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Vives Corrons, J.L. et al.

Combined assay of adenosine deaminase, purine nucleoside phosphorylase, and lactate dehydrogenase in the early clinical evaluation of B-chronic lymphocytic leukemia.

The levels of adenosine deaminase (ADA), purine nucleoside phosphorylase (PNP), lactic dehydrogenase (LDH), and LDH isoenzyme patterns (LD1 to LD5) have been measured in lymphocyte extract from 28 patients with B-chronic lymphocytic leukemia (B-CLL). The activities of ADA, PNP, and LDH have been correlated with two morphological groups of B-CLL classified according to the percentage of large, nongranular, atypical lymphocytes (AL) in peripheral blood: "typical" B-CLL (less than 10% of AL, 21 cases) and "atypical" B-CLL (10-25% of AL, seven cases). Patients with atypical B-CLL had significantly (P less than 0.001) higher activities of ADA (0.46 +/- 0.17 U/10(9) cells), PNP (1.74 +/- 1.0 U/10(9) cells), and LDH (48.3 +/- 9.7 U/10(9) cells) than patients with typical B-CLL (ADA, 0.29 +/- 0.1 U/10(9) cells; PNP, 0.58 +/- 0.23 U/10(9) cells; and LDH, 29 +/- 10 U/10(9) cells). In addition, the "treatment-free period" was also significantly (P less than 0.025) shorter in the group of atypical B-CLL compared with the typical B-CLL group. No clear-cut statistical differences in lymphocyte surface markers or in several other prognostic factors between the two subgroups of B-CLL were found. The present study supports the idea that in B-CLL the simultaneous determination of ADA, PNP, and LDH might be helpful in better understanding the pathophysiology, prognosis, and natural history of the disease.[1]

References

Combined assay of adenosine deaminase, purine nucleoside phosphorylase, and lactate dehydrogenase in the early clinical evaluation of B-chronic lymphocytic leukemia. Vives Corrons, J.L., Rozman, C., Pujades, M.A., Colomer, D., Perez Vila, E., Anegon, I., Gallart, T., Vives Puiggrós, J., Viñolas, N., Montserrat, E. Am. J. Hematol. (1988) [Pubmed]

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