| First Author | Mignemi NA | Year | 2017 |
| Journal | J Bone Miner Res | Volume | 32 |
| Issue | 2 | Pages | 294-308 |
| PubMed ID | 27530373 | Mgi Jnum | J:328087 |
| Mgi Id | MGI:6754491 | Doi | 10.1002/jbmr.2973 |
| Citation | Mignemi NA, et al. (2017) Plasmin Prevents Dystrophic Calcification After Muscle Injury. J Bone Miner Res 32(2):294-308 |
| abstractText | Extensive or persistent calcium phosphate deposition within soft tissues after severe traumatic injury or major orthopedic surgery can result in pain and loss of joint function. The pathophysiology of soft tissue calcification, including dystrophic calcification and heterotopic ossification (HO), is poorly understood; consequently, current treatments are suboptimal. Here, we show that plasmin protease activity prevents dystrophic calcification within injured skeletal muscle independent of its canonical fibrinolytic function. After muscle injury, dystrophic calcifications either can be resorbed during the process of tissue healing, persist, or become organized into mature bone (HO). Without sufficient plasmin activity, dystrophic calcifications persist after muscle injury and are sufficient to induce HO. Downregulating the primary inhibitor of plasmin (alpha2-antiplasmin) or treating with pyrophosphate analogues prevents dystrophic calcification and subsequent HO in vivo. Because plasmin also supports bone homeostasis and fracture repair, increasing plasmin activity represents the first pharmacologic strategy to prevent soft tissue calcification without adversely affecting systemic bone physiology or concurrent muscle and bone regeneration. (c) 2016 American Society for Bone and Mineral Research. |
