Hair Trace Elements and Pregnancy

02 february 2021, 15:51

Part 2

 

Mineral Content of Hair and Teeth Reveal Environmental Pollution

 

An epidemiological survey was performed in environmental areas of pollution and non-polluted areas of Tbilisi. The study included five hundred children. They found the prevalence of dental caries was higher in children living in polluted regions than those living in less polluted regions. Hair and dental tests showed higher levels of lead, mercury and tin in tissues obtained from groups living in polluted areas. Therefore, hair and dental material can be used as indicators of environmental pollution. Shishniashvili, TE, et al. Primary Teeth and Hair as Indicators of Environmental Pollution.J. Clin. Pediatr. Dent. 40,2, 2016.

 

Hair Selenium in Children with Cancer

 

Low serum selenium has been found in pediatric and adult patients with cancers. Since hair selenium concentrations has been reported in adults with cancer this study was implemented to determine the hair selenium status in children with newly diagnosed lymphoid malignancies and the relation between malnutrition and selenium deficiency. The study included thirty patients with leukemia, and lymphoma and twenty five healthy controls. The hair selenium levels were found to be significantly lower in the cancer group. In conclusion, it was found that the hair selenium levels of children with leukemia and lymphoma, particularly in those that were malnourished were low compared to the healthy group. Ozgen, IT, et al. Hair Selenium status in children with leukemia and lymphoma. J. Pediatr Hematol Oncol. 29,8, 2007.

 

 

Hair Selenium and Mercury levels in children with Night Blindness

 

Night blindness in children have multiple factors but in particular attention should be aimed toward childhood nutritional deficiencies. Nutritional deficiencies can result in both physiological and pathological process which in turn can influence biological composition. This study design compared the levels of selenium and mercury in the hair, blood and urine of children with night blindness including both genders in ages 3 to 7 and 8 to 12 years with age and sex matched control group of children without night blindness. Results found the concentration of selenium was lower in scalp hair and blood samples of male and female children with night blindness. Mercury was higher in hair, blood and urine compared to controls. The authors concluded that the data obtained from this study can provide guidance to clinicians and other professionals investigating deficiency of essential trace elements and excess toxic elements in children with night blindness. Afridi, HI, et al. Assessment of selenium and mercury in biological samples of normal and night blindness children of age groups (3-7) and (8-12). Environ.

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