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- W4382398335 abstract "Abstract The aberrant differentiation of osteoclasts is a key feature of the pathogenesis of osteoporosis, which has a devastating impact on human health. While the effects of Orientin (Ori) on osteoporosis, particularly on RANKL‐stimulated osteoclast production and activation, remain still unclear, Ori has been found to display several biological activities, including antioxidant and anti‐inflammatory. In this work, we investigated the possible pathways through which Ori suppressed RANKL‐induced osteoclast development and showed for the first time that it does so. The macrophages from the bone marrow (BMMs) were cultivated and then treated with Ori after being stimulated with RANKL. Then, TRAP‐positive multinucleated cells were counted, and F‐actin ring analysis was used to assess Ori's impact on mature osteoclast development. In addition, dihydroethidium (DHE) staining was used to evaluate the impact of Ori on RANKL‐induced reactive oxygen species (ROS). In addition, we performed western blotting and quantitative RT‐PCR analysis to investigate probable causes of these downregulation effects. We discovered that Ori inhibits the creation of osteoclasts, the gene and protein expressions unique to osteoclasts, and the ROS production. By activating Nrf2 and other ROS‐scavenging enzymes, Ori reduces intracellular ROS levels. The expression of the main transcription factor of osteoclast development, c‐Fos, was downregulated together with NFATc1, CTSK, and NFATc2, thanks to Ori's inhibition of RANKL‐induced NF‐κB. Consistent with its in vitro antiosteoclastogenic action, Ori therapy in the ovariectomized (OVX) rat model was also able to restore bone mass and improve microarchitecture in the distal femurs. Together, our results demonstrate that Ori is a flavonoid molecule with therapeutic promise for bone illnesses associated with osteoclasts, such as osteoporosis." @default.
- W4382398335 created "2023-06-29" @default.
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- W4382398335 date "2023-06-28" @default.
- W4382398335 modified "2023-10-17" @default.
- W4382398335 title "Orientin suppresses osteoclastogenesis and ameliorates ovariectomy‐induced osteoporosis via suppressing ROS production" @default.
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- W4382398335 doi "https://doi.org/10.1002/fsn3.3516" @default.
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