{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T20:16:27Z","timestamp":1789416987924,"version":"build-2803163510"},"reference-count":47,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2025,5,7]],"date-time":"2025-05-07T00:00:00Z","timestamp":1746576000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Japan Society for the Promotion of Science","award":["19K09761"],"award-info":[{"award-number":["19K09761"]}]},{"name":"Japan Society for the Promotion of Science","award":["22K16864"],"award-info":[{"award-number":["22K16864"]}]},{"name":"Japan Society for the Promotion of Science","award":["25K12642"],"award-info":[{"award-number":["25K12642"]}]},{"name":"JAMW Ogyaa Donation Foundation","award":["19K09761"],"award-info":[{"award-number":["19K09761"]}]},{"name":"JAMW Ogyaa Donation Foundation","award":["22K16864"],"award-info":[{"award-number":["22K16864"]}]},{"name":"JAMW Ogyaa Donation Foundation","award":["25K12642"],"award-info":[{"award-number":["25K12642"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>25-hydroxyvitamin D (25(OH)D) regulates lipid metabolism, and its decrease is proposed as a pathogenesis of metabolic syndrome, gestational diabetes mellitus (GDM), and eventually fetal adiposity. Decreased 25(OH)D is also linked with the development of gestational diabetes mellitus (GDM), which is associated with increased fetal adiposity. Fetuses are dependent on the supply of 25(OH)D from maternal circulation. However, the influence of maternal serum 25(OH)D on fetal adiposity remains unclear. This study aimed to investigate the association between maternal serum 25(OH)D and fetal adiposity. A prospective longitudinal study was conducted in a cohort of 89 (including 21 GDM) singleton pregnancies. Maternal blood samples were obtained at 10, 24, 30, and 36 weeks, and fetal ultrasonography was performed at 24, 30, and 36 weeks of gestation. Estimated fetal adiposity (EFA) was calculated as the average z-score of cross-sectional arm and thigh percentage fat area and anterior abdominal wall thickness as previously reported. The multiple linear regression analyses indicated that maternal 25(OH)D levels across gestation were not associated with EFA at 24 and 30 weeks, while maternal 25(OH)D at 24 weeks was inversely correlated with EFA at 36 weeks. Particularly, in the GDM group, maternal 25(OH)D levels at 10, 24, 30, and 36 weeks all showed a significant negative correlation with EFA at 36 weeks. Decreased maternal serum 25(OH)D level could be an early biomarker of increased fetal adiposity in late gestation, especially in diabetic pregnancies.<\/jats:p>","DOI":"10.3390\/ijms26094435","type":"journal-article","created":{"date-parts":[[2025,5,7]],"date-time":"2025-05-07T05:18:20Z","timestamp":1746595100000},"page":"4435","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Maternal Serum 25-Hydroxyvitamin D as a Possible Modulator of Fetal Adiposity: A Prospective Longitudinal Study"],"prefix":"10.3390","volume":"26","author":[{"given":"Keisuke","family":"Akita","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinanomachi, Shinjuku-ku 160-8582, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3652-5389","authenticated-orcid":false,"given":"Satoru","family":"Ikenoue","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinanomachi, Shinjuku-ku 160-8582, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-8974-6898","authenticated-orcid":false,"given":"Junko","family":"Tamai","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinanomachi, Shinjuku-ku 160-8582, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Toshimitsu","family":"Otani","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinanomachi, Shinjuku-ku 160-8582, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marie","family":"Fukutake","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinanomachi, Shinjuku-ku 160-8582, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2395-9591","authenticated-orcid":false,"given":"Yoshifumi","family":"Kasuga","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinanomachi, Shinjuku-ku 160-8582, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mamoru","family":"Tanaka","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinanomachi, Shinjuku-ku 160-8582, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,5,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"(2019). 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