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Astrocytic volume fluctuates in the hippocampal CA1 region across the estrous cycle
A Klintsova1, W B Levy, N L Desmond
1Department of Neurological Surgery, University of Virginia, Charlottesville 22908, USA.
Brain Research
|September 4, 1995
Abstract:
The number of dendritic spine synapses in the hippocampal CA1 stratum radiatum fluctuates across the rat estrous cycle, being high on proestrus and low on estrus [20]. We hypothesized that the volume occupied by astrocytic processes changes in a complementary manner. The volume fraction of astrocytic processes was determined stereologically in CA1 s. radiatum and s. lacunosum-moleculare of cycling female rats. Consistent with our hypothesis, the volume fraction was significantly lower on the afternoon of proestrus than on the afternoon of estrus in both laminae.