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Neurosci."],"accepted":{"date-parts":[[2025,5,4]]},"published-print":{"date-parts":[[2025,6,18]]},"abstract":"<jats:p>\n                    Neuronal activity in the olfactory bulb (OB) drives coordinated activity in the hippocampal\u2013prefrontal network during early development. Inhibiting OB output in neonatal mice disrupts functional development of the hippocampal formation as well as cognitive abilities. These impairments manifest early in life and resemble dysfunctions of the hippocampus and the prefrontal cortex that have been linked to neuropsychiatric disorders. Thus, we investigated OB activity during early development in a disease mouse model and asked whether activity disruptions might contribute to the dysfunctional development of the hippocampal\u2013prefrontal network. We addressed this question by combining in vivo electrophysiology with behavioral assessment of immune-challenged\n                    <jats:italic>\n                      Disc1\n                      <jats:sup>+\/\u2212<\/jats:sup>\n                    <\/jats:italic>\n                    mice of both sexes that mimic the dual genetic\u2013environmental etiology of neuropsychiatric disorders. In wild-type mice, we found high DISC1 expression levels in OB projection neurons during development. Furthermore, neuronal and network activity in the OB and the drive from the bulb to the hippocampal\u2013prefrontal network were reduced in immune-challenged\n                    <jats:italic>\n                      Disc1\n                      <jats:sup>+\/\u2212<\/jats:sup>\n                    <\/jats:italic>\n                    mice during early development. This early deficit did not affect odor-evoked activity and odor perception but resulted in impaired long-term odor memory. We propose that reduced spontaneous activity in the developing OB might contribute to altered maturation of the hippocampal\u2013prefrontal network, leading to memory impairment in immune-challenged\n                    <jats:italic>\n                      Disc1\n                      <jats:sup>+\/\u2212<\/jats:sup>\n                    <\/jats:italic>\n                    mice.\n                  <\/jats:p>","DOI":"10.1523\/jneurosci.1007-24.2025","type":"journal-article","created":{"date-parts":[[2025,5,30]],"date-time":"2025-05-30T13:50:16Z","timestamp":1748613016000},"page":"e1007242025","source":"Crossref","is-referenced-by-count":6,"title":["Developmental Olfactory Dysfunction and Abnormal Odor Memory in Immune-Challenged\n                    <i>\n                      Disc1\n                      <sup>+\/\u2212<\/sup>\n                    <\/i>\n                    Mice"],"prefix":"10.1523","volume":"45","author":[{"given":"Fiona","family":"Parbst","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9437-4959","authenticated-orcid":false,"given":"Johanna K.","family":"Kostka","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anne","family":"G\u00fcnther","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu-Nan","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ileana L.","family":"Hanganu-Opatz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0736-6251","authenticated-orcid":false,"given":"Sebastian 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