* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Sunday, August 10, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    ‘Paying homage to Kansas’: Singer-songwriter Dallas Pryor shares music journey – The Topeka Capital-Journal

    Honoring Kansas: Singer-Songwriter Dallas Pryor Shares His Inspiring Musical Journey

    Alabama expands entertainment incentives to boost state’s music and creative industries – Made in Alabama

    Alabama Supercharges Entertainment Incentives to Spark Explosive Growth in Music and Creative Industries

    Peacock’s Biggest Action Show Streams 2 New Episodes Sooner Than You Think – yahoo.com

    Peacock’s Hottest Action Show Drops 2 New Episodes Sooner Than Expected!

    Themed Entertainment Design – Purdue Polytechnic

    Innovative Themed Entertainment Design: Creating Immersive Experiences

    Rachael Leigh Cook and Brandon Routh ‘Happy to Have Found Each Other’ Following Respective Divorces – yahoo.com

    Rachael Leigh Cook and Brandon Routh ‘Happy to Have Found Each Other’ Following Respective Divorces – yahoo.com

    ‘Billie Jean’ – Hyde Park Herald

    The Enduring Magic Behind ‘Billie Jean’ Revealed

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Preparing Students for the Technology of Tomorrow – Drug Topics

    Preparing Students Today to Thrive in Tomorrow’s Tech-Driven World

    Technology, History, and Summer Camp at the Rhode Island Computer Museum – abc6.com

    Discover Technology, History, and Summer Camp Adventures at the Rhode Island Computer Museum

    MBU showcases student work at Occupational Therapy Technology Fair – WHSV

    Discover the Most Innovative Student Projects at the Occupational Therapy Technology Fair

    BlackSky Technology Inc. (BKSY) Reports Q2 Loss, Lags Revenue Estimates – Yahoo Finance

    BlackSky Technology Inc. Reports Q2 Loss, Misses Revenue Targets

    Improved Technology Access: A Key to Closing the Healthcare Gap for African Americans – BIOENGINEER.ORG

    LMI Expands Technology Org, Appoints New Leaders – GovCon Wire

    LMI Expands Technology Team with Dynamic New Leadership Appointments

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    ‘Paying homage to Kansas’: Singer-songwriter Dallas Pryor shares music journey – The Topeka Capital-Journal

    Honoring Kansas: Singer-Songwriter Dallas Pryor Shares His Inspiring Musical Journey

    Alabama expands entertainment incentives to boost state’s music and creative industries – Made in Alabama

    Alabama Supercharges Entertainment Incentives to Spark Explosive Growth in Music and Creative Industries

    Peacock’s Biggest Action Show Streams 2 New Episodes Sooner Than You Think – yahoo.com

    Peacock’s Hottest Action Show Drops 2 New Episodes Sooner Than Expected!

    Themed Entertainment Design – Purdue Polytechnic

    Innovative Themed Entertainment Design: Creating Immersive Experiences

    Rachael Leigh Cook and Brandon Routh ‘Happy to Have Found Each Other’ Following Respective Divorces – yahoo.com

    Rachael Leigh Cook and Brandon Routh ‘Happy to Have Found Each Other’ Following Respective Divorces – yahoo.com

    ‘Billie Jean’ – Hyde Park Herald

    The Enduring Magic Behind ‘Billie Jean’ Revealed

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Preparing Students for the Technology of Tomorrow – Drug Topics

    Preparing Students Today to Thrive in Tomorrow’s Tech-Driven World

    Technology, History, and Summer Camp at the Rhode Island Computer Museum – abc6.com

    Discover Technology, History, and Summer Camp Adventures at the Rhode Island Computer Museum

    MBU showcases student work at Occupational Therapy Technology Fair – WHSV

    Discover the Most Innovative Student Projects at the Occupational Therapy Technology Fair

    BlackSky Technology Inc. (BKSY) Reports Q2 Loss, Lags Revenue Estimates – Yahoo Finance

    BlackSky Technology Inc. Reports Q2 Loss, Misses Revenue Targets

    Improved Technology Access: A Key to Closing the Healthcare Gap for African Americans – BIOENGINEER.ORG

    LMI Expands Technology Org, Appoints New Leaders – GovCon Wire

    LMI Expands Technology Team with Dynamic New Leadership Appointments

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

Long COVID Leaves Clues in the Blood

October 12, 2023
in Science
Long COVID Leaves Clues in the Blood
Share on FacebookShare on Twitter

More than three years after the COVID-19 pandemic began, more than three-quarters of adults in the United States, approximately 260 million people, have contracted the infectious disease. While most recover within a few weeks, approximately one out of every 10 people develops long COVID. Dozens of symptoms are associated with this mysterious condition, some of which include fatigue, breathlessness, joint or muscle pains, chest pain, irregular heart beat, kidney pain, tinnitus, nausea, shaking in the hands, depression, and “brain fog.”

What causes long COVID is still vigorously debated. Researchers have proposed a few possibilities, including reservoirs of SARS-CoV-2 particles that persist in patients’ bodies, abnormal immune responses to an acute infection, and blood-vessel damage.

The viral genome lies dormant in a person’s blood cells.

But recent research published in Nature identified certain biomarkers related to immune and endocrine system function detectable in the blood that may help us understand what causes long COVID, as well as how to diagnose and potentially even treat it. “The ability to find distinguishing biomarkers is a big deal,” says Alexandra (Sasha) Tabachnikova, a Ph.D. student in immunobiology at Yale School of Medicine who is a co-author on the study.

The researchers analyzed data from 268 participants, comparing patients who had suffered four months or more of long COVID symptoms, with a group who had never had COVID at all, but had been vaccinated, and another group who had fully recovered from COVID. They took blood samples from all participants, and analyzed these samples to measure which kinds of immune cells were most active. They also exposed study participants’ blood samples to a variety of viral proteins, such as SARS-CoV-2 and Epstein-Barr, as well as proteins normally present in human cells, to measure immune response. Once they had identified differences in the patients’ blood, they used machine learning to better understand which ones would best allow them to differentiate between patients with and without long COVID.

Tabachnikova and her colleagues found striking patterns in the blood from patients with long COVID. They detected abnormal activity in immune cells called T-cells, which help fight infection, reactivation of viruses latent in the blood, such as Epstein-Barr, and precipitous declines in cortisol, a hormone that regulates stress. 

Epstein-Barr virus causes mononucleosis and is found in the blood of  95 percent of humans worldwide. After a person is first infected with Epstein-Barr, the virus may stop producing viral particles, but the genome lies dormant in a person’s blood cells. During instances of stress and reduced immune cell function, as when a person contracts COVID, the virus may reactivate and begin proliferating. 

The finding aligns with research showing that people with detectable levels of Epstein-Barr virus at the time of COVID diagnosis are more likely to develop long COVID symptoms like fatigue, mucousy coughs, and memory problems, compared to those without detectable levels of the virus. 

The researchers also found that long COVID patients had higher levels of IL-8 and galectin-1, proteins involved in regulating inflammation, as well as much lower levels of cortisol. Decreases in cortisol levels are also associated with chronic fatigue syndrome, which could explain why some of the symptoms long COVID sufferers experience are similar to those found in chronic fatigue syndrome, says Tabachinkova.

Based on the biomarkers they identified, the researchers designed a machine learning algorithm that was able to differentiate between people with and without long COVID in their study population with 96 percent accuracy. While the study population was small, the research paints a clearer picture of an enigmatic condition. Appreciating the biological mechanisms involved is another step closer to developing effective treatments.

Michael Denham

Posted on October 11, 2023

Michael Denham is a medical student at the Columbia University Vagelos College of Physicians and Surgeons. He can be found @MichaelWDenham.

new_letter

Get the Nautilus newsletter

Cutting-edge science, unraveled by the very brightest living thinkers.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Nautilus – https://nautil.us/long-covid-leaves-clues-in-the-blood-413943/

Tags: COVIDleavesscience
Previous Post

A Mission to the Asteroid Psyche Is Her Dream Journey

Next Post

EV Battery Glut Drives Prices Down to $70-75 Per kWh

As AI “Besties” rise, can we hold on to what makes us human? – Psychology Today

As AI “Besties” Become Our New Norm, Can We Still Preserve What Makes Us Truly Human?

August 9, 2025
US Economic Growth Shows Cracks – Real Investment Advice

US Economic Growth Confronts Fresh Challenges on the Horizon

August 9, 2025
‘Paying homage to Kansas’: Singer-songwriter Dallas Pryor shares music journey – The Topeka Capital-Journal

Honoring Kansas: Singer-Songwriter Dallas Pryor Shares His Inspiring Musical Journey

August 9, 2025
Excessive screen time among youth may pose heart health risks – www.heart.org

Too Much Screen Time in Youth Could Harm Heart Health

August 9, 2025
The Almanac of American Politics on Maryland’s shifting challenges, faces and power bases – Maryland Matters

Maryland’s Shifting Challenges, Influential Faces, and Emerging Power Centers: An In-Depth Exploration

August 9, 2025
Brazil’s environment minister Marina Silva says President Luis Inacio Lula da Silva’s objective is to ensure that ‘the economy does not compete with ecology, but rather they are part of the same equation’ – IslanderNews.com

Brazil’s Environment Minister: President Lula’s Bold Vision to Unite Economy and Ecology for a Sustainable Future

August 9, 2025
Bye bye, bifocals? New eye drops can fix farsightedness – Popular Science

Say Goodbye to Bifocals: Revolutionary Eye Drops Promise a Cure for Farsightedness

August 9, 2025

Sweet 16 Celebration: USU’s Science Unwrapped Launches an Exciting New Chapter on September 19

August 9, 2025
Capricorn Daily Horoscope Today (Dec 22-Jan19), August 9, 2025: Lifestyle will be refined! – India Today

Embrace Elegance and Insight: Your Capricorn Horoscope for August 9, 2025

August 9, 2025
Preparing Students for the Technology of Tomorrow – Drug Topics

Preparing Students Today to Thrive in Tomorrow’s Tech-Driven World

August 9, 2025

Categories

Archives

August 2025
MTWTFSS
 123
45678910
11121314151617
18192021222324
25262728293031
« Jul    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (762)
  • Economy (785)
  • Entertainment (21,662)
  • General (16,374)
  • Health (9,825)
  • Lifestyle (795)
  • News (22,149)
  • People (786)
  • Politics (795)
  • Science (15,998)
  • Sports (21,282)
  • Technology (15,765)
  • World (768)

Recent News

As AI “Besties” rise, can we hold on to what makes us human? – Psychology Today

As AI “Besties” Become Our New Norm, Can We Still Preserve What Makes Us Truly Human?

August 9, 2025
US Economic Growth Shows Cracks – Real Investment Advice

US Economic Growth Confronts Fresh Challenges on the Horizon

August 9, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version