Expression profiles of the organic acid metabolism-associated genes during rat liver regeneration

In this study, 55 of the organic acid metabolism-involved genes were primarily confirmed to be associated with liver regeneration (LR) by bioinformatics and gene expression profiling analysis. Number of the initially and totally expressed genes occurring in initiation phase of LR, G(0)/G(1), cell proliferation, cell differentiation and liver tissue structure-function reconstruction were 21, 5, 33, 1 and 40, 20, 174, 44, respectively, illustrating that genes were initially expressed mainly in initiation stage, and worked in different phases. 151 times up-regulation and 114 times down-regulation as well as 14 types of expression patterns showed the diversification and complication of genes expression changes. It is inferred from the above gene expression changes and patterns that acetate biosynthesis enhanced at forepart, propionate biosynthesis at forepart, prophase and early metaphase, pyruvate biosynthesis at forepart, metaphase and anaphase, succinate biosynthesis at forepart and anaphase; malate biosynthesis in metaphase and N-acetylneuraminate biosynthesis at 36, 66 and 96 h. Whereas, carnitine biosynthsis attenuates at forepart and prophase, enhancement at middle metaphase; isocitrate in the forepart, quinolinate at forepart and early metaphase, creatine at early metaphase and fumarate at anaphase perform the restrained biosynthesis, respectively; catabolisms of propionate and pyruvate were depressed in metaphase.