中文摘要：

细胞外的嘌呤核苷酸和嘧啶核苷酸作用于P2受体产生生物学效应，P2受体分为P2X和P2Y受体。分子和功能学实验研究表明，骨骼系统的成骨细胞、破骨细胞和软骨细胞有P2X和P2Y受体各种亚型表达。ATP和其他核苷酸释放到骨微环境，与P2受体结合调节骨和软骨的形成和活化，包括生长、发育、重建和修复等各方面的生物学功能。炎症条件下，核苷酸释放增加，刺激破骨细胞的活化和形成。异常的骨重塑可以产生不同的骨骼疾病。P2受体在炎症性骨疾病中起重要作用。

英文摘要：

Extracellular purine and pyrimidine nucleotides produce the biologic effects involved in activating P2 receptors. P2 receptors are divided P2X and P2Y receptor subtypes. There is molecular and functional evidence for widespread expression of P2X and P2Y receptor subtypes in osteoblasts, osteoclasts and cartilage cells of the skeletal system. Working through P2 receptors, ATP and other nucleotides released into the bone microenvironment regulate formation and activity of bone and cartilage,including development, growth, turnover and repair of biological functions. The release of nucleotides is increased under inflammatory conditions, and localized ATP release could stimulate formation and activation of osteoclasts. Abnormalities of bone remodelling can produce a variety of skeletal disorders. P2 receptors play an important role in the inflammatory disease of bone.