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Related Experiment Videos

Thymus-induced recovery of age-related decrease of brain cortex alpha- and beta-adrenoceptors.

G Rossolini1, C Viticchi, A Basso

  • 1Centre of Biochemistry, Gerontol. Res. Department INRCA, Ancona, Italy.

The International Journal of Neuroscience
|July 1, 1991
PubMed
Summary
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The thymus can reverse age-related declines in alpha-1 adrenoceptor density in mouse brains. This finding suggests thymus grafts may restore neurochemical balance during aging.

Area of Science:

  • Neuroscience
  • Immunology
  • Pharmacology

Background:

  • The thymus influences the beta-adrenergic system during aging, correcting beta-adrenoceptor density decrease in aged mice.
  • Previous research indicates the thymus's regulatory role in the aging adrenergic system.

Purpose of the Study:

  • To investigate the thymus's influence on alpha-adrenoceptors in the mouse brain cortex during aging.
  • To determine if thymus grafting can correct age-related alterations in alpha-adrenoceptor density.

Main Methods:

  • Studied alpha-1 and alpha-2 adrenoceptor subtypes separately using different labeled ligands in mouse brain cortex.
  • Administered neonatal thymus grafts to old mice recipients.

Main Results:

Related Experiment Videos

  • Alpha-1 adrenoceptor density significantly decreased in old mice.
  • Alpha-2 adrenoceptor density showed no significant change with aging.
  • Neonatal thymus grafts successfully corrected the age-related decrease in alpha-1 adrenoceptor density.

    • Conclusions:

    • Age-related decline in alpha-1 adrenoceptor density in the mouse brain cortex can be corrected by thymus transplantation.
    • The observed differential impairment of alpha-adrenoceptors mirrors that of beta-adrenoceptors during aging.