Immune surveillance and tumors of the nervous system

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Abstract

The theory of immune surveillance postulates that one function of the immune system is to eliminate small numbers of malignant cells that arise spontaneously within the organism. Although there has been a great deal of both clinical and experimental evidence in favor of this theory as it applies to general oncology, the question of whether or not such a surveillance system would be effective for tumors arising within the nervous system has never been studied. The young of pregnant rats which had been exposed to the neurocarcinogen ethylnitrosourea (ENU) were divided into control, immunosuppressed, and immunoenhanced groups. These lifetime alterations of the immune system had no effect on the course of nervous system tumor formation. It is believed that the most likely explanation for the results is that the 'immunological privilege' of the brain prevents the usual interaction of the neoplasm and the immune system from occurring.

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Morantz, R. A., Shain, W., & Cravioto, H. (1978). Immune surveillance and tumors of the nervous system. Journal of Neurosurgery, 49(1), 84–92. https://doi.org/10.3171/jns.1978.49.1.0084

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