PMID- 19429034 OWN - NLM STAT- MEDLINE DCOM- 20090622 LR - 20151119 IS - 1872-7972 (Electronic) IS - 0304-3940 (Linking) VI - 453 IP - 3 DP - 2009 Apr 10 TI - Serum brain-derived neurotrophic factor (BDNF) is not associated with response to electroconvulsive therapy (ECT): a pilot study in drug resistant depressed patients. PG - 195-8 LID - 10.1016/j.neulet.2009.02.032 [doi] AB - Refractory depression is a highly debilitating mental condition that originates major social and economic burden. About 50% of the patients experience a chronic course of illness and up to 20% show an insufficient response to drug treatments. Electroconvulsive therapy (ECT) is the most effective treatment method in refractory depression, although its mechanism of action is still unknown. Brain-derived neurotrophic factor (BDNF) is decreased in depressive episodes, and increases with antidepressant treatment, being suggested as a biomarker of response to ECT. We report the findings of a study on the effects of ECT on BDNF and clinical outcomes in a group of drug resistant depressive patients before and after ECT. The patients post-ECTs have shown an important improvement of depressive symptomatology on the HDRS (p=0.001), of psychotic features on the BPRS (p=0.001) and of the severity of illness on the CGI (p=0.001). There were no changes in the serum BDNF before and after the ECT treatment (p=0.89). These results do not support the hypothesis that the clinical improvement following ECT is due to changes in the BDNF. FAU - Fernandes, Brisa AU - Fernandes B AD - Bipolar Disorder Program, Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil. FAU - Gama, Clarissa S AU - Gama CS FAU - Massuda, Rafael AU - Massuda R FAU - Torres, Mariana AU - Torres M FAU - Camargo, Daniel AU - Camargo D FAU - Kunz, Mauricio AU - Kunz M FAU - Belmonte-de-Abreu, Paulo Silva AU - Belmonte-de-Abreu PS FAU - Kapczinski, Flavio AU - Kapczinski F FAU - de Almeida Fleck, Marcelo Pio AU - de Almeida Fleck MP FAU - Ines Lobato, Maria AU - Ines Lobato M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090221 PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Biomarkers) RN - 0 (Brain-Derived Neurotrophic Factor) SB - IM MH - Biomarkers/blood MH - Bipolar Disorder/blood/physiopathology/*therapy MH - Brain-Derived Neurotrophic Factor/*blood MH - Depressive Disorder/blood/physiopathology/*therapy MH - Drug Resistance MH - *Electroconvulsive Therapy MH - Female MH - Humans MH - Male MH - Middle Aged MH - Pilot Projects MH - Severity of Illness Index EDAT- 2009/05/12 09:00 MHDA- 2009/06/23 09:00 CRDT- 2009/05/12 09:00 PHST- 2009/01/26 00:00 [received] PHST- 2009/02/18 00:00 [revised] PHST- 2009/02/18 00:00 [accepted] PHST- 2009/05/12 09:00 [entrez] PHST- 2009/05/12 09:00 [pubmed] PHST- 2009/06/23 09:00 [medline] AID - S0304-3940(09)00208-0 [pii] AID - 10.1016/j.neulet.2009.02.032 [doi] PST - ppublish SO - Neurosci Lett. 2009 Apr 10;453(3):195-8. doi: 10.1016/j.neulet.2009.02.032. Epub 2009 Feb 21.