SARS-COV-2 causes significant abnormalities in the fibrinolysis system of patients: correlation between viral mutations, variants and thrombosis
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.Specific SARS-CoV-2 mutations correlate with severe COVID-19 outcomes and thrombosis risk. Understanding these genetic links is crucial for managing coagulopathy and improving patient care during the pandemic.
Area Of Science
- Virology
- Hematology
- Genetics
Background
- Coronavirus disease (COVID-19) is a complex, multi-system disorder associated with coagulopathy and mortality.
- Investigating the link between SARS-CoV-2 genetic variations and coagulation system changes is vital for understanding disease severity.
Purpose Of The Study
- To investigate the correlation between SARS-CoV-2 mutations in blood samples and changes in the fibrinolysis system.
- To assess the relationship between these mutations, disease severity, and intensive care unit (ICU) admission.
Main Methods
- Recruited 446 COVID-19 patients between 2021-2022.
- Performed sequence analysis of the SARS-CoV-2 spike gene from blood samples.
- Measured fibrinolysis and coagulation parameters including D-dimer, fibrinogen, tPA, and PAI-1.
Main Results
- SARS-CoV-2 RNA detected in 27.6% of blood samples.
- Specific mutations (N501Y, D614G, K417N, P681R) linked to increased ICU admissions.
- Omicron (BA.1.1) variant associated with thrombosis in unvaccinated, comorbid patients.
- N501Y mutation correlated with elevated tPA, aPTT, and D-dimer levels.
Conclusions
- Thrombosis is a prevalent complication in severe COVID-19.
- Further research is needed to understand the link between SARS-CoV-2 variants and thrombosis development.
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
Related Concept Videos
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
Viral Recombination Can Create New Diseases
Some diseases can infect multiple species. For example, pigs can be infected by some human and...
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.