TNALP associated calcium phosphate microdeposition contributes to thoracic aortic dissection susceptibility.

Calcium phosphate microdeposition linked to increased aortic dissection risk, driven by tissue nonspecific alkaline phosphatase activity in mice and humans.

• Why it matters: Understanding the mechanisms behind aortic wall instability is crucial for preventing life-threatening dissections, yet the role of vascular calcification remains unclear.
• What they did: Researchers examined human and mouse aortas, finding elevated mineralization and alkaline phosphatase activity associated with dissection, and tested interventions to reduce enzyme activity.
• The result: Reducing tissue nonspecific alkaline phosphatase activity decreased calcium phosphate deposits, medial degeneration, and dissection, highlighting a potential target for therapy.