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Epidemiologic studies show that smokers with a past history of depression are more likely to relapse into depression after smoking cessation than those without a history of depression. These studies suggest the existence of a direct biological link between nicotine withdrawal and depression. To investigate the neuronal and hormonal mechanisms of the precipitation of depression during smoking cessation,...
OPC-14597 is a new antipsychotic drug with a unique pharmacological profile. In a behavioural study in rats OPC-14597 did not show cataleptogenic activity even at the highest dose (40 mg/kg, i.p.), whereas it antagonized apomorphine-induced stereotypy dose-dependently (0.5-40 mg/kg). In vivo microdialysis showed that extracellular dopamine (DA) in the striatum was decreased significantly after OPC-14597...
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