOGENOUS OPIOID-MEDIATED SUPPRESSION OF PROLIFERATIVE RESPONSE TO MITOGENS AND NONSPECIFIC CYTOTOXICITY
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DOI:
10.1016/0889-1591(89)90038-x
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发表时间:
1989-01-01
影响因子:
15.1
通讯作者:
WEINER H
中科院分区:
文献类型:
--
作者:
FAISAL M;CHIAPPELLI F;WEINER H
We have previously shown that social confrontation between aggressive fish (e.g., Tilapia) produces a suppression of several immunological parameters-nonspecific cytotoxicity and mitogen.sbd.stimulated proliferation in pronephric leukocytes.sbd.in the subordinate fish. By using the opioid antagonist, naltrexone, we now demonstrate indirectly that this immunosuppression is in part mediated by the endogenous opioid system. Evidence is presented that naltrexone-mediated reversal of immunosuppression may be limited to the populations of the cytotoxic and T-cell lineages. The proliferation response to lipopolysaccharide is unaffected by naltrexone. Our data also demonstrate that serum from subordinate (immunosuppressed) fish is immunosuppressive in a normal fish.sbd.an effect that can be reversed by naltrexone. These results support a link between the neuroendocrine and immune systems in fish, the lowest vertebrate.