Research
Interests:
My laboratory is investigating brain anatomy, neuropathology
and hemispheric asymmetry in normal and schizophrenia patients. Schizophrenia
is characterized by neuroanatomical changes that seem to reflect both
developmental and molecular abnormalities. At present, the precise
nature of these changes is poorly characterized. This information is
essential to produce animal models of schizophrenia and to finally
understand the cause of this disease. Our goal is to more specifically
define the nature of these changes, and to determine their regional
expression across different areas and hemispheres of the cerebral cortex.
We are especially interested in auditory cortex because it is functionally
well defined, and it has hemispheric asymmetries that may be altered
in this disease.
Several approaches are being used to investigate the anatomy and neurochemistry
of the cerebral cortex. Over the past several years we have established
a collection of tissue from 60 postmortem human brains for these studies.
Quantitative methods are being developed and used to investigate different
anatomical features. These employ several fully automated microscopy
systems integrated with computer imaging stations. Histochemical methods
are being used to identify molecular changes in neurons and glia, and
to map these changes across areas of the cerebral cortex.
In addition to studies in humans, we are using tract-tracing methods
in non-human primates to tease apart the circuitry of auditory association
areas. More recently, we are developing rodent models of schizophrenia,
using histochemical methods to investigate changes seen after different
pharmacological treatments.
Recent publications:
Dias, E.C., T. McGinnis, J.F. Smiley, J.J. Foxe, C.E. Schroeder, D.C.
Javitt. (2005) Changing plans: Correlates of executive control in monkey
and human frontal cortex. Experimental Brain Res. In press.
K. G. Fu, T. A. Johnson, A. S. Shah, L. Arnold, J. Smiley, T. A. Hackett,
P. Garraghty and C. E. Schroeder, (2003). Auditory cortical neurons
respond to somatosensory stimulation. J. Neurosci. 23:7510-7515.
Saito, M.. Smiley, J., Toth, R., Vadasz, C. (2002).Microarray Analysis
of Gene Expression in Rat Hippocampus after Chronic Ethanol Treatment.
Neurochem. Res. 27:1217-1225
Balla, A., Koneru, R., Smiley, J.F., Sershen, H., Javitt, D.C. (2001)
Continuous phencyclidine treatment induces schizophrnia-like hyperreactivity
of striatal dopamine release. Neuropsychopharmacology: 25:157-64.
Schroeder, C., R.L. Lindsley, C. Specht, A. Marcovici, J.F. Smiley,
and D.C. Javitt (2001) Somatosensory input to auditory association
cortex in macaques: An anatomical basis for somatosensory-auditory
integration. J. Neurophys.. 85:1322-1327.
Smiley, J.F., J.P. Mcginnis, and D.C. Javitt (2000) Nitric oxide synthase
neurons are subsets of the somatostatin, neuropeptide Y, and calbindin
expressing cells of the monkey neocortex. Brain Research. 863:205-212.
Ghoshal, N., J.F.
Smiley, A.J. DeMaggio, M.F. Hoekstra, E.J. Cochran, L.I. Binder,
and J. Kuret. (1999) A new molecular link between the
fibrillar and granulovacuolar lesions of Alzheimer’s disease.
Am. J. Pathol. 155:1163-1172.
Smiley, J.F., M. Subramanian, and M.-M. Mesulam (1999). Monoaminergic-Cholinergic
Interactions in the Primate Basal Forebrain. Neuroscience 93:817-829.
Smiley, J.F., A.I. Levey, and M.-M. Mesulam (1999) m2 Muscarinic receptor
immunolocalization in cholinergic cells of the monkey basal forebrain
and striatum. Neuroscience. 90:803-814.
Smiley, J.F., and M.-Marsel Mesulam (1999) Cholinergic neurons of
the nucleus basalis of Meynert (Ch4) receive cholinergic, catecholaminergic,
and GABAergic synapses: An electron microscopic investigation in the
monkey. Neuroscience 88:241-251.
Smiley, J.F., A.I. Levey, and M.-M. Mesulam (1998) Infracortical interstitial
cells concurrently expressing m2-muscarinic receptors, AChE, and NADPH-d
in the human and monkey cerebral cortex. Neuroscience. 84:755-769.
Guillozet, A. L., J. F. Smiley, D.C. Mash and M.-M. Mesulam (1997)
Butyrylcholinesterase (BChE) in the life cycle of amyloid plaques.
Annals of Neurology 42:909-918.
Smiley, J.F., F. Morrell and M.-M. Mesulam (1997) Cholinergic Synapses
in Human Cerebral Cortex: An Ultrastructural Study in Serial Sections.
Exp. Neurol. 144:361-368.
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