Vitamin E deficiency as a model of precocious brain aging: Assessment by X-ray microanalysis and morphometry

C. Bertoni-Freddari, P. Fattoretti, U. Caselli, R. Paoloni, W. Meier-Ruge, J. Miquel, G. M. Roomans, T. Von Zglinicki

Research output: Contribution to journalArticlepeer-review

Abstract

Vitamin E (α-tocopherol) is a known biological anti-oxidant able to quench the lipid peroxidation chain and to protect the cellular structures (e.g., plasma membranes) from the attack of free radicals which are reported to play a primary role in aging. To assess whether the absence of α- tocopherol from the diet of young laboratory animals may be considered a reliable model of precocious brain aging, intracellular ionic content of brain cortex pyramidal cells, ultrastructural features of synaptic contact zones, synaptic mitochondria and perykarial mitochondria positive to the succinic dehydrogenase (SDH) histochemical reaction with copper ferrocyanida have been investigated by X-ray microanalysis and computer-assisted morphometry in young, adult, old and 11-month-old vitamin E deficient rats. Our data document significant alterations of intracellular ionic content, synaptic contact areas and synaptic and perykarial mitochondria in aging. Vitamin E deficiency caused similar alterations in adult animals. Taking into account the known role of α-tocopherol in protecting the cellular membrane structure, we support that the common process underlying the changes found in aging and vitamin E deficiency is an excessive deterioration of the neuronal membrane.

Original languageEnglish
Pages (from-to)289-302
Number of pages14
JournalScanning Microscopy
Volume9
Issue number1
Publication statusPublished - 1995

Keywords

  • aging of synaptic membranes
  • brain aging
  • free radicals and aging
  • mitochondrial aging
  • morphometry
  • perykarial mitochondria
  • succinic dehydrogenase activity
  • synaptic mitochondria
  • vitamin E deficiency
  • X-ray microanalysis

ASJC Scopus subject areas

  • Instrumentation

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