{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T09:43:59Z","timestamp":1790156639665,"version":"4.0.1"},"reference-count":30,"publisher":"SAGE Publications","issue":"10","license":[{"start":{"date-parts":[[2013,8,9]],"date-time":"2013-08-09T00:00:00Z","timestamp":1376006400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["J Dent Res"],"published-print":{"date-parts":[[2013,10]]},"abstract":"<jats:p>Temporomandibular joint osteoarthritis (TMJOA) is clinically characterized by female preponderance, with a female-to-male ratio of more than 2:1; however, the underlying mechanism remains obscure. We examined the effects of estrogen on TMJOA induced by monosodium iodoacetate. Female rats were randomly and equally divided into 5 groups: control, sham-ovariectomized, and ovariectomized rats treated, respectively, with 17\u03b2-estradiol (E2) at doses of 0 \u00b5g, 20 \u00b5g, and 80 \u00b5g\/day until the end of the experiment. After induction of TMJOA, TMJs were evaluated by histopathology and microCT, and the expression of Fas, FasL, caspase 3, and caspase 8 was evaluated by real-time polymerase chain-reaction or immunohistochemistry. Another 5 groups of female rats were used to evaluate the effect of estrogen receptor antagonist ICI 182780 on E2 effects on TMJOA, when injected intraperitoneally into the control, sham-ovariectomized, and 80-\u00b5g-E2-treated groups. We found that E2 potentiated cartilage degradation and subchondral bone erosion in iodoacetate-induced TMJOA. E2 also potentiated mRNA expression of Fas, FasL, caspase 3, and caspase 8 in the condylar cartilage. Moreover, the estrogen receptor antagonist partially blocked E2 effects on TMJOA. These findings suggest that E2 could aggravate TMJOA, which may be an important mechanism underlying the sexual dimorphism of TMJOA.<\/jats:p>","DOI":"10.1177\/0022034513501323","type":"journal-article","created":{"date-parts":[[2013,8,10]],"date-time":"2013-08-10T00:40:20Z","timestamp":1376095220000},"page":"918-924","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":65,"title":["Estrogen Aggravates Iodoacetate-induced Temporomandibular Joint Osteoarthritis"],"prefix":"10.1177","volume":"92","author":[{"given":"X.D.","family":"Wang","sequence":"first","affiliation":[{"name":"Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China"},{"name":"Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, 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