The ethanol effect on lung metastases development in experimental Morris 5123 hepatoma.
1997
: The experiment was carried out on 45 male Wistar rats which were divided into 3 groups: group I-15 rats which were given water to drink during the experiment, group II-15 rats obtaining 10% ethanol solution during the experiment and group III-15 rats obtaining 20% ethanol solution during the experiment. All animals were injected 0.3 ml suspension of hepatoma Morris 5123 cells directly to the liver on the 14th day of the experiment. After the 9 weeks of the experiment the animals from all groups were narcotized, decapitated and the lungs were taken into the morphometric, histological and ultrastructural examinations. They showed that ethanol has a stimulating effect on formation and development of hepatoma Morris 5123 in rat lungs. The increase of number and extensiveness of metastases as well as the increase of mean metastases focuses volume, and the increase of lung weight in animals which obtained ethanol are the exponent of the influence. On the basis of ultrastructural examinations, it can be noted that promoting activity of ethanol can be connected: a) with the increase of neoplastic cells activity, b) with changes appearing in pulmonic epithelium and endothelium of vessel enabling neoplastic cells to adhere to basal membrane as well as their crossing the vessel wall.
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