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Étude expérimentale de la diffusion métastatique chez l'œuf de poule embryonné. Répartition, microscopie et ultrastructure des foyers tumoraux
Author(s) -
Vlaeminck M. N.,
Adenis L.,
Mouton Y.,
Demaille A.
Publication year - 1972
Publication title -
international journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.475
H-Index - 234
eISSN - 1097-0215
pISSN - 0020-7136
DOI - 10.1002/ijc.2910100322
Subject(s) - chorioallantoic membrane , ultrastructure , metastasis , spleen , pathology , basal membrane , anatomy , biology , chemistry , medicine , cancer , embryo , microbiology and biotechnology , immunology
The injection of mouse ascite Ehrlich carcinoma cells into a vein in the chorioallantoic membrane of chick embryos at the eleventh day of incubation permits the observation of tumoral focuses analogous to metastasis in intra‐ or extraembryonic viscera, in 70% of embryos, dead or killed between the seventeenth and the twenty first day of incubation. A very clear selectivity can be observed in the invasion of the different organs by the carcinoma cells. The liver is injured most, with a level of metastasis of about 25%, while the spleen is almost never injured. Between these two extremes are ranged the brain, heart, nephros and lungs. The frequency of tumoral nodules in the chorioallantoic membrane, and the richly vascularized mesenchymatous structure of this organ allows for some aspects of tumoral invasion to be analyzed, particularly the relationship between cancer cells and blood vessels. As shown by electron microscopy, the passage of the cancer cells through the capillary barrier is achieved successively by apposition to the outer wall of the vessel, distribution of the basal membrane, endothelialisation and then immediate embolisation without associated thrombosis.