Abstract
Because of certain analogies between the spread of tumors and different steps of pregnancy culminating in egg implantation and invasive growth, pregnant mice were treated at different intervals post coitum with two thrombocytopenic agents which can reduce metastases by interfering with vascular lodgement and growth of tumor cells. It was found that both neuraminidase and antiplatelet serum were active against pregnancy, the enzyme being by far the more effective of the two. The mechanism of this effect involves both egg implantation and egg development. The effect cannot be explained solely by the thrombocytopenia produced by both agents.
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Selected References
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- BOVING B. G. The biology of trophoblast. Ann N Y Acad Sci. 1959 Aug 28;80:21–43. doi: 10.1111/j.1749-6632.1959.tb49192.x. [DOI] [PubMed] [Google Scholar]
- CRUZ W. O. Quantitative method of titrating anti-platelet serum in vitro. J Immunol. 1953 Nov;71(5):346–351. [PubMed] [Google Scholar]
- FOWLER R. E., EDWARDS R. G. Induction of superovulation and pregnancy in mature mice by gonadotrophins. J Endocrinol. 1957 Sep;15(4):374–384. doi: 10.1677/joe.0.0150374. [DOI] [PubMed] [Google Scholar]
- GASIC G., GASIC T. Removal of sialic acid from the cell coat in tumor cells and vascular endothelium, and its effects on metastasis. Proc Natl Acad Sci U S A. 1962 Jul 15;48:1172–1177. doi: 10.1073/pnas.48.7.1172. [DOI] [PMC free article] [PubMed] [Google Scholar]
- GOT R., BOURRILLON R. Enzymic release of sialic acid and inactivation of human menopausal gonadotropin. Nature. 1961 Jan 21;189:234–235. doi: 10.1038/189234b0. [DOI] [PubMed] [Google Scholar]
- Gasic G. J., Gasic T. B., Stewart C. C. Antimetastatic effects associated with platelet reduction. Proc Natl Acad Sci U S A. 1968 Sep;61(1):46–52. doi: 10.1073/pnas.61.1.46. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Goverde B. C., Veenkamp F. J., Homan J. D. Studies on human chorionic gonadotrophin. II. Chemical composition and its relation to biological activity. Acta Endocrinol (Copenh) 1968 Sep;59(1):105–119. [PubMed] [Google Scholar]
- Potts D. M., Wilson I. B. The preimplantation conceptus of the mouse at 90 hours post coitum. J Anat. 1967 Nov;102(Pt 1):1–11. [PMC free article] [PubMed] [Google Scholar]
- SCHRAMM G., MOHR E. Purification of neuraminidase from Vibrio cholerae. Nature. 1959 Jun 13;183(4676):1677–1678. doi: 10.1038/1831677a0. [DOI] [PubMed] [Google Scholar]