Abstract
Objective
Studies suggest that brain-derived neurotrophic factor (BDNF) plays an essential role in regulating memory-related neuroplasticity in the hippocampus. Type 2 diabetes (T2DM) is associated with impairment in many domains of cognitive function which may result from reduced BDNF; however, the correlation of BDNF with cognitive impairment in T2DM has not been investigated.
Materials and methods
We compared 208 patients with T2DM to 212 normal controls on serum BDNF and the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS).
Results
Serum BDNF levels were significantly decreased in T2DM patients compared to normal controls (p < 0.001). The total score and nearly all indexes (all p < 0.01) except for attention and visuospatial/constructional indexes (all p > 0.05) of RBANS were markedly lower in T2DM than controls. There was a positive relationship between serum BDNF and delayed memory in patients with T2DM.
Conclusion
Our results suggest that BDNF may play a role in the pathophysiology of cognitive deficits, especially delayed memory in T2DM.
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Acknowledgments
Funding for this study was provided by grants from the Stanley Medical Research Institute (03 T-459 and 05 T-726) and the Department of Veterans Affairs, VISN 16, Mental Illness Research, Education and Clinical Center (MIRECC), United States National Institute of Health K05-DA0454, P50-DA18827, and U01-MH79639. These sources had no further role in study design; in the collection, analysis and interpretation of data; in the writing of the report; and in the decision to submit the paper for publication.
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Zhen, Y.F., Zhang, J., Liu, X.Y. et al. Low BDNF is associated with cognitive deficits in patients with type 2 diabetes. Psychopharmacology 227, 93–100 (2013). https://doi.org/10.1007/s00213-012-2942-3
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DOI: https://doi.org/10.1007/s00213-012-2942-3