Vaccine-induced inflammation attenuates the vascular responses to mental stress

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Inflammation is associated with poorer vascular function, with evidence to suggest that inflammation can also impair the vascular responses to mental stress. This study examined the effects of vaccine-induced inflammation on vascular responses to mental stress in healthy participants. Eighteen male participants completed two stress sessions: an inflammation condition having received a typhoid vaccination and a control (non-inflamed) condition. Tumor necrosis factor-alpha and interleukin-6 (p's<.001) increased following vaccination, confirming modest increases in inflammation. Mental stress increased blood flow, blood pressure, heart rate, and cardiac output in both conditions (all p's<.001), but the blood flow response to stress was attenuated having received the vaccination compared to the control condition (p's<.05). These results further implicate the interaction between inflammation and the vasculature as a mechanism through which stress may trigger myocardial infarction.

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Copyright © 2014 Elsevier B.V. All rights reserved.


Original languageEnglish
Pages (from-to)340-8
Number of pages9
JournalInternational journal of psychophysiology : official journal of the International Organization of Psychophysiology
Issue number3
Publication statusPublished - Sep 2014