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Multifocal osteochondromatous proliferation and paraneoplastic hematologic dyscrasia in the context of latent Epstein-Barr virus reactivation: a case of oncologic and infectious pathophysiology.
Skeletal Radiol
January 2025
College of Medicine/Radiology Department, October 6, University, 217G Pyramid Gardens, Cairo, Egypt.
This case report describes a 15-year-old male with multifocal osteochondromatous proliferation and paraneoplastic hematologic dyscrasia, linked to latent Epstein-Barr virus reactivation. Radiographic and advanced imaging revealed widespread skeletal lesions consistent with osteochondromatosis. Hematologic evaluation indicated pancytopenia with dysplastic megakaryocytes and marrow infiltration.
View Article and Find Full Text PDFSacral tumors: a comprehensive review of imaging, diagnostic challenges, and tumor mimics.
Skeletal Radiol
January 2025
Department of Radiology, Moffit Cancer Center Florida, Tampa, FL, USA.
The sacrum can harbor a diverse group of both benign and malignant tumors, including metastases. Primary tumors of the sacrum can arise from bone, cartilage, marrow, notochordal remnants, or surrounding nerves and vessels. Among a variety of primary tumors of the spine, chordoma, germ cell tumors and Ewing's sarcoma are recognized for their propensity to occur in the sacrum.
View Article and Find Full Text PDFCD9/SOX2-positive cells in the intermediate lobe of the rat pituitary gland exhibit mesenchymal stem cell characteristics.
Cell Tissue Res
January 2025
Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo, 181-8612, Japan.
Adult tissue stem cells of the anterior pituitary gland, CD9/SOX2-positive cells, are believed to exist in the marginal cell layer (MCL) bordering the residual lumen of the Rathke's pouch. These cells migrate from the intermediate lobe side of the MCL (IL-MCL) to the anterior lobe side of the MCL and may be involved in supplying hormone-producing cells. Previous studies reported that some SOX2-positive cells of the anterior lobe differentiate into skeletal muscle cells.
View Article and Find Full Text PDFBone Marrow Adipocytes as Novel Regulators of Metabolic Homeostasis: Clinical Consequences of Bone Marrow Adiposity.
Curr Obes Rep
January 2025
Maine Medical Center Research Institute, Maine Medical Center, 81 Research Drive, Scarborough, ME, 04074, USA.
Purpose Of Review: Bone marrow adipose tissue is a distinctive fat depot located within the skeleton, with the potential to influence both local and systemic metabolic processes. Although significant strides have been made in understanding bone marrow adipose tissue over the past decade, many questions remain regarding their precise lineage and functional roles.
Recent Findings: Recent studies have highlighted bone marrow adipose tissue's involvement in continuous cross-talk with other organs and systems, exerting both endocrine and paracrine functions that play a crucial role in metabolic homeostasis, skeletal remodeling, hematopoiesis, and the progression of bone metastases.
Biomimetic Extracellular Vesicles Containing Biominerals for Targeted Osteoporosis Therapy.
ACS Appl Mater Interfaces
January 2025
Organoid Research Center, Institute of Translational Medicine, Shanghai University, Shanghai 200444, People's Republic of China.
Osteoporosis (OP) is a systemic skeletal disorder characterized by decreased bone mineral density and a heightened risk of fractures. Therapies for OP have primarily focused on balancing bone formation and bone resorption, but enhancing the remineralization of osteoporotic bone is also a key strategy for effective repair. Recent insights into biomineralization mechanisms have highlighted the essential role of mineral-containing extracellular vesicles (EVs) secreted by osteoblasts in promoting bone marrow mesenchymal stromal/stem cell (BMSC) differentiation and initiating matrix mineralization.
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