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Andrew Ishida

Professor
atishida (at) ucdavis (dot) edu


Neurobiology, Physiology and Behavior
Ophthalmology - Medicine

Office
1133 Life Sciences
(530) 752-3569

Lab
(530) 752-8507



Degrees:

1981 PhD University of California, Los Angeles (Biology)

Research Interests:


Vertebrate retinae use fast neurotransmitters to signal moment-to-moment changes in the distribution of incident light. Retinae contain an additional set of neurotransmitters which operate on slower time scales to modulate signal generation and transmission. One of these slowly acting neurotransmitters - dopamine - has been found to regulate light responses, chemical synapses, electrical coupling, and extrasynaptic currents of cells at every level of the retina. Because endogenous dopamine release is increased by illumination, these changes help the retina function as the "front end" of the visual system during daylight. Our laboratory studies how dopamine modulates action potentials and voltage-gated ion currents in adult mammalian retinal ganglion cells. We are identifying effects of dopamine and related ligands on ganglion cell excitability, digital and analog properties of spikes, currents activated by either depolarization or hyperpolarization, and signaling cascade components. We are pursuing these projects by use of patch-clamp recording, fast voltage-clamp, multielectrode array recording, immunohistochemistry, immunoprecipitation, calcium imaging, primary cell culture, and organotypic culture.


Awards:

ASUCD Excellence in Education Award (College of Biological Sciences, 2012)

CBS Graduate Group Affiliations:

Neuroscience  
Molecular, Cellular, and Integrative Physiology  

Publications:

Last updated 4/24/2014
Ogata G, Stradleigh TW, Partida GJ, Ishida AT (2012). Dopamine and full-field illumination activate D1 and D2-D5-type receptors in adult rat retinal ganglion cells. Journal of Comparative Neurology 520: 4032-4049.
 

Partida GJ, Stradleigh TW, Ogata G, Godzdanker I, Ishida AT (2012). Thy1 associates with the cation channel subunit HCN4 in adult rat retina. Investigative Ophthalmology and Visual Science 53: 1696-1703.
 

Stradleigh TW, Ogata G, Partida GJ, Oi H, Greenberg KP, Krempely KS, Ishida AT (2011). Colocalization of hyperpolarization-activated, cyclic nucleotide-gated channel subunits in rat retinal ganglion cells. Journal of Comparative Neurology 519: 2546-2573.
 

Hayashida Y, Varela C, Ogata G, Partida GJ, Oi H, Stradleigh TW, Lee SC, Felipe A, Ishida AT (2009). Inhibition of adult rat retinal ganglion cells by D1-type dopamine receptor activation. Journal of Neuroscience 29: 15001-15016.
 

Oi H, GJ Partida, SC Lee, AT Ishida (2008). HCN4-like immunoreactivity in rat retinal ganglion cells. Visual Neuroscience 25: 95-102.
 

Lee SC, AT Ishida (2007). I(h) without K(ir) in adult rat retinal ganglion cells. Journal of Neurophysiology 97: 3790-3799
 

Partida GJ, SC Lee, L Haft-Candell, GS Nichols, AT Ishida (2004). DARPP-32-like immunoreactivity in AII amacrine cells of rat retina. Journal of Comparative Neurology 480: 251-263
 

Hayashida Y, AT Ishida (2004). Dopamine receptor activation can reduce voltage-gated Na+ current by modulating both entry into and recovery from inactivation. Journal of Neurophysiology 92: 3134-3141
 

Ishida AT (2004). Retinal ganglion cell excitability. In: LM Chalupa and JS Werner (Eds.) The Visual Neurosciences. Cambridge, MA. MIT Press. pp 422-450
 

Lee SC, Y Hayashida, AT Ishida (2003). Availability of low-threshold Ca2+ current in retinal ganglion cells. Journal of Neurophysiology 90: 3888-3901
 

Vaquero CF, A Pignatelli, GJ Partida, AT Ishida (2001). A dopamine- and protein kinase A-dependent mechanism for network adaptation in retinal ganglion cells. Journal of Neuroscience 21:8624-8635
 

Tabata T, Ishida AT (1999). A zinc-dependent Cl- current in neuronal somata. Journal of Neuroscience 19: 5195-5204.
 

Hidaka S, Ishida AT (1998). Voltage-gated Na+ current availability after step- and spike-shaped conditioning depolarizations of retinal ganglion cells. Pflügers Archiv 436: 497-508.
 

Tabata T, Ishida AT (1996). Transient and sustained depolarization of retinal ganglion cells by Ih. Journal of Neurophysiology 75: 1932-1944.
 


Laboratory Personnel:

Ishida Lab

Bruce Cohen, Samuel Gamsky, Jeff Johnson, Leslie Lai, Gloria Partida, Tyler Stradleigh, Andrew Ishida



Teaching Interests:

Neurobiology and Physiology

Courses:

NSC 261A Topics in Vision