Title : Reduced hippocampal in vitro CA1 long-term potentiation in rat offsprings with increased circulating corticosterone during neonatal life.

Pub. Date : 1996 Oct 25

PMID : 8939483






5 Functional Relationships(s)
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1 Reduced hippocampal in vitro CA1 long-term potentiation in rat offsprings with increased circulating corticosterone during neonatal life. Corticosterone carbonic anhydrase 1 Rattus norvegicus
2 A significant (P < 0.01) reduction in the magnitude of the long-term potentiation (LTP) of the CA1 population spike occurred in hippocampal slices obtained from 30-45 day old male corticosterone-nursed rats with respect to controls, while no significant difference occurred in the magnitude of the basal CA1 evoked extracellular somatic field potentials with respect to controls. Corticosterone carbonic anhydrase 1 Rattus norvegicus
3 A significant (P < 0.01) reduction in the magnitude of the long-term potentiation (LTP) of the CA1 population spike occurred in hippocampal slices obtained from 30-45 day old male corticosterone-nursed rats with respect to controls, while no significant difference occurred in the magnitude of the basal CA1 evoked extracellular somatic field potentials with respect to controls. Corticosterone carbonic anhydrase 1 Rattus norvegicus
4 The results demonstrate that a moderate increase in plasma corticosterone during neonatal life, obtained through maternal milk, has long-lasting effects on the hippocampal CA1 synaptic plasticity. Corticosterone carbonic anhydrase 1 Rattus norvegicus
5 In addition, these results together with our previous findings [Catalani, A. et al., Brain Res., 624 (1993) 209-215], demonstrating that 30 day old corticosterone-nursed offsprings perform better than controls in the place learning version of the Morris water maze, show no relationships between in vitro CA1 LTP induction and spatial learning in agreement with literature data. Corticosterone carbonic anhydrase 1 Rattus norvegicus