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Calcification refers to the deposition of calcium-containing crystals either intracellularly or within the extracellular matrix. Physiologic calcification is a normal process occurring during bone and tooth development and growth. In contrast, pathologic calcification occurs in soft tissues that typically do not undergo mineralization, such as blood vessels, cartilage, tendons, and skin. Pathological calcification is significantly associated with tissue impairment and the development of secondary diseases, such as atherosclerosis, osteoarthritis, tendinopathy, and skin ulcers. Aging, a natural process linked to numerous pathologic conditions, is one of the most recognized risk factors for pathological calcification. In this manuscript, we review the current state of knowledge regarding the role of aging in calcification across different tissues. We focus on the mechanisms activated during normal aging, including cellular senescence, decreased pyrophosphate levels, increased secretion of extracellular vesicles, elevated oxidative stress, and higher levels of pro-mineralizing cytokines, all of which can contribute to pathological calcification. Finally, we discuss the available animal models used to study the impact of aging on calcification.
Nasi et al. (Tue,) studied this question.
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