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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Number of helper T cells and phytohemagglutinin stimulation correlate in cancer patients.

Mononuclear cells from 12 normal controls (co), 10 advanced untreated (c1), and 6 advanced treated cancer patients (c2) have been isolated. The numbers of mononuclear cells bearing Leu1, Leu2, Leu3, Leu2/HLA-DR and LeuM3 were measured with a fluorescence-activated cell sorter. Only the quantity of helper T cells (Leu3) was decreased in cancer patients (co: 0.89, cl: 0.32, c2: 0.44 x 10(9)/l). Expression of all other markers, including activated suppressor T cells (Leu2/HLA-DR), did not differ significantly from the control. The proliferation of the lymphocytes was determined in a phytohemagglutinin-culture assay. The cancer groups showed a significantly decreased response (co: 95.8 x 10(9), cl: 28.7 x 10(9), c2: 25.7 x 10(9) cpm). These values correlated with the number of helper T cells but not with the suppressor T cells. Monocytes of cancer patients absorbed significantly more immunoglobulins than the monocytes of controls. The addition of indomethacin or isoprinosine to phytohemagglutinin-culture assay increased the proliferation of lymphocytes from both the cancer patients and normal controls.[1]


  1. Number of helper T cells and phytohemagglutinin stimulation correlate in cancer patients. Richner, J., Ambinder, E.P., Hoffmann, K., Feuer, E.J., Bekesi, G. Cancer Immunol. Immunother. (1991) [Pubmed]
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