Large granular lymphocytes (LGL) proliferation is characterized by expansion of cytotoxic lymphocytes and associated with neutropenia. In a case of CD3+ LGL-proliferation the epinephrine stimulation test (EST) induced a striking elevation of CD3+, CD8+, CD57+ LGL in peripheral blood from 2.7 x 10(9)/l to 20 x 10(9)/l and might be an additional diagnostic tool in patients with normal or low absolute numbers of circulating LGL. After treatment with steroids, plasma elastase--a marker of neutrophil destruction--decreased from 162 to 40 micrograms/l (normal < 47 micrograms/l) which correlated well with a simultaneous increase in peripheral neutrophil counts from 0.14 to 1.0 x 10(9)/l. This finding supports the hypothesis that neutropenia in CD3+ LGL proliferation is due to neutrophil destruction, possibly mediated by LGL.
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| http://dx.doi.org/10.1111/j.1365-2141.1995.tb08375.x | DOI Listing |
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