Regional mRNA expression of key gluconeogenic enzymes in the liver of dairy cows.
Liver tissue was collected from eight random dairy cows at a slaughterhouse to test if gene expression of pyruvate carboxylase (PC), mitochondrial phosphoenolpyruvate carboxykinase (PEPCKm) and cytosolic phosphoenolpyruvate carboxykinase (PEPCKc) is different at different locations in the liver. Obtained liver samples were analysed for mRNA expression levels of PC, PEPCKc and PEPCKm and subjected to the MIXED procedure of SAS to test for the sampled locations with cow liver as repeated subject. Additionally, the general linear model procedure (GLM) for analysis of variance was applied to test for significant differences for mRNA abundance of PEPCKm, PEPCKc and bPC between the livers. In conclusion, this study demonstrated that mRNA abundance of PC, PEPCKc and PEPCKm is not different between locations in the liver but may differ between individual cows.
Van Dorland
H A
HA
Veterinary Physiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland. anette.vandorland@physio.unibe.ch
Bruckmaier
R M
RM
D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena / Q000502:physiology*; D000818:Animals; D002417:Cattle / Q000378:metabolism*; D003612:Dairying; D005260:Female; D015971:Gene Expression Regulation, Enzymologic; D005943:Gluconeogenesis / Q000502:physiology*; D008099:Liver / Q000201:enzymology*; D019764:Phosphoenolpyruvate Carboxykinase (ATP) / Q000378:metabolism; D010730:Phosphoenolpyruvate Carboxylase / Q000378:metabolism; D011766:Pyruvate Carboxylase / Q000378:metabolism; D012333:RNA, Messenger / Q000378:metabolism*
D012333:RNA, Messenger; D010730:Phosphoenolpyruvate Carboxylase; D019764:Phosphoenolpyruvate Carboxykinase (ATP); D011766:Pyruvate Carboxylase