Elevated Levels of Estrogen Suppress Hepcidin Synthesis and Enhance Serum Iron Availability in Premenopausal Women

Bajbouj, KhuloudSharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE (author)

Clinical and experimental observations have long suggested that elevated levels of estrogen associate with increased serum iron availability. Additionally, recent work has shown that estrogen can downregulate hepcidin synthesis in vitro. This study aims at assessing whether the ability of estrogen to downregulate hepcidin synthesis translates into changes in serum iron status. Hepcidin synthesis was evaluated in MCF-7, Hep-G2 and SKOV-3 cells treated with increasing concentrations of estrogen and cultured for up to 24 h post treatment. The correlation between levels of serum estrogen, hepcidin and iron was assessed using serum samples collected from 153 premenopausal women at random and samples collected from 6 women at days 1, 5, 10, 16, 21 and 28 of the monthly cycle. Estrogen-treated MCF-7 cells showed a significant reduction in hepcidin synthesis, especially at 20 nM/24 h E2 treatment. Hepcidin synthesis was also significantly reduced in Hep-G2 and SKOV-3 cells at 20 nM/24 h E2 treatment. In serum samples collected at random, estrogen (P=0.022; R=-0.213) and iron (P=0.028; R=-0.316) correlated negatively with hepcidin and positively with each other (P=0.033; R=0.319). An overall similar pattern was also observed in monthly cycle-timed samples. These findings suggest that elevated levels of estrogen reduce hepcidin synthesis as means of enhancing serum iron content in menstruating women.

Shafarin, JasminSharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE (author)
Allam, HildaDepartment of Medical Laboratory Sciences, College of Health Sciences (author)
Madkour, MohamedDepartment of Medical Laboratory Sciences, College of Health Sciences (author)
Awadallah, SamirSharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE; Department of Medical Laboratory Sciences, College of Health Sciences (author)
El-Serafi, Ahmed Taher,1977-Sharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE; College of Medicine, University of Sharjah, Sharjah, UAE(Swepub:liu)ahmel66 (author)
Sandeep, DivyasreeSharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE (author)
Hamad, MawiehSharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE; Department of Medical Laboratory Sciences, College of Health Sciences (author)
Sharjah Institute for Medical Research, University of Sharjah, Sharjah, UAEDepartment of Medical Laboratory Sciences, College of Health Sciences (creator_code:org_t)

In:Experimental and clinical endocrinology & diabetes: Georg Thieme Verlag KG126:07, s. 453-4590947-73491439-3646

By the author/editor: Bajbouj, Khuloud; Shafarin, Jasmin; Allam, Hilda; Madkour, Mohamed; Awadallah, Samir; El-Serafi, Ahmed ...; show more...; Sandeep, Divyasr ...; Hamad, Mawieh; show less...

About the subject

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Cancer and Oncol ...

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Pediatrics

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Health Sciences; and Nutrition and Di ...

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