Neuropharmacology of Prefrontal Cortex Dysfunction

The prefrontal cortex (PFC) is central to higher cognitive functions such as working memory, decision‐making and behavioural flexibility. Dysfunction of PFC circuits underlies core deficits in psychiatric disorders including schizophrenia, depression and stress‐related conditions. Neuropharmacological research has revealed that precise modulation of neurotransmitter systems and microcircuit components can restore or compensate for disrupted prefrontal activity. Key elements include the balance between excitatory glutamatergic transmission and inhibitory GABAergic control, the integrity of interneuron subtypes—especially parvalbumin‐expressing cells—and the interplay between neurons and glia. Advances in pharmacology, chemogenetic tools and circuit‐level analyses have illuminated mechanisms by which stress, inflammation and chronic antipsychotic exposure perturb PFC function, and have identified promising molecular targets for novel interventions.

Research from Nature Portfolio

Foundational work has demonstrated that parvalbumin‐positive interneurons within the PFC are essential for working memory and cognitive flexibility. By using cell‐type‐specific inhibition of these fast‐spiking interneurons in mice, researchers showed that selective disruption of GABAergic control impairs rule shifting and mnemonic processes without inducing sensorimotor or affective symptoms. These experiments establish that parvalbumin interneurons are pivotal circuit elements whose modulation can selectively impact discrete cognitive domains. This seminal finding underpins current efforts to develop pharmacological or neuromodulatory strategies aimed at restoring interneuron function in PFC‐related disorders.

Neuropharmacology of Prefrontal Cortex Dysfunction publication trend

The graph below shows the total number of articles in neuropharmacology of prefrontal cortex dysfunction across all publications each year (not limited to Nature Index journals).

Technical terms

Parvalbumin interneurons: Fast‐spiking GABAergic cells that synchronise pyramidal neuron activity and support cortical rhythms.

Excitation–inhibition (E/I) balance: The dynamic interplay between excitatory glutamate signalling and inhibitory GABAergic control essential for stable circuit function.

Prelimbic cortex: A subdivision of the medial PFC in rodents, homologous to aspects of dorsolateral PFC in primates, involved in cognitive flexibility and goal‐directed behaviour.

Chemogenetics: A technique using engineered receptors activated by designer drugs to modulate specific neuronal populations in vivo.

Nuclear GAPDH cascade: A stress‐responsive pathway in microglia involving translocation of glyceraldehyde‐3‐phosphate dehydrogenase to the nucleus, initiating inflammatory signalling that impacts neuronal receptors.

References

1. Parvalbumin-positive interneurons of the prefrontal cortex support working memory and cognitive flexibility. Scientific Reports (2015).
2. Nuclear GAPDH in cortical microglia mediates cellular stress-induced cognitive inflexibility. Molecular Psychiatry (2024).
3. Activation of prefrontal parvalbumin interneurons ameliorates working memory deficit even under clinically comparable antipsychotic treatment in a mouse model of schizophrenia. Neuropsychopharmacology (2023).
4. Parvalbumin interneuron deficits in schizophrenia. European Neuropsychopharmacology (2024).