Search PubMed⌕ Search

Biomedical subjects

R Auerbach

Publications and source records attributed to R Auerbach.

At least 127 records · Page 7Linked to original sources
PubMed1975

Tumor-induced angiogenesis: lack of inhibition by irradiation.

The effect of irradiation of tumors on their ability to induce vascular responses (angiogenesis) was studied. Rat Walker carcino-sarcoma 256, rabbit V2 carcinoma, mouse (C57B1) melanoma and mouse (129) teratoma (OTT 6050, 100K) were irradiated with up to 5000R, then grafted either to the chicken chorioallantoic membrane or intracorneally into adult rabbits to assess competence to provoke angiogenesis. For all tumors and both assay systems the results were similar: irradiation did not interfere with tumor-induced vascular responses.

Angiogenesis Inducing Agents↗
PubMed1975

A comparison of polyglycolic acid (Dexon), nylon and silk sutures in skin surgery.

Synthetic polyglycolic acid (Dexon) sutures were compared with silk or nylon in 50 patients requiring skin surgery. After some practice, polyglycolic acid is an easily handled as nylon or silk. Skin reactions occurred in 50% of the patients sutured with nylon, in 10% of those sutured with polyglycolic acid, and in none sutured with silk. Wound healing was satisfactory in all cases.

Adult↗
PubMed1974

Tolerance to heterologous erythrocytes.

Injection of a water-soluble nonantigenic fraction obtained from lysed sheep red blood cells virtually abolishes the subsequent immune response to the red cells. The suppression is systemic and appears to be serum mediated.

Animals↗
PubMed1973

Graft-vs.-host reaction in tissue culture.

The primary purpose of this study has been to validate the in vitro graft-vs.-host reaction as an experimental system. Time-dose studies have been presented for cells obtained from spleen, thymus, cortisone-treated thymus, inguinal lymph node, mesenteric lymph node, thoracic duct, and bone marrow cells. Both the degree of splenomegaly and the onset of spleen enlargement were found to be dependent on the number and source of cells tested. The effect of several immunosuppressive agents was examined. Amantadine was found to suppress completely the graft-vs.-host reaction in vitro when present at a concentration of 75 microg/ml. Pretreatment of effector cells with mitomycin C prevented their subsequent ability to cause a graft-vs.-host reaction. The effect of X irradiation on immunocompetence of spleen cells in vitro paralleled the known effect of irradiation on in vivo immunocompetence. Preimmunization did not increase the number or effectiveness of immunocompetent cells when measured under standard in vitro conditions. Preimmunization did, however, permit persistence of immunocompetence after immunosuppressive doses of X irradiation. Studies using congenic lines, moreover, indicated that the preimmunization effect could be demonstrated in strain combinations differing only in factors determined by the H-2 complex of genes. A weak graft-vs.-host reaction could be detected in strain combinations not involving differences at the H-2 locus. The potential of the in vitro graft-vs.-host reaction as a highly reproducible, quantifiable, internally controlled, and experimentally accessible system for study of such critical problems as cell differentiation and cell interactions is discussed.

Amantadine↗
PubMed1972

Induction of tolerance to sheep red blood cells.

Adult mice injected with a sheep red blood cell hemolysate supernatant fraction were found to have a severely reduced responsiveness to subsequent immunization with sheep red blood cells. The induced unresponsiveness was found to be specific, as tested by reciprocal experiments involving horse and sheep erythrocyte preparations. The tolerogenic material did not appear to be immunogenic.

Animals↗