Academic Journal
Thalamofrontal synaptic weakening underlies short-term memory deficits from adolescent NMDAR hypofunction.
| Τίτλος: | Thalamofrontal synaptic weakening underlies short-term memory deficits from adolescent NMDAR hypofunction. |
|---|---|
| Συγγραφείς: | Yu J; Sensory and Motor Systems Research Group, Korea Brain Research Institute (KBRI), Daegu, Republic of Korea.; Department of Brain Sciences, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Daegu, Republic of Korea., Choi IS; Sensory and Motor Systems Research Group, Korea Brain Research Institute (KBRI), Daegu, Republic of Korea., Kim GH; Neural Circuits Research Group, KBRI, Daegu, Republic of Korea., Bahn S; Cognitive Science Group, KBRI, Daegu, Republic of Korea., Kim J; Department of Electrical Engineering and Computer Science, DGIST, Daegu, Republic of Korea., Bae S; Sensory and Motor Systems Research Group, Korea Brain Research Institute (KBRI), Daegu, Republic of Korea.; Department of Pharmacology, College of Medicine, Yonsei University, Seoul, Republic of Korea., Lee T; Brain Research Core Facility, KBRI, Daegu, Republic of Korea., Choi JH; Sensory and Motor Systems Research Group, Korea Brain Research Institute (KBRI), Daegu, Republic of Korea., Kwon JS; Department of Psychiatry, Hanyang University Hospital, Seoul, Republic of Korea.; Institute of Human Behavioral Medicine, Seoul National University (SNU) Medical Research Center, Seoul, Republic of Korea., Kim M; Institute of Human Behavioral Medicine, Seoul National University (SNU) Medical Research Center, Seoul, Republic of Korea.; Department of Psychiatry, SNU College of Medicine, Seoul, Republic of Korea.; Department of Neuropsychiatry, SNU Hospital, Seoul, Republic of Korea., Choi JW; Department of Electrical Engineering and Computer Science, DGIST, Daegu, Republic of Korea.; Brain Engineering Convergence Research Center, DGIST, Daegu, Republic of Korea.; Biomedical Science and Engineering, DGIST, Daegu, Republic of Korea., Lee KJ; Neural Circuits Research Group, KBRI, Daegu, Republic of Korea., Rah JC; Sensory and Motor Systems Research Group, Korea Brain Research Institute (KBRI), Daegu, Republic of Korea.; Department of Brain Sciences, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Daegu, Republic of Korea.; Brain Engineering Convergence Research Center, DGIST, Daegu, Republic of Korea.; Biomedical Science and Engineering, DGIST, Daegu, Republic of Korea. |
| Πηγή: | Science advances [Sci Adv] 2026 Sep 25; Vol. 12 (39), pp. eaee2152. Date of Electronic Publication: 2026 Sep 23. |
| Τύπος έκδοσης: | Journal Article |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: American Association for the Advancement of Science Country of Publication: United States NLM ID: 101653440 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2375-2548 (Electronic) Linking ISSN: 23752548 NLM ISO Abbreviation: Sci Adv Subsets: MEDLINE |
| Imprint Name(s): | Original Publication: Washington, DC : American Association for the Advancement of Science, [2015]- |
| Ιατρικοί όροι (MeSH): | Receptors, N-Methyl-D-Aspartate*/metabolism , Receptors, N-Methyl-D-Aspartate*/antagonists & inhibitors , Memory, Short-Term*/drug effects , Memory Disorders*/physiopathology , Memory Disorders*/metabolism , Memory Disorders*/etiology , Synapses*/metabolism , Prefrontal Cortex*/physiopathology , Prefrontal Cortex*/metabolism , Thalamus*/physiopathology , Thalamus*/metabolism, Synaptic Transmission/drug effects ; Ketamine/pharmacology ; Animals ; Mice ; Male |
| Περίληψη: | Thalamofrontal (TF) dysconnectivity is one of the most consistent circuit-level abnormalities reported in patients with schizophrenia and is linked to deficits in short-term memory (STM). However, the biological mechanisms underlying TF weakening remain unclear. Here, we show that repeated adolescent N-methyl-d-aspartate receptor (NMDAR) antagonism produces STM deficits by impairing TF synaptic transmission. In mice repeatedly exposed to ketamine, STM impairment coincided with reduced release probability and attenuated short-term depression at mediodorsal thalamus (MD) → dorsomedial prefrontal cortex (dmPFC) synapses, without detectable changes in corticocortical synaptic release probability, intrinsic excitability, or gross synaptic ultrastructure. These presynaptic deficits were accompanied by diminished direction-selective population coding in the dmPFC and impaired delayed alternation performance. Chemogenetically strengthening MD → dmPFC projections restored both neural selectivity and behavior. These findings identify a projection-specific presynaptic mechanism through which adolescent NMDAR hypofunction weakens TF communication and produces cognitive impairment, offering a biological explanation for clinically observed TF dysconnectivity and establishing TF synapses as a therapeutic target. |
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| Substance Nomenclature: | 0 (Receptors, N-Methyl-D-Aspartate) 690G0D6V8H (Ketamine) |
| Entry Date(s): | Date Created: 20260923 Date Completed: 20260923 Latest Revision: 20260925 |
| Update Code: | 20260925 |
| PubMed Central ID: | PMC13600250 |
| DOI: | 10.1126/sciadv.aee2152 |
| PMID: | 42777060 |
| Βάση Δεδομένων: | MEDLINE |
| ISSN: | 2375-2548 |
|---|---|
| DOI: | 10.1126/sciadv.aee2152 |