Estrogen Modulation in Cognitive and Neurodegenerative Health

Oestrogens, particularly 17β-estradiol, exert profound influences on brain structure and function through both genomic and non-genomic actions. Classical oestrogen receptors (ERα and ERβ) regulate gene transcription over hours to days, while the G protein-coupled oestrogen receptor (GPER) activates rapid kinase cascades to modulate synaptic signalling in minutes. These pathways converge on neural circuits governing learning, memory and emotional processing, and they intersect with mechanisms of ageing and neurodegeneration. Fluctuations in endogenous oestrogen levels across the lifespan—in puberty, the menstrual cycle, pregnancy and menopause—shape synaptic plasticity, amyloid processing, neuroinflammation and mitochondrial resilience. Loss of oestrogenic tone in midlife can accelerate hippocampal atrophy, perturb energy metabolism and unmask vulnerability to Alzheimer’s-type pathology, whereas targeted modulation of ER-dependent pathways offers promising avenues for cognitive preservation and disease modification.

Research from Nature Portfolio

Recent studies have underscored the importance of genetic context when interpreting hormonal effects on the brain. A 2024 investigation using a four-core-genotypes mouse model identified an unreported X–Y translocation that alters X-linked gene expression, including key immune sensors in microglia. This finding highlights how chromosomal variations can confound behavioural and neurodegenerative phenotypes previously attributed solely to oestrogenic modulation, emphasising the need for refined genetic controls in preclinical studies.

Estrogen Modulation in Cognitive and Neurodegenerative Health publication trend

The graph below shows the total number of articles in estrogen modulation in cognitive and neurodegenerative health across all publications each year (not limited to Nature Index journals).

Technical terms

17β-Estradiol: the predominant biologically active oestrogen that modulates neuronal and glial function.

Estrogen receptors α and β (ERα/ERβ): nuclear transcription factors that regulate gene expression in response to ligand binding.

G protein-coupled oestrogen receptor (GPER): membrane-associated receptor triggering rapid intracellular signalling cascades.

Epigenetic mechanisms: chemical modifications to DNA or histones that alter gene expression without changing the nucleotide sequence.

Synaptic plasticity: the dynamic ability of synapses to strengthen or weaken over time, underpinning learning and memory.

References

1. Four Core Genotypes mice harbour a 3.2MB X-Y translocation that perturbs Tlr7 dosage. Nature Communications (2024).
2. Epigenetic mechanisms underlying sex differences in the brain and behavior. Trends in Neurosciences (2023).
3. G Protein–Coupled Estrogen Receptor GPER: Molecular Pharmacology and Therapeutic Applications. The Annual Review of Pharmacology and Toxicology (2023).
4. Increased Alzheimer's risk during the menopause transition: A 3-year longitudinal brain imaging study. PLOS ONE (2018).