EFFECT OF BDNF VAL66MET POLYMORPHISM ON BRAIN ANATOMY IN FIRST EPISODE SCHIZOPHRENIA

2008 ◽  
Vol 102 (1-3) ◽  
pp. 83 ◽  
Author(s):  
T. van Amelsvoort ◽  
N. Schmitz ◽  
J. Zinkstok ◽  
L. de Haan ◽  
F. Baas ◽  
...  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jiahong Liu ◽  
Pingping Wang ◽  
Leilei Sun ◽  
Xiaoni Guan ◽  
Meihong Xiu ◽  
...  

AbstractA growing number of studies have shown that brain-derived neurotrophic factor (BDNF) is associated with weight gain during antipsychotic treatment in schizophrenia patients. However, there is still a lack of research results in the initial stage of antipsychotic treatment. This study aimed to evaluate the relationship between weight gain caused by risperidone monotherapy for 12 weeks and BDNF level in antipsychotic-naive and first-episode (ANFE) patients with schizophrenia, and we hypothesize that this may depend on BDNF Val66Met gene polymorphism. In a 12-week longitudinal trial, 225 ANFE patients were enrolled and treated with risperidone. Body weight was measured at baseline and during the 12-week follow-up. After treatment, the average weight of ANFE patients increased by 2.6 kg. Furthermore, we found that in patients with Val/Val genotype, the increase in serum BDNF levels was negatively correlated with risperidone-induced weight gain (r = −0.44, p = 0.008). Regression analysis showed that the baseline BDNF level was a predictor of weight gain after treatment (β = −0.45, t = −3.0, p = 0.005). Our results suggest that the BDNF signaling may be involved in weight gain caused by risperidone treatment. Furthermore, the negative association between weight gain and increased BDNF levels during risperidone treatment in ANFE schizophrenia depends on the BDNF Val66Met polymorphism.


2016 ◽  
Vol 38 ◽  
pp. 61-69 ◽  
Author(s):  
G. Mezquida ◽  
R. Penadés ◽  
B. Cabrera ◽  
G. Savulich ◽  
A. Lobo ◽  
...  

AbstractObjectiveA functional polymorphism of the brain-derived neurotrophic factor gene (BDNF) Val66Met has been associated with cognitive function and symptom severity in patients with schizophrenia. It has been suggested that the Val66Met polymorphism has a role as a modulator in a range of clinical features of the illness, including symptoms severity, therapeutic responsiveness, age of onset, brain morphology and cognitive function. However, little work has been done in first-episode schizophrenia (FES) spectrum disorders. The objective of this study is to investigate the association of the BDNF Val66Met polymorphism on cognitive function and clinical symptomatology in FES patients.MethodsUsing a cross-sectional design in a cohort of 204 patients with FES or a schizophrenia spectrum disorder and 204 healthy matched controls, we performed BDNF Val66Met genotyping and tested its relationship with cognitive testing (attention, working memory, learning/verbal memory and reasoning/problem-solving) and assessment of clinical symptom severity.ResultsThere was no significant influence of the BDNF allele frequency on cognitive factor scores in either patients or controls. An augmented severity of negative symptoms was found in FES patients that carried the Met allele.ConclusionsThe results of this study suggest that in patients with a first-episode of schizophrenia or a schizophrenia spectrum disorder, the BDNF Val66Met polymorphism does not exert an influence on cognitive functioning, but is associated with negative symptoms severity. BDNF may serve as suitable marker of negative symptomatology severity in FES patients within the schizophrenia spectrum.


2010 ◽  
Vol 07 (01) ◽  
pp. 11-17
Author(s):  
A. Schmied ◽  
W. Kissling ◽  
J. M. Davis ◽  
S. Leucht

ZusammenfassungSeit etwa zehn Jahren gibt es eine kontrovers geführte Debatte über die Antipsychotika der zweiten Generation („second generation antipsychotics“, SGA) in der Schizophreniebehandlung, die in der Publikation der sogenannten Effektivitätsstudien CATIE (Clinical Antipsychotic Trial of Intervention Effectiveness), CUtLASS (Cost Utility of the Latest Antipsychotic Drugs in Schizophrenia Study) und EUFEST (European First-Episode Schizophrenia Trial) gipfelte. In der vorliegenden Übersicht fassen wir die Ergebnisse dreier aktueller systematischer Reviews zusammen, in denen die Antipsychotika der zweiten Generation (SGAs) mit Placebo, mit konventionellen Antipsychotika oder direkt miteinander verglichen wurden. Wir stellen die Metaanalysen in den Kontext anderer systematischer Reviews und beleuchten sie vor dem Hintergrund von CATIE, CUtLASS und EUFEST. Unserer Meinung nach sind viele Ergebnisse konsistent, sie werden aber von verschiedenen Experten und Interessensvertretern unterschiedlich interpretiert. Die Daten zeigen, dass SGAs keine homogene Gruppe darstellen und dass diese eher verwirrende Einteilung aufgegeben werden sollte. Unserer Meinung nach stellen die SGAs nicht den Durchbruch dar, den die Industrie gerne sehen würde. Ihre unterschiedlichen Eigenschaften erlauben aber eine bessere Ausrichtung des Behandlungsplans an den Problemen des individuellen Patienten. Diese Medikamente haben die Behandlungspalette deutlich erweitert und die meisten Psychiater, ganz zu schweigen von den Patienten, würden wohl nur sehr ungerne auf diese Präparate verzichten wollen.


Sign in / Sign up

Export Citation Format

Share Document