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The opioid system modulates the central reinforcing effects of ethanol and participates in the etiology of addiction. However, the pharmacotherapy of ethanol dependence targeted on the opioid system is little effective and varies due to individual patients' sensitivity. In the present study, we used two mouse lines with high (HA) and low (LA) activity of the endogenous opioid system to analyze the...
Considering the involvement of the opioid system in alcoholism, depression and metabolism - known risk factors in human obesity, we studied the effects of chronic mild stress (CMS) and alcohol intake on body weight in two mouse lines selected for high (HA-high analgesia) or low (LA-low analgesia) swim stress-induced analgesia. In comparison to LA mice, HA mice exhibit an upregulation of opioid receptor...
Alcoholism is a complex disorder, still not fully understood, in which environmental and inherited risk factors play essential roles. Of particular importance may be chronic exposure to stress thought to increase preference for ethanol in genetically susceptible individuals. Animal and human data suggest that the opioid system may be involved in the development of alcohol dependence. We studied the...
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