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Among the several rotenoids, amorphigenin is isolated from the leaves of Amopha Fruticosa and it is known that has anti-proliferative effects and anti-cnacer effects in many cell types. The main aim of this study was to investigate the effects of amorphigenin on osteoclast differentiation in vitro and on LPS treated inflammatory bone loss model in vivo. We show here that amorphigenin inhibited RANKL-induced osteoclast differentiation from bone marrow macrophages in a dose dependent manner without cellular toxicity. Anti-osteoclastogenic properties of amorphigenin were based on a down-regulation of c-fos and NFATc1. Amorphigenin markedly inhibited RANKL-induced p38 and NF-κB pathways, but other pathways were not affected. Micro-CT analysis of the femurs showed that amorphigenin protected the LPS-induced bone loss. We concluded that amorphigenin can prevent inflammation-induced bone loss. Thus we expect that amorphigenin could be a treatment option for bone erosion caused by inflammation.
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http://dx.doi.org/10.5115/acb.2010.43.4.310 | DOI Listing |
FASEB J
September 2025
Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials
The onset and progression of periodontitis are closely related to metabolic reprogramming in the periodontal microenvironment, with osteoclasts playing a critical role in tissue destruction. Single-cell RNA sequencing (scRNA-seq) of periodontal tissues from healthy individuals and patients with severe chronic periodontitis revealed a significant increase in the expression of mitochondrial-related genes during osteoclast differentiation, suggesting the critical role of mitochondrial function in this process. This study investigates the potential of the novel mitoribosome-targeting antibiotic radezolid in inhibiting osteoclast differentiation.
View Article and Find Full Text PDFACS Nano
September 2025
Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Key Laboratory of Innovation and Transformation of Advanced Medical Devices of Ministry of Industry and Information Technology, National Medical Innovation Platform for Industry-Education Integration in Advanced Medical Dev
Hyperglycemia-induced oxidative stress and inflammation critically impair diabetic bone defect repair. Here, a radially oriented microchannel scaffold (D-GSH@QZ) was developed via a directional freezing technique integrated with photo-cross-linking strategies. The scaffold was fabricated from gelatin methacryloyl, silk fibroin methacryloyl, and nanohydroxyapatite (HAp) to mimic the natural bone matrix, while incorporating quercetin-loaded ZIF-8 nanoparticles (Qu@ZIF-8) for pathological microenvironment modulation.
View Article and Find Full Text PDFStem Cells Int
August 2025
Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian, China.
Postmenopausal osteoporosis (PMOP) is a common bone metabolic disorder in middle-aged and elderly women, yet its pathogenesis remains unclear. This study investigates the effect of nuclear factor erythroid 2-related factor 2 (Nrf2) deficiency on bone homeostasis to provide insight into the mechanisms underlying PMOP. Sixteen female SD rats were randomly assigned to Sham and ovariectomized (OVX) groups.
View Article and Find Full Text PDFJBMR Plus
October 2025
Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia.
Genome-wide association studies (GWAS) relevant to osteoporosis have identified hundreds of loci; however, understanding how these variants influence the phenotype is complicated because most reside in non-coding DNA sequence that serves as transcriptional enhancers and repressors. To advance knowledge on these regulatory elements in osteoclasts (OCs), we performed Micro-C analysis, which informs on the genome topology of these cells and integrated the results with transcriptome and GWAS data to further define loci linked to BMD. Using blood cells isolated from 4 healthy participants aged 31-61 yr, we cultured OC in vitro and generated a Micro-C chromatin conformation capture dataset.
View Article and Find Full Text PDFFood Sci Biotechnol
October 2025
Department of Herbal Medicine, College of Pharmacy, Wonkwang University, 460 Iksandae-Ro, Iksan, Jeonbuk 54538 Republic of Korea.
Lycii fructus (LF) is widely used in traditional Asian medicine and as a dietary supplement due to its potential health benefits. Zeaxanthin (ZEA), a key carotenoid in LF, is crucial in supporting eye health. However, the effects of LF and ZEA on receptor activator of NF-kappaB Ligand (RANKL)-mediated osteoclast differentiation were not confirmed.
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