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EFFECT OF BLOOD TRANSFUSIONS ON EXPERIMENTAL PULMONARY METASTASIS IN MICE
Author(s) -
SHIRWADKAR S.,
BLAJCHMAN M.A.,
FRAME B.,
ORR F.W.,
SINGAL D.P.
Publication year - 1990
Publication title -
transfusion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.045
H-Index - 132
eISSN - 1537-2995
pISSN - 0041-1132
DOI - 10.1046/j.1537-2995.1990.30290162909.x
Subject(s) - medicine , fibrosarcoma , saline , metastasis , inoculation , experimental pathology , ratón , immunology , blood transfusion , pathology , cancer , biology , in vitro , biochemistry
We examined the effect of allogeneic blood transfusions (BT) on pulmonary metastases in a mouse model. Recipient (C57B1/6J) mice were transfused with either saline, syngeneic blood or allogeneic (Balb/c) blood on two occasions, days 0 and 3. One week after the last transfusion, recipient mice were injected intravenously with varying numbers of methylcholanthrene‐induced fibrosarcoma cells. Twenty days later the number of pleural nodules was counted as an index of pulmonary metastasis. The data demonstrate that the inoculation of 2.5 times 10 5 or 1 times 10 5 tumor cells resulted in significantly higher numbers of pulmonary metastases in mice that received allogeneic BT than the mice that received syngeneic blood or saline. In contrast, allogeneic BT caused significant inhibition of pulmonary metastases in mice that received 3.5 times 10 5 tumor cells. The data suggest that the immunomodulatory (stimulatory or inhibitory) effect of BT is dependent on the numbers of tumor cells inoculated. It is likely that the conflicting reports in the literature on the effects of BT on tumor growth may be due to inoculation of different numbers of tumor cells. These results have an important bearing in understanding the effect of allogeneic BT on tumor growth both in experimental animals and in cancer patients.