Potential for imaging the high-affinity state of the 5-HT1B receptor: a comparison of three PET radioligands with differing intrinsic activity.
Anton LindbergRyosuke ArakawaTsuyoshi NogamiSangram NagMagnus SchouCharles S ElmoreLars FardeVictor W PikeChrister HalldinPublished in: EJNMMI research (2019)
Three 5-HT1B PET radioligands were identified with differing intrinsic activity that could be used in imaging high- and low-affinity states of 5-HT1B receptors using PET. From this limited study, radioligand sensitivity to endogenous 5-HT appears to depend on agonist efficacy. More extensive studies are required to substantiate this suggestion.