Paternal bisphenol a diet changes prefrontal cortex proteome and provokes behavioral dysfunction in male offspring

Area of Science:

• Neuroscience
• Toxicology
• Developmental Biology

Background:

• Paternal environmental exposures are understudied regarding their effects on offspring.
• Bisphenol A (BPA) is a common endocrine disruptor with known effects on development.
• The prefrontal cortex (PFC) is crucial for social and emotional behaviors.

Purpose of the Study:

• To investigate the impact of paternal Bisphenol A diet (PBD) on the developing prefrontal cortex (PFC) of male offspring.
• To identify molecular mechanisms underlying potential behavioral changes in offspring exposed to PBD.

Main Methods:

• Proteomics analysis of the PFC in male juvenile offspring exposed to PBD (50 mg BPA/kg diet).
• Assessment of endoplasmic reticulum (ER) stress markers (BIP, CHOP, BCL-2).
• Evaluation of myelinogenesis genes and myelin basic protein (MBP) expression.

Main Results:

• PBD altered the expression of ER stress markers (BIP, CHOP, BCL-2).
• Downregulation of myelinogenesis genes and MBP suggests myelin deficiency.
• Offspring exhibited increased anxiety-like behavior and impaired social behavior.

Conclusions:

• Paternal BPA exposure induces ER stress and myelin destruction in the offspring's PFC.
• These molecular alterations may underlie the observed behavioral deficits in male offspring.
• Highlights the significance of paternal effects in environmental exposure research.