{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,7]],"date-time":"2026-02-07T15:50:08Z","timestamp":1770479408953,"version":"3.49.0"},"reference-count":41,"publisher":"Oxford University Press (OUP)","issue":"4","license":[{"start":{"date-parts":[[1997,4,1]],"date-time":"1997-04-01T00:00:00Z","timestamp":859852800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[1997,4,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Transdermal estrogen therapy is now an accepted form of treatment for postmenopausal osteoporosis. Ninety postmenopausal osteoporotic women were randomized to receive either transdermal estrogen (0.05 mg\/day 17\u03b2-estradiol) and calcium (n = 45) or calcium alone (n = 45). The study period was 2 years. Bone mineral density (BMD) at the lumbar spine (by dual-energy X-ray absorptiometry [DXA]) and markers of bone turnover (alkaline phosphatase, osteocalcin, hydroxyproline, pyridinoline cross-links) were assessed at baseline and after 1 and 2 years. In the estrogen-treated group, BMD showed a significant increase (p &amp;lt; 0.001) both after 1 and 2 years, with a reduction in biochemical markers. To investigate the effectiveness of estrogen treatment of postmenopausal osteoporosis in relation to bone turnover, we also divided the patients on the basis of bone turnover, as assessed by measurement of whole body retention (WBR) of99mTc-methylene diphosphonate. WBR revealed that 26 patients had high bone turnover (HT) and 55 had low bone turnover (LT). The response to estrogen was greater in the HT patients than in the LT patients; in fact BMD increased by 5.7 and 6.6% in HT patients and by 2.6 and 2.7% in LT patients after 1 and 2 years, respectively. In conclusion, the present study demonstrates that, while the BMD decreases in the patients treated with calcium alone, 2-year treatment with transdermal estrogen increases axial BMD and that the response to estrogen treatment is influenced by bone turnover. Therefore, the evaluation of bone turnover may be useful to identify those postmenopausal osteoporotic women who may especially benefit from treatment with estrogen.<\/jats:p>","DOI":"10.1359\/jbmr.1997.12.4.624","type":"journal-article","created":{"date-parts":[[2006,4,26]],"date-time":"2006-04-26T22:14:04Z","timestamp":1146089644000},"page":"624-631","source":"Crossref","is-referenced-by-count":42,"title":["The Usefulness of Bone Turnover in Predicting the Response to Transdermal Estrogen Therapy in Postmenopausal Osteoporosis"],"prefix":"10.1093","volume":"12","author":[{"given":"S.","family":"Dr. Gonnelli","sequence":"first","affiliation":[{"name":"Institute of Internal Medicine, University of Siena, Siena, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C.","family":"Cepollaro","sequence":"additional","affiliation":[{"name":"Institute of Internal Medicine, University of Siena, Siena, 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