النتائج (
العربية) 1:
[نسخ]نسخ!
n the infusion of Ainto the rat brain followed by electrophysiological (Cullenet al. 1996, Freir et al. 2001, Itoh et al. 1999,Trubetskaya et al. 2003) or behavioral analysis (Malinet al. 2001, McDonald et al. 1994, Sweeney et al. 1997).The paper of Cullen et al. showed no effect of A1-40 (0.4or 3.5 nmol in 5 l, equal to the i.v. injection of 5 l of0.8 mg/ml (a very high concentration of A, see above)on the ability to induce LTP in hippocampal slicesin vitro,and the delayed (24 and 48 h after the injection butnot at 75 min after injection) reduction in the NMDA receptor-mediatedresponses recorded in vivo (Cullen etal. 1996). It is important to note that another study concludedthat "NMDA receptor regulation by amyloid-betadoes not account for its inhibition of LTP in rathippocampus" (Raymond et al. 2003). Another article(Freir et al. 2001) investigated the effect of intra-cerebroventricularinjection of A fragments (A15-25, A25-35and reverse sequence A35-25) on synaptic transmissionand LTP in the CA1 region of the hippocampus in vivo.This report (Freir et al. 2001) s
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