title: [Effect of traxanox on antibody formation in C57BL/6 mice].
abstract: C57BL/6 mice, lower responders to sheep red blood cells (SRBC), were intraperitoneally immunized with 5 X 10(8) SRBC on day 0. Traxanox (10 and 30 mg/kg) administered orally on days 0 and 1 potentiated the production of spleen- and thymus-rosette forming cells (RFC) assessed on day 7. The production of hemolytic plaque forming cells (HPFC) to SRBC in the spleen of the syngeneic recipient mice assessed on day 4 was inhibited by the transfer of spleen-RFC obtained from the vehicle-treated donor mice, but not by that obtained from the traxanox (30 mg/kg)-treated donor mice. The same results were obtained in the thymectomized-recipient mice. The activity of the spleen-RFC obtained from the vehicle-treated donor mice was abolished by treatment with anti-Thy 1.2 or anti-Lyt 2.2 antibody and complement. On the other hand, the activity of the spleen-RFC obtained from the traxanox-treated donor mice was abolished by treatment with anti-Lyt 1.2 antiserum and complement. Traxanox (3 and 30 mg/kg) also caused the induction of the Thy 1.2-positive RFC in the spleen of the thymectomized mice. These results suggest that traxanox has a capacity to potentiate the immune responses to SRBC in C57BL/6 mice by the induction of Lyt 1.2-positive cells (helper T cells).
mesh_terms: D000276:Adjuvants, Immunologic; D000818:Animals; D000917:Antibody Formation / Q000187:drug effects*; D002867:Chromones / Q000494:pharmacology*; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D006462:Hemolytic Plaque Technique; D007518:Isoantibodies / Q000096:biosynthesis; D051379:Mice; D008810:Mice, Inbred C57BL; D051381:Rats; D012397:Rosette Formation; D012756:Sheep / Q000276:immunology; D013154:Spleen / Q000187:drug effects; D013601:T-Lymphocytes / Q000187:drug effects
chemical_list: D000276:Adjuvants, Immunologic; D002867:Chromones; D007518:Isoantibodies; C029805:Lyt antibodies; C035678:anti-Thy antibody; C020178:traxanox