Hepatic ultrastructural specialization in Antarctic fishes

Joseph T. Eastman, Arthur L. DeVries

Research output: Contribution to journalArticle

Abstract

Compared with those of other vertebrate animals, the livers of Antarctic fishes have a unique type of perisinusoidal (Ito) cell. These cells were studied in 9 species with emphasis on Dissostichus mawsoni. Perisinusoidal cells are found in large numbers throughout the liver, have long cytoplasmic arms and, in Dissostichus, contain numerous lipid droplets. The extensive rough endoplasmic reticulum and prominent nucleolus are ultrastructural characteristics indicating that these cells are engaged in protein synthesis. An evolutionary specialization, perisinusoidal cells may be partially responsible for the elevated levels of protein synthesis characteristic of fishes in the Antarctic marine environment.

Original languageEnglish (US)
Pages (from-to)489-496
Number of pages8
JournalCell and Tissue Research
Volume219
Issue number3
DOIs
StatePublished - Sep 1 1981

Keywords

  • Antarctic fishes
  • Liver
  • Perisinusoidal cell
  • Protein

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Histology
  • Cell Biology

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