| Title |
Neonatal Dexamethasone Treatment Suppresses Hippocampal Estrogen Receptor α Expression in Adolescent Female Rats
|
|---|---|
| Published in |
Molecular Neurobiology, July 2018
|
| DOI | 10.1007/s12035-018-1214-6 |
| Pubmed ID | |
| Authors |
Hui-Fang Chiu, Michael W. Y. Chan, Chiung-Yin Cheng, Jian-Liang Chou, Jora Meng-Ju Lin, Yi-Ling Yang, Kwok-Tung Lu |
| Abstract |
Previous studies showed that neonatal dexamethasone treatment (NDT) transiently impaired hippocampal function in male rats. Hippocampal estrogen receptors (ERs) participate in avoidance learning. As previous studies focused on males only, this study was aimed to investigate the NDT effects on the hippocampal function of female rats. Newborn Wistar female rats were subjected to a tapering dose of dexamethasone (0.5 mg, 0.3 mg, and 0.1 mg/kg, subcutaneously) from postnatal days 1 to 3 and were subjected to experiments at the age of 6 weeks (adolescence). Brain slice extracellular recording and the inhibitory avoidance (IA) test were used to evaluate the NDT effects on hippocampal function. The results showed that NDT completely blocked the hippocampal long-term potentiation (LTP) formation and IA learning of adolescents. The expression of hippocampal estrogen receptor alpha (ERα) was attenuated in NDT subjects. Reduced histone acetylation of the ERα gene was found, possibly explaining the reduced hippocampal ERα expression in NDT female rats. Suprafusion of estradiol (E2) partially restored the hippocampal LTP formation in adolescent NDT female rats. Coadministration of the histone deacetylase inhibitor trichostatin-A restored the hippocampal ERα expression, hippocampal LTP formation, and IA learning in adolescent NDT female rats. Collectively, these results suggested that NDT has an epigenetic modulation effect on the expression of hippocampal ERα, which is responsible for its adverse effect on hippocampal function. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 2 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 2 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 11 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 11 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 4 | 36% |
| Student > Master | 2 | 18% |
| Professor > Associate Professor | 1 | 9% |
| Unknown | 4 | 36% |
| Readers by discipline | Count | As % |
|---|---|---|
| Biochemistry, Genetics and Molecular Biology | 2 | 18% |
| Agricultural and Biological Sciences | 2 | 18% |
| Arts and Humanities | 1 | 9% |
| Psychology | 1 | 9% |
| Unknown | 5 | 45% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 15 July 2018.
All research outputs
#18,643,992
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Outputs from Molecular Neurobiology
#2,492
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Outputs of similar age from Molecular Neurobiology
#111
of 151 outputs
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