PMID- 17662528 OWN - NLM STAT- MEDLINE DCOM- 20071203 LR - 20131121 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 423 IP - 1 DP - 2007 Aug 9 TI - Increased plasma brain-derived neurotrophic factor levels in chronic smokers following unaided smoking cessation. PG - 53-7 AB - Recent animal studies have suggested an association between nicotine and alterations in brain-derived neurotrophic factor (BDNF) expression levels. However, the role of BDNF in humans with nicotine dependence has not yet been investigated. In this study, we explored the differences in the plasma BDNF levels of chronic smokers and healthy nonsmokers, and we investigated the changes in plasma BDNF levels in chronic smokers following unaided smoking cessation. Forty voluntary participants (20 smokers and 20 nonsmokers) were enrolled in this study. We measured the plasma BDNF levels at baseline (both groups) and at the end of the two-month study period (smoker group only) using an enzyme-linked immunosorbent assay. A total of 12 smokers (60.0%) completed the two-month study. ANCOVA with age and body mass index as covariates showed that the baseline plasma BDNF levels in smokers were significantly lower than those in nonsmokers (F=4.626, p=0.038). The plasma BDNF levels in the smokers significantly increased from baseline after the two-month smoking cessation period (Z=-3.059, p=0.002). These findings suggest that BDNF may play a role in the pathophysiology of smoking behavior. FAU - Kim, Tae-Suk AU - Kim TS AD - Department of Psychiatry, Holy Family Hospital, The Catholic University of Korea, College of Medicine, 2 Sosa-dong, Wonmi-gu, Pucheon City, Kyunggi-do 420-717, Republic of Korea. FAU - Kim, Dai-Jin AU - Kim DJ FAU - Lee, Heejin AU - Lee H FAU - Kim, Yong-Ku AU - Kim YK LA - eng PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20070704 PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 7U1EE4V452 (Carbon Monoxide) SB - IM MH - Adult MH - Brain-Derived Neurotrophic Factor/*blood MH - Carbon Monoxide/metabolism MH - Chronic Disease MH - Enzyme-Linked Immunosorbent Assay MH - Humans MH - Male MH - Smoking/*blood/metabolism MH - *Smoking Cessation EDAT- 2007/07/31 09:00 MHDA- 2007/12/06 09:00 CRDT- 2007/07/31 09:00 PHST- 2007/04/06 00:00 [received] PHST- 2007/05/17 00:00 [revised] PHST- 2007/05/23 00:00 [accepted] PHST- 2007/07/31 09:00 [pubmed] PHST- 2007/12/06 09:00 [medline] PHST- 2007/07/31 09:00 [entrez] AID - S0304-3940(07)00643-X [pii] AID - 10.1016/j.neulet.2007.05.064 [doi] PST - ppublish SO - Neurosci Lett. 2007 Aug 9;423(1):53-7. doi: 10.1016/j.neulet.2007.05.064. Epub 2007 Jul 4.