Discrete hippocampal projections are differentially regulated by parvalbumin and somatostatin interneurons.

Autor: Lodge DJ; Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center, San Antonio, TX, 78229, USA.; South Texas Veterans Health Care System, Audie L. Murphy Division, San Antonio, TX, USA., Elam HB; Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center, San Antonio, TX, 78229, USA.; South Texas Veterans Health Care System, Audie L. Murphy Division, San Antonio, TX, USA., Boley AM; Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center, San Antonio, TX, 78229, USA.; South Texas Veterans Health Care System, Audie L. Murphy Division, San Antonio, TX, USA., Donegan JJ; Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center, San Antonio, TX, 78229, USA. jennifer.donegan@austin.utexas.edu.; Department of Psychiatry and Behavioral Sciences and Center for Early Life Adversity, Department of Neuroscience, Dell Medical School at the University of Texas at Austin, Austin, TX, 78712, USA. jennifer.donegan@austin.utexas.edu.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2023 Oct 20; Vol. 14 (1), pp. 6653. Date of Electronic Publication: 2023 Oct 20.
DOI: 10.1038/s41467-023-42484-z
Abstrakt: People with schizophrenia show hyperactivity in the ventral hippocampus (vHipp) and we have previously demonstrated distinct behavioral roles for vHipp cell populations. Here, we test the hypothesis that parvalbumin (PV) and somatostatin (SST) interneurons differentially innervate and regulate hippocampal pyramidal neurons based on their projection target. First, we use eGRASP to show that PV-positive interneurons form a similar number of synaptic connections with pyramidal cells regardless of their projection target while SST-positive interneurons preferentially target nucleus accumbens (NAc) projections. To determine if these anatomical differences result in functional changes, we used in vivo opto-electrophysiology to show that SST cells also preferentially regulate the activity of NAc-projecting cells. These results suggest vHipp interneurons differentially regulate that vHipp neurons that project to the medial prefrontal cortex (mPFC) and NAc. Characterization of these cell populations may provide potential molecular targets for the treatment schizophrenia and other psychiatric disorders associated with vHipp dysfunction.
(© 2023. Springer Nature Limited.)
Databáze: MEDLINE
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