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Age-related changes in neuroendocrine rhythmic function in the rhesus macaque
Henryk F Urbanski1, Krystina G Sorwell
1Division of Neuroscience, Oregon National Primate Research Center, 505 NW 185th Avenue, Beaverton, OR 97006, USA. urbanski@ohsu.edu
Age (Dordrecht, Netherlands)
|December 27, 2011
Summary
Aging disrupts neuroendocrine rhythms, affecting hormone levels and signaling. Rhesus macaques offer a model to study these circadian changes and develop therapies for age-related conditions.
Area of Science:
- Chronobiology
- Neuroendocrinology
- Primate Aging Research
Background:
- Environmental cycles (light, temperature, food) drive biological rhythms.
- Mammalian circadian systems synchronize internal processes via photoreception, suprachiasmatic nucleus (SCN) pacemakers, and neuroendocrine signaling.
- Disrupted circadian rhythms, particularly neuroendocrine ones, are implicated in age-related diseases.
Purpose of the Study:
- To review age-associated changes in primate neuroendocrine rhythms.
- To highlight alterations in hormone levels, signaling, and receptor function during aging.
- To emphasize the utility of male rhesus macaques as a translational model for aging research.
Main Methods:
- Review of existing literature on aging and circadian rhythms in primates.
- Focus on data from male rhesus macaques (Macaca mulatta).
- Analysis of neuroendocrine changes, including hormone levels, signaling pathways, and intracrine processing.
Main Results:
- Aging leads to reduced hormone levels and attenuated humoral circadian signaling in primates.
- Significant age-related changes occur in intracrine processing enzymes and hormone receptors.
- Rhesus macaques exhibit physiological and behavioral circadian changes similar to humans during aging.
Conclusions:
- Perturbation of neuroendocrine rhythms contributes to age-related pathologies.
- Rhesus macaques serve as an excellent model for studying age-associated circadian disruption.
- This model can be used to evaluate potential therapeutic interventions for aging-related circadian dysfunction.
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