Behaviour of nucleolar organizer regions in the different Wistar rat liver lobes.
The area and number of silver-nucleolar organizer regions (Ag-NORs) in the hepatic lobes were determined in 3 male Wistar rats. There was a statistically significant increase in the percentage of Ag-NORs per nucleus in the right lateral and caudate lobe in relation to the left lateral and middle lobes. The area and number of Ag-NORs are greater in the caudate and right lateral lobes in relation to the left lateral and middle lobes. Since the Ag-NOR is a parameter which indicates hepatocytic protein synthesis, the different activity which corresponds to each lobe of the rat's liver makes it possible to assume that there is a functional heterogeneity which should be considered in the study of the hepatic regeneration according to the type of partial hepatectomy carried out.
Garcia-Moreno
L
L
Psychobiology Laboratory, Psychology Faculty, University of Oviedo, Spain.
Vallejo
G
G
Arias
J L
JL
Aller
M A
MA
Lorente
L
L
Arias
J
J
D000818:Animals; D002467:Cell Nucleus / Q000648:ultrastructure; D008099:Liver / Q000648:ultrastructure*; D008297:Male; D009697:Nucleolus Organizer Region / Q000648:ultrastructure*; D051381:Rats; D017208:Rats, Wistar; D016622:Silver Staining