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  1. Article ; Online: SARS-CoV-2 promotes microglial synapse elimination in human brain organoids.

    Samudyata / Oliveira, Ana O / Malwade, Susmita / Rufino de Sousa, Nuno / Goparaju, Sravan K / Gracias, Jessica / Orhan, Funda / Steponaviciute, Laura / Schalling, Martin / Sheridan, Steven D / Perlis, Roy H / Rothfuchs, Antonio G / Sellgren, Carl M

    Molecular psychiatry

    2022  Volume 27, Issue 10, Page(s) 3939–3950

    Abstract: Neuropsychiatric manifestations are common in both the acute and post-acute phase of SARS-CoV-2 infection, but the mechanisms of these effects are unknown. In a newly established brain organoid model with innately developing microglia, we demonstrate ... ...

    Abstract Neuropsychiatric manifestations are common in both the acute and post-acute phase of SARS-CoV-2 infection, but the mechanisms of these effects are unknown. In a newly established brain organoid model with innately developing microglia, we demonstrate that SARS-CoV-2 infection initiate neuronal cell death and cause a loss of post-synaptic termini. Despite limited neurotropism and a decelerating viral replication, we observe a threefold increase in microglial engulfment of postsynaptic termini after SARS-CoV-2 exposure. We define the microglial responses to SARS-CoV-2 infection by single cell transcriptomic profiling and observe an upregulation of interferon-responsive genes as well as genes promoting migration and synapse engulfment. To a large extent, SARS-CoV-2 exposed microglia adopt a transcriptomic profile overlapping with neurodegenerative disorders that display an early synapse loss as well as an increased incident risk after a SARS-CoV-2 infection. Our results reveal that brain organoids infected with SARS-CoV-2 display disruption in circuit integrity via microglia-mediated synapse elimination and identifies a potential novel mechanism contributing to cognitive impairments in patients recovering from COVID-19.
    MeSH term(s) Humans ; SARS-CoV-2 ; Organoids ; Microglia ; COVID-19 ; Brain ; Presynaptic Terminals
    Language English
    Publishing date 2022-10-05
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1330655-8
    ISSN 1476-5578 ; 1359-4184
    ISSN (online) 1476-5578
    ISSN 1359-4184
    DOI 10.1038/s41380-022-01786-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Plaque-forming units from air samples: Letter to Editor. Re: Jefferson et al., Indoor Air, 2022.

    Rufino de Sousa, Nuno / Steponaviciute, Laura / Margerie, Lucille / Nissen, Karolina / Kjellin, Midori / Reinius, Björn / Salaneck, Erik / Udekwu, Klas I / Rothfuchs, Antonio Gigliotti

    Indoor air

    2022  Volume 32, Issue 11, Page(s) e13169

    MeSH term(s) Air Pollution, Indoor/analysis ; Air Microbiology ; Air Pollutants/analysis
    Chemical Substances Air Pollutants
    Language English
    Publishing date 2022-11-27
    Publishing country England
    Document type Letter ; Research Support, Non-U.S. Gov't ; Comment
    ZDB-ID 1081722-0
    ISSN 1600-0668 ; 0905-6947
    ISSN (online) 1600-0668
    ISSN 0905-6947
    DOI 10.1111/ina.13169
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Corrigendum. Re: de Sousa, N.R., et al., 2022. Detection and isolation of airborne SARS-CoV-2 in a hospital setting. Indoor air, 32(3), e13023.

    Rufino de Sousa, Nuno / Steponaviciute, Laura / Margerie, Lucille / Nissen, Karolina / Kjellin, Midori / Reinius, Björn / Salaneck, Erik / Udekwu, Klas I / Rothfuchs, Antonio Gigliotti

    Indoor air

    2022  Volume 32, Issue 8, Page(s) e13085

    MeSH term(s) Air Pollution, Indoor ; COVID-19 ; Hospitals ; Humans ; SARS-CoV-2
    Language English
    Publishing date 2022-08-28
    Publishing country England
    Document type Letter ; Published Erratum
    ZDB-ID 1081722-0
    ISSN 1600-0668 ; 0905-6947
    ISSN (online) 1600-0668
    ISSN 0905-6947
    DOI 10.1111/ina.13085
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Detection and isolation of airborne SARS-CoV-2 in a hospital setting.

    Rufino de Sousa, Nuno / Steponaviciute, Laura / Margerie, Lucille / Nissen, Karolina / Kjellin, Midori / Reinius, Björn / Salaneck, Erik / Udekwu, Klas I / Rothfuchs, Antonio Gigliotti

    Indoor air

    2022  Volume 32, Issue 3, Page(s) e13023

    Abstract: Transmission mechanisms for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are incompletely understood. In particular, aerosol transmission remains unclear, with viral detection in air and demonstration of its infection potential being ... ...

    Abstract Transmission mechanisms for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are incompletely understood. In particular, aerosol transmission remains unclear, with viral detection in air and demonstration of its infection potential being actively investigated. To this end, we employed a novel electrostatic collector to sample air from rooms occupied by COVID-19 patients in a major Swedish hospital. Electrostatic air sampling in conjunction with extraction-free, reverse-transcriptase polymerase chain reaction (hid-RT-PCR) enabled detection of SARS-CoV-2 in air from patient rooms (9/22; 41%) and adjoining anterooms (10/22; 45%). Detection with hid-RT-PCR was concomitant with viral RNA presence on the surface of exhaust ventilation channels in patients and anterooms more than 2 m from the COVID-19 patient. Importantly, it was possible to detect active SARS-CoV-2 particles from room air, with a total of 496 plaque-forming units (PFUs) being isolated, establishing the presence of infectious, airborne SARS-CoV-2 in rooms occupied by COVID-19 patients. Our results support circulation of SARS-CoV-2 via aerosols and urge the revision of existing infection control frameworks to include airborne transmission.
    MeSH term(s) Air Pollution, Indoor ; COVID-19 ; Hospitals ; Humans ; RNA, Viral/analysis ; SARS-CoV-2
    Chemical Substances RNA, Viral
    Language English
    Publishing date 2022-03-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 1081722-0
    ISSN 1600-0668 ; 0905-6947
    ISSN (online) 1600-0668
    ISSN 0905-6947
    DOI 10.1111/ina.13023
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: SARS-CoV-2 Neurotropism and Single Cell Responses in Brain Organoids Containing Innately Developing Microglia

    Samudyata / Oliveira, Ana Osorio / Malwade, Susmita / de Sousa, Nuno Rufino / Goparaju, Sravan K / Orhan, Funda / Steponaviciute, Laura / Sheridan, Steven D / Perlis, Roy H / Rothfuchs, Antonio Gigliotti / Sellgren-Majkowitz, Carl

    bioRxiv

    Abstract: Neuropsychiatric manifestations are common in both acute and post-acute phase of SARS-CoV-2 infection, but the mechanism of these effects is unknown. Here, we derive human brain organoids with innately developing microglia to investigate the cellular ... ...

    Abstract Neuropsychiatric manifestations are common in both acute and post-acute phase of SARS-CoV-2 infection, but the mechanism of these effects is unknown. Here, we derive human brain organoids with innately developing microglia to investigate the cellular responses to SARS-CoV-2 infection on a single cell level. We find evidence of limited tropism to SARS-CoV-2 for all major cell types and observe extensive neuronal cell death that also include non-infected cells. Single cell transcriptome profiling reveals distinct responses in microglia and astrocytes that share features with cellular states observed in neurodegenerative diseases, includes upregulation of genes with relevance for synaptic stripping, and suggests altered blood brain barrier integrity. Across all cell types, we observe a global translational shut-down as well as altered carbohydrate metabolism and cellular respiration. Together, our findings provide insights into cellular responses of the resident brain immune cells to SARS-CoV-2 and pinpoint mechanisms that may be of relevance for the neuropathological changes observed in COVID-19 patients.
    Keywords covid19
    Language English
    Publishing date 2021-07-08
    Publisher Cold Spring Harbor Laboratory
    Document type Article ; Online
    DOI 10.1101/2021.07.07.451463
    Database COVID19

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