Electron microscopy of isolated human hepatocytes. (Micromethods for scanning and transmission electron microscopy)
| Autor: | Guido Lüond, Richard Guggenheim, Georg A. Stalder, Gunthild Krey, Fred Gudat, Pietro Tondelli, Alessandro Trevisan, Leonardo Bianchi |
|---|---|
| Rok vydání: | 1983 |
| Předmět: |
Liver Diseases
Clinical Biochemistry Scanning confocal electron microscopy Temperature Centrifugation Immunogold labelling law.invention Bile canaliculus Oxygen chemistry.chemical_compound Microscopy Electron Osmium tetroxide chemistry Liver law Transmission electron microscopy Microscopy Biophysics Ultrastructure Microscopy Electron Scanning Humans Microscopy Phase-Contrast Electron microscope Cells Cultured |
| Zdroj: | La Ricerca in clinica e in laboratorio. 13(3) |
| ISSN: | 0390-5748 |
| Popis: | We have investigated, by scanning and transmission electron microscopy (SEM and TEM), the cell surface morphology of isolated human hepatocytes. For this purpose, liver cells were mechanically isolated from surgical or needle liver biopsies, fixed in 3% glutaraldehyde and post-fixed in 2% osmium tetroxide. In order to handle a low number of cells, a particular procedure for harvesting hepatocytes on coverslips has been developed for SEM and an in situ embedding procedure in polyethylene-embedding capsules was applied for TEM. A rough membrane exhibiting short, uniform microvilli and pores of 0.1 mu in diameter was the main feature of isolated liver cells. Furthermore, single hepatocytes showed no polarity and junctional or bile canaliculus remnants were rarely observed. However, differences in surface configuration were noted in relation to culture conditions, such as oxygen and temperature during isolation procedures. SEM, when controlled by TEM for intracellular preservation, is proposed as a reliable method for screening small quantities of hepatocyte suspensions, for intact cells and for the study of surface configuration under experimental conditions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|