{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,8]],"date-time":"2025-11-08T17:16:03Z","timestamp":1762622163690,"version":"3.41.2"},"reference-count":59,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2023,6,26]],"date-time":"2023-06-26T00:00:00Z","timestamp":1687737600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Nutr."],"abstract":"<jats:sec><jats:title>Introduction<\/jats:title><jats:p>Kyung-Ok-Ko (KOK) is a popular traditional medicine used as a natural alternative to hormone replacement therapy for treating postmenopausal symptoms in Asia. <jats:italic>Pueraria lobata<\/jats:italic> Ohwi (<jats:italic>P. lobata<\/jats:italic>) is rich in isoflavones and has been traditionally used in combination with other herbs to produce synergistic and pharmaceutical effects <jats:italic>via<\/jats:italic> a multi-target approach for disease treatment. We aimed to investigate the phytoestrogenic effects of KOK extract against postmenopausal symptoms in ovariectomized (OVX) rats and confirm its efficacy by mixing KOK and <jats:italic>P. lobata<\/jats:italic> extracts.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>OVX rats were daily oral administrated with KOK and KOK\u2009+\u2009<jats:italic>P. lobata<\/jats:italic> mixture extracts (300\u2013400\u2009mg\/kg) and their body weight and tail temperature were monitored for 12\u2009weeks. The biochemical parameters, estradiol levels, and bone turnover markers were measured in the serum samples. Moreover, the estrogen receptor, ER-\u03b1 and ER-\u03b2 expression in the uterus and the uterus morphology were evaluated. AMPK, ATG1\/ULK1, and mTOR protein expression in the liver were assessed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The 12-week treatment with KOK and KOK\u2009+\u2009<jats:italic>P. lobata<\/jats:italic> mixture extracts did not cause liver damage or hormonal changes in the OVX rats. The treatments reduced the high lipid accumulation-related body weight gain and the tail temperature increase that was induced by ovariectomy. Further, it exhibited protective effects against hyperlipidemia and osteoporosis. No significant difference was observed in uterine weight compared to the OVX-treated group, while endometrial thickness reduction inhibition was observed due to ovariectomy. Bone mineral density (BMD) and serum osteocalcin levels, which decreased in OVX rats, increased with both treatments. Western blotting analysis showed that ER-\u03b1 and ER-\u03b2 were not expressed in the treated rats, whereas these proteins were expressed in Sham-operated rats. No significant differences in the phosphorylation of AMPK were observed; however, the ATG1\/ULK1 and mTOR protein phosphorylation levels were upregulated and downregulated in the treated rats compared to those of OVX rats, respectively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>This is the first <jats:italic>in vivo<\/jats:italic> study observing the efficacy and synergistic effects of the mixture of KOK and <jats:italic>P. lobata<\/jats:italic>. Our results suggest the potential of KOK and KOK\u2009+\u2009<jats:italic>P. lobata<\/jats:italic> mixture as an alternative therapy for alleviating menopausal symptoms.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fnut.2023.1171346","type":"journal-article","created":{"date-parts":[[2023,6,26]],"date-time":"2023-06-26T19:12:00Z","timestamp":1687806720000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":2,"title":["Ameliorative effects of Kyung-Ok-Ko and its mixture with Pueraria lobata Ohwi on postmenopausal osteoporosis by promoting phytoestrogenic activity in 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