Contribution of interleukin-1 to Th1- and Th2-dependent variants of chronic graft-versus-host reaction.

Semiallogenic transfer of lymphoid cells from parental DBA/2 strain to (C57Bl/6xDBA/2)F1 hybrids induces two variants of chronic graft-versus-host reaction with predominant activation of donor Th1 or Th2 cells [2] in genetically homologous recipients: first, severe inhibition of the humoral immune response, or second, autoimmune disease (lupus nephritis) against the background of suppressed cell and humoral immunity. These variants of chronic graft-versus-host reaction are characterized by different changes in interleukin-1 level.