[Immunological indices in gastric cancer]

Immunological indices were assayed in 167 patients with gastric cancer. Tumor growth involved reduction in levels of neutrophil peroxide (p<0.05), CD3+ and CD19+-cells (p<0.05) as well as intensification of apoptosis of lymphocytes (p<0.05). As monocytic and granulocytic phagocytosis (p<0.001) and HLA-DR-expression in monocytes (p<0.001) diminished, and mitogen-induced proliferative activity of mononuclear cells suppressed (p<0.05), total and relative levels of CD8+-cells (p<0.05) and spontaneous proliferative activity of mononuclear cells (p<0.05) in peripheral blood increased. Such changes should not be reganded as expression of immunosuppression alone. Mechanisms of immunological failure inherent in tumor growth need to be investigated further.