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Harold Zakon

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Michael R Markham; Leonard K Kaczmarek; Harold H Zakon
A sodium-activated potassium channel supports high-frequency firing and reduces energetic costs during rapid modulations of action potential amplitude.
Benjamin J Liebeskind; David M Hillis; Harold H Zakon
Phylogeny unites animal sodium leak channels with fungal calcium channels in an ancient, voltage-insensitive clade.
Harold H Zakon
Adaptive evolution of voltage-gated sodium channels: the first 800 million years.

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All Publications

2013: Michael R Markham; Leonard K Kaczmarek; Harold H Zakon
A sodium-activated potassium channel supports high-frequency firing and reduces energetic costs during rapid modulations of action potential amplitude.
Journal of neurophysiology 2013;109(7):1713-23.
2012: Benjamin J Liebeskind; David M Hillis; Harold H Zakon
Phylogeny unites animal sodium leak channels with fungal calcium channels in an ancient, voltage-insensitive clade.
Molecular biology and evolution 2012;29(12):3613-6.
2012: Harold H Zakon
Adaptive evolution of voltage-gated sodium channels: the first 800 million years.
Proceedings of the National Academy of Sciences of the United States of America 2012;109 Suppl 1():10619-25.
2011: Andrew A George; Gregory Macleod; Harold H Zakon
Calcium-dependent phosphorylation regulates neuronal stability and plasticity in a highly precise pacemaker nucleus.
Journal of neurophysiology 2011;106(1):319-31.
2011: Benjamin J Liebeskind; David M Hillis; Harold H Zakon
Evolution of sodium channels predates the origin of nervous systems in animals.
Proceedings of the National Academy of Sciences of the United States of America 2011;108(22):9154-9.
2011: Harold H Zakon; Manda C Jost; Ying Lu
Expansion of voltage-dependent Na+ channel gene family in early tetrapods coincided with the emergence of terrestriality and increased brain complexity.
Molecular biology and evolution 2011;28(4):1415-24.
2011: Ashlee H Rowe; Matthew P Rowe; Joseph Scales; Yucheng Xiao; Theodore R Cummins; Klaus D Linse; Harold H Zakon
Isolation and characterization of CvIV4: a pain inducing α-scorpion toxin.
PloS one 2011;6(8):e23520.
2010: Nikolai C Dembrow; Diana L Pettit; Harold H Zakon
Calcium dynamics encode the magnitude of a graded memory underlying sensorimotor adaptation.
Journal of neurophysiology 2010;103(5):2372-81.
2009: Michael R Markham; M Lynne McAnelly; Philip K Stoddard; Harold H Zakon
Circadian and social cues regulate ion channel trafficking.
PLoS biology 2009;7(9):e1000203.
2009: Harold H Zakon; Manda C Jost; Derrick J Zwickl; Ying Lu; David M Hillis
Molecular evolution of Na+ channels in teleost fishes.
Integrative zoology 2009;4(1):64-74.
2008: He Liu; Ming-ming Wu; Harold H Zakon
A novel Na+ channel splice form contributes to the regulation of an androgen-dependent social signal.
The Journal of neuroscience : the official journal of the Society for Neuroscience 2008;28(37):9173-82.
2008: Harold H Zakon; Derrick J Zwickl; Ying Lu; David M Hillis
Molecular evolution of communication signals in electric fish.
The Journal of experimental biology 2008;211(Pt 11):1814-8.
2008: Manda Clair Jost; David M Hillis; Ying Lu; John W Kyle; Harry A Fozzard; Harold H Zakon
Toxin-resistant sodium channels: parallel adaptive evolution across a complete gene family.
Molecular biology and evolution 2008;25(6):1016-24.
2007: M Lynne McAnelly; Harold H Zakon
Androgen modulates the kinetics of the delayed rectifying K+ current in the electric organ of a weakly electric fish.
Developmental neurobiology 2007;67(12):1589-97.
2007: He Liu; Ming-Ming Wu; Harold H Zakon
Individual variation and hormonal modulation of a sodium channel beta subunit in the electric organ correlate with variation in a social signal.
Developmental neurobiology 2007;67(10):1289-304.
2007: W Preston Few; Harold H Zakon
Sex differences in and hormonal regulation of Kv1 potassium channel gene expression in the electric organ: molecular control of a social signal.
Developmental neurobiology 2007;67(5):535-49.
2006: Alicia E Novak; Manda C Jost; Ying Lu; Alison D Taylor; Harold H Zakon; Angeles B Ribera
Gene duplications and evolution of vertebrate voltage-gated sodium channels.
Journal of molecular evolution 2006;63(2):208-21.
2006: Harold H Zakon
Divide and conquer: Cell addition and aggressive signaling in electric fish.
Hormones and behavior 2006;50(1):8-9.
2006: Philip K Stoddard; Harold H Zakon; Michael R Markham; Lynne McAnelly
Regulation and modulation of electric waveforms in gymnotiform electric fish.
Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology 2006;192(6):613-24.
2006: Harold H Zakon; Ying Lu; Derrick J Zwickl; David M Hillis
Sodium channel genes and the evolution of diversity in communication signals of electric fishes: convergent molecular evolution.
Proceedings of the National Academy of Sciences of the United States of America 2006;103(10):3675-80.
2006: Jörg Oestreich; Nikolai C Dembrow; Andrew A George; Harold H Zakon
A "sample-and-hold" pulse-counting integrator as a mechanism for graded memory underlying sensorimotor adaptation.
Neuron 2006;49(4):577-88.
2005: Andrew H Bass; Harold H Zakon
Sonic and electric fish: at the crossroads of neuroethology and behavioral neuroendocrinology.
Hormones and behavior 2005;48(4):360-72.
2005: Jörg Oestreich; Harold H Zakon
Species-specific differences in sensorimotor adaptation are correlated with differences in social structure.
Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology 2005;191(9):845-56.
2004: Harold H Zakon
Physiology. Heeding the hormonal call.
Science (New York, N.Y.) 2004;305(5682):349-50.
2003: Harold H Zakon
Insight into the mechanisms of neuronal processing from electric fish.
Current opinion in neurobiology 2003;13(6):744-50.
2003: L McAnelly; A Silva; Harold H Zakon
Cyclic AMP modulates electrical signaling in a weakly electric fish.
Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology 2003;189(4):273-82.
2002: Graciela A Unguez; Harold H Zakon
Skeletal muscle transformation into electric organ in S. macrurus depends on innervation.
Journal of neurobiology 2002;53(3):391-402.
2002: Jörg Oestreich; Harold H Zakon
The long-term resetting of a brainstem pacemaker nucleus by synaptic input: a model for sensorimotor adaptation.
The Journal of neuroscience : the official journal of the Society for Neuroscience 2002;22(18):8287-96.
2002: Harold H Zakon; Jörg Oestreich; Sara Tallarovic; Frank Triefenbach
EOD modulations of brown ghost electric fish: JARs, chirps, rises, and dips.
Journal of physiology, Paris 2002;96(5-6):451-8.
2002: S K Tallarovic; Harold H Zakon
Electrocommunication signals in female brown ghost electric knifefish, Apteronotus leptorhynchus.
Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology 2002;188(8):649-57.
2002: Harold H Zakon
Convergent evolution on the molecular level.
Brain, behavior and evolution 2002;59(5-6):250-61.
2001: W Preston Few; Harold H Zakon
Androgens alter electric organ discharge pulse duration despite stability in electric organ discharge frequency.
Hormones and behavior 2001;40(3):434-42.
2001: Greg Lopreato; Ying Lu; A Southwell; Nigel Atkinson; David M Hillis; Thomas P Wilcox; Harold H Zakon
Evolution and divergence of sodium channel genes in vertebrates.
Proceedings of the National Academy of Sciences of the United States of America 2001;98(13):7588-92.
2000: G Troy Smith; Ying Lu; Harold H Zakon
Parvocells: a novel interneuron type in the pacemaker nucleus of a weakly electric fish.
The Journal of comparative neurology 2000;423(3):427-39.
2000: M Lynne McAnelly; Harold H Zakon
Coregulation of voltage-dependent kinetics of Na(+) and K(+) currents in electric organ.
The Journal of neuroscience : the official journal of the Society for Neuroscience 2000;20(9):3408-14.
2000: G Troy Smith; Harold H Zakon
Pharmacological characterization of ionic currents that regulate the pacemaker rhythm in a weakly electric fish.
Journal of neurobiology 2000;42(2):270-86.
1999: Harold H Zakon; Graciela A Unguez
Development and regeneration of the electric organ.
The Journal of experimental biology 1999;202(Pt 10):1427-34.
1999: Harold H Zakon; KD Dunlap
Sex steroids and communication signals in electric fish: a tale of two species.
Brain, behavior and evolution 1999;54(1):61-9.
1998: Graciela A Unguez; Harold H Zakon
Reexpression of myogenic proteins in mature electric organ after removal of neural input.
The Journal of neuroscience : the official journal of the Society for Neuroscience 1998;18(23):9924-35.
1998: Graciela A Unguez; Harold H Zakon
Phenotypic conversion of distinct muscle fiber populations to electrocytes in a weakly electric fish.
The Journal of comparative neurology 1998;399(1):20-34.
1998: KD Dunlap; Harold H Zakon
Behavioral actions of androgens and androgen receptor expression in the electrocommunication system of an electric fish, Eigenmannia virescens.
Hormones and behavior 1998;34(1):30-8.
1998: KD Dunlap; Peter Thomas; Harold H Zakon
Diversity of sexual dimorphism in electrocommunication signals and its androgen regulation in a genus of electric fish, Apteronotus.
Journal of comparative physiology. A, Sensory, neural, and behavioral physiology 1998;183(1):77-86.
1998: Harold H Zakon
The effects of steroid hormones on electrical activity of excitable cells.
Trends in neurosciences 1998;21(5):202-7.
1998: Harold H Zakon; Ying Lu; P Weisleder
Sensory cells determine afferent terminal morphology in cross-innervated electroreceptor organs: implications for hair cells.
The Journal of neuroscience : the official journal of the Society for Neuroscience 1998;18(7):2581-91.
1997: J M Patterson; Harold H Zakon
Transdifferentiation of muscle to electric organ: regulation of muscle-specific proteins is independent of patterned nerve activity.
Developmental biology 1997;186(1):115-26.
1997: KD Dunlap; M Lynne McAnelly; Harold H Zakon
Estrogen modifies an electrocommunication signal by altering the electrocyte sodium current in an electric fish, Sternopygus.
The Journal of neuroscience : the official journal of the Society for Neuroscience 1997;17(8):2869-75.
1996: L McAnelly; Harold H Zakon
Protein kinase A activation increases sodium current magnitude in the electric organ of Sternopygus.
The Journal of neuroscience : the official journal of the Society for Neuroscience 1996;16(14):4383-8.
1996: J M Patterson; Harold H Zakon
Differential expression of proteins in muscle and electric organ, a muscle derivative.
The Journal of comparative neurology 1996;370(3):367-76.
1996: J e Schaefer; Harold H Zakon
Opposing actions of androgen and estrogen on in vitro firing frequency of neuronal oscillators in the electromotor system.
The Journal of neuroscience : the official journal of the Society for Neuroscience 1996;16(8):2860-8.
1996: P Weisleder; Y Lu; Harold H Zakon
Tuberous electroreceptor organs form in denervated regenerating skin of a weakly electric fish.
The Journal of comparative neurology 1996;367(4):563-74.
1996: Harold H Zakon
Hormonal modulation of communication signals in electric fish.
Developmental neuroscience 1996;18(1-2):115-23.
1995: M B Ferrari; M L McAnelly; Harold H Zakon
Individual variation in and androgen-modulation of the sodium current in electric organ.
The Journal of neuroscience : the official journal of the Society for Neuroscience 1995;15(5 Pt 2):4023-32.
1994: P Weisleder; Y Lu; Harold H Zakon
Effects of denervation upon receptor cell survival and basal cell proliferation in tuberous electroreceptor organs of a weakly electric fish.
The Journal of comparative neurology 1994;347(4):545-52.
1993: M B Ferrari; Harold H Zakon
Conductances contributing to the action potential of Sternopygus electrocytes.
Journal of comparative physiology. A, Sensory, neural, and behavioral physiology 1993;173(3):281-92.
1993: J M Patterson; Harold H Zakon
Bromodeoxyuridine labeling reveals a class of satellite-like cells within the electric organ.
Journal of neurobiology 1993;24(5):660-74.
1993: Harold H Zakon
Weakly electric fish as model systems for studying long-term steroid action on neural circuits.
Brain, behavior and evolution 1993;42(4-5):242-51.
1992: A Mills; Harold H Zakon; M A Marchaterre; Andrew H Bass
Electric organ morphology of Sternopygus macrurus, a wave-type, weakly electric fish with a sexually dimorphic EOD.
Journal of neurobiology 1992;23(7):920-32.
1992: L J Fleishman; Harold H Zakon; W C Lemon
Communication in the weakly electric fish Sternopygus macrurus. II. Behavioral test of conspecific EOD detection ability.
Journal of comparative physiology. A, Sensory, neural, and behavioral physiology 1992;170(3):349-56.
1991: Harold H Zakon; P Thomas; H Y Yan
Electric organ discharge frequency and plasma sex steroid levels during gonadal recrudescence in a natural population of the weakly electric fish Sternopygus macrurus.
Journal of comparative physiology. A, Sensory, neural, and behavioral physiology 1991;169(4):493-9.
1991: A Mills; Harold H Zakon
Chronic androgen treatment increases action potential duration in the electric organ of Sternopygus.
The Journal of neuroscience : the official journal of the Society for Neuroscience 1991;11(8):2349-61.
1991: Harold H Zakon
Regeneration of electroreceptors in weakly electric fish.
Ciba Foundation symposium 1991;160():294-308; discussion 308-13.
1990: B Fritzsch; Harold H Zakon; D Y Sanchez
Time course of structural changes in regenerating electroreceptors of a weakly electric fish.
The Journal of comparative neurology 1990;300(3):386-404.
1990: Harold H Zakon; H Y Yan; P Thomas
Human chorionic gonadotropin-induced shifts in the electrosensory system of the weakly electric fish, Sternopygus.
Journal of neurobiology 1990;21(5):826-33.
1990: D Y Sanchez; Harold H Zakon
The effects of postembryonic receptor cell addition on the response properties of electroreceptive afferents.
The Journal of neuroscience : the official journal of the Society for Neuroscience 1990;10(1):361-9.
1989: M B Ferrari; Harold H Zakon
The medullary pacemaker nucleus is unnecessary for electroreceptor tuning plasticity in Sternopygus.
The Journal of neuroscience : the official journal of the Society for Neuroscience 1989;9(4):1354-61.
1988: B Fritzsch; Harold H Zakon
A simple, reliable and inexpensive silver stain for nerve fibers in bleached skin.
Zeitschrift für Naturforschung. C, Journal of biosciences 1988;43(7-8):606-8.
1986: C H Keller; Harold H Zakon; D Y Sanchez
Evidence for a direct effect of androgens upon electroreceptor tuning.
Journal of comparative physiology. A, Sensory, neural, and behavioral physiology 1986;158(3):301-10.