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Human Umbilical Cord Mesenchymal Stem Cells Prevent Steroid-Induced Avascular Necrosis of the Femoral Head by Modulating Cellular Autophagy.
Biomedicines
December 2024
Department of Orthopedics Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China.
Background: Glucocorticoids (GCs) are critical regulatory molecules in the body, commonly utilized in clinical practice for their potent anti-inflammatory and immunosuppressive properties. However, prolonged, high-dose GC therapy is frequently associated with femoral head necrosis, a condition known as glucocorticoid-induced osteonecrosis of the femoral head (GC-ONFH). Emerging evidence suggests that enhanced autophagy may mitigate apoptosis, thereby protecting osteoblasts from GC-induced damage and delaying the progression of ONFH.
View Article and Find Full Text PDFSteroids and Malignancy Increase Local Heparanase and Decrease Markers of Osteoblast Activity in Bone Tissue Microcirculation.
Biomolecules
November 2024
Thrombosis and Hemostasis Unit, Rambam Health Care Campus, Haifa 3109601, Israel.
Bone metastasis and steroids are known to activate the coagulation system and induce osteoporosis, pathological bone fractures, and bone pain. Heparanase is a protein known to enhance the hemostatic system and to promote angiogenesis, metastasis, and inflammation. The objective of the present study was to evaluate the effects of steroids and malignancy on the coagulation factors and osteoblast activity in the bone tissue.
View Article and Find Full Text PDFDual-target nanotherapy for vascular endothelium and bone mesenchymal stem cells halt steroid-induced osteonecrosis of the femoral head progression.
J Control Release
January 2025
Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. Electronic address:
Steroid-induced osteonecrosis of the femoral head (SANFH) is a common hip joint disease that imposes a heavy economic burden on society. Patients continue to experience bone necrosis even after discontinuing glucocorticoid therapy, and the specific mechanisms require further investigation. The results of this study demonstrate that exosomes secreted by damaged vascular endothelial cells in SANFH lesions may be a crucial factor leading to abnormal adipogenic differentiation of bone marrow stromal cells (BMSCs).
View Article and Find Full Text PDFThe decrease in zinc-finger E-box-binding homeobox-1 could accelerate steroid-induced osteonecrosis of the femoral head by repressing type-H vessel formation via Wnt/β-catenin pathway.
Animal Model Exp Med
December 2024
Orthopedic Center, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
Background: Zinc-finger E-box-binding homeobox-1 (ZEB1) is predominantly found in type-H vessels. However, the roles of ZEB1 and type-H vessels in steroid-induced osteonecrosis of the femoral head (SONFH) are unclear.
Methods: Human femoral heads were collected to detect the expression of ZEB1 and the levels of type-H vessels.
Knockdown of Gfi1 increases BMSCs exosomal miR-150-3p to inhibit osteoblast ferroptosis in steroid-induced osteonecrosis of the femoral head through BTRC/Nrf2 axis.
Endocr J
December 2024
Laboratory Animal Centre, The Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China.
The ferroptosis of osteoblasts has been demonstrated to play a significant role in the development of steroid-induced osteonecrosis of the femoral head (SONFH). Additionally, microRNAs (miRNAs) have been identified as regulators of SONFH progression. However, the precise role of miRNAs in the regulation of osteoblast ferroptosis remains unclear.
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