Abstract:
OBJECTIVE:Proinflammatory activity has been suggested as one of the psychophysiological mechanisms responsible for the health risks associated with stress and mood disorders. There have been limited studies evaluating central immune and hypothalamic- pituitary-adrenal (HPA) axis responses to experimental stress in healthy women. The current study compared, under a controlled condition, the baseline measures and biological and psychological responses to a physical stressor (lumbar puncture [LP]) of healthy women who exhibited an abnormal serum cortisol response (nonresponders [NRs]) to the LP to those of normal controls (responders [Rs]), allowing assessment of stress responsivity and the functional integrity of the feedback system of the HPA axis, sympathetic nervous system (SNS), and neuroimmune axis. METHOD:Serum adrenocorticotropic hormone (ACTH), cortisol, interleukin (IL)-6, IL-1sR, and central IL-1β, IL-6, norepineprhine (NE), corticotropin-releasing factor (CRF), and affective states (using the Stress Symptom Rating Questionnaire) were measured in five NRs and seven Rs. RESULTS:Compared with NR subjects, Rs had significantly higher levels of ACTH and central IL-1β, higher ratings of attention, and lower perceived stress and anxiety. There were no differences between the groups in serum cortisol, IL-6, or IL-1sR or in central IL-6, NE, and CRF. CONCLUSIONS:Women with significantly elevated IL-1β (NRs) responded to an extreme physical stressor with an attenuated HPA system and abnormal subjective ratings compared to healthy women with lower values of central IL-1β. These findings support the suppression of the effects of HPA-axis cortisol on proinflammatory cytokine production. It is possible that these differences in the psychoneuroimmunological profiles of NRs will lead to increased psychobiological vulnerability and predict future health risk.
journal_name
Biol Res Nursjournal_title
Biological research for nursingauthors
Fitzgerald Ldoi
10.1177/1099800410383558subject
Has Abstractpub_date
2011-04-01 00:00:00pages
164-74issue
2eissn
1099-8004issn
1552-4175pii
1099800410383558journal_volume
13pub_type
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journal_title:Biological research for nursing
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