Serotonin neurons in the dorsal raphe control food-craving-like behavior during pregnancy in mice.

Reduced serotonin neuron activity in the dorsal raphe during pregnancy drives food-craving-like behavior in mice, with SK3 ion channels playing a key role.

• Why it matters: Understanding neural mechanisms behind pregnancy-related changes in food intake can inform treatments for appetite dysregulation and maternal obesity, which are significant health concerns.
• What they did: Researchers used genetic and viral techniques to manipulate SK3 channels and serotonin neuron activity in female mice, observing effects on food cravings during pregnancy and in virgin controls.
• The result: Modulating SK3 activity altered food-craving behaviors, revealing that serotonin signaling via the dorsal raphe influences pregnancy-associated appetite changes, offering potential therapeutic targets.