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[Type A adenocarcinoma grafted into C3H/he mice subjected to treatment with various antineoplastic agents. II.
Abstract:
We studied the histopathological and ultrastructural modifications which the adenocarcinoma type A grafted to C3 H/he-M mice manifested on being treated with vincristine, prospidium chloride and adriamycin. With M/O the tumors treated with prospidium chloride and adriamycin showed a greater proportion of connective stroma and numerous extensive parenchymatous necrosis. Ultrastructurally, in these groups, atypical mitoses were observed with multiple chromosomal fragmentations which can be related to the pharmacological action mechanism. A decrease in the number of viral particles was seen throughout the treatment.
Insights
Vincristine, prospidium chloride, and adriamycin treatments on adenocarcinoma in mice induced significant tumor necrosis and atypical cell structures. Viral particle counts decreased during treatment, suggesting drug efficacy.
Area of Science:
- Oncology
- Pharmacology
- Pathology
Background:
- Adenocarcinoma type A is a common cancer model in research.
- Understanding drug effects on tumor microenvironment is crucial for treatment development.
Purpose of the Study:
- To investigate the histopathological and ultrastructural effects of vincristine, prospidium chloride, and adriamycin on adenocarcinoma type A in C3 H/he-M mice.
- To correlate observed cellular changes with the drugs' pharmacological mechanisms.
Main Methods:
- Grafting adenocarcinoma type A to C3 H/he-M mice.
- Treating tumor-bearing mice with vincristine, prospidium chloride, and adriamycin.
- Histopathological and ultrastructural examination of tumor tissues using microscopy (M/O).
Main Results:
- Prospidium chloride and adriamycin treatments led to increased connective stroma and extensive parenchymal necrosis.
- Ultrastructural analysis revealed atypical mitoses with chromosomal fragmentations in treated tumors.
- A reduction in viral particle numbers was observed across all treatment groups.
Conclusions:
- Vincristine, prospidium chloride, and adriamycin exhibit cytotoxic effects on adenocarcinoma type A.
- Observed ultrastructural changes, including chromosomal fragmentation, indicate the drugs' impact on cell division.
- The decrease in viral particles suggests a potential oncolytic or antiviral effect of the chemotherapeutic agents.