Increased arterial calcification in Paget's disease of bone

Area of Science:

• Vascular Biology
• Bone Metabolism
• Radiology

Background:

• Paget's disease of bone (PD) is a chronic disorder characterized by abnormal bone remodeling.
• Extraosseous calcification, particularly in arteries, is frequently observed in PD patients.
• The mechanisms of vascular and bone mineralization share similarities, suggesting a potential link.

Purpose of the Study:

• To quantify and compare the prevalence, extent, and type of vascular calcification in patients with PD versus control subjects.
• To investigate whether PD is associated with increased vascular calcification.
• To explore the relationship between bone remodeling and vessel wall calcification in PD.

Main Methods:

• Radiographic assessment of vascular calcification in the aorta, iliac, femoral, gluteal, and pelvic arteries.
• Quantification of calcification number, length, thickness, and type (arteriosclerotic or medial arterial).
• Comparison of calcification parameters between 42 PD patients and 36 control subjects.

Main Results:

• PD patients showed significantly higher rates of arteriosclerotic calcification (52.4% vs 30.6%) and medial arterial calcification (38.6% vs 11.1%) compared to controls (P=0.05 for both).
• Vascular calcifications were significantly longer (1.93 cm vs 0.84 cm) and thicker (1.24 mm vs 0.56 mm) in PD patients than in controls (P=0.04 and P=0.01, respectively).
• A higher frequency of both calcification types was observed in PD patients.

Conclusions:

• Patients with Paget's disease of bone have a higher prevalence and severity of vascular calcification.
• The findings support a probable link between abnormal vessel wall calcification and bone remodeling in Paget's disease.
• The underlying mechanism connecting PD and vascular calcification requires further investigation.