Is Sars-Cov2 cytolytic or cytopathic?

  • Thread starter Thread starter mktsgm
  • Start date Start date
  • Tags Tags
    corona covid-19
AI Thread Summary
SARS-CoV-2 causes cellular damage through both cytopathic and cytolytic mechanisms. The virus interacts with ACE2 receptors, leading to oxidative stress, inflammation, and a "cytokine storm," which results in arterial blockage and destruction of alveoli in the lungs, ultimately impairing oxygen uptake and potentially leading to death. While some discussions attempt to classify the damage as either cytopathic or cytolytic, it is acknowledged that both processes occur, complicating the understanding of the virus's impact. The complexity of the virus's effects on cellular function, including the disruption of regulatory proteins like Angiotensin 1,7, highlights the limitations of simplified explanations and the ongoing need for deeper research into the virus's mechanisms.
mktsgm
Messages
151
Reaction score
22
TL;DR Summary
Is the current Covid-19 caused by Sars-cov2 virus is theresult of cytolytic effects or cytopathic effects of the virus?
We know viral infections result in cellular damage while they're replicating in the host cells.. Damage can be cytolytic or cytopathic.

I want to know how Sars-cov2 causes such damage? Is it cytopathic or cytolytic? Do they (viruses) kill the host cells or just damage them?
 
Biology news on Phys.org
Sometimes when you try to classify something it is not helpful. People feel better when they can assign a classification to some phenomenon. But that does not mean it creates a real understanding. I think this applies here.

A short really simplified answer to what is happening involves ACE2 receptors. Then subsequent oxidative stress. This triggers clotting, all in the context inflammation, a "cytokine storm", arterial blockage, and ultimately destruction of alveoli (sacs) in the lungs, all of which then causes the patient to die from lack oxygen uptake.

Actually this description is almost a disservice. Too high level. I've gone through 8 hours of medical lectures to get a partial understanding. To make matters worse, our current understanding not complete.

So in terms of your classification question: both are true. Which is not helpful, IMO.
Cells are killed and burst by the virus takeover of the cell. Bad. Worse: that cell death causes horrible subsequent other cell pathology by preventing regulating proteins from forming - ex., Angiotensin 1,7 is one.
 
Last edited:
Thank you Jim. Clear as crystal. This is what I wanted.
 
Popular article referring to the BA.2 variant: Popular article: (many words, little data) https://www.cnn.com/2022/02/17/health/ba-2-covid-severity/index.html Preprint article referring to the BA.2 variant: Preprint article: (At 52 pages, too many words!) https://www.biorxiv.org/content/10.1101/2022.02.14.480335v1.full.pdf [edited 1hr. after posting: Added preprint Abstract] Cheers, Tom

Similar threads

Replies
5
Views
2K
Replies
1
Views
2K
Replies
4
Views
2K
Replies
1
Views
1K
Replies
74
Views
11K
Replies
2
Views
2K
Back
Top