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Pharmacol."],"abstract":"<jats:p>Osteoporosis (OP) is defined as low bone mineral density which features over activated osteoclasts (OCs) and bone resorption. Targeting excessive OCs activity is thought to be an effective therapeutic approach for OP treatment. \u03b1-asarone (ASA), a compound from the traditional Chinese medicinal herb <jats:italic>Acorus tatarinowii<\/jats:italic>, has been widely used as a therapeutic agent against several diseases such as epilepsy, cough, bronchitis and asthma for many years. Recently, it was reported that ASA-derived lignins which were purified from <jats:italic>Acorus tatarinowii<\/jats:italic> root tissues effectively suppressed both RANKL-induced osteoclastogenesis and bone resorption. Besides, a classic Chinese formulation Bajitianwan (BJTW) which consisted of root and rhizome of <jats:italic>Acorus tatarinowii Schott<\/jats:italic> also showed positive effects on age-related bone loss. In the present study, we aimed to study the effects of ASA on osteoclastogenesis <jats:italic>in vitro<\/jats:italic> and <jats:italic>in vivo.<\/jats:italic> As illustrated by TRAP staining, ASA was capable of inhibiting RANKL-induced osteoclastogenesis in a dose-dependent manner, not only at an early-stage, but also in the late-stage. Besides, it also effectively suppressed bone resorption of mature OCs in a pit resorption assay. The formation of F-actin ring during osteoclastogenesis, which was important in OCs bone-resorption, was impaired as well. Subsequent mechanism experiments exposed that ASA inhibited osteoclastogenesis related genes in a time-dependent manner through AKT, p38 and NF-\u03baB, followed by NFATc1\/c-fos signaling pathway. Notably, our <jats:italic>in vivo<\/jats:italic> study uncovered that ASA was capable of improving the bone microstructure in oestrogen-deficiency induced OP models. Thus, our current work highlighted the important role of an old drug ASA in bone metabolism especially in OCs differentiation. ASA may find its potential as a lead compound to treat excessive OCs activity-induced bone loss diseases and more structure optimization is further needed.<\/jats:p>","DOI":"10.3389\/fphar.2022.780590","type":"journal-article","created":{"date-parts":[[2022,3,18]],"date-time":"2022-03-18T09:31:41Z","timestamp":1647595901000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":11,"title":["\u03b1-Asarone Attenuates Osteoclastogenesis and Prevents Against Oestrogen-Deficiency Induced Osteoporosis"],"prefix":"10.3389","volume":"13","author":[{"given":"Hao","family":"Tian","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tao","family":"Jiang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kai","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ruonan","family":"Ning","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tianqi","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qi","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Niandong","family":"Qian","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ping","family":"Huang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lei","family":"Guo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Min","family":"Jiang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaobing","family":"Xi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xing","family":"Xu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lianfu","family":"Deng","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2022,3,18]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"251","DOI":"10.1016\/j.bone.2006.09.023","article-title":"The Molecular Understanding of Osteoclast Differentiation","volume":"40","author":"Asagiri","year":"2007","journal-title":"Bone"},{"key":"B2","doi-asserted-by":"publisher","first-page":"5","DOI":"10.1007\/s001980070028","article-title":"Osteoprotegerin and its Ligand: a New Paradigm for Regulation of Osteoclastogenesis and Bone Resorption","volume":"5","author":"Aubin","year":"2000","journal-title":"Medscape Womens Health"},{"key":"B3","doi-asserted-by":"publisher","first-page":"417","DOI":"10.1038\/nm.1945","article-title":"Estrogen-dependent and C-C Chemokine Receptor-2-dependent Pathways Determine Osteoclast Behavior in Osteoporosis","volume":"15","author":"Binder","year":"2009","journal-title":"Nat. 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