Oxidative stress in primary culture hepatocytes isolated from partially hepatectomized rats.
The aim of this study was to evaluate the influence of partial hepatectomy prior to cell isolation on hepatocytes in vitro. We characterized the possible changes of various stress oxidative parameters within the first 24 h after seeding. Male Wistar rats served as donors. Hepatocytes were isolated by collagenase digestion from either liver of simulated surgery (SH) or from liver 1 h after 70% hepatectomy (PH), and the changes in stress parameters were analyzed after 1, 3, 18, and 24 h in culture. At 24 h, only hepatocytes from PH maintained significantly increased reactive oxygen species production, oxidized glutathione percentage, and Cu/Zn superoxide dismutase and catalase activities. Our results show that hepatocytes suffer significant cell injury as a result of the isolation procedure, but primary cultured cells from SH metabolically recover from this stress after 18 h. After this time, primary culture hepatocytes primed by PH maintain their in vivo-like metabolic activities (increase in both oxidative stress and antioxidant status).
Instituto de Fisiología Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 570, 2000-Rosario, Argentina.
Daniel
D
Francés
M Teresa
MT
Ronco
Elena
E
Ochoa
M Luján
ML
Alvarez
Ariel
A
Quiroga
J Pablo
JP
Parody
Juan
J
Monti
M Cristina
MC
Carrillo
Cristina E
CE
Carnovale
D000818:Animals; D000975:Antioxidants / Q000378:metabolism*; D002374:Catalase / Q000378:metabolism; D002478:Cells, Cultured; D005978:Glutathione / Q000378:metabolism; D006498:Hepatectomy; D022781:Hepatocytes / Q000201:enzymology / Q000378:metabolism* / Q000473:pathology; D008115:Liver Regeneration / Q000502:physiology; D008297:Male; D008930:Mitochondria, Liver / Q000201:enzymology / Q000378:metabolism; D018384:Oxidative Stress; D051381:Rats; D017208:Rats, Wistar; D017382:Reactive Oxygen Species / Q000378:metabolism; D013482:Superoxide Dismutase / Q000378:metabolism; D013997:Time Factors
D000975:Antioxidants; D017382:Reactive Oxygen Species; D002374:Catalase; D013482:Superoxide Dismutase; D005978:Glutathione