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- W4312095130 abstract "Optimal levels of anxiety are critical to memory consolidation, but maladaptive anxiety can disrupt memory acquisition. Serotonergic activity within the amygdala influences both anxiety-like behavior and aversive memory consolidation. To evaluate the effects of serotoninergic manipulations within the basolateral amygdala (BLA) on anxiety-like behavior and aversive memory in rats tested in the plus-maze discriminative avoidance task (PMDAT). The PMDAT investigates aversive memory and anxiety-like behavior simultaneously in rodents. Three-month-old male Wistar rats received bilateral infusions (1 μL per side) of saline, 8-OH-DPAT (5-HT1 agonist; 10 nmol), WAY100135 (5-HT1 antagonist; 0.9 nmol), ketanserine (5-HT 2 antagonist; 10 nmol), or fluoxetine (serotonin reuptake inhibitor; 1.6 nmol) into the BLA and were submitted to PMDAT training session 15 min later. In the test, 24 hr later, animals were re-exposed to the apparatus without the infusion of drugs, and aversive memory was evaluated. (a) 8-OH-DPAT did not affect memory or anxiety, but impaired avoidance behavior toward the aversive arm during training; (b) fluoxetine, WAY100135 and ketanserin impaired memory formation; (c) ketanserin decreased anxiety-like behavior; and (d) none of the treatments induced motor changes. The results showed that an increase in serotonin (5-HT) availability or the blockade of 5HT1A and 5HT2A BLA receptors impaired aversive memory formation. However, only 5HT2A receptor antagonism induced anxiolytic effects. Thus, both memory and anxiety-like behavior can be modified by changes in serotonergic transmission in the basolateral amygdala, but the effects on both phenomena seem to be mediated by different mechanisms related to serotonergic transmission. (PsycInfo Database Record (c) 2023 APA, all rights reserved)." @default.
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- W4312095130 date "2023-04-01" @default.
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- W4312095130 title "Memory and anxiety-like behavior of rats in the plus-maze discriminative avoidance task: Role of serotonergic transmission in the basolateral amygdala." @default.
- W4312095130 doi "https://doi.org/10.1037/bne0000548" @default.
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