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3,4-Methylenedioxymethamphetamine Increases Affiliative Behaviors in Squirrel Monkeys in a Serotonin 2A Receptor-Dependent Manner.

Pitts EG, Minerva AR, Oliver EB, Kohn JN, Logun MT, Sulima A, Rice KC, Howell LL.

Neuropsychopharmacology. 2017 Apr 20. doi: 10.1038/npp.2017.80. [Epub ahead of print]


Effects of a Serotonin 2C Agonist and a 2A Antagonist on Actigraphy-Based Sleep Parameters Disrupted by Methamphetamine Self-Administration in Rhesus Monkeys.

Perez Diaz M, Andersen ML, Rice KC, Howell LL.

Neuropsychopharmacology. 2017 Jan 18. doi: 10.1038/npp.2016.280. [Epub ahead of print]


Actigraphy-based sleep parameters during the reinstatement of methamphetamine self-administration in rhesus monkeys.

Berro LF, Andersen ML, Tufik S, Howell LL.

Exp Clin Psychopharmacol. 2016 Apr;24(2):142-6. doi: 10.1037/pha0000064. Epub 2016 Feb 15.


Serotonin 5-HT2 receptor interactions with dopamine function: implications for therapeutics in cocaine use disorder.

Howell LL, Cunningham KA.

Pharmacol Rev. 2015;67(1):176-97. doi: 10.1124/pr.114.009514. Review.


Effects of pharmacologic dopamine β-hydroxylase inhibition on cocaine-induced reinstatement and dopamine neurochemistry in squirrel monkeys.

Cooper DA, Kimmel HL, Manvich DF, Schmidt KT, Weinshenker D, Howell LL.

J Pharmacol Exp Ther. 2014 Jul;350(1):144-52. doi: 10.1124/jpet.113.212357. Epub 2014 May 9.


Monoamine transporter inhibitors and substrates as treatments for stimulant abuse.

Howell LL, Negus SS.

Adv Pharmacol. 2014;69:129-76. doi: 10.1016/B978-0-12-420118-7.00004-4. Review.


Serotonin 2A receptors differentially contribute to abuse-related effects of cocaine and cocaine-induced nigrostriatal and mesolimbic dopamine overflow in nonhuman primates.

Murnane KS, Winschel J, Schmidt KT, Stewart LM, Rose SJ, Cheng K, Rice KC, Howell LL.

J Neurosci. 2013 Aug 14;33(33):13367-74. doi: 10.1523/JNEUROSCI.1437-13.2013.


Hypothalamic proteoglycan syndecan-3 is a novel cocaine addiction resilience factor.

Chen J, Repunte-Canonigo V, Kawamura T, Lefebvre C, Shin W, Howell LL, Hemby SE, Harvey BK, Califano A, Morales M, Koob GF, Sanna PP.

Nat Commun. 2013;4:1955. doi: 10.1038/ncomms2955.


Chronic interferon-α decreases dopamine 2 receptor binding and striatal dopamine release in association with anhedonia-like behavior in nonhuman primates.

Felger JC, Mun J, Kimmel HL, Nye JA, Drake DF, Hernandez CR, Freeman AA, Rye DB, Goodman MM, Howell LL, Miller AH.

Neuropsychopharmacology. 2013 Oct;38(11):2179-87. doi: 10.1038/npp.2013.115. Epub 2013 May 9.


Effects of methamphetamine self-administration on actigraphy-based sleep parameters in rhesus monkeys.

Andersen ML, Diaz MP, Murnane KS, Howell LL.

Psychopharmacology (Berl). 2013 May;227(1):101-7. doi: 10.1007/s00213-012-2943-2. Epub 2012 Dec 22.


The serotonin 2C receptor antagonist SB 242084 exhibits abuse-related effects typical of stimulants in squirrel monkeys.

Manvich DF, Kimmel HL, Cooper DA, Howell LL.

J Pharmacol Exp Ther. 2012 Sep;342(3):761-9. doi: 10.1124/jpet.112.195156. Epub 2012 Jun 8.


Neurobiological changes mediating the effects of chronic fluoxetine on cocaine use.

Sawyer EK, Mun J, Nye JA, Kimmel HL, Voll RJ, Stehouwer JS, Rice KC, Goodman MM, Howell LL.

Neuropsychopharmacology. 2012 Jul;37(8):1816-24. doi: 10.1038/npp.2012.29. Epub 2012 Mar 21.


Effects of serotonin 2C receptor agonists on the behavioral and neurochemical effects of cocaine in squirrel monkeys.

Manvich DF, Kimmel HL, Howell LL.

J Pharmacol Exp Ther. 2012 May;341(2):424-34. doi: 10.1124/jpet.111.186981. Epub 2012 Feb 10.


The cystine-glutamate transporter enhancer N-acetyl-L-cysteine attenuates cocaine-induced changes in striatal dopamine but not self-administration in squirrel monkeys.

Bauzo RM, Kimmel HL, Howell LL.

Pharmacol Biochem Behav. 2012 Apr;101(2):288-96. doi: 10.1016/j.pbb.2011.12.018. Epub 2011 Dec 31.


Simultaneous measurement of extracellular dopamine and dopamine transporter occupancy by cocaine analogs in squirrel monkeys.

Kimmel HL, Nye JA, Voll R, Mun J, Stehouwer J, Goodman MM, Votaw JR, Carroll FI, Howell LL.

Synapse. 2012 Jun;66(6):501-8. doi: 10.1002/syn.21536. Epub 2012 Mar 16.


Influence of chronic dopamine transporter inhibition by RTI-336 on motor behavior, sleep, and hormone levels in rhesus monkeys.

Andersen ML, Sawyer EK, Carroll FI, Howell LL.

Exp Clin Psychopharmacol. 2012 Apr;20(2):77-83. doi: 10.1037/a0026034. Epub 2011 Oct 24.


Contributions of neuroimaging to understanding sex differences in cocaine abuse.

Andersen ML, Sawyer EK, Howell LL.

Exp Clin Psychopharmacol. 2012 Feb;20(1):2-15. doi: 10.1037/a0025219. Epub 2011 Aug 29. Review.


Neuroimaging and drug taking in primates.

Murnane KS, Howell LL.

Psychopharmacology (Berl). 2011 Jul;216(2):153-71. doi: 10.1007/s00213-011-2222-7. Epub 2011 Mar 1. Review.


Intravenous Drug Self-Administration in Nonhuman Primates.

Howell LL, Fantegrossi WE.

In: Buccafusco JJ, editor. Methods of Behavior Analysis in Neuroscience. 2nd edition. Boca Raton (FL): CRC Press/Taylor & Francis; 2009. Chapter 9.

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