{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,25]],"date-time":"2026-08-25T11:35:15Z","timestamp":1787657715062,"version":"build-2736575974"},"reference-count":56,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2025,2,27]],"date-time":"2025-02-27T00:00:00Z","timestamp":1740614400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Grant-in-Aid from the Japan Society for the Promotion of Science (JSPS) KAKENHI","award":["22K05490"],"award-info":[{"award-number":["22K05490"]}]},{"name":"Institute of Global Innovation Research","award":["22K05490"],"award-info":[{"award-number":["22K05490"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Phytochemicals, such as flavonoids, are bioactive compounds produced by plants, including citrus fruits, that exhibit antioxidant effects on mammalian cells and tissues. Polymethoxyflavones (PMFs) are a family of flavonoids found in the pulp and peel of citrus fruits, and have been reported to have potent antioxidant activity implicated in the prevention of human diseases. Several studies have shown that PMFs have a protective effect on bone resorption in mouse models of diseases, including osteoporosis, rheumatoid arthritis, and periodontal disease. PMFs significantly suppressed the differentiation of osteoclasts (bone resorptive cells) through indirect and direct mechanisms. The indirect effect of PMFs is the suppression of inflammatory mediator production, such as prostaglandin E2 (PGE2), and the reduction of osteoclastic inducers, such as the receptor activator of NF-\u03baB ligand (RANKL), in osteoblasts (bone-forming cells). The direct effect of PMF suppresses osteoclast differentiation and function by inhibiting the NF-\u03baB signaling pathway. In silico molecular docking studies indicated that PMFs target the ATP-binding pocket of IKK\u03b2 and inhibit the NF-\u03baB signaling pathway. These findings suggest that PMFs protect against bone destruction by interfering with the NF-\u03baB pathway in osteoblasts and osteoclasts. In this review, we summarize the latest findings regarding the effects of PMFs on various bone resorption-related diseases in mouse models.<\/jats:p>","DOI":"10.3390\/nu17050822","type":"journal-article","created":{"date-parts":[[2025,2,28]],"date-time":"2025-02-28T08:05:54Z","timestamp":1740729954000},"page":"822","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Polymethoxyflavones and Bone Metabolism"],"prefix":"10.3390","volume":"17","author":[{"given":"Michiko","family":"Hirata","sequence":"first","affiliation":[{"name":"Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei-shi 184-8588, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5683-8951","authenticated-orcid":false,"given":"Tsukasa","family":"Tominari","sequence":"additional","affiliation":[{"name":"Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei-shi 184-8588, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chiho","family":"Matsumoto","sequence":"additional","affiliation":[{"name":"Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei-shi 184-8588, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Urara","family":"Kasuga","sequence":"additional","affiliation":[{"name":"Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei-shi 184-8588, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Keisuke","family":"Ikeda","sequence":"additional","affiliation":[{"name":"Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei-shi 184-8588, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chisato","family":"Miyaura","sequence":"additional","affiliation":[{"name":"Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei-shi 184-8588, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8101-0558","authenticated-orcid":false,"given":"Florian M. 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