A new scientific discovery is changing how we think about the connection between different parts of the body.
Researchers from the Buck Institute for Research on Aging and the University of California San Francisco have found that a gene linked to Alzheimer’s disease may also harm bones, especially in women. Their findings were published in the journal Advanced Science.
Alzheimer’s disease is widely known for affecting memory and thinking. It is the most common form of dementia and mainly affects older adults. One important risk factor for Alzheimer’s is a gene called APOE4.
People who carry this gene have a higher chance of developing the disease. Scientists have studied this gene for many years, but they are still discovering new ways it affects the body.
Doctors have long noticed that people with Alzheimer’s tend to have more bone fractures. Women with weak bones, a condition known as osteoporosis, are also more likely to develop Alzheimer’s later in life. This raised an important question: could there be a direct biological link between the brain and the skeleton?
To answer this, researchers studied mice that carried human versions of the APOE gene. They compared different types, including APOE2, APOE3, and APOE4. By examining both brain and bone tissues, they were able to see how this gene affects the body in different ways.
The results showed that mice with the APOE4 gene had clear problems in their bones, but these problems were not visible using normal imaging methods. This means that even when bones look healthy on scans, there may still be hidden weaknesses inside.
The key to this discovery lies in special bone cells called osteocytes. These cells act like caretakers of the bone. They maintain tiny channels that help bones stay strong and respond to pressure. When these cells stop working properly, the internal structure of the bone becomes weaker over time.
The study found that APOE4 interferes with the function of these cells. It reduces their ability to repair and maintain the bone’s inner structure.
This leads to a decline in bone quality that cannot be easily detected early on. The effect was much stronger in female mice, which is important because women are more likely to develop both osteoporosis and Alzheimer’s disease.
Another surprising finding was that bones contain proteins that are usually linked to brain conditions. This suggests that bones might provide early signals of changes happening in the brain. In some cases, the changes in bone proteins were even more noticeable than those in the brain.
This research could have important future benefits. If doctors can detect these hidden bone changes early, they may be able to identify people at higher risk of Alzheimer’s disease before symptoms appear. It could also lead to new treatments that focus on protecting bone cells to improve overall health.
However, this study has some limitations. It was conducted in mice, so the results may not fully apply to humans. More research is needed to confirm these findings in people and to develop safe treatments. Scientists also need to better understand how this gene affects different tissues in the body.
Despite these limits, the study provides an important insight. It shows that diseases are not always limited to one organ. A gene known for affecting the brain can also have a hidden impact on bones. This supports a growing idea in science that the body works as a connected system.
In conclusion, this research offers a new way of thinking about Alzheimer’s disease and bone health. It suggests that paying attention to bone changes could help with earlier detection and better care in the future. While more studies are needed, this discovery is an important step forward.
If you care about Alzheimer’s, please read studies about Vitamin D deficiency linked to Alzheimer’s, vascular dementia, and Oral cannabis extract may help reduce Alzheimer’s symptoms.
For more information about brain health, please see recent studies about Vitamin B9 deficiency linked to higher dementia risk, and results showing flavonoid-rich foods could improve survival in Parkinson’s disease.
Source: Buck Institute for Research on Aging.
