PMID- 31083054 OWN - NLM STAT- MEDLINE DCOM- 20200513 LR - 20200513 IS - 1534-7796 (Electronic) IS - 0033-3174 (Linking) VI - 81 IP - 6 DP - 2019 Jul/Aug TI - Association of Brain-Derived Neurotrophic Factor With Cognitive Function: An Investigation of Sex Differences in Patients With Type 2 Diabetes. PG - 488-494 LID - 10.1097/PSY.0000000000000709 [doi] AB - OBJECTIVE: Although a reduction in brain-derived neurotrophic factor (BDNF) has been implicated as a cause of cognitive impairment in type 2 diabetes mellitus (T2DM), the role of sex in moderating this effect has not been explored. METHODS: We compared the difference in serum BDNF and performance on the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) between 96 men and 134 women with T2DM. We compared this with the difference in serum BDNF and performance in the control group (104 men, 144 women). RESULTS: Patients with T2DM performed worse on most RBANS indices (eta = 0.372, all p < .05); within T2DM patients, men performed worse than women on the delayed memory score (74.1 (12.1) versus 79.9 (11.5), p = .002) and on the total score (71.4 (11.5) versus 76.5 (10.8), p = .025). Serum BDNF was lower in patients with T2DM versus controls (7.5 (2.7) ng/ml versus 11.5 (2.7) ng/ml, p < .001), and in men compared with women (6.9 (2.4) versus 7.9 (2.8), p = .024). Serum BDNF levels positively correlated with delayed memory score in patients with T2DM (beta = 0.19, p = .007). However, this association was only observed in women, not in men (pinteraction = 0.04). Among healthy controls, no sex differences were noted in either RBANS or BDNF levels (eta = 0.04, Cohen's d < 0.163, all p > .05). CONCLUSIONS: Our results show sex differences in poorer cognitive performance, lower BDNF concentration, and their relationship in T2DM patients, suggesting that female sex may be a protective factor for cognitive decline in T2DM patients. However, the findings should be regarded as preliminary because of the cross-sectional design and chronicity of the diabetes. FAU - Zhen, Yan-Feng AU - Zhen YF AD - From the Departments of Endocrinology (Zhen, Li, Fang) and Neurosurgery (Liu), Tangshan Gongren Hospital, Tangshan, China; the Department of Psychiatry and Behavioral Sciences (Cassidy), The University of Texas Health Science Center at Houston, Texas; and CAS Key Laboratory of Mental Health (Zhang), Institute of Psychology, Chinese Academy of Sciences, Beijing, China. FAU - Liu, Xing-Yu AU - Liu XY FAU - Li, Yu-Kai AU - Li YK FAU - Fang, Hui AU - Fang H FAU - Cassidy, Ryan M AU - Cassidy RM FAU - Zhang, Xiang Yang AU - Zhang XY LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Psychosom Med JT - Psychosomatic medicine JID - 0376505 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 7171WSG8A2 (BDNF protein, human) SB - IM MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Case-Control Studies MH - *Cognition MH - Cognitive Dysfunction/metabolism/*psychology MH - Cross-Sectional Studies MH - Diabetes Mellitus, Type 2/metabolism/*psychology MH - Female MH - Humans MH - Male MH - Middle Aged MH - Neuropsychological Tests MH - Sex Factors EDAT- 2019/05/15 06:00 MHDA- 2020/05/14 06:00 CRDT- 2019/05/15 06:00 PHST- 2019/05/15 06:00 [pubmed] PHST- 2020/05/14 06:00 [medline] PHST- 2019/05/15 06:00 [entrez] AID - 10.1097/PSY.0000000000000709 [doi] PST - ppublish SO - Psychosom Med. 2019 Jul/Aug;81(6):488-494. doi: 10.1097/PSY.0000000000000709.