Fig. 5From: Obese-associated gut microbes and derived phenolic metabolite as mediators of excessive motivation for food rewardDopaminergic and opioid systems of gut microbiota recipient mice from obese donors are downregulated. Nucleus accumbens mRNA expressions of a c-fos, b dopamine receptor 2 (Drd2), dopamine receptor 1 (Drd1), tyrosine hydroxylase (Th), dopamine transporter (Dat), and c µ-opioid receptor (Oprm), κ-opioid receptor (Oprk), δ-opioid receptor (Oprd), and pre-prodynorphin (Pdyn) measured by qPCR in gut microbiota recipient mice from lean (Lean_rec) and diet-induced obese donor mice (DIO_rec). Data are shown as mean ± SEM (n=7–8/group). p-values were obtained after unpaired Student’s t test or non-parametric Mann-Whitney test. * : p-value ≤ 0.05Back to article page