Osteoarthritis often goes undetected until cartilage damage is advanced, limiting treatment options. A new study shows that molecular changes in subchondral bone occur earlier and can signal disease progression before cartilage loss. Using spatial mass spectrometry imaging and synovial fluid proteomics, researchers identified bone-derived protein signatures beneath intact cartilage that were also detectable in joint fluid. These findings point to promising, less invasive biomarkers for earlier diagnosis and improved monitoring of osteoarthritis progression.

While heart rate variability (HRV) is a standard measure of the autonomic nervous system activity, its real-time monitoring is often compromised by inter-patient variability and data contamination from procedural artifacts. Addressing these challenges, researchers from Fujita Health University developed a computational framework for robust and personalized real-time HRV analysis, adapted for clinical applications. The framework integrates each patient’s HRV indices with a mechanism to manually annotate artifact-prone periods, making the analysis accurate and patient-specific.

Hypertension in the lungs is a relatively rare but very serious disease that is usually fatal within two years if left untreated. Current therapies can slow down its progression, but no cure exists. Research teams from Bochum and Bonn are shedding light on the underlying mechanisms of the disease, and have discovered a previously unrecognized factor in its development: the protein beta arrestin 1. The teams have shown that this protein plays an important role in transporting signaling molecules involved in regulating blood vessel diameter. The researchers report their findings in the journal Proceedings of the National Academy of Sciences (PNAS) from February 9, 2026.

A new study has shown that mindfulness helps patients to relax during an endoscopy, allowing doctors to carry out detailed examinations without the need for sedation or general anaesthesia.

When running a fever during infection, we often feel chills, which prompt us to take action to warm ourselves, such as turning on a heater or adding layers of clothing. Increased body temperature helps inhibit pathogen growth and boosts immune cell activity. Researchers in Japan identified the neural mechanism behind chills and the instinct to increase body temperature during infection.

Circadian clocks play a crucial role in our health and well-being. Scientists are now getting closer to understanding how these clocks operate at their core by solving how these clocks within bacteria are able to precisely control when different genes are turned on and off during the 24-hour cycle.