Fig. 6. SR-8993 impairs cued-fear memory when infused in the central amygdala and in a PTSD-like mouse model.
(A) SR-8993 bilaterally injected into the central amygdala immediately after fear conditioning causes impaired fear memory consolidation as shown by the degree of freezing in the cued-fear expression test (*P < 0.05, two-tailed Student’s t test; n = 6 mice per group). (B) Histological verification of SR-8993 infusion sites. The dots indicate the lowest point of the injector tip. Bregma is the anatomical point on the skull at which the coronal suture is intersected perpendicularly by the sagittal suture used as a reference point. (C) Systemic SR-8993 given immediately after fear conditioning in mice with a previous IMO exposure impaired fear memory consolidation as determined by reduced freezing in the fear expression test (*P < 0.05, two-tailed Student’s t test; n = 8 mice per group).