{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,7]],"date-time":"2026-02-07T18:10:46Z","timestamp":1770487846249,"version":"3.49.0"},"reference-count":22,"publisher":"Walter de Gruyter GmbH","issue":"3","license":[{"start":{"date-parts":[[2016,9,1]],"date-time":"2016-09-01T00:00:00Z","timestamp":1472688000000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/3.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2016,9,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:bold>Aim:<\/jats:bold>To find correlations between high thiocyanate and nitrate levels and low selenium levels and the indicators of the iodine and iron status of postpartum women.<\/jats:p><jats:p><jats:bold>Materials and methods:<\/jats:bold>The study included 41 mothers aged 26.4\u00b15.9 yrs from Asenovgrad and nearby villages. Urinary iodine was determined by the Sandell-Kolthoff reaction and thiocyanate \u2013 by the interaction of these ions with acidic solution of KMnO<jats:sub>4<\/jats:sub>; for serum nitrates we used the colorimetric method; serum selenium was assessed by electro-thermal atomic-absorption spectrophotometry; thyroxin (FT4), the thyroid stimulating hormone (TSH), serum ferritin (SF), and serum transferrin receptor (sTfR) were determined using ELISA; Hb levels were determined by hematology analyzer.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold>Assessing the iodine status, we found a negative correlation between the levels of iodine and thiocyanates in urine (R=\u22120.717, \u0440&lt;0.0001), a positive correlation between nitrates and TSH (R=0.487, \u0440=0.003) and a negative correlation between nitrates and FT4 (R=\u22120.312, \u0440=0.06). For the iron status, we found a negative correlation between nitrates and SF (R=\u22120.429, \u0440=0.009) and between nitrates and Hb (R=\u22120.383, \u0440=0.021). The Mann-Whitney U-test showed that in women with nitrate levels higher than the mean value there was low FT4 level (\u0440=0.06), high TSH level (\u0440=0.013), low Hb concentration (\u0440=0.061) and low SF concentration (\u0440=0.005). The combined effects of environmental factors (elevated nitrate levels and low selenium level) on the iodine and iron status are manifested by low concentrations of FT4 (\u0440=0.033), Hb (\u0440=0.06) and SF (\u0440=0.05) and high level of TSH (\u0440=0.05).<\/jats:p><jats:p>In<jats:bold>conclusion<\/jats:bold>, we found that environmental factors, especially when combined, have a negative impact on the iron and iodine status of females.<\/jats:p>","DOI":"10.1515\/folmed-2016-0024","type":"journal-article","created":{"date-parts":[[2016,10,19]],"date-time":"2016-10-19T10:02:12Z","timestamp":1476871332000},"page":"188-194","source":"Crossref","is-referenced-by-count":7,"title":["Effect of Nitrates, Thiocyanates and Selenium on the Iron and Iodine Status of Postpartum Women"],"prefix":"10.1515","volume":"58","author":[{"given":"Anelia V.","family":"Bivolarska","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ana I.","family":"Maneva","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Penka D.","family":"Gatseva","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mariana N.","family":"Katsarova","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"374","reference":[{"key":"ref141","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.envres.2015.09.013","article-title":"CO - 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