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Journal of Neuroscience, Vol 10, 1286-1291, Copyright © 1990 by Society for Neuroscience
Gonadal steroids regulate dendritic spine density in hippocampal pyramidal cells in adulthood
E Gould, CS Woolley, M Frankfurt and BS McEwen
Laboratory of Neuroendocrinology, Rockefeller University, New York, New York 10021.
Gonadal steroids are known to influence hippocampal physiology in
adulthood. It is presently unknown whether gonadal steroids influence the
morphology of hippocampal neurons in the adult intact rat brain. In order
to determine whether female sex hormones influence hippocampal morphology
in the intact adult, we performed Golgi impregnation on brains from
ovariectomized rats and ovariectomized rats which received estradiol or
estradiol and progesterone replacement. Removal of circulating gonadal
steroids by ovariectomy of adult female rats resulted in a profound
decrease in dendritic spine density in CA1 pyramidal cells of the
hippocampus. Estradiol replacement prevented the observed decrease in
dendritic spine density; progesterone augmented the effect of estradiol
within a short time period (5 hr). Ovariectomy or gonadal steroid
replacement did not affect spine density of CA3 pyramidal cells or granule
cells of the dentate gyrus. These results demonstrate that gonadal steroids
are necessary for the maintenance of normal adult CA1 hippocampal pyramidal
cell structure. The short time course required to observe these effects (3
d for the estradiol effect and 5 hr for the progesterone effect) implies
that CA1 pyramidal cell dendritic spine density may fluctuate during the
normal (4-5 d) rat estrous cycle.
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March 15, 2003;
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V. Znamensky, K. T. Akama, B. S. McEwen, and T. A. Milner
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March 15, 2003;
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[Abstract]
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C. Leranth, O. Petnehazy, and N. J. MacLusky
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March 1, 2003;
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C. N. Rudick and C. S. Woolley
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Endocrinology,
January 1, 2003;
144(1):
179 - 187.
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D. Tsay and R. Yuste
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November 1, 2002;
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2834 - 2845.
[Abstract]
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T. J. Shors and G. Miesegaes
Testosterone in utero and at birth dictates how stressful experience will affect learning in adulthood
PNAS,
October 15, 2002;
99(21):
13955 - 13960.
[Abstract]
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H. F. Figueiredo, C. M. Dolgas, and J. P. Herman
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Endocrinology,
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2534 - 2540.
[Abstract]
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L. Wang, S. Andersson, M. Warner, and J.-A. Gustafsson
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2002(138):
pe29 - pe29.
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B. McEwen
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272 - 278.
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C. N. Rudick and C. S. Woolley
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J. Neurosci.,
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6532 - 6543.
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6221 - 6232.
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August 15, 2001;
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6292 - 6297.
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M. M. Adams, R. A. Shah, W. G. M. Janssen, and J. H. Morrison
Different modes of hippocampal plasticity in response to estrogen in young and aged female rats
PNAS,
June 20, 2001;
(2001)
141215898.
[Abstract]
[Full Text]
[PDF]
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B. McEwen, K. Akama, S. Alves, W. G. Brake, K. Bulloch, S. Lee, C. Li, G. Yuen, and T. A. Milner
Tracking the estrogen receptor in neurons: Implications for estrogen-induced synapse formation
PNAS,
June 19, 2001;
98(13):
7093 - 7100.
[Abstract]
[Full Text]
[PDF]
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Sex Differences in Brain Maturation during Childhood and Adolescence
Cereb Cortex,
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[Abstract]
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April 1, 2001;
97(4):
548 - 554.
[Abstract]
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C. J. Cunningham, M. Sinnott, A. Denihan, M. Rowan, J. B. Walsh, R. OMoore, D. Coakley, R. F. Coen, B. A. Lawler, and D. D. ONeill
Endogenous Sex Hormone Levels in Postmenopausal Women with Alzheimer's Disease
J. Clin. Endocrinol. Metab.,
March 1, 2001;
86(3):
1099 - 1103.
[Abstract]
[Full Text]
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Novel Target Sites for Estrogen Action in the Dorsal Hippocampus: An Examination of Synaptic Proteins
Endocrinology,
March 1, 2001;
142(3):
1284 - 1289.
[Abstract]
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PNAS,
February 15, 2001;
(2001)
51624598.
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