Veterinärmedizinische Universität Wien Forschungsinformationssystem VetDoc

Grafischer Link zur Startseite der Vetmeduni Vienna

Gewählte Publikation:

Open Access Logo

Publikationstyp: Zeitschriftenaufsatz
Dokumentart: Originalarbeit

Publikationsjahr: 2008

AutorInnen: Zitterl, W; Aigner, M; Stompe, T; Zitterl-Eglseer, K; Gutierrez-Lobos, K; Wenzel, T; Zettinig, G; Hornik, K; Pirker, W; Thau, K

Titel: Changes in thalamus-hypothalamus serotonin transporter availability during clomipramine administration in patients with obsessive-compulsive disorder.

Quelle: Neuropsychopharmacology. 2008; 33(13):3126-3134



Autor/innen der Vetmeduni Vienna:

Zitterl-Eglseer Karin

Beteiligte Vetmed-Organisationseinheiten
Institut für Tierernährung und funktionelle Pflanzenstoffe


Abstract:
To the authors" knowledge there is as of yet no study demonstrating in vivo alterations in human serotonin transporters (SERT) during clomipramine treatment in patients with obsessive-compulsive disorder. The only study in which SERT binding has been investigated in obsessive-compulsive disorder (OCD) patients before and after treatment is a small pilot study by Stengler-Wenzke et al (2006), who treated five OCD patients with citalopram. In the study at hand, we measured transporter availability in the thalamus-hypothalamus with [(123)I] beta-CIT single photon emission computed tomography (SPECT) in 24 patients with DSM-IV OCD. All patients displayed prominent behavioral checking compulsions (OC-checkers). At baseline and upon medication after 12 weeks of treatment with clomipramine (150 mg daily) 24 non-depressed OC-checkers underwent a SPECT measurement of brain SERT availability using [(123)I]-2beta-carbomethoxy-3beta-(4-iodophenyl)tropane. For quantification of brain serotonin transporter availability, a ratio of specific to non-displaceable [(123)I] beta-CIT brain binding was used (BP(ND)=(thalamus and hypothalamus-cerebellum)/cerebellum). The SERT availability was compared between baseline and after treatment and correlated with severity of OC symptomatology and treatment response as assessed with the Yale-Brown Obsessive Compulsive Scale (Y-BOCS). After treatment with clomipramine patients showed a 48% reduced brain serotonin transporter availability in the thalamus-hypothalamus, as compared with values at baseline (0.72+/-0.12 vs 1.39+/-0.18, p<0.001). Correlations between brain SERT availability and OC symptomatology (Y-BOCS scores) revealed significantly negative associations both at baseline and after treatment (r=-0.46; p<0.05 and r=-0.53; p<0.01 respectively). These data suggest that the SERT availability values could be considered a biological indicator of disease severity. Moreover, in search of predictors we found that higher pretreatment SERT availability significantly predicted better treatment response 12 weeks later (B=14.145+/-4.514; t=3.133; p=0.005). These results provide further support for an important role of alterations in serotonergic neurons in the pathophysiology of OCD.

Keywords Pubmed: Adult
Binding, Competitive/drug effects
Binding, Competitive/physiology
Citalopram/diagnostic use
Clomipramine/pharmacology*
Down-Regulation/drug effects
Down-Regulation/physiology
Female
Humans
Hypothalamus/drug effects*
Hypothalamus/metabolism
Hypothalamus/radionuclide imaging
Iodine Radioisotopes/diagnostic use
Male
Middle Aged
Obsessive-Compulsive Disorder/drug therapy*
Obsessive-Compulsive Disorder/metabolism
Obsessive-Compulsive Disorder/radionuclide imaging
Serotonin/metabolism*
Serotonin Plasma Membrane Transport Proteins/drug effects*
Serotonin Plasma Membrane Transport Proteins/metabolism
Serotonin Uptake Inhibitors/pharmacology
Thalamus/drug effects*
Thalamus/metabolism
Thalamus/radionuclide imaging
Tomography, Emission-Computed, Single-Photon
Treatment Outcome
Young Adult


© Veterinärmedizinische Universität Wien Hilfe und Downloads