Effects of sucrose on opioid gene expression in the rat brain.

Eun-Mee Kim, Catherine C. Welch, Martha K. Grace, Allen S. Levine, Eugene O'Hare

Research output: Contribution to journalArticlepeer-review


Opioid peptide neurotransmitters stimulate feeding and are involved in mediating the rewarding aspects of feeding, as well as in energy regulation in the brain. The effects of sucrose diets on opioid peptide gene expression were measured in the arcuate nucleus (ARC) and the paraventricular nucleus (PVN) of the rat. Rats were fed a cornstarch-based diet or a low (16.7%), medium (33.4%), or high (50%) sucrose containing diet for 7 days. Analyses of the ARC and PVN demonstrated that sucrose in the diet had no effect on mRNA levels of opioid peptides. The lack of an opioid response in the ARC and PVN suggests that opioids in the ARC and PVN are involved in energy regulation rather than in mediating hedonic aspects of feeding.
Original languageEnglish
Pages (from-to)59-62
Number of pages3
JournalInternational Proceedings of Chemical, Biological and Environmental Engineering
Publication statusPublished - 2014

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