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“School of Cognitive Sciences”

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Paper   IPM / Cognitive Sciences / 14212
School of Cognitive Sciences
  Title:   The effect of BLA GABA(A) receptors in anxiolytic-like effect and aversive memory deficit induced by ACPA
1.  K. Kangarlu-Haghighi
2.  S. Oryan
3.  M. Nasehi
4.  M.R. Zarrindast
  Status:   Published
  Journal: EXCLI
  Vol.:  14
  Year:  2015
  Pages:   613-626
  Supported by:  IPM
The roles of GABAergic receptors of the Basolateral amygdala (BLA) in the cannabinoid CB1 receptor agonist (arachydonilcyclopropylamide; ACPA)-induced anxiolytic-like effect and aversive memory deficit in adult male mice were examined in elevated plus-maze task. Results showed that pre-test intra-peritoneal injection of ACPA induced anxiolytic-like effect (at dose of 0.05 mg/kg) and aversive memory deficit (at doses of 0.025 and 0.05 mg/kg). The results revealed that Pre-test intra-BLA infusion of muscimol (GABAA receptor agonist; at doses of 0.1 and 0.2 µg/mouse) or bicuculline (GABAA receptor antagonist; at all doses) impaired and did not alter aversive memory, respectively. All previous GABA agents did not have any effects on anxiety-like behaviors. Interestingly, pretreatment with a sub-threshold dose of muscimol (0.025 µg/mouse) and bicuculline (0.025 µg/mouse) did not alter anxiolytic-like behaviors induced by ACPA, while both drugs restored ACPA-induced amnesia. Moreover, muscimol or bicuculline increased and decreased ACPA-induced locomotor activity, respectively. Finally the data may indicate that BLA GABAA receptors have critical and different roles in anxiolytic-like effect, aversive memory deficit and locomotor activity induced by ACPA.

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