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Characterization of [[.sup.11]C]Lu AE92686 as a PET radioligand for phosphodiesterase 10A in the nonhuman primate brain

Byline: Kai-Chun Yang (1), Vladimir Stepanov (1), Nahid Amini (1), Stefan Martinsson (1), Akihiro Takano (1), Jacob Nielsen (2), Christoffer Bundgaard (3), Benny Bang-Andersen (3), Sarah Grimwood (4), Christer Halldin (1), Lars Farde (1,5), Sjoerd J. Finnema (1,6) Keywords: [11C]Lu AE92686; Monkey;... Full description

Journal Title: European journal of nuclear medicine and molecular imaging 2017-02-01, Vol.44 (2), p.308
Main Author: Yang, Kai-Chun
Other Authors: Stepanov, Vladimir , Amini, Nahid , Martinsson, Stefan , Takano, Akihiro , Nielsen, Jacob , Bundgaard, Christoffer , Bang-Andersen, Benny , Grimwood, Sarah , Halldin, Christer , Farde, Lars , Finnema, Sjoerd J
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Language: English
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Publisher: Springer
ID: ISSN: 1619-7070
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title: Characterization of [[.sup.11]C]Lu AE92686 as a PET radioligand for phosphodiesterase 10A in the nonhuman primate brain
format: Article
creator:
  • Yang, Kai-Chun
  • Stepanov, Vladimir
  • Amini, Nahid
  • Martinsson, Stefan
  • Takano, Akihiro
  • Nielsen, Jacob
  • Bundgaard, Christoffer
  • Bang-Andersen, Benny
  • Grimwood, Sarah
  • Halldin, Christer
  • Farde, Lars
  • Finnema, Sjoerd J
subjects:
  • Analysis
  • Primates
ispartof: European journal of nuclear medicine and molecular imaging, 2017-02-01, Vol.44 (2), p.308
description: Byline: Kai-Chun Yang (1), Vladimir Stepanov (1), Nahid Amini (1), Stefan Martinsson (1), Akihiro Takano (1), Jacob Nielsen (2), Christoffer Bundgaard (3), Benny Bang-Andersen (3), Sarah Grimwood (4), Christer Halldin (1), Lars Farde (1,5), Sjoerd J. Finnema (1,6) Keywords: [11C]Lu AE92686; Monkey; MP-10; Phosphodiesterase 10A; PET; Substantia nigra Purpose [11C]Lu AE92686 is a positron emission tomography (PET) radioligand that has recently been validated for examining phosphodiesterase 10A (PDE10A) in the human striatum. [[.sup.11]C]Lu AE92686 has high affinity for PDE10A (IC .sub.50=0.39 nM) and may also be suitable for examination of the substantia nigra, a region with low density of PDE10A. Here, we report characterization of regional [[.sup.11]C]Lu AE92686 binding to PDE10A in the nonhuman primate (NHP) brain. Methods A total of 11 PET measurements, seven baseline and four following pretreatment with unlabeled Lu AE92686 or the structurally unrelated PDE10A inhibitor MP-10, were performed in five NHPs using a high resolution research tomograph (HRRT). [[.sup.11]C]Lu AE92686 binding was quantified using a radiometabolite-corrected arterial input function and compartmental and graphical modeling approaches. Results Regional time-activity curves were best described with the two-tissue compartment model (2TCM). However, the distribution volume (V .sub.T) values for all regions were obtained by the Logan plot analysis, as reliable cerebellar V .sub.T values could not be derived by the 2TCM. For cerebellum, a proposed reference region, V .sub.T values increased by [proportional to]30 % with increasing PET measurement duration from 63 to 123 min, while V .sub.T values in target regions remained stable. Both pretreatment drugs significantly decreased [[.sup.11]C]Lu AE92686 binding in target regions, while no significant effect on cerebellum was observed. Binding potential (BP .sub.ND) values, derived with the simplified reference tissue model (SRTM), were 13--17 in putamen and 3--5 in substantia nigra and correlated well to values from the Logan plot analysis. Conclusions The method proposed for quantification of [[.sup.11]C]Lu AE92686 binding in applied studies in NHP is based on 63 min PET data and SRTM with cerebellum as a reference region. The study supports that [[.sup.11]C]Lu AE92686 can be used for PET examinations of PDE10A binding also in substantia nigra. Author Affiliation: (1) Department of Clinical Neuroscience, Center for Psychiatric Research,
language: eng
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identifier: ISSN: 1619-7070
fulltext: no_fulltext
issn:
  • 1619-7070
  • 1619-7089
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titleCharacterization of [[.sup.11]C]Lu AE92686 as a PET radioligand for phosphodiesterase 10A in the nonhuman primate brain
creatorYang, Kai-Chun ; Stepanov, Vladimir ; Amini, Nahid ; Martinsson, Stefan ; Takano, Akihiro ; Nielsen, Jacob ; Bundgaard, Christoffer ; Bang-Andersen, Benny ; Grimwood, Sarah ; Halldin, Christer ; Farde, Lars ; Finnema, Sjoerd J
creatorcontribYang, Kai-Chun ; Stepanov, Vladimir ; Amini, Nahid ; Martinsson, Stefan ; Takano, Akihiro ; Nielsen, Jacob ; Bundgaard, Christoffer ; Bang-Andersen, Benny ; Grimwood, Sarah ; Halldin, Christer ; Farde, Lars ; Finnema, Sjoerd J
descriptionByline: Kai-Chun Yang (1), Vladimir Stepanov (1), Nahid Amini (1), Stefan Martinsson (1), Akihiro Takano (1), Jacob Nielsen (2), Christoffer Bundgaard (3), Benny Bang-Andersen (3), Sarah Grimwood (4), Christer Halldin (1), Lars Farde (1,5), Sjoerd J. Finnema (1,6) Keywords: [11C]Lu AE92686; Monkey; MP-10; Phosphodiesterase 10A; PET; Substantia nigra Purpose [11C]Lu AE92686 is a positron emission tomography (PET) radioligand that has recently been validated for examining phosphodiesterase 10A (PDE10A) in the human striatum. [[.sup.11]C]Lu AE92686 has high affinity for PDE10A (IC .sub.50=0.39 nM) and may also be suitable for examination of the substantia nigra, a region with low density of PDE10A. Here, we report characterization of regional [[.sup.11]C]Lu AE92686 binding to PDE10A in the nonhuman primate (NHP) brain. Methods A total of 11 PET measurements, seven baseline and four following pretreatment with unlabeled Lu AE92686 or the structurally unrelated PDE10A inhibitor MP-10, were performed in five NHPs using a high resolution research tomograph (HRRT). [[.sup.11]C]Lu AE92686 binding was quantified using a radiometabolite-corrected arterial input function and compartmental and graphical modeling approaches. Results Regional time-activity curves were best described with the two-tissue compartment model (2TCM). However, the distribution volume (V .sub.T) values for all regions were obtained by the Logan plot analysis, as reliable cerebellar V .sub.T values could not be derived by the 2TCM. For cerebellum, a proposed reference region, V .sub.T values increased by [proportional to]30 % with increasing PET measurement duration from 63 to 123 min, while V .sub.T values in target regions remained stable. Both pretreatment drugs significantly decreased [[.sup.11]C]Lu AE92686 binding in target regions, while no significant effect on cerebellum was observed. Binding potential (BP .sub.ND) values, derived with the simplified reference tissue model (SRTM), were 13--17 in putamen and 3--5 in substantia nigra and correlated well to values from the Logan plot analysis. Conclusions The method proposed for quantification of [[.sup.11]C]Lu AE92686 binding in applied studies in NHP is based on 63 min PET data and SRTM with cerebellum as a reference region. The study supports that [[.sup.11]C]Lu AE92686 can be used for PET examinations of PDE10A binding also in substantia nigra. Author Affiliation: (1) Department of Clinical Neuroscience, Center for Psychiatric Research, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden (2) Synaptic Transmission, H. Lundbeck A/S, Valby, Denmark (3) Discovery Chemistry and DMPK, H. Lundbeck A/S, Valby, Denmark (4) Neuroscience and Pain Research Unit, Pfizer Inc., Cambridge, MA, USA (5) Personalized Health Care and Biomarkers, AstraZeneca PET Science Center at Karolinska Institutet, Stockholm, Sweden (6) Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT, USA Article History: Registration Date: 04/10/2016 Received Date: 27/06/2016 Accepted Date: 03/10/2016 Online Date: 05/11/2016 Article note: Electronic supplementary material The online version of this article (doi: 10.1007/s00259-016-3544-9) contains supplementary material, which is available to authorized users.
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descriptionByline: Kai-Chun Yang (1), Vladimir Stepanov (1), Nahid Amini (1), Stefan Martinsson (1), Akihiro Takano (1), Jacob Nielsen (2), Christoffer Bundgaard (3), Benny Bang-Andersen (3), Sarah Grimwood (4), Christer Halldin (1), Lars Farde (1,5), Sjoerd J. Finnema (1,6) Keywords: [11C]Lu AE92686; Monkey; MP-10; Phosphodiesterase 10A; PET; Substantia nigra Purpose [11C]Lu AE92686 is a positron emission tomography (PET) radioligand that has recently been validated for examining phosphodiesterase 10A (PDE10A) in the human striatum. [[.sup.11]C]Lu AE92686 has high affinity for PDE10A (IC .sub.50=0.39 nM) and may also be suitable for examination of the substantia nigra, a region with low density of PDE10A. Here, we report characterization of regional [[.sup.11]C]Lu AE92686 binding to PDE10A in the nonhuman primate (NHP) brain. Methods A total of 11 PET measurements, seven baseline and four following pretreatment with unlabeled Lu AE92686 or the structurally unrelated PDE10A inhibitor MP-10, were performed in five NHPs using a high resolution research tomograph (HRRT). [[.sup.11]C]Lu AE92686 binding was quantified using a radiometabolite-corrected arterial input function and compartmental and graphical modeling approaches. Results Regional time-activity curves were best described with the two-tissue compartment model (2TCM). However, the distribution volume (V .sub.T) values for all regions were obtained by the Logan plot analysis, as reliable cerebellar V .sub.T values could not be derived by the 2TCM. For cerebellum, a proposed reference region, V .sub.T values increased by [proportional to]30 % with increasing PET measurement duration from 63 to 123 min, while V .sub.T values in target regions remained stable. Both pretreatment drugs significantly decreased [[.sup.11]C]Lu AE92686 binding in target regions, while no significant effect on cerebellum was observed. Binding potential (BP .sub.ND) values, derived with the simplified reference tissue model (SRTM), were 13--17 in putamen and 3--5 in substantia nigra and correlated well to values from the Logan plot analysis. Conclusions The method proposed for quantification of [[.sup.11]C]Lu AE92686 binding in applied studies in NHP is based on 63 min PET data and SRTM with cerebellum as a reference region. The study supports that [[.sup.11]C]Lu AE92686 can be used for PET examinations of PDE10A binding also in substantia nigra. Author Affiliation: (1) Department of Clinical Neuroscience, Center for Psychiatric Research, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden (2) Synaptic Transmission, H. Lundbeck A/S, Valby, Denmark (3) Discovery Chemistry and DMPK, H. Lundbeck A/S, Valby, Denmark (4) Neuroscience and Pain Research Unit, Pfizer Inc., Cambridge, MA, USA (5) Personalized Health Care and Biomarkers, AstraZeneca PET Science Center at Karolinska Institutet, Stockholm, Sweden (6) Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT, USA Article History: Registration Date: 04/10/2016 Received Date: 27/06/2016 Accepted Date: 03/10/2016 Online Date: 05/11/2016 Article note: Electronic supplementary material The online version of this article (doi: 10.1007/s00259-016-3544-9) contains supplementary material, which is available to authorized users.
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titleCharacterization of [[.sup.11]C]Lu AE92686 as a PET radioligand for phosphodiesterase 10A in the nonhuman primate brain
authorYang, Kai-Chun ; Stepanov, Vladimir ; Amini, Nahid ; Martinsson, Stefan ; Takano, Akihiro ; Nielsen, Jacob ; Bundgaard, Christoffer ; Bang-Andersen, Benny ; Grimwood, Sarah ; Halldin, Christer ; Farde, Lars ; Finnema, Sjoerd J
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abstractByline: Kai-Chun Yang (1), Vladimir Stepanov (1), Nahid Amini (1), Stefan Martinsson (1), Akihiro Takano (1), Jacob Nielsen (2), Christoffer Bundgaard (3), Benny Bang-Andersen (3), Sarah Grimwood (4), Christer Halldin (1), Lars Farde (1,5), Sjoerd J. Finnema (1,6) Keywords: [11C]Lu AE92686; Monkey; MP-10; Phosphodiesterase 10A; PET; Substantia nigra Purpose [11C]Lu AE92686 is a positron emission tomography (PET) radioligand that has recently been validated for examining phosphodiesterase 10A (PDE10A) in the human striatum. [[.sup.11]C]Lu AE92686 has high affinity for PDE10A (IC .sub.50=0.39 nM) and may also be suitable for examination of the substantia nigra, a region with low density of PDE10A. Here, we report characterization of regional [[.sup.11]C]Lu AE92686 binding to PDE10A in the nonhuman primate (NHP) brain. Methods A total of 11 PET measurements, seven baseline and four following pretreatment with unlabeled Lu AE92686 or the structurally unrelated PDE10A inhibitor MP-10, were performed in five NHPs using a high resolution research tomograph (HRRT). [[.sup.11]C]Lu AE92686 binding was quantified using a radiometabolite-corrected arterial input function and compartmental and graphical modeling approaches. Results Regional time-activity curves were best described with the two-tissue compartment model (2TCM). However, the distribution volume (V .sub.T) values for all regions were obtained by the Logan plot analysis, as reliable cerebellar V .sub.T values could not be derived by the 2TCM. For cerebellum, a proposed reference region, V .sub.T values increased by [proportional to]30 % with increasing PET measurement duration from 63 to 123 min, while V .sub.T values in target regions remained stable. Both pretreatment drugs significantly decreased [[.sup.11]C]Lu AE92686 binding in target regions, while no significant effect on cerebellum was observed. Binding potential (BP .sub.ND) values, derived with the simplified reference tissue model (SRTM), were 13--17 in putamen and 3--5 in substantia nigra and correlated well to values from the Logan plot analysis. Conclusions The method proposed for quantification of [[.sup.11]C]Lu AE92686 binding in applied studies in NHP is based on 63 min PET data and SRTM with cerebellum as a reference region. The study supports that [[.sup.11]C]Lu AE92686 can be used for PET examinations of PDE10A binding also in substantia nigra. Author Affiliation: (1) Department of Clinical Neuroscience, Center for Psychiatric Research, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden (2) Synaptic Transmission, H. Lundbeck A/S, Valby, Denmark (3) Discovery Chemistry and DMPK, H. Lundbeck A/S, Valby, Denmark (4) Neuroscience and Pain Research Unit, Pfizer Inc., Cambridge, MA, USA (5) Personalized Health Care and Biomarkers, AstraZeneca PET Science Center at Karolinska Institutet, Stockholm, Sweden (6) Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT, USA Article History: Registration Date: 04/10/2016 Received Date: 27/06/2016 Accepted Date: 03/10/2016 Online Date: 05/11/2016 Article note: Electronic supplementary material The online version of this article (doi: 10.1007/s00259-016-3544-9) contains supplementary material, which is available to authorized users.
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doi10.1007/s00259-016-3544-9