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Biomedical subjects

N Goya

Publications and source records attributed to N Goya.

At least 91 records · Page 5Linked to original sources
PubMed1978

Experimental models for prevention of graft-versus-host reaction in bone marrow transfusion. II. Inability to prevent graft-versus-host reaction in an H-2 identical combination.

Splenomegaly was strong in the degree and continued for a long period of time in adult F1 hybrids between AKR (H-2k) and C3H/He (H-2k) mice after transfer of spleen cells from normal C3H/He mice. In spleen cells of such F1 recipients, cytotoxicity was detected by an in vivo neutralization test using methylcholanthrene-induced sarcoma or AKR origin as target cells. All of newborn F1 recipients died within 17 days after cell transfer. Induction of splenomegaly and cytotoxicity was not prevented by repeated pretreatments of donors with sonicated AKR spleen cells in saline, which suppressed completely such phenomena of graft-versus-host reaction in an H-2 nonidentical combination. Induction of cytotoxicity in the spleen of F1 recipients was not prevented by a pretreatment of donors with AKR spleen cells in complete Freund's adjuvant, which suppressed the induction of cytotoxicity in an H-2 nonidentical combination. Graft-versus-host reaction appears to be stronger in a combination between parental strains of which major histocompatibility antigens were identical.

Animals↗
PubMed1978

Experimental models for prevention of graft-versus-host reaction in bone marrow transfution. III. Reversible and irreversible differentiation of lymphocytes destined for cytotoxicity to effector cells for splenomegaly.

When lymphoid cells were obtained from AKR donors 12 h after a treatment with C57BL/L cells in complete Freund's adjuvant and transferred to (AKR X C57BL/6) F1 mice, splenomegaly in F1 recipients was augmented but cytotoxicity was suppressed. The suppression of cytotoxicity was antigen-specific. When cell transfer was carried out at stages as early as 3 or 6 h after the treatment of donors, cytotoxicity was enhanced but splenomegaly was suppressed. Irreversible deviation of immune response from the generation of cytotoxicity to the development of splenomegaly appears to occur within 12 h after such a treatment of donors.

Bone Marrow Transplantation↗
PubMed1976

Experimental models for prevention of graft-versus-host reaction in bone marrow transfusion. I. Selective suppression and augmentation of splenomegaly and cytotoxicity.

Induction and suppression of splenomegaly and cytotoxicity against C57BL/L cells were studied in (AKR X C57BL/6) F1 hybrid adult mice after the transfer of AKR lymphoid and bone marrow cells. 1) Splenomegaly and cytotoxicity were dissociated in the developmental stages of the graft-versus-host reaction. When lymphoid and bone marrow cells of normal AKR mice were injected into F1 recipients, splenomegaly was prominent on days 5 and 7, but cytotoxicity of spleen cells was not detected. Splenomegaly became less prominent but the cytotoxicity became detectable on day 14 after the injection. 2) Cytotoxic activity of spleen cells of F1 recipients was suppressed by the treatment of AKR donors with C57BL/6 lymphoid cells in Freund's complete adjuvant. Splenomegaly, however, was substantially enhanced by such a treatment of the donors. On the other hand, induction of the cytotoxic activity was facilitated by the treatment of donors with C57BL/6 skin grafts. 3) F1 hybrid mice could be protected from the graft-versus-host reaction by the injection of AKR anti-C57BL/6 serum or pretreatment of AKR donors with sonicated cellular antigens of C57BL/6.

Animals↗