Interleukin-10 (IL-10) has multiple effects on lymphoid development, p
articularly as a stimulant of activated B-cell proliferation and diffe
rentiation. It is thought that IL-10 might play a role in the developm
ent of B lymphoid malignancies based on the observation that lymphomat
ous tissues from HIV+ patients contain numerous cells containing IL-10
mRNA as well as IL-10 protein. The aim of this study using an Elisa t
est was to analyze IL-10 in the serum of 18 HIV+ patients with non Hod
gkin's B lymphoma (NHL) and compared the presence of this cytokine in
the serum of 18 HIV+ patients without NHL. In this comparitive study w
e also considered the different parameters such as the mode of contami
nation, sex, age and number of CD4 cells. 44% of the patients with HIV
-related NHL had significant levels of IL-10 (greater than or equal to
12 pg/ml) in their serum, in comparison to the patients without NHL w
ho did not show detectable serum IL-10.