Study Suggests Early Immune Response Key to Understanding Why Colds Hit Some Harder Than Others
A new study published in Cell Press Blue sheds light on the mystery of why some people develop mild cold symptoms while others suffer from severe illness. Researchers at Yale Medicine have discovered that an early immune response in the body, rather than the virus itself, plays a crucial role in determining the severity of the common cold.
According to senior author Ellen Foxman, it's not just the rhinovirus, the most common cause of colds, that determines the disease outcome. Instead, there appears to be an underlying factor within the human body driving the disease outcome, but the mechanisms behind this are still poorly understood.
To investigate this further, the researchers created miniature, 3D-tissue structures called organoids from human nasal cells, which acted like actual human noses and lungs. They then introduced rhinovirus to these miniature organs in a lab setting and found that the production of interferons, proteins produced by the body to fight infections, played a crucial role in keeping the virus mild.
However, when the interferon response was weakened or inhibited, the virus became more severe and could lead to complications such as asthma attacks, bronchitis, and pneumonia. The researchers still don't know why some people produce sufficient interferons to block rhinovirus while others have a weaker response, which is a question they plan to explore further.
The study's findings also highlight the importance of hand washing in preventing the spread of rhinovirus. While there is no vaccine for the virus, frequent hand hygiene can help reduce the transmission of the cold.
In addition, people who experience symptoms such as shortness of breath, wheezing, or a high fever that lasts for more than three days should seek medical attention, according to the Mayo Clinic. By understanding the underlying mechanisms behind the common cold and taking steps to prevent its spread, researchers hope to develop new treatments and prevention strategies in the future.
A new study published in Cell Press Blue sheds light on the mystery of why some people develop mild cold symptoms while others suffer from severe illness. Researchers at Yale Medicine have discovered that an early immune response in the body, rather than the virus itself, plays a crucial role in determining the severity of the common cold.
According to senior author Ellen Foxman, it's not just the rhinovirus, the most common cause of colds, that determines the disease outcome. Instead, there appears to be an underlying factor within the human body driving the disease outcome, but the mechanisms behind this are still poorly understood.
To investigate this further, the researchers created miniature, 3D-tissue structures called organoids from human nasal cells, which acted like actual human noses and lungs. They then introduced rhinovirus to these miniature organs in a lab setting and found that the production of interferons, proteins produced by the body to fight infections, played a crucial role in keeping the virus mild.
However, when the interferon response was weakened or inhibited, the virus became more severe and could lead to complications such as asthma attacks, bronchitis, and pneumonia. The researchers still don't know why some people produce sufficient interferons to block rhinovirus while others have a weaker response, which is a question they plan to explore further.
The study's findings also highlight the importance of hand washing in preventing the spread of rhinovirus. While there is no vaccine for the virus, frequent hand hygiene can help reduce the transmission of the cold.
In addition, people who experience symptoms such as shortness of breath, wheezing, or a high fever that lasts for more than three days should seek medical attention, according to the Mayo Clinic. By understanding the underlying mechanisms behind the common cold and taking steps to prevent its spread, researchers hope to develop new treatments and prevention strategies in the future.