Cellular blebbing in superficial colonic epithelial cells occurring with murine graft-versus-host disease

M. L. Eigenbrodt, E. H. Eigenbrodt, J. S. Kneitz, Dwain L Thiele

Research output: Contribution to journalArticle

Abstract

Subnuclear blebbing of the superficial colonic epithelium, a rarely described light and electron microscopic change in graft-versus-host disease (GVHD), was studied in a murine model of GVHD. Severity of changes induced by transfer of various donor T cell subsets to irradiated, allogeneic recipients, and association with more severe alterations such as erosions and ulceration were evaluated. By light microscopy the basal region of the superficial enterocytes was greatly expanded by eosinophilic to amphophilic, flocculent, sometimes vacuolated material. By electron microscopy these changes were found to be organelle-poor, cytoplasm-filled protrusions from the basal surface of the epithelium. In this model, helper T cells (CD4+-enriched, CD8+-depleted T cells) transplanted after high dose irradiation were capable of causing the change suggesting cytokine responses may be involved in mediating the cellular injury seen histologically. Close association of blebbing and erosions suggest the blebbing may be the precursor to epithelial erosion or denudation seen in severe intestinal GVHD.

Original languageEnglish (US)
Pages (from-to)61-67
Number of pages7
JournalVirchows Archiv
Volume426
Issue number1
DOIs
StatePublished - Feb 1 1995

Keywords

  • Cell blebs
  • Electron microscopy
  • Graft-versus-host disease
  • Light microscopy

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Molecular Biology
  • Cell Biology

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