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Brain Behav Immun. 1988 Jun;2(2):114-22.

Inhibition of pulmonary metastases and enhancement of natural killer cell activity by methionine-enkephalin.

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1
Department of Biology University of Houston, Texas 77004.

Abstract

Studies were performed to investigate the effects of the endogenous opioid peptide methionine enkephalin on experimental metastasis of the murine B-16 melanoma and on murine splenic natural killer cell activity. Methionine enkephalin was shown to significantly inhibit tumor metastasis and significantly enhance splenic natural killer cell activity. These results indicate that the endogenous opioids can modulate the immune response and tumor defense and that methionine-enkephalin may prove to be a beneficial adjunct to the therapy of neoplastic disease.

PMID:
3233355
[Indexed for MEDLINE]

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