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2 cases of T-cell prolymphocytic leukaemia (T-PLL) were investigated for their reactivity with a series of monoclonal antibodies (MoAbs) as well as for the cytochemical expression and functional activity of the pathological cells. Both patients showed morphological (large cells with abundant cytoplasm and eccentric and irregularly shaped nucleus with large and prominent nucleoli) and clinical (high leucocyte count and splenomegaly) features typical of T-PLL. The cells from 1 patient expressed a helper/inducer phenotype (T4+, T8-) and were reactive with the anti-Tac (interleukin-2 receptor) MoAb, while the other case co-expressed both the T4 and the T8 antigens. The response to phytohaemagglutinin and the natural killer activity (assessed by 51chromium release) were significantly reduced in both cases, while the helper capacity, tested in a pokeweed mitogen-driven system, was maintained only in the 1st case. This latter case which expressed a more mature phenotype (T4+, T8-) responded well to chemotherapy.
F Lauria, and
R Foa, and
D Raspadori, and
M R Motta, and
P L Tazzari, and
G Biagini, and
P Preda, and
R Algeri, and
S Tura
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British journal of haematology,
F Lauria, and
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G Biagini, and
P Preda, and
R Algeri, and
S Tura
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Best practice & research. Clinical haematology,
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