Abstract
Estrogen regulates a wide range of neuronal functions in the brain, such as dendritic spine formation, remodeling of synaptic plasticity, cognition, neurotransmission, and neurodevelopment. Estrogen interacts with intracellular estrogen receptors (ERs) and membrane-bound ERs to produce its effect via genomic and non-genomic pathways. Any alterations in these pathways affect the number, size, and shape of dendritic spines in neurons associated with psychiatric diseases. Increasing evidence suggests that estrogen fluctuation causes changes in dendritic spine density, morphology, and synapse numbers of excitatory and inhibitory neurons differently in males and females. In this review, we discuss the role of estrogen hormone in rodents and humans based on sex differences. First, we explain estrogen role in learning and memory and show that a high estrogen level alleviates the deficits in learning and memory. Secondly, we point out that estrogen produces a striking difference in emotional memories in men and women, which leads them to display sex-specific differences in underlying neuronal signaling. Lastly, we discuss that fluctuations in estrogen levels in men and women are related to neuropsychiatric disorders, including schizophrenia, autism spectrum disorder (ASD), attention deficit hyperactivity disorder (ADHD), bipolar disorder (BPD), major depressive disorder (MDD), substance use disorder (SUD), and anxiety disorders.
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Abbreviations
- PFC:
-
Prefrontal cortex
- NAc:
-
Nucleus accumbens
- STR:
-
Striatum radiatum
- mPFC:
-
Medial prefrontal cortex
- EC:
-
Entorhinal cortex
- POA:
-
Preoptic area
- mPOA:
-
Medial preoptic area (POA)
- DLS:
-
Dorsolateral stratum
- ARC:
-
Arcuate nucleus
- VMH:
-
Ventromedial nucleus
- ERα:
-
Estrogen receptor alpha
- ERβ:
-
Estrogen receptor-beta
- GPER:
-
G-protein coupled estrogen receptor
- ERE:
-
Estrogen responsive element
- CA1:
-
Cornu Ammonis area-1
- CA2:
-
Cornu Ammonis area-2
- CA3:
-
Cornu Ammonis area-3
- DG:
-
Dendate gyrus
- ERK:
-
Extracellular receptor kinase
- PKC:
-
Protein kinase C
- PKA:
-
Protein kinase A
- MAPK:
-
Mitogen activated protein kinase
- PI3k:
-
Akt phosphoinositide 3-kinase
- AMPA:
-
α-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid
- NMDA:
-
N-methyl-d-aspartate
- LTP:
-
Long-term potentiation
- LTD:
-
Long-term depression
- OVX:
-
Ovariectomized
- fMRI:
-
Functional magnetic resonance imaging
- BDNF:
-
Brain-derived neurotrophic factor
- TrkB:
-
Tropomyosin receptor kinase B
- PET:
-
Positron emission tomography
- CREB:
-
CAMP response element binding protein
- ERT:
-
Estrogen replacement therapy
- Arc:
-
Activity-regulated cytoskeleton protein
- DHT:
-
Dihydrotestosterone
- SERM:
-
Selective estrogen receptor modifier
- DISC1:
-
Disrupted-in-schizophrenia 1
- CNTNAP2:
-
Contactin Associated Protein-like 2
- iPSC:
-
Induced pluripotent stem cell
- CPP:
-
Conditioned place preference
- HTR7:
-
Serotonin receptor 7 gene
- DA:
-
Dopamine
- CB1R:
-
Cannabinoid type-1 receptor
- mGlu5:
-
Metabotropic glutamate receptors subtype five
- TBI:
-
Traumatic brain injury
- PTSD:
-
Posttraumatic stress disorder
- ASD:
-
Autism spectrum disorder
- BPD:
-
Bipolar disorder
- MDD:
-
Major depressive disorder
- ADHD:
-
Attention deficit hyperactivity disorder
- SUD:
-
Substance use disorder
- GAD:
-
General anxiety disorder
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This work was supported by grants from the National Natural Science Foundation of China (32250410298), the Science and Technology Planning Project of Shenzhen Municipality (KCXFZ20211020164543007, KCXFZ20230731093600002 and 20210617155253001), the Guangdong Basic and Applied Basic Research Foundation (306083115032) and the Shenzhen Fund for Guangdong Provincial High-level Clinical Key Specialties (SZGSP013).
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Iqbal, J., Huang, GD., Xue, YX. et al. Role of estrogen in sex differences in memory, emotion and neuropsychiatric disorders. Mol Biol Rep 51, 415 (2024). https://doi.org/10.1007/s11033-024-09374-z
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DOI: https://doi.org/10.1007/s11033-024-09374-z