PMID- 34917616 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211218 IS - 2296-634X (Print) IS - 2296-634X (Electronic) IS - 2296-634X (Linking) VI - 9 DP - 2021 TI - Steroid-Induced Osteonecrosis of the Femoral Head: Novel Insight Into the Roles of Bone Endothelial Cells in Pathogenesis and Treatment. PG - 777697 LID - 10.3389/fcell.2021.777697 [doi] LID - 777697 AB - Steroid-induced osteonecrosis of the femoral head (SONFH) is a disease characterized by the collapse of the femoral head. SONFH occurs due to the overuse of glucocorticoids (GCs) in patients with immune-related diseases. Among various pathogenesis proposed, the mechanism related to impaired blood vessels is gradually becoming the most convincing hypothesis. Bone endothelial cells including bone microvascular endothelial cells (BMECs) and endothelial progenitor cells (EPCs) play a crucial role in the maintenance of vascular homeostasis. Therefore, bone endothelial cells are key regulators in the occurrence and progression of SONFH. Impaired angiogenesis, abnormal apoptosis, thrombosis and fat embolism caused by the dysfunctions of bone endothelial cells are considered to be the pathogenesis of SONFH. In addition, even with high disability rates, SONFH lacks effective therapeutic approach. Icariin (ICA, a flavonoid extracted from Epimedii Herba), pravastatin, and VO-OHpic (a potent inhibitor of PTEN) are candidate reagents to prevent and treat SONFH through improving above pathological processes. However, these reagents are still in the preclinical stage and will not be widely used temporarily. In this case, bone tissue engineering represented by co-transplantation of bone endothelial cells and bone marrow mesenchymal stem cells (BMSCs) may be another feasible therapeutic strategy. CI - Copyright (c) 2021 Huang, Wen, Niu, Lin and Wang. FAU - Huang, Cheng AU - Huang C AD - Department of Orthopedics, China-Japan Friendship Hospital, Beijing, China. FAU - Wen, Zeqin AU - Wen Z AD - Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China. FAU - Niu, Junjie AU - Niu J AD - Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China. FAU - Lin, Subin AU - Lin S AD - Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, China. FAU - Wang, Weiguo AU - Wang W AD - Department of Orthopedics, China-Japan Friendship Hospital, Beijing, China. LA - eng PT - Journal Article PT - Review DEP - 20211130 PL - Switzerland TA - Front Cell Dev Biol JT - Frontiers in cell and developmental biology JID - 101630250 PMC - PMC8670327 OTO - NOTNLM OT - angiogenesis OT - bone endothelial cells OT - bone microvascular endothelial cells OT - bone progenitor cells OT - pathogenesis OT - steroid-induced osteonecrosis of the femoral head OT - treatment COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/12/18 06:00 MHDA- 2021/12/18 06:01 PMCR- 2021/01/01 CRDT- 2021/12/17 06:59 PHST- 2021/09/15 00:00 [received] PHST- 2021/11/16 00:00 [accepted] PHST- 2021/12/17 06:59 [entrez] PHST- 2021/12/18 06:00 [pubmed] PHST- 2021/12/18 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 777697 [pii] AID - 10.3389/fcell.2021.777697 [doi] PST - epublish SO - Front Cell Dev Biol. 2021 Nov 30;9:777697. doi: 10.3389/fcell.2021.777697. eCollection 2021.