title: Receptors for the third component of complement: their association with maturation stage in non-Hodgkin lymphomas (NHL) and their possible implication with the development of follicular structures.
abstract: In the majority of 188 non-Hodgkin lymphomas (NHL) investigated in this study, we found a simultaneous expression of the receptors for c3b and c3d (CR1 & CR2; cccorr = 0.69, P less than 0.0005). An analysis of the different histological entities of the Kiel classification revealed that this coexpression was most pronounced for germinal centre-derived (cccorr = 0.63, P = 0.0004) and immunocytic NHL (cccorr = 0.86, P = 0.0024), whereas in chronic lymphocytic leukaemias there tended to be a more heterogeneous pattern of complement receptor (CR) expression (cccorr = 0.29, P greater than 0.10). In contrast to these NHL of mid B cell stage, most of the NHL of early (i.e. acute lymphocytic leukaemia, lymphoblastic NHL) and late B cell stage (i.e. hairy cell leukaemia, immunoblastic NHL, multiple myeloma) did not express either of these receptors. CR positive NHL often showed a follicular arrangement of the neoplastic cells and had higher numbers of T helper/inducer (T4) lymphocytes (PCR1 less than 0.00005, PCR2 less than 0.05). Some cases of mid B cell NHL and all cases of hairy cell leukaemia reacted with antibodies against CR3 (i.e. the ic3b receptor).
mesh_terms: D001402:B-Lymphocytes / Q000473:pathology; D002454:Cell Differentiation; D002465:Cell Movement; D006801:Humans; D007938:Leukemia / Q000276:immunology* / Q000473:pathology; D008223:Lymphoma / Q000276:immunology* / Q000473:pathology; D011951:Receptors, Complement / Q000032:analysis*; D017463:Receptors, Complement 3b; D017464:Receptors, Complement 3d
chemical_list: D011951:Receptors, Complement; D017463:Receptors, Complement 3b; D017464:Receptors, Complement 3d