期刊
NEUROCRITICAL CARE
卷 13, 期 2, 页码 211-216出版社
HUMANA PRESS INC
DOI: 10.1007/s12028-010-9399-1
关键词
Traumatic brain injury; Cortisol; Brain interstitial cortisol; Microdialysis; Circadian rhythm
资金
- Spanish government: Fondo de Investigacion Sanitaria [FIS PI070307]
Traumatic brain injury (TBI) is commonly associated with disturbances of the hypothalamic-pituitary-adrenal axis secretion. Cerebral microdialysis techniques have been recently applied to measure brain interstitial cortisol levels. We evaluated for the first time the circadian rhythm of cortisol secretion at 08:00, 16:00, and 24:00 h in the acute phase of TBI by determination of total serum and brain interstitial cortisol levels (microdialysis samples) in 10 patients with TBI. Non-parametric Friedman's two way analysis of variance test was used. Mean age was 29.8 +/- A 13.6 years. Median Glasgow Coma Scale score after resuscitation was 5 (range 3-10). No differences were found in total serum (P = 0.26) and brain interstitial cortisol (P = 0.77) in the whole sample. Intraindividual analysis showed that circadian variability was lost in all patients, both in serum and brain interstitial cortisol samples in the acute phase after TBI. In our series, circadian variability of cortisol evaluated by serum and cerebral microdialysis samples seems to be lost in TBI patients.
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