Apoptosis/drug effects; Brain/drug effects; Ethanol/antagonists & inhibitors; Glial Cell Line-Derived Neurotrophic Factor/pharmacology; MAP Kinase Signaling System/drug effects; Neuroglia/drug effects; Actin Cytoskeleton/drug effects; Actin Cytoskeleton/metabolism; Alcohol-Induced Disorders, Nervous System/drug therapy; Alcohol-Induced Disorders, Nervous System/metabolism; Alcohol-Induced Disorders, Nervous System/physiopathology; Animals; Apoptosis/physiology; Brain/metabolism; Brain/physiopathology; Cell Line, Tumor; Central Nervous System Depressants/antagonists & inhibitors; Central Nervous System Depressants/toxicity; Cytoprotection/drug effects; Cytoprotection/physiology; Dose-Response Relationship, Drug; Enzyme Inhibitors/pharmacology; Ethanol/toxicity; Glial Cell Line-Derived Neurotrophic Factor/metabolism; JNK Mitogen-Activated Protein Kinases/antagonists & inhibitors; JNK Mitogen-Activated Protein Kinases/metabolism; MAP Kinase Kinase 1/antagonists & inhibitors; MAP Kinase Kinase 1/metabolism; MAP Kinase Signaling System/physiology; Neuroglia/metabolism; Neuroprotective Agents/metabolism; Neuroprotective Agents/pharmacology; Phosphatidylinositol 3-Kinases/metabolism; Phosphoinositide-3 Kinase Inhibitors; Rats