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Apoptosis

Immunosuppression by morphine-induced lymphocyte apoptosis did not occur

Published in Drug Week, November 25th, 2005

The hypothesis that morphine directly modulates peripheral blood lymphocyte (PBL) apoptosis resulting in immunosuppression was not supported.

"Morphine has been an optimal choice for cancer pain management. However, several recent studies suggested that morphine induces apoptosis in human peripheral blood lymphocytes PBLs, raising a serious concern about the use of opioid-based analgesic strategies," reported scientists in Japan.

"In this study, therefore, we aimed to evaluate whether morphine induced apoptosis in cultured human PBLs. Apoptotic events were assessed by flow-cytometrical detection of surface phosphatidylserine and nuclear...

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