Abstract:
:The effect that polymorphonuclear leukocytes (PMN) may have on the metastatic colonization of tumor cells is controversial: some laboratories have reported that PMN can inhibit metastasis whereas others have shown an augmentation effect. We have exploited our finding that a particular fibrosarcoma (BMT-11) transplanted subcutaneously into syngeneic C57BL/6 mice induces a progressive increase in the number of circulating PMN, to re-examine this question. We used such "granulocytosis-positive" mice as recipients of B16 melanoma cells to examine the influence of significant granulocytosis on the level of lung tumor colonies. The number of B16 melanoma lung colonies detected after intravenous (i.v.) injection was significantly higher in BMT-11 tumor-bearing mice with granulocytosis than in control (non-tumor-bearing) mice. Retention of 125IUdR-labelled B16 cells 24 hr after the i.v. injection was 3 to 10 times greater in mice with granulocytosis than in controls. Either simultaneous injection, or preinjection of PMN with B16 cells, increased the lung-colonizing capacity of B16 melanoma cells. These results suggest that abnormally increased numbers of PMN in the peripheral blood, particularly in the lung circulation, can enhance the ability of tumor cells to colonize or metastasize.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Ishikawa M,Koga Y,Hosokawa M,Kobayashi Hdoi
10.1002/ijc.2910370619subject
Has Abstractpub_date
1986-06-15 00:00:00pages
919-24issue
6eissn
0020-7136issn
1097-0215journal_volume
37pub_type
杂志文章abstract::Epidemiologic evidence is lacking for the association between alcohol consumption and the risk of breast cancer in Japanese women. We addressed this association in a prospective cohort study with an average follow-up of 7.6 years. At baseline (1988-1990), cohort participants completed a self-administered questionnaire...
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