ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2009
17Beta-estradiol regulation of T-type calcium channels in gonadotropin-releasing hormone neurons.
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.
What it found
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Who cites it
69 citing papers in PubMed, 105 citations in OpenAlex.
- Estrogen effects on human airway smooth muscle involve cAMP and protein kinase A.American journal of physiology. Lung cellular and molecular physiology · 2012Trial
- Article
- Estradiol elicits distinct firing patterns in arcuate nucleus kisspeptin neurons of females through altering ion channel conductances.bioRxiv : the preprint server for biology · 2024Article
- Changes in the Bile Acid Pool and Timing of Female Puberty: Potential Novel Role of Hypothalamic TGR5.Endocrinology · 2024Article
- Sex and age affect depot expression of Ca2+ channels in rat white fat adipocytes.Journal of molecular endocrinology · 2024Article
- Low-Frequency Stimulation of Trpv1-Lineage Peripheral Afferents Potentiates the Excitability of Spino-Periaqueductal Gray Projection Neurons.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024Article
- Review
- Expression of polyamines and its association with GnRH-I in the hypothalamus during aging in rodent model.Amino acids · 2022Article
- The E3 ubiquitin ligase RNF216/TRIAD3 is a key coordinator of the hypothalamic-pituitary-gonadal axis.iScience · 2022Article
- The electrophysiologic properties of gonadotropin-releasing hormone neurons.Journal of neuroendocrinology · 2022Review
- The Transcription Factor Shox2 Shapes Neuron Firing Properties and Suppresses Seizures by Regulation of Key Ion Channels in Thalamocortical Neurons.Cerebral cortex (New York, N.Y. : 1991) · 2021Article
- Sex Differences in Electrophysiological Properties of Mouse Medial Preoptic Area Neurons Revealed by In Vitro Whole-cell Recordings.Neuroscience bulletin · 2021Article
- TRPC1/5-CaFrontiers in neuroscience · 2021Article
- Neural Burst Firing and Its Roles in Mental and Neurological Disorders.Frontiers in cellular neuroscience · 2021Article
- Differential Roles of Hypothalamic AVPV and Arcuate Kisspeptin Neurons in Estradiol Feedback Regulation of Female Reproduction.Neuroendocrinology · 2020Review
- Changes in Both Neuron Intrinsic Properties and Neurotransmission Are Needed to Drive the Increase in GnRH Neuron Firing Rate during Estradiol-Positive Feedback.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2019Article
- Membrane-initiated estrogen signaling via Gq-coupled GPCR in the central nervous system.Steroids · 2019Review
- Proestrus Differentially Regulates Expression of Ion Channel and Calcium Homeostasis Genes in GnRH Neurons of Mice.Frontiers in molecular neuroscience · 2019Article
- Emerging insights into hypothalamic-pituitary-gonadal axis regulation and interaction with stress signalling.Journal of neuroendocrinology · 2018Review
- TRPCing around the hypothalamus.Frontiers in neuroendocrinology · 2018Review
9 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
T-type calcium channels are responsible for generating low-threshold spikes that facilitate burst firing and neurotransmitter release in neurons. Gonadotropin-releasing hormone (GnRH) neurons exhibit burst firing, but the underlying conductances are not known. Previously, we found that 17beta-estradiol (E2) increases T-type channel expression and excitability of hypothalamic arcuate nucleus neurons. Therefore, we used ovariectomized oil- or E2-treated EGFP (enhanced green fluorescent protein)-GnRH mice to explore the expression and E2 regulation of T-type channels in GnRH neurons. Based on single-cell reverse transcriptase-PCR and real-time PCR quantification of the T-type channel alpha(1) subunits, we found that all three subunits were expressed in GnRH neurons, with expression levels as follows: Cav3.3 > or = Cav3.2 > Cav3.1. The mRNA expression of the three subunits was increased with surge-inducing levels of E2 during the morning. During the afternoon, Cav3.3 mRNA expression remained elevated, whereas Cav3.1 and Cav3.2 were decreased. The membrane estrogen receptor agonist STX increased the expression of Cav3.3 but not Cav3.2 in GnRH neurons. Whole-cell patch recordings in GnRH neurons revealed that E2 treatment significantly augmented T-type current density at both time points and increased the rebound excitation during the afternoon. Although E2 regulated the mRNA expression of all three subunits in GnRH neurons, the increased expression combined with the slower inactivation kinetics of the T-type current indicates that Cav3.3 may be the most important for bursting activity associated with the GnRH/LH (luteinizing hormone) surge. The E2-induced increase in mRNA expression, which depends in part on membrane-initiated signaling, leads to increased channel function and neuronal excitability and could be a mechanism by which E2 facilitates burst firing and cyclic GnRH neurosecretion.
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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.