PMID- 16890377 OWN - NLM STAT- MEDLINE DCOM- 20061012 LR - 20151119 IS - 0306-4530 (Print) IS - 0306-4530 (Linking) VI - 31 IP - 8 DP - 2006 Sep TI - Brain-derived neurotrophic factor Val66Met polymorphism and dexamethasone/CRH test results in depressed patients. PG - 1019-25 AB - Data suggest that both neurotrophic and hypothalamic-pituitary-adrenocortical (HPA) systems are involved in the pathophysiology of depression. The aim of the present study was to investigate whether the non-conservative brain-derived neurotrophic factor (BDNF) Val66Met polymorphism has an impact on HPA axis activity in depressed patients. At admission, the dexamethasone/CRH (DEX/CRH) test was performed in 187 drug-free in-patients suffering from major depression or depressed state of bipolar disorder (DSM-IV criteria). Moreover, genotyping of BDNF Val66Met polymorphism was carried out using the fluorescence resonance energy transfer method (FRET). Homozygous carriers of the Met/Met genotype showed a significantly higher HPA axis activity during the DEX/CRH test than patients carrying the Val/Val or Val/Met genotype (ACTH, cortisol). Our results further contribute to the hypothesized association between HPA axis dysregulation and reduced neuroplasticity in depression and are consistent with the assumption that BDNF is a stress-responsive intercellular messenger modifying HPA axis activity. FAU - Schule, Cornelius AU - Schule C AD - Department of Psychiatry and Psychotherapy, Ludwig-Maximilian-University of Munich, Nussbaumstr. 7, 80336 Munich, Germany. Cornelius.Schuele@med.uni-muenchen.de FAU - Zill, Peter AU - Zill P FAU - Baghai, Thomas C AU - Baghai TC FAU - Eser, Daniela AU - Eser D FAU - Zwanzger, Peter AU - Zwanzger P FAU - Wenig, Nadine AU - Wenig N FAU - Rupprecht, Rainer AU - Rupprecht R FAU - Bondy, Brigitta AU - Bondy B LA - eng PT - Journal Article PL - England TA - Psychoneuroendocrinology JT - Psychoneuroendocrinology JID - 7612148 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 7S5I7G3JQL (Dexamethasone) RN - 9002-60-2 (Adrenocorticotropic Hormone) RN - 9015-71-8 (Corticotropin-Releasing Hormone) RN - WI4X0X7BPJ (Hydrocortisone) SB - IM MH - Adrenocorticotropic Hormone/blood MH - Adult MH - Amino Acid Substitution MH - Bipolar Disorder/psychology MH - Brain-Derived Neurotrophic Factor/*genetics MH - *Corticotropin-Releasing Hormone MH - Depressive Disorder/*genetics/*psychology MH - Depressive Disorder, Major/psychology MH - *Dexamethasone MH - Female MH - Genotype MH - Humans MH - Hydrocortisone/metabolism MH - Hypothalamo-Hypophyseal System/physiology MH - Male MH - Middle Aged MH - Polymorphism, Genetic MH - Psychiatric Status Rating Scales EDAT- 2006/08/08 09:00 MHDA- 2006/10/13 09:00 CRDT- 2006/08/08 09:00 PHST- 2006/04/11 00:00 [received] PHST- 2006/06/14 00:00 [revised] PHST- 2006/06/20 00:00 [accepted] PHST- 2006/08/08 09:00 [pubmed] PHST- 2006/10/13 09:00 [medline] PHST- 2006/08/08 09:00 [entrez] AID - S0306-4530(06)00112-0 [pii] AID - 10.1016/j.psyneuen.2006.06.002 [doi] PST - ppublish SO - Psychoneuroendocrinology. 2006 Sep;31(8):1019-25. doi: 10.1016/j.psyneuen.2006.06.002.