| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
ARTICLES |
Department of Anatomy and Neurobiology (K.J.S., T.L.S., J.-P.W., F.E.D.), Animal Reproduction and Biotechnology Laboratory (K.J.S.), Colorado State University, Fort Collins, Colorado 80523; and Departments of Internal Medicine and Cell Biology (W.J.S., J.T.S., S.M.M.), National Science Foundation Center for Biological Timing, University of Virginia, Charlottesville, Virginia 22908
Address all correspondence and requests for reprints to: Suzanne M. Moenter, Department of Medicine, Box 578 HSC, University of Virginia, Charlottesville, Virginia 22908. E-mail: smm4n{at}virginia.edu
GnRH neurons form the final common pathway for central control of reproduction, with regulation achieved by changing the pattern of GnRH pulses. To help elucidate the neurobiological mechanisms underlying pulsatile GnRH release, we generated transgenic mice in which the green fluorescent protein (GFP) reporter was genetically targeted to GnRH neurons. The expression of GFP allowed identification of 8494% of immunofluorescently-detected GnRH neurons. Conversely, over 99.5% of GFP-expressing neurons contained immunologically detectable GnRH peptide. In hypothalamic slices, GnRH neurons could be visualized with fluorescence, allowing for identification of individual GnRH neurons for patch-clamp recording and subsequent morphological analysis. Whole-cell current-clamp recordings revealed that all GnRH neurons studied (n = 23) fire spontaneous action potentials. Both spontaneous firing (n = 9) and action potentials induced by injection of depolarizing current (n = 17) were eliminated by tetrodotoxin, indicating that voltage-dependent sodium channels are involved in generating action potentials in these cells. Direct intracellular morphological assessment of GnRH dendritic morphology revealed GnRH neurons have slightly more extensive dendrites than previously reported. GnRH-GFP transgenic mice represent a new model for the study of GnRH neuron structure and function, and their use should greatly increase our understanding of this important neuroendocrine system.
This article has been cited by other articles:
![]() |
C. A. Christian and S. M. Moenter Critical Roles for Fast Synaptic Transmission in Mediating Estradiol Negative and Positive Feedback in the Neural Control of Ovulation Endocrinology, November 1, 2008; 149(11): 5500 - 5508. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. A. Christian, C. Glidewell-Kenney, J. L. Jameson, and S. M. Moenter Classical Estrogen Receptor {alpha} Signaling Mediates Negative and Positive Feedback on Gonadotropin-Releasing Hormone Neuron Firing Endocrinology, November 1, 2008; 149(11): 5328 - 5334. [Abstract] [Full Text] [PDF] |
||||
![]() |
B. C. Wadas and S. A. Tobet Unique Estrogenic Mechanisms for Unique Gonadotropin-Releasing Hormone Neurons? Endocrinology, November 1, 2008; 149(11): 5325 - 5327. [Full Text] [PDF] |
||||
![]() |
Y. Wang, M. Garro, H. A. Dantzler, J. A. Taylor, D. D. Kline, and M. C. Kuehl-Kovarik Age Affects Spontaneous Activity and Depolarizing Afterpotentials in Isolated Gonadotropin-Releasing Hormone Neurons Endocrinology, October 1, 2008; 149(10): 4938 - 4947. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. C. Gill, B. Wadas, P. Chen, W. Portillo, A. Reyna, E. Jorgensen, S. Mani, G. A. Schwarting, S. M. Moenter, S. Tobet, et al. The Gonadotropin-Releasing Hormone (GnRH) Neuronal Population Is Normal in Size and Distribution in GnRH-Deficient and GnRH Receptor-Mutant Hypogonadal Mice Endocrinology, September 1, 2008; 149(9): 4596 - 4604. [Abstract] [Full Text] [PDF] |
||||
![]() |
K. J. Suter and L. O'Farrell Impaired episodic LH secretion in female mice with GFP in GnRH neurons Am J Physiol Endocrinol Metab, July 1, 2008; 295(1): E130 - E136. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. A. Christian and S. M. Moenter Vasoactive Intestinal Polypeptide Can Excite Gonadotropin-Releasing Hormone Neurons in a Manner Dependent on Estradiol and Gated by Time of Day Endocrinology, June 1, 2008; 149(6): 3130 - 3136. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. Xu, T. A. Roepke, C. Zhang, O. K. Ronnekleiv, and M. J. Kelly Gonadotropin-Releasing Hormone (GnRH) Activates the M-Current in GnRH Neurons: An Autoregulatory Negative Feedback Mechanism? Endocrinology, May 1, 2008; 149(5): 2459 - 2466. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. Zhang, T. A. Roepke, M. J. Kelly, and O. K. Ronnekleiv Kisspeptin Depolarizes Gonadotropin-Releasing Hormone Neurons through Activation of TRPC-Like Cationic Channels J. Neurosci., April 23, 2008; 28(17): 4423 - 4434. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. Pielecka-Fortuna, Z. Chu, and S. M. Moenter Kisspeptin Acts Directly and Indirectly to Increase Gonadotropin-Releasing Hormone Neuron Activity and Its Effects Are Modulated by Estradiol Endocrinology, April 1, 2008; 149(4): 1979 - 1986. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. Zhang, M. A. Bosch, J. E. Levine, O. K. Ronnekleiv, and M. J. Kelly Gonadotropin-Releasing Hormone Neurons Express KATP Channels That Are Regulated by Estrogen and Responsive to Glucose and Metabolic Inhibition J. Neurosci., September 19, 2007; 27(38): 10153 - 10164. [Abstract] [Full Text] [PDF] |
||||
![]() |
D. J. Spergel Calcium and Small-Conductance Calcium-Activated Potassium Channels in Gonadotropin-Releasing Hormone Neurons before, during, and after Puberty Endocrinology, May 1, 2007; 148(5): 2383 - 2390. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. Cariboni, J. Hickok, S. Rakic, W. Andrews, R. Maggi, S. Tischkau, and J. G. Parnavelas Neuropilins and Their Ligands Are Important in the Migration of Gonadotropin-Releasing Hormone Neurons J. Neurosci., February 28, 2007; 27(9): 2387 - 2395. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. A. Christian and S. M. Moenter Estradiol Induces Diurnal Shifts in GABA Transmission to Gonadotropin-Releasing Hormone Neurons to Provide a Neural Signal for Ovulation J. Neurosci., February 21, 2007; 27(8): 1913 - 1921. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. L. Jasoni, M. G. Todman, M. M. Strumia, and A. E. Herbison Cell Type-Specific Expression of a Genetically Encoded Calcium Indicator Reveals Intrinsic Calcium Oscillations in Adult Gonadotropin-Releasing Hormone Neurons J. Neurosci., January 24, 2007; 27(4): 860 - 867. [Abstract] [Full Text] [PDF] |
||||
![]() |
Z. Chu and S. M. Moenter Physiologic Regulation of a Tetrodotoxin-Sensitive Sodium Influx That Mediates a Slow Afterdepolarization Potential in Gonadotropin-Releasing Hormone Neurons: Possible Implications for the Central Regulation of Fertility. J. Neurosci., November 15, 2006; 26(46): 11961 - 11973. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. Arroyo, B. Kim, R. L. Rasmusson, G. Bett, and J. Yeh Hyperpolarization-Activated Cation Channels Are Expressed in Rat Hypothalamic Gonadotropin-Releasing Hormone (GnRH) Neurons and Immortalized GnRH Neurons Reproductive Sciences, September 1, 2006; 13(6): 442 - 450. [Abstract] [PDF] |
||||
![]() |
B. L. Jones, P. J. Whiting, and L. P. Henderson Mechanisms of anabolic androgenic steroid inhibition of mammalian {varepsilon}-subunit-containing GABAA receptors J. Physiol., June 15, 2006; 573(3): 571 - 593. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. El-Etr, Y. Akwa, E.-E. Baulieu, and M. Schumacher The Neuroactive Steroid Pregnenolone Sulfate Stimulates the Release of Gonadotropin-Releasing Hormone from GT1-7 Hypothalamic Neurons, through N-Methyl-D-Aspartate Receptors Endocrinology, June 1, 2006; 147(6): 2737 - 2743. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. Pielecka and S. M. Moenter Effect of Steroid Milieu on Gonadotropin-Releasing Hormone-1 Neuron Firing Pattern and Luteinizing Hormone Levels in Male Mice Biol Reprod, May 1, 2006; 74(5): 931 - 937. [Abstract] [Full Text] [PDF] |
||||
![]() |
T. R. Pak, W. C. J. Chung, J. L. Roberts, and R. J. Handa Ligand-Independent Effects of Estrogen Receptor {beta} on Mouse Gonadotropin-Releasing Hormone Promoter Activity Endocrinology, April 1, 2006; 147(4): 1924 - 1931. [Abstract] [Full Text] [PDF] |
||||
![]() |
N. B. Schwartz and J. E. Levine Ontogeny of gonadotropin-releasing hormone neurons: fishing for clues in medaka. Endocrinology, March 1, 2006; 147(3): 1074 - 1075. [Full Text] [PDF] |
||||
![]() |
K. Okubo, F. Sakai, E. L. Lau, G. Yoshizaki, Y. Takeuchi, K. Naruse, K. Aida, and Y. Nagahama Forebrain Gonadotropin-Releasing Hormone Neuronal Development: Insights from Transgenic Medaka and the Relevance to X-Linked Kallmann Syndrome Endocrinology, March 1, 2006; 147(3): 1076 - 1084. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. Pielecka, S. D. Quaynor, and S. M. Moenter Androgens Increase Gonadotropin-Releasing Hormone Neuron Firing Activity in Females and Interfere with Progesterone Negative Feedback Endocrinology, March 1, 2006; 147(3): 1474 - 1479. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. A. Tobet and G. A. Schwarting Minireview: Recent Progress in Gonadotropin-Releasing Hormone Neuronal Migration Endocrinology, March 1, 2006; 147(3): 1159 - 1165. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. B. Roberts, J. A. Best, and K. J. Suter Dendritic Processing of Excitatory Synaptic Input in Hypothalamic Gonadotropin Releasing-Hormone Neurons Endocrinology, March 1, 2006; 147(3): 1545 - 1555. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. C. Gill and P.-S. Tsai Expression of a Dominant Negative FGF Receptor in Developing GNRH1 Neurons Disrupts Axon Outgrowth and Targeting to the Median Eminence Biol Reprod, March 1, 2006; 74(3): 463 - 472. [Abstract] [Full Text] [PDF] |
||||
![]() |
K. Wada, L. Hu, N. Mores, C. E. Navarro, H. Fuda, L. Z. Krsmanovic, and K. J. Catt Serotonin (5-HT) Receptor Subtypes Mediate Specific Modes of 5-HT-Induced Signaling and Regulation of Neurosecretion in Gonadotropin-Releasing Hormone Neurons Mol. Endocrinol., January 1, 2006; 20(1): 125 - 135. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. M. Moenter and R. A. DeFazio Endogenous {gamma}-Aminobutyric Acid Can Excite Gonadotropin-Releasing Hormone Neurons Endocrinology, December 1, 2005; 146(12): 5374 - 5379. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. M. Khan, M. Hadman, C. Wakade, L. M. De Sevilla, K. M. Dhandapani, V. B. Mahesh, R. K. Vadlamudi, and D. W. Brann Cloning, Expression, and Localization of MNAR/PELP1 in Rodent Brain: Colocalization in Estrogen Receptor-{alpha}- But Not in Gonadotropin-Releasing Hormone-Positive Neurons Endocrinology, December 1, 2005; 146(12): 5215 - 5227. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. A. Christian, J. L. Mobley, and S. M. Moenter Diurnal and estradiol-dependent changes in gonadotropin-releasing hormone neuron firing activity PNAS, October 25, 2005; 102(43): 15682 - 15687. [Abstract] [Full Text] [PDF] |
||||
![]() |
H. Abe and E. Terasawa Firing Pattern and Rapid Modulation of Activity by Estrogen in Primate Luteinizing Hormone Releasing Hormone-1 Neurons Endocrinology, October 1, 2005; 146(10): 4312 - 4320. [Abstract] [Full Text] [PDF] |
||||
![]() |
N. Rave-Harel, N. L. G. Miller, M. L. Givens, and P. L. Mellon The Groucho-related Gene Family Regulates the Gonadotropin-releasing Hormone Gene through Interaction with the Homeodomain Proteins MSX1 and OCT1 J. Biol. Chem., September 2, 2005; 280(35): 30975 - 30983. [Abstract] [Full Text] [PDF] |
||||
![]() |
E. P. Bless, H. J. Walker, K. W. Yu, J. G. Knoll, S. M. Moenter, G. A. Schwarting, and S. A. Tobet Live View of Gonadotropin-Releasing Hormone Containing Neuron Migration Endocrinology, January 1, 2005; 146(1): 463 - 468. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. D. Sullivan and S. M. Moenter GABAergic Integration of Progesterone and Androgen Feedback to Gonadotropin-Releasing Hormone Neurons Biol Reprod, January 1, 2005; 72(1): 33 - 41. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. L. Givens, R. Kurotani, N. Rave-Harel, N. L. G. Miller, and P. L. Mellon Phylogenetic Footprinting Reveals Evolutionarily Conserved Regions of the Gonadotropin-Releasing Hormone Gene that Enhance Cell-Specific Expression Mol. Endocrinol., December 1, 2004; 18(12): 2950 - 2966. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. K. Greenwood and R. D. Fernald Social Regulation of the Electrical Properties of Gonadotropin-Releasing Hormone Neurons in a Cichlid Fish (Astatotilapia burtoni) Biol Reprod, September 1, 2004; 71(3): 909 - 918. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. C. Gill, S. M. Moenter, and P.-S. Tsai Developmental Regulation of Gonadotropin-Releasing Hormone Neurons by Fibroblast Growth Factor Signaling Endocrinology, August 1, 2004; 145(8): 3830 - 3839. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. J. Martinez-Fuentes, L. Hu, L. Z. Krsmanovic, and K. J. Catt Gonadotropin-Releasing Hormone (GnRH) Receptor Expression and Membrane Signaling in Early Embryonic GnRH Neurons: Role in Pulsatile Neurosecretion Mol. Endocrinol., July 1, 2004; 18(7): 1808 - 1817. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. D. Sullivan and S. M. Moenter Prenatal androgens alter GABAergic drive to gonadotropin-releasing hormone neurons: Implications for a common fertility disorder PNAS, May 4, 2004; 101(18): 7129 - 7134. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. Watanabe, Y. Sakuma, and M. Kato High Expression of the R-Type Voltage-Gated Ca2+ Channel and Its Involvement in Ca2+-Dependent Gonadotropin-Releasing Hormone Release in GT1-7 Cells Endocrinology, May 1, 2004; 145(5): 2375 - 2383. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. D. Sullivan and S. M. Moenter {gamma}-Aminobutyric Acid Neurons Integrate and Rapidly Transmit Permissive and Inhibitory Metabolic Cues to Gonadotropin-Releasing Hormone Neurons Endocrinology, March 1, 2004; 145(3): 1194 - 1202. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. Xu, X.-Z. Xu, C. S. Nunemaker, and S. M. Moenter Dose-Dependent Switch in Response of Gonadotropin-Releasing Hormone (GnRH) Neurons to GnRH Mediated through the Type I GnRH Receptor Endocrinology, February 1, 2004; 145(2): 728 - 735. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. A. Tobet, H. J. Walker, M. L. Seney, and K. W. Yu Viewing Cell Movements in the Developing Neuroendocrine Brain Integr. Comp. Biol., December 1, 2003; 43(6): 794 - 801. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. S. Nunemaker, R. A. DeFazio, and S. M. Moenter Calcium Current Subtypes in GnRH Neurons Biol Reprod, December 1, 2003; 69(6): 1914 - 1922. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. Kato, K. Ui-Tei, M. Watanabe, and Y. Sakuma Characterization of Voltage-Gated Calcium Currents in Gonadotropin-Releasing Hormone Neurons Tagged with Green Fluorescent Protein in Rats Endocrinology, November 1, 2003; 144(11): 5118 - 5125. [Abstract] [Full Text] [PDF] |
||||
![]() |
G. F. Turi, Z. Liposits, S. M. Moenter, C. Fekete, and E. Hrabovszky Origin of Neuropeptide Y-Containing Afferents to Gonadotropin-Releasing Hormone Neurons in Male Mice Endocrinology, November 1, 2003; 144(11): 4967 - 4974. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. D. Sullivan and S. M. Moenter Neurosteroids Alter {gamma}-Aminobutyric Acid Postsynaptic Currents in Gonadotropin-Releasing Hormone Neurons: A Possible Mechanism for Direct Steroidal Control Endocrinology, October 1, 2003; 144(10): 4366 - 4375. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. D. Sullivan, R. A. DeFazio, and S. M. Moenter Metabolic Regulation of Fertility through Presynaptic and Postsynaptic Signaling to Gonadotropin-Releasing Hormone Neurons J. Neurosci., September 17, 2003; 23(24): 8578 - 8585. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. M. Leupen, S. A. Tobet, W. F. Crowley Jr., and K. Kaila Heterogeneous Expression of the Potassium-Chloride Cotransporter KCC2 in Gonadotropin-Releasing Hormone Neurons of the Adult Mouse Endocrinology, July 1, 2003; 144(7): 3031 - 3036. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Heger, M. Seney, E. Bless, G. A. Schwarting, M. Bilger, A. Mungenast, S. R. Ojeda, and S. A. Tobet Overexpression of Glutamic Acid Decarboxylase-67 (GAD-67) in Gonadotropin-Releasing Hormone Neurons Disrupts Migratory Fate and Female Reproductive Function in Mice Endocrinology, June 1, 2003; 144(6): 2566 - 2579. [Abstract] [Full Text] [PDF] |
||||
![]() |
N. Balthasar, P.-F. Mery, C. B. Magoulas, K. E. Mathers, A. Martin, P. Mollard, and I. C. A. F. Robinson Growth Hormone-Releasing Hormone (GHRH) Neurons in GHRH-Enhanced Green Fluorescent Protein Transgenic Mice: A Ventral Hypothalamic Network Endocrinology, June 1, 2003; 144(6): 2728 - 2740. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. S. Nunemaker, M. Straume, R. A. DeFazio, and S. M. Moenter Gonadotropin-Releasing Hormone Neurons Generate Interacting Rhythms in Multiple Time Domains Endocrinology, March 1, 2003; 144(3): 823 - 831. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Paruthiyil, M. E. Majdoubi, M. Conti, and R. I. Weiner Phosphodiesterase expression targeted to gonadotropin-releasing hormone neurons inhibits luteinizing hormone pulses in transgenic rats PNAS, December 24, 2002; 99(26): 17191 - 17196. [Abstract] [Full Text] [PDF] |
||||
![]() |
R. A. DeFazio, S. Heger, S. R. Ojeda, and S. M. Moenter Activation of A-Type {gamma}-Aminobutyric Acid Receptors Excites Gonadotropin-Releasing Hormone Neurons Mol. Endocrinol., December 1, 2002; 16(12): 2872 - 2891. [Abstract] [Full Text] [PDF] |
||||
![]() |
R. A. DeFazio and S. M. Moenter Estradiol Feedback Alters Potassium Currents and Firing Properties of Gonadotropin-Releasing Hormone Neurons Mol. Endocrinol., October 1, 2002; 16(10): 2255 - 2265. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. S. Nunemaker, R. A. DeFazio, and S. M. Moenter Estradiol-Sensitive Afferents Modulate Long-Term Episodic Firing Patterns of GnRH Neurons Endocrinology, June 1, 2002; 143(6): 2284 - 2292. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. A. Lawson, L. A. Macconell, J. Kim, B. T. Powl, S. B. Nelson, and P. L. Mellon Neuron-Specific Expression in Vivo by Defined Transcription Regulatory Elements of the GnRH Gene Endocrinology, April 1, 2002; 143(4): 1404 - 1412. [Abstract] [Full Text] [PDF] |
||||
![]() |
S.-K. Han, I. M. Abraham, and A. E. Herbison Effect of GABA on GnRH Neurons Switches from Depolarization to Hyperpolarization at Puberty in the Female Mouse Endocrinology, April 1, 2002; 143(4): 1459 - 1466. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. C. Kuehl-Kovarik, W. A. Pouliot, G. L. Halterman, |