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Reactive oxygen species-related oxidative changes are associated with splenic lymphocyte depletion in Ebola virus infection

  1. Author:
    Mani, Venkatesh
    Chu, Winston T
    Yang, Hee-Jeong
    Morris, C Paul
    Laux, Joseph
    Byrum, Russell
    Cooper, Kurt
    Liu, David X
    Wang, Hui
    Johnson, Cristal
    Hadley, Kyra
    Bernbaum, John G
    Hart, Randy
    Anthony, Scott M
    Marketon, Anthony E
    Bernbaum-Cutler, Rebecca
    Pahar, Bapi
    Worwa, Gabriella
    Kuhn, Jens H
    Crozier,Ian
    Calcagno, Claudia
    Gale, Eric

  2. Author Address

    Integrated Research Facility at Fort Detrick, Division of Clinical Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Fort Detrick, Frederick, MD USA., Clinical Monitoring Research Program Directorate, Frederick National Laboratory for Cancer Research, Frederick, MD USA., Athinoula A. Martinos Center for Biomedical Imaging, The Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA USA., Harvard Medical School, Boston, MA USA.,
    1. Year: 2025
    2. Epub Date: 2025 04 24
  2. Journal: Npj Imaging
    1. 3
    2. 1
    3. Pages: 16
  4. Type of Article: Article
  5. Article Number: 16
  1. Abstract:

    The dysregulated production of reactive oxygen species (ROS) during viral infections may lead to immune cell death and ineffective host responses. ROS dynamics have been under-investigated in severe Ebola virus disease (EVD), a condition in which hyperinflammation and excessive immune cell death are well described but poorly understood. Through ex vivo immunohistochemistry and in vivo ROS-sensitive magnetic resonance imaging (MRI) we demonstrate significant ROS-related oxidative changes in the spleens of domestic ferrets exposed to Ebola virus (EBOV). By immunohistochemistry or MRI, detection of splenic ROS was inversely correlated with the number of CD4+/CD8+ T lymphocytes and apoptotic CD8+ lymphocytes, but detection was positively correlated with the frequency of apoptotic CD4+ cells and the number and frequency of apoptotic B lymphocytes. These results suggest that ROS-induced apoptosis may contribute to the loss of splenic CD4+ T lymphocytes in EBOV-exposed ferrets and warrant further investigation of the role of ROS in severe EVD. © The Author(s) 2025.

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  2. DOI: 10.1038/s44303-025-00079-x
  3. PMID: 40291761
  4. PMCID: PMC12021656
  5. PII : 79

Library Notes

  1. Fiscal Year: FY2024-2025
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