期刊
FRONTIERS IN GENETICS
卷 9, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fgene.2018.00583
关键词
bipolar II disorder; BDNF genotype; plasma concentrations of BDNF; memory; auditory delayed memory
资金
- Taiwan Ministry of Science and Technology [MOST 105-2410-H-468-001, MOST 106-2410-H-468-012-MY2]
- Taiwan National Science Council [NSC102-2622-B-006-002-CC2, NSC100-2314-B-075B-010-MY3]
Studies suggest that a functional polymorphism of brain-derived neurotrophic factor (BDNF), polymorphism BDNF Val(66)Met affects cognitive functions, however, the effect is unclear in bipolar II (BD II)disorder. We used the Wechsler Memory Scale-third edition (WMS-III), the presence of the BDNF Val(66)Met polymorphism, and plasma concentrations of BDNF to investigate the association between memory impairment and BDNF in BD-II disorder. We assessed the memory functions of 228 BD-II patients and 135 healthy controls (HCs). BD-II patients had significantly lower scores on five of the eight VVMS-III subscales. In addition to education, the BDNF polymorphism were associated with the following subscales of VVMS-III, auditory delayed memory, auditory delayed recognition memory and general memory scores in BD-II patients, but not in HC. Moreover, BD-II patients with the Val-homozygote scored significantly higher on the visual immediate memory subscale than did those with the Met/Met and Val/Met polymorphisms. The significantly positive effect of the Vai-homozygote did not have a significantly positive effect on memory in the HC group, however. We found no significant association between BDNF polymorphisms and plasma concentrations of BDNF. The plasma BDNF was more likely to be associated with clinical characteristics than it was with memory indices in the BD-II group. The impaired memory function in BD-II patients might be dependent upon the association between the BDNF Val(66)Met polymorphism and peripheral BDNF levels.
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