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  • Title: Trace mineral status in post menopausal women: impact of hormonal replacement therapy.
    Author: Bureau I, Anderson RA, Arnaud J, Raysiguier Y, Favier AE, Roussel AM.
    Journal: J Trace Elem Med Biol; 2002; 16(1):9-13. PubMed ID: 11878754.
    Abstract:
    The risks of disturbances in trace mineral nutrition and metabolism are high following menopause. The aim of the study was to investigate the trace mineral status in postmenopausal women and the influence of hormonal replacement therapy on this status. Forty-four healthy postmenopausal women, aged 50-60 years old participated in the study. Eighteen were treated by combined hormonal replacement therapy (HRT) per os for at least two years, and 26 were untreated. Plasma trace mineral levels (Zn, Se, Cr, Mn, Cu), red blood cell antioxidant enzymes (Cu-Zn SOD, Se-GPX, Cu), urinary Zn, Cr, Mg, and Ca excretion were measured. Zinc, selenium and manganese plasma levels, activities of Cu-Zn-SOD and GSH-Px in erythrocytes were not statistically different between the two groups. The percentage of zinc plasma levels below the cut off of 10.7 micromol/L was higher in HRT treated group than in untreated one, whereas zinc excretion was reduced. Plasma copper concentrations were higher in women treated by HRT, whereas erythrocyte copper levels were not modified. Plasma chromium concentrations were significantly higher in women receiving HRT and urinary Cr excretion was decreased. The HRT group also exhibited lower losses of urinary zinc and magnesium than untreated women. These data suggest that hormonal replacement therapy provides beneficial effects on trace mineral status related to menopause.
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