Acute d-fenfluramine, but not fluoxetine decreases sweet intake in BALB/c, C57BL/6 and SWR inbred mouse strains
2020
Mustac, Tatjana | Yuabov, Asnat | Macanian, Jason | Aminov, Sonya | Fazylov, David | Lulu, Eden Ben | Nashed, Mirna | Albakry, Ahmed | Jean-Philippe-Morisset, Bruneskidvi | Bodnar, Richard J.
Dopamine, opioid and muscarinic receptor antagonists differentially reduce sucrose and saccharin intakes across inbred mouse strains. Whereas these systems stimulate sweet intake, serotonin signaling inhibits food intake. The present study examined whether fluoxetine (0.1–10 mg/kg) or d-fenfluramine (0.1–6 mg/kg) differentially inhibited sucrose or saccharin intake in BALB/c, C57BL/6 and SWR mice. Fluoxetine marginally altered sucrose intake in all strains. d-fenfluramine significantly, but quite similarly reduced (ID₄₀) sucrose and saccharin intake in BALB/c (5.7 vs. 5.8 mg/kg), C57BL/6 (4.4 vs. 4.3 mg/kg) and SWR (4.6 vs. 5.6 mg/kg) mice, suggesting serotonin-induced inhibition of orosensory mechanisms in all three inbred mouse strains.
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