A new study published in Metabolic Brain Disease finds that cannabidiol (CBD) may help protect the brains of offspring born to obese mothers by reducing cell death signals and restoring healthy glial cell function.
Researchers from the Federal University of Health Sciences of Porto Alegre tested how maternal obesity during pregnancy and lactation affected brain health in rats, and whether CBD could reverse harmful effects. Obesity induced by a cafeteria diet led to increased markers of cell death (BAD, JNK) and inflammation in the prefrontal cortex of adult offspring. These changes were tied to altered astrocyte and microglial activity, creating a brain environment prone to degeneration.
When offspring were treated with oral CBD for three weeks, many of these abnormalities were reduced. In males, CBD reversed the loss of astrocytes and microglia, while in females it lowered JNK and AKT concentrations. CBD also reduced elevated levels of BAD and normalized inflammatory responses, including TNFα expression.
“These findings suggest that maternal obesity promotes a pro-apoptotic and inflammatory brain environment, and CBD may counteract these effects via modulation of glial activity and apoptotic pathways”, states the study.
The study’s full abstract can be found below:
Maternal obesity during pregnancy poses significant health risks for both mother and progeny, including long-term impacts on brain function. In previous studies, we demonstrated that cafeteria diet (CAF) consumption during gestation induces neuroinflammation and behavioral deficits in the offspring, which are reversed by cannabidiol (CBD) treatment. However, the effects of CBD on apoptosis-related pathways in this context remain unclear. Here, we investigated whether CBD treatment can modulate pro-apoptotic signaling and glial cells morphology in adult offspring of obese mothers. Wistar rats were fed a CAF for 12 weeks before mating, during pregnancy, and lactation. Offspring received oral CBD (50 mg/kg) for 3 weeks starting at postnatal day 70. In the prefrontal cortex, we assessed apoptosis-related proteins, TNFα gene expression, and astrocytes and microglia morphology. Male and female offspring of CAF-fed dams showed increased levels of BAD, which were mitigated by CBD treatment. JNK was also elevated in female offspring of obese mothers, and CBD reduced this increase. In females, CBD treatment led to a decrease in AKT concentrations. TNFα expression was elevated in the prefrontal cortex of male offspring of obese mothers. Additionally, a reduction in GFAP- and IBA-1-positive cells in the prefrontal cortex was observed in male offspring of obese dams, which was reversed by CBD. These findings suggest that maternal obesity promotes a pro-apoptotic and inflammatory brain environment, and CBD may counteract these effects via modulation of glial activity and apoptotic pathways.
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