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Related Experiment Videos

Antioxidant status (selenium, vitamins A and E) and aging.

M Simonoff1, C Sergeant, N Garnier

  • 1Centre d'Etudes Nucléaires de Bordeaux-Gradignan URA 451 du CNRS, France.

EXS
|January 1, 1992
PubMed
Summary
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This study found that elderly individuals often have selenium deficiency, impacting antioxidant status. Selenium supplementation improved levels, highlighting its importance for aging populations.

Area of Science:

  • Gerontology
  • Nutritional Science
  • Biochemistry

Background:

  • Antioxidant status is crucial for health and can be assessed through blood levels of selenium and vitamins A and E.
  • Aging is associated with altered nutritional requirements and potential deficiencies impacting health outcomes.
  • Previous research suggests a link between aging, nutrition, immune function, and mortality rates.

Purpose of the Study:

  • To evaluate the antioxidant status in elderly French individuals (70-95 years old) by measuring blood selenium and vitamin levels.
  • To compare antioxidant levels in healthy elderly subjects with those who are ill and with younger populations.
  • To investigate the effect of selenium supplementation on antioxidant status in elderly individuals residing in a geriatric home.

Main Methods:

Related Experiment Videos

  • Proton-induced X-ray emission (PIXE) analysis was used to determine selenium levels in whole blood, erythrocytes, and plasma.
  • High-performance liquid chromatography (HPLC) was employed to measure plasma levels of vitamins A and E.
  • Data were compared with literature values and results from younger subjects.

Main Results:

  • Selenium levels were measured in 170 elderly French individuals, differentiating between healthy subjects and those with intercurrent illnesses.
  • Plasma vitamin A and E levels were assessed and compared to younger populations.
  • Selenium supplementation for one month in a geriatric home setting revealed a deficiency in this essential trace element.

Conclusions:

  • Elderly individuals, particularly those in geriatric settings, may experience selenium deficiency.
  • Maintaining adequate antioxidant status through nutrient intake is vital for supporting immune function and potentially reducing mortality risk in aging populations.
  • Further research is warranted to understand the long-term implications of selenium status on health outcomes in the elderly.