Plasma Beta-Endorphin, Adrenocorticotropic Hormone and Cortisol Change in Alcohol Abstinent Patients

Lee, Dong Geun; Na, Chul; Sohn, In Ki

Abstract

OBJECTIVES
The present study was performed to evaluate the change in releasing action of hypothalamus-pituitary-adrenal axis after alcohol abstinence in patients with alcohol dependence, and to identify the etiologic mechanism of alcohol dependence indirectly.
METHODS
Plasma beta-endorphin, cortisol and ACTH level was measured in 14 alcohol dependent patients and in 14 healthy persons after 7 days and 28 days of alcohol abstinence at 08: 00h and 12: 00h, twice a day.
RESULTS
1) There was no significant difference in plasma beta-endorphin, cortisol and ACTH level measured at 08: 00h and 12: 00h between patients and control group after 7days of alcohol withdrawal. 2) Plasma beta-endorphin level measured at 08: 00h in patients was significantly elevated comparing with control group after 28days of alcohol withdrawal. But, there was no significant difference in plasma beta-endorphin level measured at 12: 00h and in plasma cortisol and ACTH level measured at both 08: 00h and 12: 00h between two groups after 28days of alcohol withdrawal. 3) In the patient group, there was no significant difference between patients after 7days and 28 days of alcohol withdrawal in plasma beta-endorphin, cortisol and ACTH level measured at 08: 00h and ACTH level measured at 12: 00h. But, beta-endorphin and cortisol level measured at 12: 00h were significantly lowered in patients after 28days of alcohol withdrawal than after 7days of withdrawal. 4) In decreasing rate of beta-endorphin production from 08: 00h to 12: 00h, there was significant difference between patients and controlled group after 28days of alcohol withdrawal.
CONCLUSION
In alcohol dependent patients, lower level of beta-endorphin and increased reducing rate in diurnal variation of beta-endorphin after alcohol withdrawal are evident, which in turn may elevate craving for alcohol intake, and there findings support the opioid compensation theory in the development of alcohol dependence.