{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T13:04:52Z","timestamp":1777727092569,"version":"3.51.4"},"reference-count":63,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2018,2,13]],"date-time":"2018-02-13T00:00:00Z","timestamp":1518480000000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["J Int Med Res"],"published-print":{"date-parts":[[2018,4]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>To analyse intake of vitamin A (VA) and retinol concentrations in maternal blood, breast milk (BM), and the umbilical cord (UC) of newborns, and to determine the associations among these variables.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We performed a cross-sectional, epidemiological study of 180 mother\u2013newborn dyads. Maternal and UC blood samples and BM were collected. VA intake by the mother over 30 days was assessed using a questionnaire.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Mean retinol concentrations in maternal serum, the UC, and BM were 0.65\u2009\u00b1\u20090.27, 0.36\u2009\u00b1\u20090.18, and 2.95\u2009\u00b1\u20092.70 \u00b5mol\/L, respectively. Retinol concentrations &lt;0.70 \u00b5mol\/L were found in 57.2% of maternal blood samples and in 94.9% of UC samples. A total of 27.9% of BM samples showed retinol concentrations &lt;1.05\u2009\u00b5mol\/L. Mean VA intake by the mothers was 1041.33\u2009\u00b1\u20091187.86 \u00b5g retinol activity equivalents\/day and was inadequate (&lt;550 \u00b5g retinol activity equivalents\/day) in 44.7%.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>High proportions of insufficient retinol concentrations were observed in the UC, maternal blood, and BM. A high percentage of pregnant women had inadequate VA intake. Mothers with insufficient serum retinol concentrations had newborns with lower retinol concentrations in the UC. Higher retinol concentrations were observed in maternal blood and the UC with a higher VA intake.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/0300060518757155","type":"journal-article","created":{"date-parts":[[2018,2,13]],"date-time":"2018-02-13T06:45:49Z","timestamp":1518504349000},"page":"1555-1569","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":18,"title":["Vitamin A intake of Brazilian mothers and retinol concentrations in maternal blood, human milk, and the umbilical cord"],"prefix":"10.1177","volume":"46","author":[{"given":"Thalia Manfrin Martins","family":"Deminice","sequence":"first","affiliation":[{"name":"Department of Puericulture and Pediatrics, Ribeir\u00e3o Preto Medical School, University of S\u00e3o Paulo, Av. Bandeirantes, Monte Alegre, Ribeir\u00e3o Preto\/SP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3464-6523","authenticated-orcid":false,"given":"Ivan Savioli","family":"Ferraz","sequence":"additional","affiliation":[{"name":"Department of Puericulture and Pediatrics, Ribeir\u00e3o Preto Medical School, University of S\u00e3o Paulo, Av. Bandeirantes, Monte Alegre, Ribeir\u00e3o Preto\/SP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jacqueline Pontes","family":"Monteiro","sequence":"additional","affiliation":[{"name":"Department of Puericulture and Pediatrics, Ribeir\u00e3o Preto Medical School, University of S\u00e3o Paulo, Av. Bandeirantes, Monte Alegre, Ribeir\u00e3o Preto\/SP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alceu Afonso","family":"Jord\u00e3o","sequence":"additional","affiliation":[{"name":"Nutrition and Metabolism Division of the Department of Health Sciences, Ribeir\u00e3o Preto Medical School, University of S\u00e3o Paulo, Av. Bandeirantes, Monte Alegre, Ribeir\u00e3o Preto\/SP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L\u00edvia Maria Cordeiro Sim\u00f5es","family":"Ambr\u00f3sio","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, Ribeir\u00e3o Preto Medical School, University of S\u00e3o Paulo, Av. 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S\u00edntese de indicadores sociais: uma an\u00e1lise das condi\u00e7\u00f5es de vida da popula\u00e7\u00e3o brasileira. \nRio de Janeiro, Brazil: \nIBGE, 2016, pp. 137."}],"container-title":["Journal of International Medical Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/0300060518757155","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/0300060518757155","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/0300060518757155","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T10:48:36Z","timestamp":1777459716000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/0300060518757155"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,2,13]]},"references-count":63,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2018,4]]}},"alternative-id":["10.1177\/0300060518757155"],"URL":"https:\/\/doi.org\/10.1177\/0300060518757155","relation":{},"ISSN":["0300-0605","1473-2300"],"issn-type":[{"value":"0300-0605","type":"print"},{"value":"1473-2300","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,2,13]]}}}