Effect of Nitrates, Thiocyanates and Selenium on the Iron and Iodine Status of Postpartum Women.

Autor:	Bivolarska AV; Department of Chemistry and Biochemistry, Faculty of Pharmacy, Medical University of Plovdiv, Plovdiv, Bulgaria, Maneva AI; Department of Chemistry and Biochemistry, Faculty of Pharmacy, Medical University of Plovdiv, Plovdiv, Bulgaria, Gatseva PD; Department of Hygiene and Eco-medicine, Faculty of Public Health, Medical University of Plovdiv, Plovdiv, Bulgaria, Katsarova MN; Department of Chemistry and Biochemistry, Faculty of Pharmacy, Medical University of Plovdiv, Plovdiv, Bulgaria
Jazyk:	angličtina
Zdroj:	Folia medica [Folia Med (Plovdiv)] 2016 Sep 01; Vol. 58 (3), pp. 188-194.
DOI:	10.1515/folmed-2016-0024
Abstrakt:	Aim: 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. Materials and Methods: The study included 41 mothers aged 26.4±5.9 yrs from Asenovgrad and nearby villages. Urinary iodine was determined by the Sandell-Kolthoff reaction and thiocyanate - by the interaction of these ions with acidic solution of KMnO4; 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. Results: Assessing the iodine status, we found a negative correlation between the levels of iodine and thiocyanates in urine (R=-0.717, р<0.0001), a positive correlation between nitrates and TSH (R=0.487, р=0.003) and a negative correlation between nitrates and FT4 (R=-0.312, р=0.06). For the iron status, we found a negative correlation between nitrates and SF (R=-0.429, р=0.009) and between nitrates and Hb (R=-0.383, р=0.021). The Mann-Whitney U-test showed that in women with nitrate levels higher than the mean value there was low FT4 level (р=0.06), high TSH level (р=0.013), low Hb concentration (р=0.061) and low SF concentration (р=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 (р=0.033), Hb (р=0.06) and SF (р=0.05) and high level of TSH (р=0.05). In conclusion, we found that environmental factors, especially when combined, have a negative impact on the iron and iodine status of females.
Databáze:	MEDLINE
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