Behavioral and Brain Gene and Protein Changes in Female Mice Consuming Ethanol During Pregnancy and Lactation.

Alcohol consumption during pregnancy and lactation remains a significant global issue. Preventive policies have proven insufficient, and consumption rates remain high, mainly due to a lack of awareness, the misconception that only high alcohol intake harms the fetus, inconsistent medical advice, and pre-existing alcohol use disorders. Alcohol consumption is linked to child harm during critical stages of development. Using a recently published model of fetal alcohol spectrum disorder (FASD) developed by our group, we analyzed brain changes in mothers who consumed alcohol during pregnancy and lactation and the behavioral consequences at the emotional-cognitive level and in caring for their offspring. We also considered the previous drinking history, using the paradigm of voluntary pre-gestational alcohol consumption. In addition, from gestational day 7 (GD7) until the day of sacrifice, mothers received a 3 g/kg dose of alcohol every 12 h via gavage. Our findings revealed deficiencies in maternal care, anxiety and depressive-like behavior, and aversive stimulus learning disturbances. These were associated with changes in gene targets linked to stress-axis regulation, reward circuits, and neuroplasticity. Additionally, we observed increased microgliosis and astrogliosis, indicating neuroinflammation in brain regions involved in cognition and emotional states' regulation.