Alkaloids/therapeutic use; Antioxidants/therapeutic use; Benzodioxoles/therapeutic use; Curcumin/therapeutic use; Huntington Disease/drug therapy; Neuroprotective Agents/therapeutic use; Piperidines/therapeutic use; Polyunsaturated Alkamides/therapeutic use; Adenosine/metabolism; Alkaloids/pharmacology; Animals; Antioxidants/pharmacology; Benzodioxoles/pharmacology; Brain/drug effects; Brain/metabolism; Catecholamines/metabolism; Curcumin/pharmacology; Cytokines/metabolism; Drug Therapy, Combination; Glutamic Acid/metabolism; Glutathione/metabolism; Hand Strength; Huntington Disease/chemically induced; Huntington Disease/metabolism; Lipid Peroxidation/drug effects; Locomotion/drug effects; Neuroprotective Agents/pharmacology; Nitrites/metabolism; Piperidines/pharmacology; Polyunsaturated Alkamides/pharmacology; Quinolinic Acid; Rats, Wistar; gamma-Aminobutyric Acid/metabolism