Background and Purpose Abnormalities of hypothalamopituitary-adrenocortical axis function have been observed frequently in stroke patients. The aim of this study was to investigate plasma /S-endorphin and cortisol 24-hour secretory patterns in patients early after stroke and in the convalescent period to evaluate a possible influence of brain damage on hormonal circadian pattern.Methods Patients (n=15; age, 46 to 75 years) were evaluated in the first 24 hours and 10 days after hospital admission for ischemic cerebral stroke and compared with 15 age-and sex-matched normal subjects. Blood samples for /3-endorphin and cortisol determination were drawn every 4 hours from 8 AM to 8 PM and every 2 hours from midnight to 6 AM.Results Mean 24-hour /J-endorphin and cortisol levels, recorded in the acute phase, were significantly (P<.05) higher
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