Related Experiment Video
Updated: Aug 12, 2025

Live Imaging and Quantification of Viral Infection in K18 hACE2 Transgenic Mice Using Reporter-Expressing Recombinant SARS-CoV-2
Published on: November 5, 2021
SARS-CoV-2 and its impact on the cardiovascular and digestive systems - The interplay between new virus variants and
Angelika Szpulak1, Urszula Garlak1, Hanna Ćwirko1
1Faculty of Medicine, Wroclaw Medical University, Wybrzeże L. Pasteura 1, 50-367 Wrocław, Poland.
Abstract:
Since infection with the novel coronavirus SARS-CoV-2 first emerged in Wuhan, China, in December 2019, the world has been battling the pandemic COVID-19. Patients of all ages and genders are now becoming infected with the new coronavirus variant (Omicron) worldwide, and its subvariants continue to pose a threat to health and life. This article provides a literature review of cardiovascular and gastrointestinal complications resulting from SARS-CoV-2 infection. COVID-19 primarily caused respiratory symptoms, but complications can affect many vital organs. SARS-CoV-2 binds to a human cell receptor (angiotensin-converting enzyme 2 - ACE2) that is predominantly expressed primarily in the heart and gastrointestinal tract, which is why we focused on complications in these organs. Since the high transmissibility of Omicron and its ability to evade the immune system have raised worldwide concern, we have tried to summarise the current knowledge about its development from a structural point of view and to highlight the differences in its binding to human receptors and proteases compared to previous VOC.
Insights
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant can cause cardiovascular and gastrointestinal issues. This review examines SARS-CoV-2
Area of Science:
- Virology and Immunology
- Cardiovascular Medicine
- Gastroenterology
Background:
- The COVID-19 pandemic, caused by SARS-CoV-2, continues to evolve with new variants like Omicron.
- While primarily respiratory, SARS-CoV-2 infection impacts multiple organs due to its binding to the ACE2 receptor.
- The ACE2 receptor is highly expressed in the heart and gastrointestinal tract, making these organs susceptible to complications.
Purpose of the Study:
- To conduct a literature review on cardiovascular and gastrointestinal complications associated with SARS-CoV-2 infection.
- To summarize current knowledge on the Omicron variant's structural development and receptor binding.
- To compare Omicron's interaction with human receptors and proteases against previous variants of concern (VOCs).
Main Methods:
- Literature review of existing studies on SARS-CoV-2, COVID-19, and its variants.
- Analysis of scientific data regarding the structural characteristics of the Omicron variant.
- Comparative analysis of Omicron's binding affinities to human ACE2 and proteases versus prior VOCs.
Main Results:
- SARS-CoV-2 infection leads to significant cardiovascular and gastrointestinal complications.
- The Omicron variant exhibits high transmissibility and immune evasion capabilities.
- Structural analysis reveals differences in Omicron's binding to human receptors and proteases compared to previous SARS-CoV-2 variants.
Conclusions:
- COVID-19 complications extend beyond respiratory symptoms, affecting the cardiovascular and gastrointestinal systems.
- Understanding the structural and binding characteristics of variants like Omicron is crucial for managing the pandemic.
- Further research is needed to fully elucidate the long-term effects of SARS-CoV-2 on these vital organs.
Related Concept Videos
Viral Recombination
Rous Sarcoma Virus (RSV) and Cancer
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
Single Nucleotide Polymorphisms-SNPs
What is Monogastric Digestion?
Viral Mutations
Psychoneuroimmunology: Cardiovascular Disease
A key area of focus in PNI is the relationship between stress and coronary...

