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Amsacrine-induced cytoplasmic rods.

J J Berman1

  • 1Department of Pathology, V.A. Medical Center, Baltimore, Maryland.

Journal of Submicroscopic Cytology and Pathology
|January 1, 1989
PubMed
Summary
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Amsacrine causes unique cytoplasmic rods in cultured rat liver cells. These newly identified structures appear after drug treatment and may relate to amsacrine

Area of Science:

  • Hepatocyte cell biology
  • Drug-induced cellular morphology
  • Cytoskeletal research

Background:

  • Adult rat liver (ARL6T) cells are a model for studying liver cell responses.
  • Amsacrosine is an antineoplastic agent with known mechanisms of action.
  • Novel drug-induced cellular changes require thorough investigation.

Purpose of the Study:

  • To characterize the novel cytoplasmic rod structures induced by amsacrine in ARL6T cells.
  • To document the time-course and morphology of amsacrine-induced rods.
  • To establish this as a new observable drug effect.

Main Methods:

  • Culture of adult rat liver epithelial cells (ARL6T).
  • Treatment of cells with 10 microM amsacrine.
  • Light and electron microscopy for ultrastructural examination.

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Main Results:

  • Cytoplasmic rods became visible within 2 hours of amsacrine treatment.
  • Nearly all cells exhibited multiple rods by 24 hours.
  • Ultrastructural analysis revealed rods measuring 5-10 microns in length and 0.2-0.3 microns in width.

Conclusions:

  • Amsacrine consistently induces a novel morphologic finding (cytoplasmic rods) in ARL6T cells.
  • These rods are a specific drug effect, not observed in untreated cells.
  • The formation mechanism and role in amsacrine cytotoxicity remain to be elucidated.