Project description:Seasonal infection rates of individual viruses are influenced by synergistic or inhibitory interactions between coincident viruses. Endemic patterns of SARS-CoV-2 and influenza infection overlap seasonally in the Northern hemisphere and may be similarly influenced. We explored the immunopathologic basis of SARS-CoV-2 and influenza A (H1N1) interactions in Syrian hamsters. H1N1 given 48 hours prior to SARS-CoV-2 profoundly mitigated weight loss and lung pathology compared to SARS-CoV-2 infection alone. This was accompanied by normalization of granulocyte dynamics and accelerated antigen presenting populations in bronchoalveolar lavage and blood. Using nasal transcriptomics, we identified rapid upregulation of innate and antiviral pathways induced by H1N1 by the time of SARS-CoV-2 inoculation in 48 hour dual infected animals. Dual infected animals also experienced significant transient downregulation of mitochondrial and viral replication pathways. By quantitative RT-PCR, we confirmed reduced SARS-CoV-2 viral load and lower cytokine levels throughout disease course in lung of dual infected animals. Our data confirm that H1N1 infection induces rapid and transient gene expression that is associated with mitigation of SARS-CoV-2 pulmonary disease. These protective responses are likely to begin in the upper respiratory tract shortly after infection. On a population level, interaction between these two viruses may influence their relative seasonal infection rates.

2024-02-05 | GSE254516 | GEO

Brd2 inhibitor ABBV-744 inhibits SARS-CoV-2 infection in Syrian Hamsters

Project description:We tested if Brd2 inhibitor ABBV-744 could reduce SARS-CoV-2 infection in Syrian Hamsters. Three days post-infection, the lungs of hamsters were harvested and subjected to RNA-seq. Infected, but untreated, hamsters showed marked up-regulation of a number of genes including ISGs when compared to uninfected controls. In contrast, hamsters treated with ABBV-744 showed a down-regulation of ISG levels, confirming ABBV-744 activity. Thus, Brd2 inhibition can decrease SARS-CoV-2 infection in Syrian Hamsters.

2021-09-02 | GSE182994 | GEO

SARS-CoV-2 Delta Variant Pathogenesis and Host Response in Syrian Hamsters.

Project description: Not available

| S-EPMC8473140 | biostudies-literature

Prior Influenza Infection Mitigates SARS-CoV-2 Disease in Syrian Hamsters.

Project description: Not available

| S-EPMC10891789 | biostudies-literature

Age-Dependent Progression of SARS-CoV-2 Infection in Syrian Hamsters.

Project description: Not available

| S-EPMC7412213 | biostudies-literature

SARS-CoV-2 infection induces inflammatory bone loss in golden Syrian hamsters.

Project description: Not available