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 play important role in goitro-and carcinogenesis of gland. The variation with age of the mass fraction of six trace elements (Br, Cu, Fe, Rb, Sr, and Zn) in intact (normal) thyroid of 33 females (mean age 54.5 years, range 3.5-87) was investigated by109 Cd radionuclide-induced energy dispersive X-ray fluorescent analysis.
Highlights
The endocrine organs, including the thyroid gland, undergo important functional changes during aging and a prevalence of thyroid dysfunction is higher in the elderly as compared to the younger population [1,2]
None of the subjects had a history of an intersex condition, endocrine disorder, or other chronic disease that could affect the normal development of the thyroid
One tissue portion was reviewed by an anatomical pathologist while the other was used for the trace element content determination
Summary
The endocrine organs, including the thyroid gland, undergo important functional changes during aging and a prevalence of thyroid dysfunction is higher in the elderly as compared to the younger population [1,2]. The prevalence of thyroid nodules is increased in the elderly, reaching a frequency of nearly 50% by the age of 65 [4]. Both prevalence and aggressiveness of thyroid cancer increase with age [2]. Aging, considered as an impairment of body functions over time, caused by the accumulation of molecular damage in DNA, proteins and lipids, is characterized by an increase in intracellular oxidative stress due to the progressive de-
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