Rheumatology Advance Access originally published online on April 6, 2005
Rheumatology 2005 44(7):907-911; doi:10.1093/rheumatology/keh626
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Neuroendocrine–immune relationships between emotion regulation and health in patients with rheumatoid arthritis
Department of Health Psychology, Utrecht University and 1 Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands.
Correspondence to: H. van Middendorp, Department of Health Psychology, Utrecht University, PO Box 80140, 3508 TC Utrecht, The Netherlands. E-mail: H.vanMiddendorp{at}fss.uu.nl
| Abstract |
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Objectives. Emotion regulation is hypothesized to be related to health through neuroendocrine–immune changes. This study examined the role of the neuroendocrine variables 24-h urinary cortisol and noradrenaline, and the immune variable serum interleukin 6 as mediators between emotion regulation styles and health (perceived health and disease activity: erythrocyte sedimentation rate (ESR) and Thompson joint score).
Methods. Sixty patients with rheumatoid arthritis (mean age 59.0±11.2 yr; 38 female) participated.
Results. Emotion regulation was not associated with immune functioning or disease activity, but it was somewhat related to neuroendocrine functioning: one of the emotion regulation styles, ambiguity, was related to noradrenaline in women (r = 0.39) but not in men. The indicators of neuroendocrine functioning (cortisol and noradrenaline) were correlated (r = 0.40), as were indicators of immune functioning (interleukin 6) and inflammatory activity (ESR; r = 0.53), but analyses did not indicate a role of these physiological variables in mediating between emotion regulation and health: neuroendocrine variables were not related to interleukin 6 or ESR, and none of the physiological parameters was correlated with joint score or perceived health.
Conclusions. To examine whether the proposed mediational processes apply to individual patients, a longitudinal within-subjects design is needed. In our cross-sectional study, emotion regulation was somewhat related to neuroendocrine functioning, but our study did not uncover a potential mediational role of cortisol, noradrenaline or interleukin 6 in the relationship between emotion regulation and health in rheumatoid arthritis.
KEY WORDS: Emotions, Psychological adaptation, Alexithymia, Stress, Erythrocyte sedimentation rate, Interleukin-6, Noradrenaline, Cortisol, Psychoneuroimmunology, Rheumatoid arthritis
Submitted 20 December 2004;
revised version accepted 25 February 2005.
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