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Cognitive and Emotional Abnormalities in Systemic Lupus Erythematosus: Evidence for Amygdala Dysfunction

Abstract  

Systemic lupus erythematosus (SLE) is a multi-system autoimmune disorder characterized by the production of autoantibodies.
Approximately 30–50 % of patients produce autoantibodies directed against N-Methyl-D-aspartic acid receptors (NMDARs). Once they have gained access to brain tissue, these autoantibodies bind to the
NR2A subunit of the NMDARs and synergize with glutamate to cause excitatory, non-inflammatory cell death or alter neuron function.
Both humans with SLE and animal models of SLE have shown structural and functional damage to the amygdala. The amygdala is
a brain region important for processing the emotional relevance of stimuli in the environment. It also serves to modulate
perception, attention, and memory to facilitate the processing and learning of relevant stimuli. Research has linked amygdala
damage to deficits in emotional memory and emotional behavior. Individuals with SLE often exhibit emotional dysregulation,
such as lability and depression; however, the behavioral impact of possible amygdala dysfunction has yet to be studied in
this population. The purpose of this review is to 1) examine possible associations between SLE, anti-NMDAR antibodies, amygdala
damage, and emotional processing deficits and 2) to identify the clinical, social, and treatment implications for individuals
with SLE who suffer from deficits in emotional processing.

  • Content Type Journal Article
  • Category Review
  • Pages 1-19
  • DOI 10.1007/s11065-012-9213-2
  • Authors
    • Philip Watson, The Graduate Center and Queens College, City University of New York, Flushing, NY, USA
    • Justin Storbeck, The Graduate Center and Queens College, City University of New York, Flushing, NY, USA
    • Paul Mattis, The Feinstein Institute for Medical Research, Manhasset, NY, USA
    • Meggan Mackay, The Feinstein Institute for Medical Research, Manhasset, NY, USA
    • Journal Neuropsychology Review
    • Online ISSN 1573-6660
    • Print ISSN 1040-7308
Posted in: Journal Article Abstracts on 08/19/2012 | Link to this post on IFP |
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