Patterns of poverty across adolescence predict salivary cortisol stress responses in Mexican-origin youths

PSYCHONEUROENDOCRINOLOGY

卷:132

Article

Johnson, Lisa E.^1,2  Parra, Luis A.^3,4  Ugarte, Elisa^2,3  Weissman, David G.⁵  Han, Sasha G.⁶  Robins, Richard W.¹  Guyer, Amanda E.^2,3  Hastings, Paul D.^1,2 

[1] Univ Calif Davis, Dept Psychol, Davis, CA 95616 USA

[2] Univ Calif Davis, Ctr Mind & Brain, 202 Cousteau Pl, Davis, CA 95618 USA

[3] Univ Calif Davis, Dept Human Ecol, Davis, CA 95616 USA

[4] Univ Southern Calif, Suzanne Dworak Peck Sch Social Work, Los Angeles, CA 90007 USA

[5] Harvard Univ, Dept Psychol, Cambridge, MA 02138 USA

[6] St Bonaventure Univ, Dept Psychol, St Bonaventure, NY 14778 USA

关键词: Chronic poverty;    Income change;    Mexican-origin adolescents;    HPA axis;    Salivary cortisol;   

DOI  :  10.1016/j.psyneuen.2021.105340

来源: Elsevier

【 摘 要 】

Poverty is a chronic stressor associated with disruptions in psychophysiological development during adolescence. This study examined associations of chronic poverty and income changes experienced from pre- to midadolescence with hypothalamic-pituitary-adrenal (HPA) axis stress responses in late adolescence. Participants (N = 229) were adolescents of Mexican-origin (48.7% female). Household income (converted to income-to-needs ratios) was assessed annually when children were 10-16 years old. At 17 years, adolescents completed Cyberball, a social exclusion simulation task while undergoing a functional magnetic resonance imaging scan. Saliva samples were collected prior to and five times over a 50-minute period following the scan, from which salivary cortisol was assayed. Results showed that differential trajectories of poverty from ages 10-16 predicted HPA axis activity at age 17. Relative to others, distinct HPA suppression (hyporeactivity) was demonstrated by youth who started adolescence in deep poverty and were still living in poverty at age 16 despite experiencing some income gains. Youth from more economically secure families evinced typical cortisol increases following the lab stressor. These results suggest that subsequent HPA functioning varies as a function of economic status throughout adolescence, and that efforts to increase family income may promote healthy HPA functioning for youths in the most impoverished circumstances.

【 授权许可】

Free