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- W2900532726 endingPage "64" @default.
- W2900532726 startingPage "50" @default.
- W2900532726 abstract "The neuropeptide oxytocin (OXT) plays a critical role in the regulation of social and emotional behaviors. OXT plays a role in stress response and in drug reward, but to date no studies have evaluated its implication in the long-lasting increase of the motivational effects of cocaine induced by repeated social defeat (RSD). During the social defeat procedure, 1 mg/kg of OXT was administered 30 min before each episode of RSD. Three weeks after the last defeat, the effects of cocaine on the conditioned place preference (CPP), locomotor sensitization and the self-administration (SA) paradigms were evaluated. The influence of OXT on the levels of BDNF in the prefrontal cortex (PFC), striatum and hippocampus was also measured. Our results confirm that raising the levels of OXT during social defeat stress can block the long-lasting effects of this type of stress. OXT counteracts the anxiety induced by social defeat and modifies BDNF levels in all the structures we have studied. Moreover, OXT prevents RSD-induced increases in the motivational effects of cocaine. Administration of OXT before each social defeat blocked the social defeat-induced increment in the conditioned rewarding effects of cocaine in the CPP, favored the extinction of cocaine-associated memories in both the CPP and SA, and decreased reinstatement of cocaine-seeking behavior in the SA. In conclusion, the long-lasting effects of RSD are counteracted by administering OXT prior to stress, and changes in BDNF expression may underlie these protective effects." @default.
- W2900532726 created "2018-11-29" @default.
- W2900532726 creator A5006068664 @default.
- W2900532726 creator A5026510420 @default.
- W2900532726 creator A5029010793 @default.
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- W2900532726 creator A5072251228 @default.
- W2900532726 creator A5073236579 @default.
- W2900532726 creator A5088955793 @default.
- W2900532726 date "2019-03-01" @default.
- W2900532726 modified "2023-10-18" @default.
- W2900532726 title "Oxytocin prevents the increase of cocaine-related responses produced by social defeat" @default.
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