Timothy Folsom

Researcher 2, Department of Psychiatry

Timothy Folsom

Contact Info


Office Phone 612-626-1542

Office Address:
Diehl Hall

MS, Zoology and Neuroscience, Iowa State University, 1996

BS, Biology, San Francisco State University, 1993


The focus of my work is in schizophrenia research through experiments using postmortem brain samples, animal models, and clinical studies.


Research Summary/Interests

My main focus is schizophrenia research, under the direction of Dr. S. Hossein Fatemi. Over the past several years I have worked on projects investigating dysfunction of the gamma-aminobutyric acid (GABA) and fragile X mental retardation (FMRP) signaling systems.


Folsom TD, Thuras PD, Fatemi SH. Protein expression of targets of the FMRP regulon is altered in brains of subjects with schizophrenia and mood disorder. Schizophrenia Research, 165:201-211, 2015.

Fatemi SH, Folsom TD. GABA receptor subunit distribution and FMRP-mGluR5 signaling abnormalities in the cerebellum of subjects with schizophrenia, mood disorders, and autism. Schizophrenia Research, 167:42-56, 2015.

Fatemi SH, Folsom TD. Existence of monomer and dimer forms of mGluR5, under reducing conditions in studies of postmortem brain in various psychiatric disorders. Schizophrenia Research, 158:270-271, 2014.

Fatemi SH, Folsom TD, Rooney RJ, Thuras PD. Expression of GABAA ?1, ?2, and ? receptors are significantly altered in lateral cerebellum of subjects with schizophrenia, bipolar disorder, and major depression. Translational Psychiatry, 3:e303, 2013.

Fatemi SH, Yousefi MK, Kneeland RE, Liesch SB, Folsom TD, Thuras PD. Antismoking and potential antipsychotic effects of varenicline in subjects with schizophrenia or schizoaffective disorder: A double-blind placebo and bupropion-controlled study. Schizophrenia Research 146:376-378, 2013.

Folsom TD, Fatemi SH. The involvement of Reelin in neurodevelopmental disorders. Neuropharmacology, 68:122-135, 2013.

Fatemi SH, Folsom TD, Rooney RJ, Thuras PD. mRNA and protein expression for novel GABAA receptors ? and ?2 are altered in schizophrenia and mood disorders: relevance to the FMRP-mGluR5 signaling pathway. Translational Psychiatry, 3:e271, 2013.

Fatemi SH, Folsom TD, Rooney RJ, Mori S, Kornfield TE, Reutiman TJ, Kneeland RE, Liesch SB, Hua K, Patel, DH. The viral theory of schizophrenia revisited: abnormal placental gene expression and structural changes with lack of evidence for H1N1 viral presence in placentae or brains of exposed offspring from infected mice. Neuropharmacology, 62:1290-1298, 2012.

Fatemi SH, Folsom TD, Reutiman TJ, Novak J, Engel R. Comparative gene expression study of the chronic exposure to clozapine and haloperidol in rat frontal cortex. Schizophrenia Research, 134:211-8, 2012.

Fatemi SH, Kneeland RE, Liesch SB, Folsom TD. Fragile X mental retardation protein levels are decreased in major psychiatric disorders. Schizophrenia Research, 124:246-247, 2010