Abstract
Background
The assessment of acculturative stress as synonymous with acculturation level overlooks the dynamic, interactive, and developmental nature of the acculturation process. An individual’s unique perception and response to a range of stressors at each stage of the dynamic process of acculturation may be associated with stress-induced alterations in important biological response systems that mediate health outcomes. Evidence suggests the cortisol awakening response (CAR) is a promising pre-clinical biomarker of stress exposure that may link acculturative stress to self-reported health in Mexican Americans.
Purpose
The aim of the current study was to examine whether alterations in the CAR mediate the relationship between acculturative stress and self-reported health in Mexican Americans.
Methods
Salivary cortisol samples were collected at awakening, 30, 45, and 60 min thereafter, on two consecutive weekdays from a sample of adult Mexican Americans. Acculturative stress and self-reported health were assessed. Data were aggregated and analyzed (n = 89) using a mixed effects regression model and path analysis.
Results
Poorer self-reported health was associated with attenuated CAR profiles (primarily due to a diminished post-awakening rise in cortisol) predicted by both moderate and high levels of exposure to acculturative stress. Stress-induced alterations in the CAR mediated the relationship between exposure to acculturative stressors and self-reported health.
Conclusions
Findings demonstrate that different levels of acculturative stress are associated with distinct CAR profiles and suggest the CAR is one possible biological pathway through which exposure to culturally unique stressors may be linked to health disparities.
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Acknowledgements
The authors are grateful for support from the San Antonio Life Sciences Institute and a fellowship (AFG) from the National Institutes of Health (NIGMS-RISE GM060655).
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All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and /or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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The authors are grateful to the San Antonio Life Sciences Institute, for their support of this research.
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Informed consent was obtained from all individual participants included in the study (see statement regarding consent in the first paragraph of the manuscript under the section entitled, “Results”).
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Authors Garcia, Wilborn, and Mangold declare that they have no conflict of interest. All procedures, including the informed consent process, were conducted in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000.
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Garcia, A.F., Wilborn, K. & Mangold, D.L. The Cortisol Awakening Response Mediates the Relationship Between Acculturative Stress and Self-Reported Health in Mexican Americans. ann. behav. med. 51, 787–798 (2017). https://doi.org/10.1007/s12160-017-9901-5
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DOI: https://doi.org/10.1007/s12160-017-9901-5