Chronic inflammation is a hidden process in the body that can quietly damage health over time. Unlike short-term inflammation, which helps the body heal from injury or infection, chronic inflammation stays active for too long.
This ongoing response can harm tissues and organs and has been linked to serious diseases such as Alzheimer’s disease, Parkinson’s disease, diabetes, and cancer.
Many factors can trigger chronic inflammation. These include aging, long-term stress, poor lifestyle habits, and exposure to harmful substances in the environment. When the immune system remains constantly active, it can begin to damage the body instead of protecting it.
Now, scientists at the University of California, Berkeley, have made an important discovery that may help control this harmful process. Their study, led by Professor Danica Chen and published in the scientific journal Cell Metabolism, identified a key molecular “switch” that can turn inflammation on or off.
The research focused on a part of the immune system called the NLRP3 inflammasome. This is a group of proteins that acts like a sensor inside immune cells. It detects danger signals, such as infections or cell damage, and triggers inflammation to protect the body.
While this response is useful in the short term, problems arise when the NLRP3 inflammasome becomes overactive. When it stays switched on for too long, it can lead to chronic inflammation and contribute to many diseases, including multiple sclerosis, diabetes, cancer, and neurodegenerative conditions.
The researchers discovered that this inflammasome can be switched off through a process called deacetylation. This process is controlled by a protein known as SIRT2. SIRT2 works by removing a small chemical group from the inflammasome, which effectively turns it off and stops unnecessary inflammation.
To better understand how this works, the scientists carried out experiments using mice and immune cells. They found that mice lacking SIRT2 developed more inflammation as they aged.
By the time these mice reached two years of age, they showed higher levels of inflammation and greater insulin resistance, which is an early warning sign of type 2 diabetes and metabolic problems.
In another experiment, the researchers replaced the immune systems of older mice. They used blood stem cells to create immune cells with either an active or inactive form of the NLRP3 inflammasome. The results were striking. Mice with the inactive form showed clear improvements in insulin resistance within just six weeks.
These findings suggest that turning off the NLRP3 inflammasome could not only prevent chronic inflammation but may also reverse some of the damage caused by metabolic diseases. This opens the possibility of developing new treatments that target this molecular switch.
The study also provides insight into why some treatments for diseases like Alzheimer’s may not have worked well in the past. One possible reason is that treatment started too late, after significant damage had already occurred. If inflammation can be controlled earlier, it may be possible to slow or even prevent disease progression.
This discovery highlights the importance of understanding the root causes of disease rather than only treating symptoms. By targeting the underlying mechanisms of chronic inflammation, scientists may be able to develop more effective therapies.
In addition, the research connects with growing evidence that lifestyle factors play a role in inflammation. Diet, stress levels, and environmental exposures can all influence how the immune system behaves. Managing these factors may help reduce inflammation and support long-term health.
Although more research is needed, especially in humans, this study represents a major step forward. It shows that the body has natural ways to control inflammation, and that scientists may be able to harness these mechanisms to treat disease.
The study was published in Cell Metabolism and offers new hope for developing treatments that could help people live healthier lives as they age.
If you care about health, please read studies that vitamin D can help reduce inflammation, and vitamin K could lower your heart disease risk by a third.
For more health information, please see recent studies about new way to halt excessive inflammation, and results showing foods that could cause inflammation.
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