Genetic contributions to deficits in adaptive function in schizophrenia


Principal Investigator: Tatiana Sitnikova
Abstract: The ultimate goals of schizophrenia research are to achieve understanding of the relationships between its genetic and environmental risk factors, biological and mental abnormalities, and pharmacological and psychosocial interventions effective in prevention/treatment of associated pathology. My career goal is to establish an effective, inter-disciplinary research program that will improve our understanding of schizophrenia throughout its multiple levels of pathology. The present project will be an important step toward this goal because it will take an inter-disciplinary approach to examine molecular genetic and neurocognitive bases of a core feature of schizophrenia - deficits in adaptive function. My doctoral training as a cognitive neuroscientist, followed by a post-doctoral fellowship in psychiatric neuroimaging and electrophysiology, have provided me with the necessary expertise to study neurocognitive phenotypes of schizophrenia. I now wish to integrate my training in neuropsychiatry with training in genetics that will enable me to investigate the association between specific genes and neurocognitive phenotypes of schizophrenia. Mass. General Hospital provides an ideal environment for this training as it unites a number of outstanding laboratories working in neuroscience, psychiatry, and genetics. Despite recent progress in understanding the molecular biology of the DLPFC, the neurocognitive mechanisms by which this system contributes to maladaptive behavior in schizophrenia are not yet well understood. Our preliminary data suggest that DLPFC mechanisms mediating specific real-world knowledge critical for flexible behavior are impaired in schizophrenia. The overall goal of this project is to examine contributions of COMT and MTHFR genes, known to influence prefrontal function, to these abnormalities. We will assay target neurocognitive mechanisms by recording high spatial resolution functional magnetic resonance imaging (fMRI) data and cost-effective electrophysiological (ERR) data while schizophrenia patients and healthy controls participate in a novel, ecologically valid paradigm that presents real-world goal- directed behaviors, conveyed in video clips. PUBLIC HEALTH RELEVANCE: This study may clarify the neurocognitive interpretation of the contributions of two candidate genes to the symptoms of schizophrenia. The results may direct future research of real-world knowledge acquisition in children at genetic risk for schizophrenia, with an ultimate goal to design early intervention treatments. They may help to develop a new endophenotype of schizophrenia to assist search for susceptibility genes of this disorder.
Funding Period: 2009-07-06 - 2015-03-31
more information: NIH RePORT

Top Publications

  1. pmc Neurocognitive mechanisms of conceptual processing in healthy adults and patients with schizophrenia
    Tatiana Sitnikova
    Department of Psychiatry, Harvard Medical School, Boston, MA, USA
    Int J Psychophysiol 75:86-99. 2010

Research Grants

Detail Information


  1. pmc Neurocognitive mechanisms of conceptual processing in healthy adults and patients with schizophrenia
    Tatiana Sitnikova
    Department of Psychiatry, Harvard Medical School, Boston, MA, USA
    Int J Psychophysiol 75:86-99. 2010

Research Grants30

  1. Defining and Treating Written Language Disabilities
    VIRGINIA WISE BERNINGER; Fiscal Year: 2013
    ..The proposed multidisciplinary research has practical significance for improving diagnosis and providing more effective services which may lower such risks. ..
  2. Functional Neuroimaging of Individual Differences in Affect and Motivation
    BRIAN JAMES MICKEY; Fiscal Year: 2013
    ..At the same time, the project will address important, testable questions about the neurobiology of genetic vulnerability to MDD, an identified public health priority. ..
  3. COBRE Center for Central Nervous System Function
    Jerome N Sanes; Fiscal Year: 2013
    ..The COBRE Center will leverage the administrative resources available through the Brown Institute for Brain Science to ensure efficient operation and coordinate with other brain science research activities at Brown. ..
  4. Vermont Center on Behavior and Health
    Stephen T Higgins; Fiscal Year: 2013
    ..S. public health. ..
  5. Early Experience, Stress and Neurobehavioral Development Center
    Megan R Gunnar; Fiscal Year: 2013
    ..Our Center also includes a cross-training program in basic developmental science and developmental psychopathology &prevention science. ..
  6. Neural mechanisms for antisaccade errors among schizophrenia families
    Brett A Clementz; Fiscal Year: 2013
    ..It is expected this pattern will be disrupted in people with schizophrenia and their relatives. ..