PMID- 29944703 OWN - NLM STAT- MEDLINE DCOM- 20181217 LR - 20240327 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 13 IP - 6 DP - 2018 TI - Association of serum BDNF levels and the BDNF Val66Met polymorphism with the sleep pattern in healthy young adults. PG - e0199765 LID - 10.1371/journal.pone.0199765 [doi] LID - e0199765 AB - BACKGROUND: Brain-derived neurotrophic factor (BDNF) is widely expressed in the brain and plays an important role in neuronal maintenance, plasticity, and neurogenesis. Prior studies have found that decreased serum BDNF levels are associated with perceived stress, depression, or sleep disturbances in humans. STUDY OBJECTIVES: To elucidate whether the serum BDNF levels and BDNF genotype were associated with the sleep pattern in healthy young adults. METHODS: The study group consisted of 79 healthy paid volunteers (45 men, 34 women) aged 20 to 29 years. Serum BDNF levels were measured with an enzyme-linked immunosorbent assay, and a single-nucleotide polymorphism (Val66Met) in the BDNF gene was assessed with a TaqMan assay. Details of the sleep pattern were obtained from 1-week sleep/wake records. RESULTS: Serum BDNF levels were significantly associated with sleep parameters on weekends, whereas no such association was found on weekdays. On weekends, longer total sleep time and time in bed, and later mid-sleep time were associated with lower serum BDNF levels. The difference between mid-sleep time on weekdays and that on weekends, otherwise known as social jetlag, was negatively associated with serum BDNF levels. Met/Met homozygotes of the BDNF Val66Met polymorphism had significantly longer time in bed on weekends than Val/Val homozygotes. Heterozygotes did not differ from Val/Val homozygotes. CONCLUSIONS: We first found that serum BDNF levels and the BDNF Val66Met polymorphism in healthy young adults were associated with the sleep pattern on weekends but not with that on weekdays, suggesting that the systems involved in BDNF control may be linked to endogenous sleep characteristics rather than the socially constrained sleep schedule in healthy young adults. FAU - Saitoh, Kaori AU - Saitoh K AD - Department of Psychiatry, Nihon University School of Medicine, Tokyo, Japan. FAU - Furihata, Ryuji AU - Furihata R AD - Department of Psychiatry, Nihon University School of Medicine, Tokyo, Japan. FAU - Kaneko, Yoshiyuki AU - Kaneko Y AD - Department of Psychiatry, Nihon University School of Medicine, Tokyo, Japan. FAU - Suzuki, Masahiro AU - Suzuki M AUID- ORCID: 0000-0002-3873-8727 AD - Department of Psychiatry, Nihon University School of Medicine, Tokyo, Japan. FAU - Takahashi, Sakae AU - Takahashi S AD - Department of Psychiatry, Nihon University School of Medicine, Tokyo, Japan. FAU - Uchiyama, Makoto AU - Uchiyama M AD - Department of Psychiatry, Nihon University School of Medicine, Tokyo, Japan. LA - eng PT - Clinical Trial PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180626 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 7171WSG8A2 (BDNF protein, human) SB - IM EIN - PLoS One. 2018 Aug 2;13(8):e0201994. PMID: 30071105 MH - Adult MH - Amino Acid Substitution MH - *Brain-Derived Neurotrophic Factor/blood/genetics MH - Female MH - Humans MH - Male MH - *Polymorphism, Single Nucleotide MH - Sleep/*physiology PMC - PMC6019675 COIS- The authors have declared that no competing interests exist. EDAT- 2018/06/27 06:00 MHDA- 2018/12/18 06:00 PMCR- 2018/06/26 CRDT- 2018/06/27 06:00 PHST- 2018/04/10 00:00 [received] PHST- 2018/06/13 00:00 [accepted] PHST- 2018/06/27 06:00 [entrez] PHST- 2018/06/27 06:00 [pubmed] PHST- 2018/12/18 06:00 [medline] PHST- 2018/06/26 00:00 [pmc-release] AID - PONE-D-18-10721 [pii] AID - 10.1371/journal.pone.0199765 [doi] PST - epublish SO - PLoS One. 2018 Jun 26;13(6):e0199765. doi: 10.1371/journal.pone.0199765. eCollection 2018.