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Previous research reported an age‐related decline in brain norepinephrine transporter (NET) using (S, S)‐[11C]O‐methylreboxetine ([11C]MRB) as a radiotracer. Studies with the same tracer have been mixed in regard to differences related to body mass index (BMI). Here, we investigated potential age‐, BMI‐, and gender‐related differences in brain NET availability using [11C]MRB, the most selective available...
The neurotransmitter dopamine is present in the retina and is involved in several modulatory functions. Unlike in rodents, dopamine D3 receptors are expressed in the retina of humans. Recently, uptake of the D3 receptor‐preferring radiotracer [11C]‐(+)‐PHNO has been observed in a retina‐like region of interest (ROI) in humans. Here, we attempted to quantify [11C]‐(+)‐PHNO uptake into this ROI using...
We aimed to characterize changes in binding of (‐)‐[18F]Flubatine to α4β2*‐nicotinic acetylcholine receptors (α4β2*‐nAChRs) during a tobacco cigarette smoking challenge. Displacement of (‐)‐[18F]Flubatine throughout the brain was quantified as change in (‐)‐[18F]Flubatine distribution volume (VT), with particular emphasis on regions with low VT. Three tobacco smokers were imaged with positron emission...
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