COVID-19 Infection Can Cause Long Term Kidney Damage: Study

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COVID-19 Infection Can Cause Long Term Kidney Damage: Study
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A team of international researchers have shown that SARS-CoV-2, the virus causing COVID-19, infects the kidneys and contributes to tissue scarring, possibly impacting kidney outcomes in the long term.

Kidney fibrosis, or scarring, is a serious long-term consequence that can occur virtually after any injury to the kidney and correlates with kidney function.

The fact that the coronavirus can result in severe damage in the human body is known, and also that the kidneys can get infected.

But what exactly happens in the kidney as a result of the infection, remains elusive until now.

Researchers from the RWTH Uniklinik Aachen, Germany, and the Radboud University Medical Center in The Netherlands, investigated the kidney tissue of COVID-19 patients admitted to the intensive care unit.


The findings, published in the journal Cell Stem Cell, showed scarring of the tissue as compared to ICU patients with a non-COVID-19 lung infection and a control group.

Next, to explore the cause of the kidney damage and to understand whether it is a direct effect of the virus, independent of systemic inflammation, the team cultured mini kidneys in the lab, called organoids.

The kidney organoids are developed from stem cells and contain many different kidney cells, except immune cells.

The kidney organoids were infected with SARS-CoV-2 and the researchers investigated the direct effect of the virus on the kidney cells, independent of potential secondary effects caused by immune cells or other systemic effects.

The researchers found, in line with the COVID-19 patient tissues, scarring of the kidney organoids and accompanying signals that contribute to the scarring process.

"The infected kidney organoids show that the virus directly causes cell damage, independent of the immune system. With this work, we found a piece of the puzzle showing the deleterious effects the virus can have in the body," said researcher Jitske Jansen from Radboud.

"Our work shows kidney scarring in COVID-19 patients, which provides an explanation why the virus might cause kidney functional decline as demonstrated in other studies," added Katharina Reimer from the RWTH.


A previous study led by the University of Washington School of Medicine had shown that COVID virus can directly invade human kidney cells -- specifically the proximal tubules, which are major gatekeepers in the organs' waste-filtering function.

(This story was published from a syndicated feed. Only the headline and picture has been edited by FIT)

(This story was auto-published from a syndicated feed. No part of the story has been edited by The Quint.)

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Topics:  Kidney   Latest news   Tissues 

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