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Mechanical stimulation of cervical vertebrae modulates the discharge activity of ventral tegmental area neurons and dopamine release in the nucleus accumbens.

Bills KB, Obray JD, Clarke T, Parsons M, Brundage J, Yang CH, Kim HY, Yorgason JT, Blotter JD, Steffensen SC.

Brain Stimul. 2019 Dec 4. pii: S1935-861X(19)30470-X. doi: 10.1016/j.brs.2019.11.012. [Epub ahead of print]


The potent psychomotor, rewarding and reinforcing properties of 3-fluoromethamphetamine in rodents.

Ryu IS, Yoon SS, Choi MJ, Lee YE, Kim JS, Kim WH, Cheong JH, Kim HJ, Jang CG, Lee YS, Steffensen SC, Ka M, Woo DH, Jang EY, Seo JW.

Addict Biol. 2019 Dec 4:e12846. doi: 10.1111/adb.12846. [Epub ahead of print]


Unpleasant Sound Elicits Negative Emotion and Reinstates Drug Seeking.

Chang S, Fan Y, Shin JH, Ryu Y, Kim MS, Steffensen SC, Kim HK, Kim JM, Lee BH, Jang EY, Yang CH, Kim HY.

Mol Neurobiol. 2019 Nov;56(11):7594-7607. doi: 10.1007/s12035-019-1609-z. Epub 2019 May 9.


Targeted Subcutaneous Vibration With Single-Neuron Electrophysiology As a Novel Method for Understanding the Central Effects of Peripheral Vibrational Therapy in a Rodent Model.

Bills KB, Clarke T, Major GH, Jacobson CB, Blotter JD, Feland JB, Steffensen SC.

Dose Response. 2019 Jan 27;17(1):1559325818825172. doi: 10.1177/1559325818825172. eCollection 2019 Jan-Mar.


Alpha6-containing nicotinic acetylcholine receptor is a highly sensitive target of alcohol.

Gao F, Chen D, Ma X, Sudweeks S, Yorgason JT, Gao M, Turner D, Eaton JB, McIntosh JM, Lukas RJ, Whiteaker P, Chang Y, Steffensen SC, Wu J.

Neuropharmacology. 2019 May 1;149:45-54. doi: 10.1016/j.neuropharm.2019.01.021. Epub 2019 Jan 30.


Glutamate Transmission to Ventral Tegmental Area GABA Neurons Is Altered by Acute and Chronic Ethanol.

Williams SB, Yorgason JT, Nelson AC, Lewis N, Nufer TM, Edwards JG, Steffensen SC.

Alcohol Clin Exp Res. 2018 Nov;42(11):2186-2195. doi: 10.1111/acer.13883. Epub 2018 Oct 3.


Baseline effects of lysophosphatidylcholine and nerve growth factor in a rat model of sciatic nerve regeneration after crush injury.

Wood RL, Karlinsey KS, Thompson AD, Rigby MN, Boatright GD, Pitt WG, Roeder BL, Steffensen SC, Cook AD.

Neural Regen Res. 2018 May;13(5):846-853. doi: 10.4103/1673-5374.232479.


Pharmacological and functional comparisons of α6/α3β2β3-nAChRs and α4β2-nAChRs heterologously expressed in the human epithelial SH-EP1 cell line.

Chen DJ, Gao FF, Ma XK, Shi GG, Huang YB, Su QX, Sudweeks S, Gao M, Dharshaun T, Eaton JB, Chang YC, Mcintosh JM, Lukas RJ, Whiteaker P, Steffensen SC, Wu J.

Acta Pharmacol Sin. 2018 Oct;39(10):1571-1581. doi: 10.1038/aps.2017.209. Epub 2018 May 24.


Peripheral Dopamine in Restless Legs Syndrome.

Mitchell UH, Obray JD, Hunsaker E, Garcia BT, Clarke TJ, Hope S, Steffensen SC.

Front Neurol. 2018 Mar 15;9:155. doi: 10.3389/fneur.2018.00155. eCollection 2018.


Ventral Tegmental Area GABA Neurons Are Resistant to GABA(A) Receptor-Mediated Inhibition During Ethanol Withdrawal.

Nelson AC, Williams SB, Pistorius SS, Park HJ, Woodward TJ, Payne AJ, Obray JD, Shin SI, Mabey JK, Steffensen SC.

Front Neurosci. 2018 Mar 5;12:131. doi: 10.3389/fnins.2018.00131. eCollection 2018.


Acupuncture inhibition of methamphetamine-induced behaviors, dopamine release and hyperthermia in the nucleus accumbens: mediation of group II mGluR.

Kim NJ, Ryu Y, Lee BH, Chang S, Fan Y, Gwak YS, Yang CH, Bills KB, Steffensen SC, Koo JS, Jang EY, Kim HY.

Addict Biol. 2019 Mar;24(2):206-217. doi: 10.1111/adb.12587. Epub 2018 Jan 23.


Methamphetamine Induces Dopamine Release in the Nucleus Accumbens Through a Sigma Receptor-Mediated Pathway.

Hedges DM, Obray JD, Yorgason JT, Jang EY, Weerasekara VK, Uys JD, Bellinger FP, Steffensen SC.

Neuropsychopharmacology. 2018 May;43(6):1405-1414. doi: 10.1038/npp.2017.291. Epub 2017 Nov 29.


α6 subunit-containing nicotinic receptors mediate low-dose ethanol effects on ventral tegmental area neurons and ethanol reward.

Steffensen SC, Shin SI, Nelson AC, Pistorius SS, Williams SB, Woodward TJ, Park HJ, Friend L, Gao M, Gao F, Taylor DH, Foster Olive M, Edwards JG, Sudweeks SN, Buhlman LM, Michael McIntosh J, Wu J.

Addict Biol. 2018 Sep;23(5):1079-1093. doi: 10.1111/adb.12559. Epub 2017 Sep 13.


Spinal pathways involved in somatosensory inhibition of the psychomotor actions of cocaine.

Chang S, Ryu Y, Gwak YS, Kim NJ, Kim JM, Lee JY, Kim SA, Lee BH, Steffensen SC, Jang EY, Yang CH, Kim HY.

Sci Rep. 2017 Jul 13;7(1):5359. doi: 10.1038/s41598-017-05681-7.


Acupuncture reduces relapse to cocaine-seeking behavior via activation of GABA neurons in the ventral tegmental area.

Jin W, Kim MS, Jang EY, Lee JY, Lee JG, Kim HY, Yoon SS, Lee BH, Chang S, Kim JH, Choi KH, Koo H, Gwak YS, Steffensen SC, Ryu YH, Kim HY, Yang CH.

Addict Biol. 2018 Jan;23(1):165-181. doi: 10.1111/adb.12499. Epub 2017 Mar 7.


The role of reactive oxygen species in methamphetamine self-administration and dopamine release in the nucleus accumbens.

Jang EY, Yang CH, Hedges DM, Kim SP, Lee JY, Ekins TG, Garcia BT, Kim HY, Nelson AC, Kim NJ, Steffensen SC.

Addict Biol. 2017 Sep;22(5):1304-1315. doi: 10.1111/adb.12419. Epub 2016 Jul 14.


The Effects of Acute Dopamine Precursor Depletion on the Cognitive Control Functions of Performance Monitoring and Conflict Processing: An Event-Related Potential (ERP) Study.

Larson MJ, Clayson PE, Primosch M, Leyton M, Steffensen SC.

PLoS One. 2015 Oct 22;10(10):e0140770. doi: 10.1371/journal.pone.0140770. eCollection 2015.


Involvement of reactive oxygen species in cocaine-taking behaviors in rats.

Jang EY, Ryu YH, Lee BH, Chang SC, Yeo MJ, Kim SH, Folsom RJ, Schilaty ND, Kim KJ, Yang CH, Steffensen SC, Kim HY.

Addict Biol. 2015 Jul;20(4):663-75. doi: 10.1111/adb.12159. Epub 2014 Jun 26.


Acute ethanol inhibits dopamine release in the nucleus accumbens via α6 nicotinic acetylcholine receptors.

Schilaty ND, Hedges DM, Jang EY, Folsom RJ, Yorgason JT, McIntosh JM, Steffensen SC.

J Pharmacol Exp Ther. 2014 Jun;349(3):559-67. doi: 10.1124/jpet.113.211490. Epub 2014 Mar 18.


Peripheral afferent mechanisms underlying acupuncture inhibition of cocaine behavioral effects in rats.

Kim SA, Lee BH, Bae JH, Kim KJ, Steffensen SC, Ryu YH, Leem JW, Yang CH, Kim HY.

PLoS One. 2013 Nov 18;8(11):e81018. doi: 10.1371/journal.pone.0081018. eCollection 2013.


Frequency-dependent effects of ethanol on dopamine release in the nucleus accumbens.

Yorgason JT, Ferris MJ, Steffensen SC, Jones SR.

Alcohol Clin Exp Res. 2014 Feb;38(2):438-47. doi: 10.1111/acer.12287. Epub 2013 Oct 11.


Ventral tegmental area GABA neurons and opiate motivation.

Ting-A-Kee R, Vargas-Perez H, Mabey JK, Shin SI, Steffensen SC, van der Kooy D.

Psychopharmacology (Berl). 2013 Jun;227(4):697-709. doi: 10.1007/s00213-013-3002-3. Epub 2013 Feb 8.


Impact of prefrontal cortex in nicotine-induced excitation of ventral tegmental area dopamine neurons in anesthetized rats.

Zhang D, Gao M, Xu D, Shi WX, Gutkin BS, Steffensen SC, Lukas RJ, Wu J.

J Neurosci. 2012 Sep 5;32(36):12366-75.


AZD-3043: a novel, metabolically labile sedative-hypnotic agent with rapid and predictable emergence from hypnosis.

Egan TD, Obara S, Jenkins TE, Jaw-Tsai SS, Amagasu S, Cook DR, Steffensen SC, Beattie DT.

Anesthesiology. 2012 Jun;116(6):1267-77. doi: 10.1097/ALN.0b013e31825685a6.


Effects of acupuncture on stress-induced relapse to cocaine-seeking in rats.

Yoon SS, Yang EJ, Lee BH, Jang EY, Kim HY, Choi SM, Steffensen SC, Yang CH.

Psychopharmacology (Berl). 2012 Jul;222(2):303-11. doi: 10.1007/s00213-012-2683-3. Epub 2012 Mar 29.


The role of connexin-36 gap junctions in alcohol intoxication and consumption.

Steffensen SC, Bradley KD, Hansen DM, Wilcox JD, Wilcox RS, Allison DW, Merrill CB, Edwards JG.

Synapse. 2011 Aug;65(8):695-707. doi: 10.1002/syn.20885. Epub 2010 Dec 28.


Mefloquine effects on ventral tegmental area dopamine and GABA neuron inhibition: a physiologic role for connexin-36 GAP junctions.

Allison DW, Wilcox RS, Ellefsen KL, Askew CE, Hansen DM, Wilcox JD, Sandoval SS, Eggett DL, Yanagawa Y, Steffensen SC.

Synapse. 2011 Aug;65(8):804-13. doi: 10.1002/syn.20907. Epub 2011 Apr 7.


Acupuncture inhibits GABA neuron activity in the ventral tegmental area and reduces ethanol self-administration.

Yang CH, Yoon SS, Hansen DM, Wilcox JD, Blumell BR, Park JJ, Steffensen SC.

Alcohol Clin Exp Res. 2010 Dec;34(12):2137-46. doi: 10.1111/j.1530-0277.2010.01310.x. Epub 2010 Sep 22.


Ventral tegmental area BDNF induces an opiate-dependent-like reward state in naive rats.

Vargas-Perez H, Ting-A Kee R, Walton CH, Hansen DM, Razavi R, Clarke L, Bufalino MR, Allison DW, Steffensen SC, van der Kooy D.

Science. 2009 Jun 26;324(5935):1732-4. doi: 10.1126/science.1168501. Epub 2009 May 28.


Acute and chronic ethanol modulate dopamine D2-subtype receptor responses in ventral tegmental area GABA neurons.

Ludlow KH, Bradley KD, Allison DW, Taylor SR, Yorgason JT, Hansen DM, Walton CH, Sudweeks SN, Steffensen SC.

Alcohol Clin Exp Res. 2009 May;33(5):804-11. doi: 10.1111/j.1530-0277.2009.00899.x. Epub 2009 Mar 6.


Cocaine disinhibits dopamine neurons in the ventral tegmental area via use-dependent blockade of GABA neuron voltage-sensitive sodium channels.

Steffensen SC, Taylor SR, Horton ML, Barber EN, Lyle LT, Stobbs SH, Allison DW.

Eur J Neurosci. 2008 Nov;28(10):2028-40. doi: 10.1111/j.1460-9568.2008.06479.x.


Contingent and non-contingent effects of low-dose ethanol on GABA neuron activity in the ventral tegmental area.

Steffensen SC, Walton CH, Hansen DM, Yorgason JT, Gallegos RA, Criado JR.

Pharmacol Biochem Behav. 2009 Mar;92(1):68-75. doi: 10.1016/j.pbb.2008.10.012. Epub 2008 Oct 29.


Gender-selective effects of the P300 and N400 components of the visual evoked potential.

Steffensen SC, Ohran AJ, Shipp DN, Hales K, Stobbs SH, Fleming DE.

Vision Res. 2008 Mar;48(7):917-25. doi: 10.1016/j.visres.2008.01.005.


Brain stimulation reward is integrated by a network of electrically coupled GABA neurons.

Lassen MB, Brown JE, Stobbs SH, Gunderson SH, Maes L, Valenzuela CF, Ray AP, Henriksen SJ, Steffensen SC.

Brain Res. 2007 Jul 2;1156:46-58. Epub 2007 Apr 25.


Contingent and non-contingent effects of heroin on mu-opioid receptor-containing ventral tegmental area GABA neurons.

Steffensen SC, Stobbs SH, Colago EE, Lee RS, Koob GF, Gallegos RA, Henriksen SJ.

Exp Neurol. 2006 Nov;202(1):139-51. Epub 2006 Jun 30.


Connexin-36 gap junctions mediate electrical coupling between ventral tegmental area GABA neurons.

Allison DW, Ohran AJ, Stobbs SH, Mameli M, Valenzuela CF, Sudweeks SN, Ray AP, Henriksen SJ, Steffensen SC.

Synapse. 2006 Jul;60(1):20-31.


Ethanol suppression of ventral tegmental area GABA neuron electrical transmission involves N-methyl-D-aspartate receptors.

Stobbs SH, Ohran AJ, Lassen MB, Allison DW, Brown JE, Steffensen SC.

J Pharmacol Exp Ther. 2004 Oct;311(1):282-9. Epub 2004 May 28.


A novel electroencephalographic analysis method discriminates alcohol effects from those of other sedative/hypnotics.

Steffensen SC, Lee RS, Henriksen SJ, Packer TL, Cook DR.

J Neurosci Methods. 2002 Apr 15;115(2):145-56.


Responses of ventral tegmental area GABA neurons to brain stimulation reward.

Steffensen SC, Lee RS, Stobbs SH, Henriksen SJ.

Brain Res. 2001 Jul 6;906(1-2):190-7.


Ethanol inhibition of N-methyl-D-aspartate responses involves presynaptic gamma-aminobutyric acid(B) receptors.

Steffensen SC, Nie Z, Criado JR, Siggins GR.

J Pharmacol Exp Ther. 2000 Aug;294(2):637-47.


Transgenic rescue of SNAP-25 restores dopamine-modulated synaptic transmission in the coloboma mutant.

Steffensen SC, Henriksen SJ, Wilson MC.

Brain Res. 1999 Nov 20;847(2):186-95.


Adaptive responses of gamma-aminobutyric acid neurons in the ventral tegmental area to chronic ethanol.

Gallegos RA, Lee RS, Criado JR, Henriksen SJ, Steffensen SC.

J Pharmacol Exp Ther. 1999 Dec;291(3):1045-53.


C10 is a novel chemokine expressed in experimental inflammatory demyelinating disorders that promotes recruitment of macrophages to the central nervous system.

Asensio VC, Lassmann S, Pagenstecher A, Steffensen SC, Henriksen SJ, Campbell IL.

Am J Pathol. 1999 Apr;154(4):1181-91.


Electrophysiological characterization of GABAergic neurons in the ventral tegmental area.

Steffensen SC, Svingos AL, Pickel VM, Henriksen SJ.

J Neurosci. 1998 Oct 1;18(19):8003-15.


Coloboma contiguous gene deletion encompassing Snap alters hippocampal plasticity.

Steffensen SC, Wilson MC, Henriksen SJ.

Synapse. 1996 Mar;22(3):281-9.


Behavioral and neurophysiological effects of CNS expression of cytokines in transgenic mice.

Gold LH, Heyser CJ, Roberts AJ, Henriksen SJ, Steffensen SC, Siggins GR, Bellinger FP, Chiang CS, Powell HC, Masliah E, Campbell IL.

Adv Exp Med Biol. 1996;402:199-205. Review. No abstract available.


Persistent dentate granule cell hyperexcitability after neonatal infection with lymphocytic choriomeningitis virus.

Pearce BD, Steffensen SC, Paoletti AD, Henriksen SJ, Buchmeier MJ.

J Neurosci. 1996 Jan;16(1):220-8.

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