Journal
COMPREHENSIVE PHYSIOLOGY
Volume 6, Issue 1, Pages 87-110Publisher
WILEY
DOI: 10.1002/cphy.c140027
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- Agency of Science, Technology, and Research (A*STAR), Singapore
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The hypothalamic-pituitary-adrenal axis provides physiological adaptations to various environmental stimuli in mammals. These stimuli including maternal care, diet, immune challenge, stress, and others have the potential to stably modify or program the functioning of the HPA axis when experienced early in life or at later critical stages of development. Epigenetic mechanisms mediate the biological embedding of environmental stimuli or conditions. These changes are influenced by the genotype and both, environment and genotype contribute to the development of a specific phenotype with regard to the stress response that might be more susceptible or resilient to the development of mental conditions. The effects of stress might be a result of cumulative stress or a mismatch between the environments experienced early in life versus the conditions much later. These effects including the associated epigenetic modifications are potentially reversible. (C) 2016 American Physiological Society.
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