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To clarify the role of cyclooxygenase-2 (COX-2) in acute recovery of trabecular bone in reloaded hindlimbs of tail-suspended mice, we administered a COX-2 selective inhibitor in the mice during the reloading period after unloading. Experiments were conducted on 140 male C57BL/6J mice (8 weeks old). They were divided into ground control (GC) and unloading by tail suspension (UL) groups. On day 7, Group...
Prostaglandin E 2 (PGE 2 ) is essential for fracture healing. Systemic administration of EP4 ligands such as PGE 2 and other synthetic EP4 agonists appears to transduce anabolic signals by binding to receptor EP4. Therefore, the present study was designed to test whether administration of EP4 agonist accelerates the healing of drill-hole injury in the femoral diaphysis. After...
In this study, we investigated the expression of vascular endothelial growth factor (VEGF) mRNA along with its receptors in the healing process following rat femoral drill-hole injury. The cellular events involved in the differential expression of VEGF were studied by reverse transcription-polymerase chain reaction, immunocytochemistry, and in situ hybridization. Abundant alkaline phosphatase-positive...
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