PMID- 17553570 OWN - NLM STAT- MEDLINE DCOM- 20080430 LR - 20220409 IS - 0165-0327 (Print) IS - 0165-0327 (Linking) VI - 105 IP - 1-3 DP - 2008 Jan TI - Plasma and serum brain-derived neurotrophic factor (BDNF) in depressed patients during 1 year of antidepressant treatments. PG - 279-83 AB - BACKGROUND: Brain-derived neurotrophic factor (BDNF) has been hypothesized to be involved in the neurobiology of major depression. The aim of this study was to assess the possible relationships between depressive symptoms and serum and/or plasma BDNF levels during 1 year of antidepressant treatment. METHODS: Plasma and serum BDNF levels were assayed in 15 drug-free depressed patients and in 15 healthy control subjects at baseline and the 1st, 3rd, 6th and 12th month of antidepressant treatment. RESULTS: At baseline, patients' serum and plasma BDNF levels were significantly lower (p<.001 and p=.004, respectively) than those found in healthy control subjects. However, while from the 1st month of treatment patients' plasma BDNF levels did not differ significantly from those observed in healthy control subjects, serum BDNF levels in patients remained significantly lower at all times. LIMITATIONS: The main limitations of the current study are represented by the small sample size and the high discontinuation rate. CONCLUSIONS: Untreated depressed patients showed reduced baseline serum and plasma BDNF levels, as compared with control subjects. The clinical improvement paralleled the normalization of plasma BDNF after 1 month of treatment, while, at every assessment time, patients' serum BDNF levels were lower than those of control subjects. This would suggest that serum BDNF might represent a non-specific trait marker of depression. FAU - Piccinni, Armando AU - Piccinni A AD - Dipartimento di Psichiatria, Neurobiologia, Farmacologia e Biotecnologie, University of Pisa, Pisa, Italy. a.piccini@med.unipi.it FAU - Marazziti, Donatella AU - Marazziti D FAU - Catena, Mario AU - Catena M FAU - Domenici, Luciano AU - Domenici L FAU - Del Debbio, Alessandro AU - Del Debbio A FAU - Bianchi, Carolina AU - Bianchi C FAU - Mannari, Claudio AU - Mannari C FAU - Martini, Claudia AU - Martini C FAU - Da Pozzo, Eleonora AU - Da Pozzo E FAU - Schiavi, Elisa AU - Schiavi E FAU - Mariotti, Alessandra AU - Mariotti A FAU - Roncaglia, Isabella AU - Roncaglia I FAU - Palla, Agnese AU - Palla A FAU - Consoli, Giorgio AU - Consoli G FAU - Giovannini, Luca AU - Giovannini L FAU - Massimetti, Gabriele AU - Massimetti G FAU - Dell'Osso, Liliana AU - Dell'Osso L LA - eng PT - Journal Article DEP - 20070605 PL - Netherlands TA - J Affect Disord JT - Journal of affective disorders JID - 7906073 RN - 0 (Antidepressive Agents) RN - 0 (Brain-Derived Neurotrophic Factor) SB - IM MH - Antidepressive Agents/*therapeutic use MH - Brain-Derived Neurotrophic Factor/*blood MH - Depressive Disorder, Major/*blood/diagnosis/*drug therapy MH - Female MH - Humans MH - Male MH - Middle Aged MH - Time Factors EDAT- 2007/06/08 09:00 MHDA- 2008/05/01 09:00 CRDT- 2007/06/08 09:00 PHST- 2007/03/12 00:00 [received] PHST- 2007/05/07 00:00 [revised] PHST- 2007/05/07 00:00 [accepted] PHST- 2007/06/08 09:00 [pubmed] PHST- 2008/05/01 09:00 [medline] PHST- 2007/06/08 09:00 [entrez] AID - S0165-0327(07)00176-0 [pii] AID - 10.1016/j.jad.2007.05.005 [doi] PST - ppublish SO - J Affect Disord. 2008 Jan;105(1-3):279-83. doi: 10.1016/j.jad.2007.05.005. Epub 2007 Jun 5.