Jul 1, 1976

Effect of six weekly transfusions on canine marrow grafts: tests for sensitization and abrogation of sensitization by procarbazine and antithymocyte serum

The Journal of Immunology : Official Journal of the American Association of Immunologists
P L WeidenG E Sale

Abstract

We have previously shown that blood transfusions can immunize a dog and lead to rejection of a subsequent marrow graft despite lethal total body irradiation (TBI). Sensitization to histocompatibility antigens induced by two prior transfusions of whole blood could be overcome by a regimen of procarbazine and anti-thymocyte serum (ATS) preceding TBI. The current study investigated a) whether this regimen could abrogate sensitization induced by six weekly transfusions given from days --50 to --15 preceding a marrow graft, and b) whether platelet survival studies and two in vitro tests of immunity could predict marrow graft rejection. All donor-recipient pairs were histoincompatible, unrelated, and of different breed. Twenty-two recipients received platelet concentrate transfusions and eight received whole blood transfusions. Recipients were given 1200 R TBI and a graft of marrow and peripheral blood leukocytes from the transfusion donor on day 0. Three of 15 recipients (20%) given procarbazine, 12.5 mg/kg i.v. on days --8, --6, and --4, and ATS, 0.6 ml/kg subcutaneously on days --7, --5 and --3, Rejected their grafts, whereas 11 of 15 dogs (73%) not given procarbazine and ATS rejected their grafts (p less than 0.01). Serum lymphoc...Continue Reading

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Mentioned in this Paper

Procarbazine
Sialadenitis
Histocompatibility Antigens
Whole Blood
Thymocyte
Graft Vs Host Reaction
Platelet concentrate
Lymphocytotoxic Antibodies
PLEK
Body Surface Area Formula for Dogs

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