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There is conflicting evidence regarding the issue of whether NMDA receptors in the basolateral amygdalar complex (BLA) are critically involved in the expression of conditioned fear. This matter was addressed by infusing the rat BLA with d,l-2-amino-5-phosphonovaleric acid (APV), a competitive NMDA receptor antagonist. APV infusion into the BLA was reported(More)
A tone conditioned stimulus (CS) previously paired with a grid shock unconditioned stimulus (US) can greatly enhance the early electromyographic (EMG) component (R1) of the rat eyeblink reflex. The hypothesis that the central nucleus of the amygdala (ACe) is an essential part of the circuitry mediating conditioned R1 enhancement was tested. After bilateral(More)
The matricellular protein CCN1 (CYR61) is known to function in wound healing and is upregulated in colons of patients with Crohn's disease and ulcerative colitis, yet its specific role in colitis is unknown. Here we have used Ccn1(dm/dm) knockin mice expressing a CCN1 mutant unable to bind integrins α6β1 and αMβ2 as a model to probe CCN1 function in dextran(More)
Abstract Mutations of the cardiac transcription factor NKX2-5 cause hypoplastic development of the AV node and conduction block. How the anatomy of the mutant AV node relates to its function is unknown. We thus studied conduction through the AV nodal region in ex vivo preparations of wild-type and Nkx2-5(+/-) mouse hearts in which the central conduction(More)
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