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Aerobic exercise prevents renal osteodystrophy via irisin-activated osteoblasts.
JCI Insight
January 2025
Department of Nephrology, Blood Purification Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China.
Renal osteodystrophy is commonly seen in patients with chronic kidney disease (CKD) due to disrupted mineral homeostasis. Given the impaired renal function in these patients, common anti-resorptive agents, including bisphosphonates, must be used with caution or even contraindicated. Therefore, an alternative therapy without renal burden to combat renal osteodystrophy is urgently needed.
View Article and Find Full Text PDFMonocytes and interstitial macrophages contribute to hypoxic pulmonary hypertension.
J Clin Invest
January 2025
Department of Medicine, University of California San Francisco, San Francisco, United States of America.
Hypoxia is a major cause of pulmonary hypertension (PH) worldwide, and it is likely that interstitial pulmonary macrophages contribute to this vascular pathology. We observed in hypoxia-exposed mice an increase in resident interstitial macrophages, which expanded through proliferation and expressed the monocyte recruitment ligand CCL2. We also observed an increase in CCR2+ macrophages through recruitment, which express the protein thrombospondin-1 that functionally activates TGF-beta to cause vascular disease.
View Article and Find Full Text PDFLeptin potentiates bone loss at skeletal sites distant from focal inflammation in female ob/ob mice.
J Endocrinol
January 2025
U Iwaniec, Skeletal Biology Laboratory, Oregon State University, Corvallis, United States.
Leptin increases focal inflammation and osteolysis induced by polyethylene particles in leptin-deficient ob/ob mice suggesting the adipokine, an important immune modulator, contributes to orthopedic implant failure. Focal inflammation leads to bone loss at distant skeletal sites, and it is plausible that leptin also contributes to this response. We tested this possibility in 6-week-old female ob/ob mice (6-8/group) by evaluating bone architecture, turnover, and gene expression 12 days following surgical placement of polyethylene particles over calvaria.
View Article and Find Full Text PDFNuclear factor I-C regulates intramembranous bone formation via control of FGF signalling.
Heliyon
January 2025
Department of Oral Histology-Developmental Biology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea.
Our previous studies indicate that NFI-C is essential for tooth root development and endochondral ossification. However, its exact role in calvarial intramembranous bone formation remains unclear. In this study, we demonstrate that the disruption of the gene leads to defects in intramembranous bone formation, characterized by decreased osteogenic proliferative activity and reduced osteoblast differentiation during postnatal osteogenesis.
View Article and Find Full Text PDFThe Role of Dectin-1-Akt-RNF146 Pathway in β-Glucan Induced Immune Trained State of Monocyte in Sepsis.
J Inflamm Res
January 2025
Department of Anesthesiology, Zhongshan Hospital Fudan University, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, People's Republic of China.
Background: Sepsis is regarded as a dysregulated immune response to infections. Recent study showed partially reversal of immunosuppression by trained immunity, which fosters an enhanced immune response towards a secondary challenge. However, the role of trained immunity in sepsis has not been fully understood.
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