Function and expression of a human idiotypic network in Schistosomiasis japonica.


The cross-reactive idiotype (Hu-SJ-CRIM) is defined by polyclonal human anti-idiotypic antibodies derived from chronically S. japonicum infected patients. The present study shows that serum levels of Hu-SJ-CRIM expressed by antibodies to S. japonicum soluble egg antigen (SEA) are associated with acute infection and hepatosplenic disease. Xenogeneic anti-idiotypic antisera (anti-Hu-SJ-CRIM) suppressed human lymphocyte blastogenesis to SEA in vitro by 47-82% (P < 0.05). These anti-idiotypic antibodies also suppressed in vitro granuloma formation induced by SEA coated heads in a dose dependent manner. This immunosuppression was antigen specific in that mitogen (PHA) or non-related antigen (PPD) induced blastogenic responses were not suppressed. Surprisingly, anti-idiotypic antibodies (anti-SJ-CRIM), which describe the mouse correlate CRIM were not suppressive in the human blastogenesis or in vitro granuloma formation assays. These data indicate a dichotomy in the function and specificity of the idiotype/anti-idiotype human and murine immune networks in S. japonicum infection. Thus, only the patient derived molecules and serology form the basis for an immunoregulatory network in Schistosomiasis japonica.

Cite this paper

@article{Wisnewski1996FunctionAE, title={Function and expression of a human idiotypic network in Schistosomiasis japonica.}, author={Adam V Wisnewski and G. Richard Olds and Jennifer H. Johnson and Bartolom{\'e} Ram{\'i}rez and Thomas F . Kresina}, journal={Parasite immunology}, year={1996}, volume={18 9}, pages={439-47} }