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Catecholamine and cortisol levels during sleep in women with irritable bowel syndrome

 

 

 

 

Neurogastroenterol Motil. 2009 Jul 1. [Epub ahead of print]

 

Catecholamine and cortisol levels during sleep in women with irritable bowel syndrome.

 

Burr RL, Jarrett ME, Cain KC, Jun SE, Heitkemper MM. Department of Biobehavioral Nursing and Health Systems, University of Washington, Seattle, WA, USA.

 

 

Evidence suggests that patients with irritable bowel syndrome (IBS) are hyper-responsive to environmental, physical and visceral stimuli. IBS patients also frequently report poor sleep quality. This study compared serum cortisol and plasma catecholamine levels during sleep between women with IBS (n = 30) and healthy controls (n = 31), and among subgroups within the IBS sample based on predominant stool patterns, IBS-diarrhoea (n = 14), IBS-constipation (n = 7) and IBS-alternators (n = 9). Cortisol was measured from serial blood samples drawn every 20 min, and catecholamines every hour, in a sleep laboratory from 8 pm until awakening. Because of the varied sleep schedules of the individual participants, each subject's hormone series time base was referenced with respect to their onset of Stage 2 sleep. Overall, there were no significant differences in cortisol or catecholamine patterns between women with IBS and controls, nor were there any group by time interactions. However, women with constipation-predominant IBS demonstrated significantly increased noradrenaline, adrenaline and cortisol levels throughout the sleep interval, and women with diarrhoea-predominant IBS were significantly lower on noradrenaline and cortisol. These results suggest that differences in neuroendocrine levels during sleep among IBS predominant bowel pattern subgroups may be greater than differences between IBS women and controls. Neuroendocrine profiles during sleep may contribute to our understanding of symptom expression in IBS.

 

PMID: 19573081 [PubMed - as supplied by publisher]

 

 

 

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