ArticleProceedings of the National Academy of Sciences of the United States of America2006
Characterization of brain neurons that express enzymes mediating neurosteroid biosynthesis.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 201 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
201 citing papers in PubMed, 381 citations in OpenAlex.
- Allopregnanolone Treatment Improves Plasma Metabolomic Profile Associated with GABA Metabolism in Fragile X-Associated Tremor/Ataxia Syndrome: a Pilot Study.Molecular neurobiology · 2019Trial
- Steroid 5α-reductases in the brain: From neurosteroidogenesis to therapeutic implications.Frontiers in neuroendocrinology · 2026Review
- Pregnanolone Glutamate: A Dual-Fate Delivery System for Neuroactive Steroids in Perinatal Focal Cerebral Ischemia.International journal of molecular sciences · 2026Article
- Maternal Sucrose Intake during Pregnancy Alone Disrupts Testosterone and Allopregnanolone Levels in the Fetal Brain of Rats.The Journal of nutrition · 2026Article
- The role of neuroactive steroids in psychiatric and neurological disorders: Neurobiology and therapeutic perspectives.Neuroscience and biobehavioral reviews · 2025Review
- Brain Metabolism of Allopregnanolone and Isoallopregnanolone in Male Rat Brain.International journal of molecular sciences · 2025Article
- Expanding our understanding of (mal)adapted stress physiology in psychiatric disorders: achieving single-cell characterisation of steroids and neuropeptides.Neurobiology of stress · 2025Review
- Neuroactive steroid exposure impacts neurodevelopment: Comparison of human and rodent placental contribution.Journal of neuroendocrinology · 2025Review
- Single cell resolution of neurosteroidogenesis in the murine brain: intermediary biosynthesis.The Journal of endocrinology · 2025Article
- Effects of progestogen neurosteroids on locomotor activity in zebrafish embryos and larvae.Fish physiology and biochemistry · 2025Article
- KyohMolecules (Basel, Switzerland) · 2025Article
- Characteristics of TSPO expression in marmoset EAE.Journal of neuroinflammation · 2025Article
- Review
- Neurosteroids Alter p-ERK Levels and Tau Distribution, Restraining the Effects of High Extracellular Calcium.International journal of molecular sciences · 2024Article
- Neurosteroids in Glioma: A Novel Therapeutic Concept.Life (Basel, Switzerland) · 2024Review
- Article
- Neuroactive Steroids, Toll-like Receptors, and Neuroimmune Regulation: Insights into Their Impact on Neuropsychiatric Disorders.Life (Basel, Switzerland) · 2024Review
- Neurosteroid Modulation of Synaptic and Extrasynaptic GABABiomolecules · 2024Article
- Transcriptional Dysregulation of Cholesterol Synthesis Underlies Hyposensitivity to GABA in the Ventral Tegmental Area During Acute Alcohol Withdrawal.Biological psychiatry · 2024Article
- Developmental and adult stress: effects of steroids and neurosteroids.Stress (Amsterdam, Netherlands) · 2024Review
141 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
Allopregnanolone (ALLO) and tetrahydrodeoxycorticosterone (THDOC) are potent positive allosteric modulators of GABA action at GABA(A) receptors. ALLO and THDOC are synthesized in the brain from progesterone or deoxycorticosterone, respectively, by the sequential action of two enzymes: 5alpha-reductase (5alpha-R) type I and 3alpha-hydroxysteroid dehydrogenase (3alpha-HSD). This study evaluates 5alpha-R type I and 3alpha-HSD mRNA expression level in mouse brain by using in situ hybridization combined with glutamic acid decarboxylase 67/65, vesicular glutamate transporter 2, glial fibrillary acidic protein, and S100beta immunohistochemistry. We demonstrate that 5alpha-R type I and 3alpha-HSD colocalize in cortical, hippocampal, and olfactory bulb glutamatergic principal neurons and in some output neurons of the amygdala and thalamus. Neither 5alpha-R type I nor 3alpha-HSD mRNAs are expressed in S100beta- or glial fibrillary acidic protein-positive glial cells. Using glutamic acid decarboxylase 67/65 antibodies to mark GABAergic neurons, we failed to detect 5alpha-R type I and 3alpha-HSD in cortical and hippocampal GABAergic interneurons. However, 5alpha-R type I and 3alpha-HSD are significantly expressed in principal GABAergic output neurons, such as striatal medium spiny, reticular thalamic nucleus, and cerebellar Purkinje neurons. A similar distribution and cellular location of neurosteroidogenic enzymes was observed in rat brain. Taken together, these data suggest that ALLO and THDOC, which can be synthesized in principal output neurons, modulate GABA action at GABA(A) receptors, either with an autocrine or a paracrine mechanism or by reaching GABA(A) receptor intracellular sites through lateral membrane diffusion.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.