Dr. D’Souza joined the faculty in the College of Pharmacy at Ohio Northern University in 2013. He is currently an Assistant Professor in the Department of Pharmaceutical and Biomedical Sciences. His research focuses on identifying neural mechanisms that play a role in the development of drug dependence. Dr. D’Souza has authored several peer-reviewed original scientific papers and review articles on neural mechanisms of drugs of abuse.
Major curricular areas:
Medical Advisor: Lupin pharmaceuticals, Mumbai, India (2001)
- M.D.: Seth G.S. Medical College and King Edward Memorial Hospital, University of Mumbai (2001)
- Ph.D.: College of Pharmacy, University of Texas at Austin (2007)
- Postdoctoral Fellowship: Department of Psychiatry, University of California San Diego (2007-2013)
- Neurobiology of drug addiction
- Neurobiology of neuropsychiatric disorders
- Bruce-Jones Graduate Research Fellowship, Waggoner Center of Alcohol and Addiction Research, The University of Texas, Austin, TX (2003-2006)
- Tobacco-Related Disease Research Program Fellowship (TRDRP) State of California, USA. Initiative to develop treatments for nicotine addiction (2010-2013)
- 2004-present: Society for Neuroscience (SFN)
- 2008-present: American Society of Pharmacology and Experimental Therapeutics (ASPET)
- 2013-present: American Association of Colleges of Pharmacy (AACP)
- Neurobiology of drug addiction
- Development of translational animal models for drug addiction research
- Understanding the role of stress and psychiatric disorders in the development of drug addiction
Dr. D’Souza’s laboratory is focused on understanding the neurobiological mechanisms that mediate the rewarding effects of nicotine, a major psychoactive component of tobacco smoke. The rewarding effects of nicotine play an important role in the initiation and maintenance of tobacco smoking behavior.
In addition, Dr. D’Souza is interested in identifying specific neural circuits that play a role in the learning and extinction of nicotine-associated environmental cues. Nicotine-associated environmental cues play an important role in relapse amongst abstinent smokers. The laboratory uses a combination of behavioral, molecular and neurochemical techniques in rodent models of nicotine dependence to achieve the above goals. The overall goal of the laboratory is to identify specific targets that can be used for the discovery of new medications, which will promote smoking cessation and prevent relapse in abstinent smokers.
- D’Souza MS and Markou A (2014) Differential role of N-methyl-D-aspartate receptor-mediated glutamate transmission in nucleus accumbens shell and core in nicotine seeking in rats. European Journal of Neuroscience In press
- Der-Avakian A, D’Souza MS, Pizzagalli DA and Markou A (2014). Assessment of reward responsiveness in the response bias probabilistic reward task in rats: implications for cross-species translational research. Translational Psychiatry [Epub ahead of print] PMID: 23982629.
- Li X, Semenova S, D’Souza MS, Stoker AK, Markou A. Involvement of Glutamatergic and GABAergic Systems in Nicotine Dependence: Implications for Novel Pharmacotherapies for Smoking Cessation. Neuropharmacology . 2013 [Epub ahead of print] PMID: 23752091
- Ramirez A, D’Souza MS and Markou AM (2013). N-acetylcysteine decreased nicotine self-administration and cue-induced reinstatement of nicotine-seeking in rats. Psychopharmacology 225(2):473-82. PMID 22903390.
- Siddique S, Dhanya RP, Sheffler DJ, Nickols HH, Yang L, Dahl R, D’Souza MS, Semenova S, Conn PJ, Markou A, Cosford ND (2012). Orally active metabotropic glutamate subtype 2 receptor positive allosteric modulators: structure-activity relationships and assessment in a rat model of nicotine dependence. Journal of Medicinal Chemistry 55(22): 9434-45. PMID 23009245
- D’Souza MS & Markou A (2012). Schizophrenia and tobacco smoking comorbidity: nAChR agonists in the treatment of schizophrenia-associated cognitive deficits. Neuropharmacology 62 (3): 1564-73. PMID 21288740
- D’Souza MS & Markou A (2011). Neuronal mechanisms underlying development of nicotine dependence: Implications for new smoking-cessation treatments. Addiction Science and Clinical Practice 6(1): 4-16. PMID 22003417
- D’Souza MS and Markou A (2011) The metabotropic glutamate receptor 5 antagonist 2-methyl-6-(phenylethynyl)pyridine (MPEP) microinfusions in the nucleus accumbens shell and ventral tegmental area attenuate the reinforcing effects of nicotine in rats. Neuropharmacology 61(8): 1399-1405. PMID 21896278
- D'Souza MS, Liechti ME, Ramirez AM, Kuczenski R and Markou A (2011) The metabotropic glutamatergic 2/3 receptor agonist LY379268 blocked nicotine-induced increases in the nucleus accumbens shell dopamine in rats in the presence of nicotine-associated context in rats Neuropsychopharmacology 36(10): 2111-2124. PMID 21654734
- D’Souza MS & Duvauchelle CL (2008) Certain or uncertain cocaine expectations influences accumbens dopamine responses to self-administered cocaine and non-rewarded operant behavior. European Neuropsychopharmacology 18; 628-638. PMID 18499407.
- Ikegami A, Olsen CM, D’Souza MS and Duvauchelle CL (2007) Experience-dependent effects of cocaine self-administration/conditioning on prefrontal and accumbens dopamine responses. Behavioral Neuroscience 121(2): 389-400. PMID 17469929
- D’Souza MS & Duvauchelle CL (2006) Comparing nucleus accumbens and dorsal striatum dopamine responses to self-administered cocaine in naïve rats. Neuroscience Letters 408(2): 146-50. PMID 16979294
- D’Souza MS, Ikegami AI, Olsen CM and Duvauchelle CL (2003) Chronic D1 agonist and ethanol coadministration facilitate ethanol-mediated behaviors. Pharmacology, Biochemistry and Behavior 76:335-342. PMID 14592686
- D’Souza MS and Markou A (2013) Stop & Go: Role of glutamate and GABA in nicotine dependence.In: Addiction: A neurobiological perspective. Pierce, R.C., Kenny, P.J. (eds.). Cold Spring Harbor Laboratory Press 2013 PMID:23732855.
- D’Souza MS and Markou A (2010) Neural substrates of psychostimulant withdrawal-induced anhedonia. In: The Behavioral Neuroscience of Drug Addiction. Self, D.W., Staley, J.K. (eds.). In Series: Current Topics in Behavioral Neurosciences. Geyer, M.A., Ellenbroek, B.A., Marsden, C.A. (eds). Springer-Verlag, Berlin 3: 119-78. PMID 21161752
- D’Souza MS (2013). “Understanding dopamine, glutamate and acetylcholine interactions in nicotine dependence using animal models”. Oral presentation as part of a symposium at the 52nd Annual meeting of the American College of Neuropsychopharmacology held in Florida Dec 8-12 at The Westin Diplomat Resort & Spa in Hollywood, Florida.
- D’Souza MS (2012). “Blockade of N-methyl-D-aspartate receptor-mediated neurotransmission in the nucleus accumbens increases nicotine-seeking behavior in rats- Does the development of an anhedonia-like state play a role?” Oral presentation as part of a symposium at the 18th annual meeting of the Society for Research on Nicotine and Tobacco in Houston, Texas.
- D’Souza MS (2011). “N-methyl-D-aspartate receptor-mediated neurotransmission in the nucleus accumbens shell or core regulates nicotine reinforcement and nicotine-seeking behavior in rats. Oral presentation as part of a Data Blitz session at the ‘Nicotinic Acetylcholine Receptors as Therapeutic Targets: Emerging Frontiers in Basic Research & Clinical Science’, 3rd satellite meeting to the Society for Neuroscience held on Nov 9-11 in Washington D.C.