Paternal inheritance of a vulnerable opioid-taking phenotype in female rats
Hao Chen, Shuangying Leng, Sufiya Khanam, Megan K. Mulligan, Eva E. Redei
This study shows that female rats with paternal WMI lineage exhibit increased oxycodone consumption and accelerated escalation compared to reciprocal offspring, indicating a parent-of-origin effect in addiction vulnerability.
bioRxiv · Jun 18, 2026 · PreprintAnimal Behavior & Cognition