Age-Related Changes of Ag, Co, Cr, Fe, Hg, Rb, Sb, Sc, Se, and Zn Contents in Intact Thyroid of Males Investigated by Neutron Activation Analysis

Vladimir Zaichick and Sofia Zaichick
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Vladimir Zaichick: Radionuclide Diagnostics Department, Medical Radiological Research Centre, Russia
Sofia Zaichick: Laboratory of Dr. Gabriela Caraveo Piso, Feinberg School of Medicine, Northwestern University, USA

Current Trends in Biomedical Engineering & Biosciences, 2017, vol. 4, issue 4, 64-72

Abstract: A prevalence of thyroid dysfunction is higher in the elderly as compared to the younger population. An excess or deficiency of trace element contents in thyroid plays important role ingoitro- and carcinogenesis of gland. The variation with age of the mass fraction of ten trace elements (Ag, Co, Cr, Fe, Hg, Rb, Sb, Sc, Se, and Zn) in intact (normal) thyroid of 62 males (mean age 35.9 years, range 2-80) was investigated by instrumental neutron activation analysis with high resolution spectrometry of long-lived radio nuclides. Mean values± standard error of mean for mass fractions (mg/kg, on dry-mass basis) of the trace elements studied were: Ag0.0156±0.0021, Co0.0352±0.0031, Cr0.520±0.041, Fe 222±12, Hg0.0461±0.0053, Rb 7.89 0.58, Sb 0.108±0.010, Sc 0.0051±0.0012, Se 2.36±0.17, and Zn103±5.5. This work revealed that there is a significant tendency for an increase in Se mass fraction in normal male thyroid during a lifespan.Therefore, a goitrogenic and carcinogenic effect of inadequate Se level in the thyroid of old males and a harmful effect of disturbance in intra thyroidal trace element relationships with increasing age may be assumed.

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Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:adp:jctbeb:v:4:y:2017:i:4:p:64-72

DOI: 10.19080/CTBEB.2017.04.555644

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