Back

The Prefrontal Cortex to the Hippocampus Glutamatergic Pathway Regulates Reward Effects of Methamphetamine

Zhao, D.; Shi, W.; Li, M.; Xue, R.; Wang, H.; Zhang, L.; Huang, M.; Bai, L.; Gu, R.; Li, Y.; Zhang, X.; Kalivas, P.; Bai, J.

2024-05-21 neuroscience
10.1101/2024.05.20.595065 bioRxiv
Show abstract

Methamphetamine (METH) induces reward effects. The prefrontal cortex (PFC) plays a role in regulating top-down. The hippocampus is closely involved reward memory. However, the direct projects from the PFC to the hippocampus have not been studied well. Here, we use conditioned place preference (CPP), a recombinant adeno-associated virus 2/9 (rAAV2/9) and optogenetic approaches to explore a role in METH-CPP for a novel pathway projecting from the medial prefrontal prelimbic cortex (PrL) directly to the dorsal hippocampus CA1 (dCA1). Expressing CaMKII-ChR2 or CaMKII-eNpHR3.0 in the PrL and optically stimulating in the dCA1 blocks or enhances METH-CPP, respectively. Moreover, silencing the PrL to dCA1 glutamatergic pathway with tetanus neurotoxin (TeNT) enhances METH-CPP. These results identify a novel PrL-to-dCA1 glutamatergic pathway regulating METH-CPP.

Matching journals

The top 7 journals account for 50% of the predicted probability mass.

50% of probability mass above

"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.