摘要

Pig fat accumulation can be reduced by feeding pigs with high dosages of clenbuterol, but the molecular mechanism has not yet been well characterized. cDNA microarray and real-time PCR were used to identify the molecules potentially responding to clenbuterol in adipose cells. The mRNAs of 17 genes were found to be differentially expressed more than 2 fold (ratios of the expression levels in the test pigs to those in the control pigs of more than 2 or less than 0.5) by microarray analysis, including three lipid metabolism related genes (apolipoprotein D, apolipoprotein R and ST6GalNAc4). Eight genes were verified by real-time PCR, with six of them reproducing the result from microarray analyses. The results showed that apolipoprotein D, apolipoprotein R and ST6GalNAc4 genes respond to clenbuterol administration in pig adipose tissue and their functions may relate to fat accumulation reduction.

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