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In this study, we examined the effects of 4HR administration on the submandibular gland in a growing rat model.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>Four-week-old rats were used in this study. The experimental group (nine males and eight females) received 12.8\u00a0mg\/kg of 4HR weekly for 12 weeks. Ten rats (five males and five females) were used as controls. The submandibular glands of rats were collected 12 weeks after the first administration of 4HR. The weight of the glands was measured. Histological analysis, immunoprecipitation-high-performance liquid chromatography (IP-HPLC), and western blotting were performed.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The weights of the rat submandibular glands were higher in the experimental groups than in the control group, especially in male rats (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). The vascular endothelial growth factor (VEGF) and testosterone in the submandibular glands were more highly expressed in 4HR-treated male rats than in untreated rats, as detected by both western blotting and immunohistochemistry. The IP-HPLC results demonstrated that the expression levels of Ki67, epidermal growth factor, and testosterone in the submandibular glands were higher in 4HR-treated male rats than in untreated rats.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>This study demonstrated that the systemic administration of 4HR increased the weight of submandibular glands in male rats. In addition, the testosterone and VEGF expression levels in the submandibular glands increased owing to 4HR administration.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s13005-022-00320-7","type":"journal-article","created":{"date-parts":[[2022,6,6]],"date-time":"2022-06-06T12:04:04Z","timestamp":1654517044000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Effects of 4-hexylresorcinol administration on the submandibular glands in a growing rat model"],"prefix":"10.1186","volume":"18","author":[{"given":"Joo-Hyung","family":"Yoon","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dae-Won","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Suk Keun","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5088-2732","authenticated-orcid":false,"given":"Seong-Gon","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2022,6,6]]},"reference":[{"issue":"16","key":"320_CR1","doi-asserted-by":"publisher","first-page":"8935","DOI":"10.3390\/ijms22168935","volume":"22","author":"I-S Lee","year":"2021","unstructured":"Lee I-S, Kim D-W, Oh J-H, Lee SK, Choi J-Y, Kim S-G, Kim T-W. 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