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. 1979 Jan;13(1):1-9.
doi: 10.1258/002367779781071230.

Deposition of amyloid in the liver of hamsters: an enzyme-histochemical and electron-microscopical study

E Gruys, H J Timmermans, A M van Ederen

Deposition of amyloid in the liver of hamsters: an enzyme-histochemical and electron-microscopical study

E Gruys et al. Lab Anim. 1979 Jan.

Abstract

In induced amyloidosis the amyloid was first deposited in the portal areas, then in the centre of the lobule and disseminated through it in the spaces of Disse. No intracellular amyloid was found in the predeposit phase. In the hepatic lobule both mononuclear phagocytes and hepatocytes showed a topographic relationship to the first deposits of amyloid. Some macrophages showed invaginations or vacuoles containing amyloid fibrils. Between the microvilli of hepatocytes, parallel amyloid fibrils occurred. Between the amyloid fibrils were 30-50 nm membrane-bounded spherical particles which may have been lipoprotein aggregates. There was no large-scale phagocytosis of amyloid during the induction period or after survival without casein treatment up to 18 weeks. Lysosomal enzyme activity was seen in the deposits of extracellular amyloid.

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