Dataset Information

‘The long tail of Covid 19’ - The detection of a prolonged inflammatory response after a SARS-CoV-2 infection in asymptomatic and mildly affected patients

ABSTRACT: ‘Long Covid’ or medical complications associated with a post SARS Covid 2 infection, are a significant post-viral complication that is being more and more commonly reported in patients. Therefore, there is an increasing need to understand the disease mechanisms, identify drug targets and inflammatory processes associated with a Sars-CoV-2 infection. To address this need, we created a targeted mass spectrometry based multiplexed panel of 96 immune response associated proteins. We applied the multiplex assay to a cohort of serum samples from asymptomatic and moderately affected patients. All patients had tested positive for a Sars-CoV-2 infection by PCR and were determined to be subsequently positive for antibodies. Even 40-60 days post-viral infection, we observed a significant remaining inflammatory response in all patients. Proteins that were still affected were associated with the anti-inflammatory response and mitochondrial stress. This indicates that biochemical and inflammatory pathways within the body can remain perturbed long after SARS-CoV2 infections have subsided even in asymptomatic and moderately affected patients.

ORGANISM(S): Homo Sapiens

SUBMITTER: Wendy Heywood

PROVIDER: PXD022159 | panorama | Thu Jan 21 00:00:00 GMT 2021

REPOSITORIES: PanoramaPublic

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'The long tail of Covid-19' - The detection of a prolonged inflammatory response after a SARS-CoV-2 infection in asymptomatic and mildly affected patients.

Doykov Ivan I Hällqvist Jenny J Gilmour Kimberly C KC Grandjean Louis L Mills Kevin K Heywood Wendy E WE

F1000Research 20201119

'Long Covid', or medical complications associated with post SARS-CoV-2 infection, is a significant post-viral complication that is being more and more commonly reported in patients. Therefore, there is an increasing need to understand the disease mechanisms, identify drug targets and inflammatory processes associated with a SARS-CoV-2 infection. To address this need, we created a targeted mass spectrometry based multiplexed panel of 96 immune response associated proteins. We applied the multiple ...[more]

PMID: 33391730

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Project description:Background: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has provoked, up to date, more than 5 million deaths worldwide. While asymptomatic individuals are responsible of many potential transmissions, the difficulty to identify and isolate them at the high peak of infection constitutes still a real challenge in the actual pandemic. Moreover, apart from the effect over the respiratory system, SARS-CoV-2 provokes severe vascular damage and thromboembolic events in critical COVID-19 patients, deriving in many related deaths and long-hauler symptoms. Understanding how these processes are triggered in response to the virus as well as the potential sequelae at the long term, even in asymptomatic donors, becomes essential. Methods: We have evaluated, by application of a proteomics-based quantitative approach, the effect of serum of COVID-19 asymptomatic individuals over circulating angiogenic cells (CACs). Thus, healthy CACs were incubated ex-vivo with the serum of either COVID-19 negative (PCR-/IgG-, n:8) or COVID-19 positive asymptomatic donors, at different infective stages: PCR+/ IgG- (n:8) and PCR-/IgG+ (n:8). Also, a label free quantitative approach was applied to identify and quantify protein differences between these serums. Results: Our results confirmed that SARS-CoV-2 promotes changes at the protein level in the serum of infected asymptomatic individuals, mainly correlated with altered coagulation and inflammatory processes (Fibrinogen, Von Willebrand Factor, Thrombospondin-1). At the cellular level, proteins like ICAM-1, TLR2 or Ezrin/Radixin were only up-regulated in CACs treated with the serum of asymptomatic patients at the highest peak of infection (PCR+/IgG-), but not with the serum of PCR-/IgG+ individuals. Many of these proteins correlate with the initial response of the endothelium against the virus. Conclusions: The incubation ex vivo of CACs with the serum of asymptomatic COVID-19 donors at different stages of infection promoted protein changes representative of the endothelial dysfunction and inflammatory response that occur after viral infection, together with activation of the coagulation process. The current approach constitutes an optimal model to study the response of vascular cells to SARS-CoV-2 infection, as well as an alternative to test potential inhibitors targeting either the virus entry pathway or molecules involved in the immune responses following SARS-CoV-2 infection.

Dataset Information

‘The long tail of Covid 19’ - The detection of a prolonged inflammatory response after a SARS-CoV-2 infection in asymptomatic and mildly affected patients

Publications

'The long tail of Covid-19' - The detection of a prolonged inflammatory response after a SARS-CoV-2 infection in asymptomatic and mildly affected patients.

Similar Datasets

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