PMID- 26598587 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20151124 LR - 20200930 IS - 1738-1088 (Print) IS - 2093-4327 (Electronic) IS - 1738-1088 (Linking) VI - 13 IP - 3 DP - 2015 Dec 31 TI - Brain-derived Neurotrophic Factor Is Associated with Cognitive Impairment in Elderly Korean Individuals. PG - 283-7 LID - 10.9758/cpn.2015.13.3.283 [doi] AB - OBJECTIVE: Brain-derived neurotrophic factor (BDNF) is a neurotrophin that is widely expressed in the mammalian brain and acts to regulate neuronal survival and influence cognitive processes. The present study measured serum BDNF levels to investigate the associations of the BDNF Val66Met and 5-hydroxytryptamine transporter linked promoter region (5-HTTLPR) polymorphisms with cognitive function in elderly Korean individuals. METHODS: Over 60 years, a total of 834 subjects were recruited for the present study. The subjects were classified into groups based on the degree of cognitive impairment (age-associated cognitive decline, mild cognitive impairment, and Alzheimer's disease) and compared with normal controls in terms of a neuropsychological assessment and a clinical evaluation. RESULTS: Of the initial 834 study participants, 165 (59 controls and 106 subjects with cognitive impairments) completed the study. There was a significant increase in serum BDNF levels in subjects with cognitive impairments relative to the control group and the BDNF Val66Met polymorphism was significantly associated with cognitive function but not serum BDNF levels. The 5-HTTLPR polymorphism did not have any associations with cognitive impairment or serum BDNF levels. CONCLUSION: The present findings suggest that BDNF may play a role in the pathophysiology of cognitive impairment and the BDNF Val66Met polymorphism may be an important factor in the susceptibility to these age-related deficits. FAU - Lee, Sang Jun AU - Lee SJ AD - Department of Psychiatry, Inje University Haeundae Paik Hospital, Busan, Korea. FAU - Baek, Jun-Hyung AU - Baek JH AD - Department of Psychiatry, Inje University Haeundae Paik Hospital, Busan, Korea. FAU - Kim, Young-Hoon AU - Kim YH AD - Department of Psychiatry, Inje University Haeundae Paik Hospital, Busan, Korea. AD - Paik Institute for Clinical Research, Inje University College of Medicine, Busan, Korea. LA - eng PT - Journal Article PL - Korea (South) TA - Clin Psychopharmacol Neurosci JT - Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology JID - 101207332 PMC - PMC4662173 OTO - NOTNLM OT - Brain-derived neurotrophic factor OT - Cognition OT - Dementia OT - Genetic polymorphism EDAT- 2015/11/26 06:00 MHDA- 2015/11/26 06:01 PMCR- 2015/12/01 CRDT- 2015/11/25 06:00 PHST- 2014/11/12 00:00 [received] PHST- 2015/03/03 00:00 [revised] PHST- 2015/06/22 00:00 [accepted] PHST- 2015/11/25 06:00 [entrez] PHST- 2015/11/26 06:00 [pubmed] PHST- 2015/11/26 06:01 [medline] PHST- 2015/12/01 00:00 [pmc-release] AID - cpn.2015.13.3.283 [pii] AID - cpn-13-283 [pii] AID - 10.9758/cpn.2015.13.3.283 [doi] PST - ppublish SO - Clin Psychopharmacol Neurosci. 2015 Dec 31;13(3):283-7. doi: 10.9758/cpn.2015.13.3.283.