Benzodiazepine receptors studied in living primates by positron emission tomography: inverse agonist interactions

1987 ◽  
Vol 138 (2) ◽  
pp. 239-247 ◽  
Author(s):  
Philippe Hantraye ◽  
Chantal Chavoix ◽  
Bernard Guibert ◽  
Hiroshi Fukuda ◽  
Emmanuel Brouillet ◽  
...  
Author(s):  
C. Chavoix ◽  
Y. Samson ◽  
S. Pappata ◽  
C. Prenant ◽  
M. Mazière ◽  
...  

ABSTRACT:Central type benzodiazepine receptors were studied in 9 patients with Friedreich's ataxia and 12 healthy subjects using positron emission tomography (PET) and [11C]Ro 15-1788, a specific antagonist of the central type benzodiazepine receptors, as radioligand. A standard PET procedure was used in 5 patients and 8 controls to obtain brain kinetics of the total binding of the radioligand. The remaining subjects were intravenously injected with a saturating dose of unlabeled Ro 15-1788, 30 minutes after the tracer injection, to determine the nondisplaceable binding of [11C]Ro 15-1788. A semi-quantitative method was used to quantify the [11C]Ro 15-1788 data. None of the quantification indices in the cerebellar hemispheres, or in the other brain areas investigated, was significantly modified in patients with Friedreich's ataxia. These findings suggest that brain benzodiazepine receptors are unaffected in Friedreich's ataxia.


NeuroImage ◽  
2009 ◽  
Vol 48 (2) ◽  
pp. 362-370 ◽  
Author(s):  
Garth E. Terry ◽  
Jeih-San Liow ◽  
Sami S. Zoghbi ◽  
Jussi Hirvonen ◽  
Amanda G. Farris ◽  
...  

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