Assistant Medical Professor
Ph.D., 2000, City University of New York
M.S., 1995, Queens College, City University of New York
B.A., 1994, Queens College, City University of New York
Studying the effects of genetic modifications relevant to a variety of psychiatric and psychological disorders, including drug addiction, Alzheimer's disease, Parkinson's disease and autism
Animal models of psychiatric disorders
Elder, G.A., Ragnauth, A., Dorr, N. Franciosi, S., Schmeidler, J., Haroutunian, V., and Buxbaum, J.D. (2008). Increased locomotor activity in mice lacking the low-density lipoprotein receptor. Behavioral Brain Research, 22;191(2):256-65.
Juni, A., Klein, G., Kowalcyyk, B., Ragnauth, A., Kest, B. Sex differences in hyperalgesia during morphine infusion: Effect of gonadectomy and estrogen treatment. Neuropharmcology, April 2008 [epub. available online].
Rodriguiz R.M., Gadnidze K., Ragnauth A., Dorr N., Yanagisawa M, Wetsel, W.C., and Devi L.A.. Animals lacking endothelin converting enzyme-2 are deficient in learning and memory. Genes Brain and Behavior, Nov, 2007 [epub. available online].
Cataldo G, Bernal S, Markowitz A, Ogawa S, Ragnauth, A., Pfaff DW, Bodnar, R.J. Organizational manipulation of gonadal hormones and systemic morphine analgesia in female rats: effects of adult ovariectomy and estradiol replacement. Brain Research, 1059 (1):13-9, 2005.
Ragnauth, A., Moy, V., Brewer, C., Kow, L.-M., Ogawa, S., Pfaff, D.W. Female oxytocin gene knockout (OTKO) mice in a semi-natural environment (SNE) exhibit altered aggressive behaviors. Genes, Brain & Behavior, 4 (4):229-39, 2005.
Ragnauth, A., Brewer, C., Ogawa, S., Muglia, L., Pfaff, DW, Kow, L.-M. Vasopressin stimulates ventromedial hypothalamic neurons with oxytocin receptors in oxytocin gene knockout male and female mice. Neuroendocrinology,80 (2):92-9, 2004.
Kow, L. -M, Vasudevan, N., Devidze, N., Ragnauth, A., Pfaff, D.W. Mechanisms of steroid hormone actions on hypothalamic nerve cells: Molecular and biophysical studies relevant for hormone dependent behaviors. In Hormones and the Brain(Research and Perspectives in Endocrine Interactions), ed. Kordon et.al., Springer-Verlag, Berlin-Heidelberg, November, 2004.
Znamensky, V., Echo, J., Lamonte, N., Christian, G., Ragnauth, A., Bodnar, R.J. GABA receptor subtype antagonists differentially alter opioid-induced feeding in the shell-region of the nucleus accumbens in rats. Brain Research, 906: 84-91, 2001.
Ragnauth, A., Schuller, A., Morgan, M., Chan. J., Ogawa, S., Pintar, J., Bodnar, R.J., Pfaff, D.W. Female Preproenkephalin knockout mice display altered emotional responses. Proc Nat Acad Sci., 98 (4): 1958-1963, 2001.
Ragnauth, A., Znamensky, V., Moroz, M., Bodnar, R.J. Analysis of dopamine receptor antagonism upon feeding elicited by mu and delta opioid agonists in the shell region of the nucleus accumbens. Brain Research 877: 65–72, 2000.
Ragnauth, A., Moroz M., Bodnar, R.J. Multiple opioid receptors mediate feeding elicited by mu and delta opioid receptor subtype agonists in the nucleus accumbens shell in rats. Brain Research 876:76–87, 2000.
Spinella, M., Znamensky, V., Moroz, M., Ragnauth, A., Bodnar, R.J. Actions of NMDA and cholinergic receptor antagonists in the rostral ventromedial medulla upon -endorphin analgesia elicited from the ventrolateral periaqueductal gray. Brain Research 829: 151–159, 1999.
Burdick, K., Yu, W.-Z., Ragnauth, A., Moroz, M., Pan, Y.X., Rossi, G.C., Pasternak, G.W. Bodnar, R.J. Antisense mapping of opioid receptor clones: effects upon 2-deoxy-D-glucose-induced hyperphagia. Brain Research, 794: 359-363, 1998.