{"title":"Forsythia viridissima Leaf Extract Inhibits Trabecular Bone Mineral Loss in Rats Induced by a Low-Calcium Diet.","authors":"Yuichi Takajo, Jorge Sáez-Chandía, Yoshito Kakihara, Satoshi Inamasu","doi":"10.3177/jnsv.70.503","DOIUrl":null,"url":null,"abstract":"<p><p>The Forsythia has been used in herbal medicine, and the leaf is also expected to contain various putative bioactive substances. In this study, we investigated the effects of Forsythia viridissima leaf extract (FLE) on bone metabolism. The anti-osteoporotic effect of FLE was determined in male rats fed a low-calcium diet. Micro-CT analysis of the distal end of the left femur showed a trend toward less reduction in total bone mineral density (total BMD) in the group received FLE on a 0.05% low-calcium diet compared to the low-calcium control group. Also, trabecular bone mineral density (Tb.BMD) was significantly less decreased in the FLE group. Then, in vitro experiment, we found that matairesinol, a lignan particularly rich in Forsythia leaf, remarkably promotes osteoblastic mineralization. Thus, our study revealed that FLE inhibits the progression of osteoporosis caused by calcium deficiency.</p>","PeriodicalId":16624,"journal":{"name":"Journal of nutritional science and vitaminology","volume":"70 6","pages":"503-507"},"PeriodicalIF":0.7000,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of nutritional science and vitaminology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.3177/jnsv.70.503","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"NUTRITION & DIETETICS","Score":null,"Total":0}
引用次数: 0
Abstract
The Forsythia has been used in herbal medicine, and the leaf is also expected to contain various putative bioactive substances. In this study, we investigated the effects of Forsythia viridissima leaf extract (FLE) on bone metabolism. The anti-osteoporotic effect of FLE was determined in male rats fed a low-calcium diet. Micro-CT analysis of the distal end of the left femur showed a trend toward less reduction in total bone mineral density (total BMD) in the group received FLE on a 0.05% low-calcium diet compared to the low-calcium control group. Also, trabecular bone mineral density (Tb.BMD) was significantly less decreased in the FLE group. Then, in vitro experiment, we found that matairesinol, a lignan particularly rich in Forsythia leaf, remarkably promotes osteoblastic mineralization. Thus, our study revealed that FLE inhibits the progression of osteoporosis caused by calcium deficiency.
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The Journal of Nutritional Science and Vitaminology is an international medium publishing in English of original work in all branches of nutritional science, food science and vitaminology from any country.
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