Summary
Hepatocytes were enzymatically dissociated from the livers of rats maintained for eight weeks on diets of (1) standard rat chow, (2) chow plus 20% olive oil, and (3) chow plus 20% olive oil and 2% cholesterol. Cells were cultured for up to one week and characterized by phase contrast light microscopy and transmission electron microscopy. Cultured hepatocytes derived from the cholesterol-fed rats (3) were distinguishable by phase contrast light microscopy from those derived from chow-or chow plus olive oil-fed (1 and 2) cells, since they contained numerous refractile cytoplasmic structures. Transmission electron microscopy demonstrated that these structures were lipid droplets. Hepatocytes were observed to accumulate non-membrane bound cytoplasmic lipid droplets in the order control-fed <olive oil-fed <cholesterol-fed. In addition to varying quantitatively among the feeding groups, lipid droplets also varied in size and osmiophilia as a function of the feeding regimen. Other than the differential accumulation of lipid droplets, the ultrastructure of the cultured hepatocytes was similar among cells derived from the various feeding groups.
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Supported by a grant from the E.G. Schlieder Educational Foundation (R.L.M.) and NIH grants HL 23895 and HL25596, (R.A.D.). R.A.D. is an Established Investigator of the American Heart Association. The authors thank Ms. Toni Santee for typing and Ms. Carla Moses for editing this manuscript
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Moses, R.L., Delcarpio, J.B., McNeal, M.M. et al. Ultrastructure of cultured hepatocytes from fat- and cholesterol-fed rats. Virchows Archiv B Cell Pathol 41, 95–106 (1982). https://doi.org/10.1007/BF02890274
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DOI: https://doi.org/10.1007/BF02890274