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All Publications

  • Internal state configures olfactory behavior and early sensory processing in Drosophila larvae SCIENCE ADVANCES Vogt, K., Zimmerman, D. M., Schlichting, M., Hernandez-Nunez, L., Qin, S., Malacon, K., Rosbash, M., Pehlevan, C., Cardona, A., Samuel, A. T. 2021; 7 (1)
  • Sex differences in microglia as a risk factor for Alzheimer's disease Sex and Gender Differences in Alzheimer's disease Delage , C., Rendina , D. N., Malacon , K. E., Tremblay , M., Bilbo , S. D. Elsevier Inc.. 2021; 1: 79-104
  • First reported use of real-time intraoperative computed tomography angiography image registration using the Machine-vision Image Guided Surgery system: illustrative case Journal of Neurosurgery: Case Lessons Wadhwa, H., Malacon, K., Medress, Z. A., Leung , C., Sklar, M., Zygourakis , C. C. 2021; 1 (18): 5

    View details for DOI 10.3171/CASE2125

  • Neonatal immune challenge induces female-specific changes in social behavior and somatostatin cell number BRAIN BEHAVIOR AND IMMUNITY Smith, C. J., Kingsbury, M. A., Dziabis, J. E., Hanamsagar, R., Malacon, K. E., Tran, J. N., Norris, H. A., Gulino, M., Bordt, E. A., Bilbo, S. D. 2020; 90: 332?45


    Decreases in social behavior are a hallmark aspect of acute "sickness behavior" in response to infection. However, immune insults that occur during the perinatal period may have long-lasting consequences for adult social behavior by impacting the developmental organization of underlying neural circuits. Microglia, the resident immune cells of the central nervous system, are sensitive to immune stimulation and play a critical role in the developmental sculpting of neural circuits, making them likely mediators of this process. Here, we investigated the impact of a postnatal day (PND) 4 lipopolysaccharide (LPS) challenge on social behavior in adult mice. Somewhat surprisingly, neonatal LPS treatment decreased sociability in adult female, but not male mice. LPS-treated females also displayed reduced social interaction and social memory in a social discrimination task as compared to saline-treated females. Somatostatin (SST) interneurons within the anterior cingulate cortex (ACC) have recently been suggested to modulate a variety of social behaviors. Interestingly, the female-specific changes in social behavior observed here were accompanied by an increase in SST interneuron number in the ACC. Finally, these changes in social behavior and SST cell number do not appear to depend on microglial inflammatory signaling, because microglia-specific genetic knock-down of myeloid differentiation response protein 88 (MyD88; the removal of which prevents LPS from increasing proinflammatory cytokines such as TNF? and IL-1?) did not prevent these LPS-induced changes. This study provides novel evidence for enduring effects of neonatal immune activation on social behavior and SST interneurons in females, largely independent of microglial inflammatory signaling.

    View details for DOI 10.1016/j.bbi.2020.08.013

    View details for Web of Science ID 000577976900031

    View details for PubMedID 32860938

    View details for PubMedCentralID PMC7556772

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