Advances in imaging examination of bone density and bone quality.

Bone mineral density is the primary basis for the diagnosis of osteoporosis. Bone mineral density measurement methods include dual-energy X-ray (DXA) and quantitative computed tomography (QCT). Based on traditional bone density detection equipment, the newly developed imaging detection technology can further detect the microstructures and geometric features of bones, providing important reference for exploring the pathophysiological changes, sensitive clinical diagnosis, and disease monitoring of osteoporosis.

Research progress of periostin and osteoporosis.

Periostin, as a unique extracellular matrix, is mainly produced during ontogeny and in adult connective tissues that bear mechanical loads, such as heart valves, skin, periodontal ligaments, tendons, and bones. By binding to the integrin on the cell surface and activating Wnt/β-catenin, NF-κB, Fak and other signaling pathways, it regulates the tissues positively or negatively, and also has different effects on the occurrence and development of various diseases. Periostin is an important factor, which can promote cell proliferation, stimulate tissue repair and maintain the integrity of the structure and function of connective tissue.