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Galvez EJ, Sharma B, Williams FK, You CJ, Khajavi B, Castrillon J, Shi L, Mamani S, Sordillo LA, Zhang L, Alfano RR. Decoherence of photon entanglement by transmission through brain tissue with Alzheimer's disease. Biomed Opt Express 2022; 13:6621-6630. [PMID: 36589552 PMCID: PMC9774879 DOI: 10.1364/boe.474469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 11/12/2022] [Accepted: 11/13/2022] [Indexed: 06/17/2023]
Abstract
The generation, manipulation and quantification of non-classical light, such as quantum-entangled photon pairs, differs significantly from methods with classical light. Thus, quantum measures could be harnessed to give new information about the interaction of light with matter. In this study we investigate if quantum entanglement can be used to diagnose disease. In particular, we test whether brain tissue from subjects suffering from Alzheimer's disease can be distinguished from healthy tissue. We find that this is indeed the case. Polarization-entangled photons traveling through brain tissue lose their entanglement via a decohering scattering interaction that gradually renders the light in a maximally mixed state. We found that in thin tissue samples (between 120 and 600 micrometers) photons decohere to a distinguishable lesser degree in samples with Alzheimer's disease than in healthy-control ones. Thus, it seems feasible that quantum measures of entangled photons could be used as a means to identify brain samples with the neurodegenerative disease.
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Affiliation(s)
- E. J. Galvez
- Department of Physics and Astronomy, Colgate University, 13 Oak Drive, Hamilton, New York 13346, USA
| | - B. Sharma
- Department of Physics and Astronomy, Colgate University, 13 Oak Drive, Hamilton, New York 13346, USA
| | - F. K. Williams
- Department of Physics and Astronomy, Colgate University, 13 Oak Drive, Hamilton, New York 13346, USA
| | - C.-J. You
- Department of Physics and Astronomy, Colgate University, 13 Oak Drive, Hamilton, New York 13346, USA
| | - B. Khajavi
- Department of Physics and Astronomy, Colgate University, 13 Oak Drive, Hamilton, New York 13346, USA
| | - J. Castrillon
- Department of Physics and Astronomy, Colgate University, 13 Oak Drive, Hamilton, New York 13346, USA
| | - L. Shi
- Department of Bioengineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA
| | - S. Mamani
- Institute for Ultrafast Spectroscopy and Lasers–Physics Department, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA
| | - L. A. Sordillo
- Institute for Ultrafast Spectroscopy and Lasers–Physics Department, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA
| | - L. Zhang
- Institute for Ultrafast Spectroscopy and Lasers–Physics Department, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA
| | - R. R. Alfano
- Institute for Ultrafast Spectroscopy and Lasers–Physics Department, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA
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Kumar JSD, Molotkov A, Kim J, Carberry P, Idumonyi S, Castrillon J, Duff K, Shneider NA, Mintz A. Preclinical evaluation of a microtubule PET ligand [ 11C]MPC-6827 in tau and amyotrophic lateral sclerosis animal models. Pharmacol Rep 2022; 74:539-544. [PMID: 35286710 DOI: 10.1007/s43440-022-00359-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 02/03/2022] [Accepted: 02/18/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Microtubules are abundant in brain and their malfunctioning occurs in the early-to-advanced stages of neurodegenerative disorders. At present, there is no in vivo test available for a definitive diagnosis of most of the neurodegenerative disorders. Herein, we present the microPET imaging of microtubules using our recently reported Positron Emission Tomography (PET) tracer, [11C]MPC-6827, in transgenic mice models of tau pathology (rTg4510) and amyotrophic lateral sclerosis pathology (SOD1*G93A) and compared to corresponding age-matched controls. METHODS Automated synthesis of [11C]MPC-6827 was achieved in a GE-FX2MeI/FX2M radiochemistry module. In vivo PET imaging studies of [11C]MPC-6827 (3.7 ± 0.8 MBq) were performed in rTg4510 and SOD1*G93A mice groups and their corresponding littermates (n = 5 per group). Dynamic PET images were acquired using a microPET Inveon system (Siemens, Germany) at 55 min for rTg4510 and 30 min for SOD1*G93A and corresponding controls. PET images were reconstructed using the 3D-OSEM algorithm and analyzed using VivoQuant version 4 (Invicro, MA). Tracer uptake in ROIs that included whole brain was measured as %ID/g over time to generate standardized uptake values (SUV) and time-activity curves (TACs). RESULTS [11C]MPC-6827 exhibit a trend of lower tracer binding in mouse models of Alzheimer's disease (tau pathology, line rTg4510) and Amyotrophic Lateral Sclerosis (line SOD1*G93A) compared to wild-type littermates. CONCLUSIONS Our finding indicates a trend of loss of microtubule binding of [11C]MPC-6827 in the whole brain of AD and ALS transgenic mice models compared to control mice. The pilot studies described herein show that [11C]MPC-6827 could be used as a PET ligand for preclinical and human brain imaging of Alzheimer's disease, ALS, and other neurodegenerative diseases. Preclinical Evaluation of a Microtubule PET Ligand [11C]MPC-6827 in Tau and Amyotrophic Lateral Sclerosis Animal Models. J. S. Dileep Kumar, Andrei Molotkov, Jongho Kim, Patrick Carberry, Sidney Idumonyi, John Castrillon, Karen Duff, Neil A. Shneider, Akiva Mintz.
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Affiliation(s)
- J S Dileep Kumar
- Division of Molecular Imaging and Neuropathology, New York State Psychiatric Institute, New York, USA. .,Feinstein Institutes for Medical Research, North Shore University Hospital, Manhasset, New York, USA.
| | - Andrei Molotkov
- Department of Radiology, Columbia University Medical Center, New York, USA
| | - Jongho Kim
- Department of Radiology, Columbia University Medical Center, New York, USA
| | - Patrick Carberry
- Department of Radiology, Columbia University Medical Center, New York, USA
| | - Sidney Idumonyi
- Department of Radiology, Columbia University Medical Center, New York, USA
| | - John Castrillon
- Department of Radiology, Columbia University Medical Center, New York, USA
| | - Karen Duff
- Department of Pathology and Cell Biology and Taub Institute, Columbia University Medical Center, New York, USA.,UK Dementia Research Institute, University College London, London, UK
| | - Neil A Shneider
- Department of Neurology and Eleanor and Lou Gehrig ALS Center, Columbia University Medical Center, New York, USA
| | - Akiva Mintz
- Division of Molecular Imaging and Neuropathology, New York State Psychiatric Institute, New York, USA.,Department of Radiology, Columbia University Medical Center, New York, USA
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Gopal P, Yard B, Petty A, Castrillon J, Patel J, Abazeed M. Genome-Scale and Systematic Variant Profiling Delineates the Radiogenomic Landscape of Cancer. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abazeed M, Bera T, Castrillon J, Petty A, Yard B, Gopal P. OC-0400 The mutational landscape of cancer’s sensitivity to ionizing radiation. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06887-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Molotkov A, Carberry P, Dolan MA, Joseph S, Idumonyi S, Oya S, Castrillon J, Konofagou EE, Doubrovin M, Lesser GJ, Zanderigo F, Mintz A. Real-Time Positron Emission Tomography Evaluation of Topotecan Brain Kinetics after Ultrasound-Mediated Blood-Brain Barrier Permeability. Pharmaceutics 2021; 13:405. [PMID: 33803856 PMCID: PMC8003157 DOI: 10.3390/pharmaceutics13030405] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/09/2021] [Accepted: 03/12/2021] [Indexed: 01/13/2023] Open
Abstract
Glioblastoma (GBM) is the most common primary adult brain malignancy with an extremely poor prognosis and a median survival of fewer than two years. A key reason for this high mortality is that the blood-brain barrier (BBB) significantly restricts systemically delivered therapeutics to brain tumors. High-intensity focused ultrasound (HIFU) with microbubbles is a methodology being used in clinical trials to noninvasively permeabilize the BBB for systemic therapeutic delivery to GBM. Topotecan is a topoisomerase inhibitor used as a chemotherapeutic agent to treat ovarian and small cell lung cancer. Studies have suggested that topotecan can cross the BBB and can be used to treat brain metastases. However, pharmacokinetic data demonstrated that topotecan peak concentration in the brain extracellular fluid after systemic injection was ten times lower than in the blood, suggesting less than optimal BBB penetration by topotecan. We hypothesize that HIFU with microbubbles treatment can open the BBB and significantly increase topotecan concentration in the brain. We radiolabeled topotecan with 11C and acquired static and dynamic positron emission tomography (PET) scans to quantify [11C] topotecan uptake in the brains of normal mice and mice after HIFU treatment. We found that HIFU treatments significantly increased [11C] topotecan brain uptake. Moreover, kinetic analysis of the [11C] topotecan dynamic PET data demonstrated a substantial increase in [11C] topotecan volume of distribution in the brain. Furthermore, we found a decrease in [11C] topotecan brain clearance, confirming the potential of HIFU to aid in the delivery of topotecan through the BBB. This opens the potential clinical application of [11C] topotecan as a tool to predict topotecan loco-regional brain concentration in patients with GBMs undergoing experimental HIFU treatments.
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Affiliation(s)
- Andrei Molotkov
- Department of Radiology, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032, USA; (A.M.); (P.C.); (M.A.D.); (S.J.); (S.I.); (S.O.); (J.C.); (M.D.)
| | - Patrick Carberry
- Department of Radiology, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032, USA; (A.M.); (P.C.); (M.A.D.); (S.J.); (S.I.); (S.O.); (J.C.); (M.D.)
| | - Martin A. Dolan
- Department of Radiology, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032, USA; (A.M.); (P.C.); (M.A.D.); (S.J.); (S.I.); (S.O.); (J.C.); (M.D.)
| | - Simon Joseph
- Department of Radiology, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032, USA; (A.M.); (P.C.); (M.A.D.); (S.J.); (S.I.); (S.O.); (J.C.); (M.D.)
| | - Sidney Idumonyi
- Department of Radiology, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032, USA; (A.M.); (P.C.); (M.A.D.); (S.J.); (S.I.); (S.O.); (J.C.); (M.D.)
| | - Shunichi Oya
- Department of Radiology, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032, USA; (A.M.); (P.C.); (M.A.D.); (S.J.); (S.I.); (S.O.); (J.C.); (M.D.)
| | - John Castrillon
- Department of Radiology, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032, USA; (A.M.); (P.C.); (M.A.D.); (S.J.); (S.I.); (S.O.); (J.C.); (M.D.)
| | - Elisa E. Konofagou
- Department of Biomedical Engineering, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032, USA;
| | - Mikhail Doubrovin
- Department of Radiology, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032, USA; (A.M.); (P.C.); (M.A.D.); (S.J.); (S.I.); (S.O.); (J.C.); (M.D.)
| | - Glenn J. Lesser
- Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest Baptist Comprehensive Cancer Center, Winston-Salem, NC 27157, USA;
| | - Francesca Zanderigo
- Department of Psychiatry, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032, USA;
- Molecular Imaging and Neuropathology Area, New York State Psychiatric Institute, New York, NY 10032, USA
| | - Akiva Mintz
- Department of Radiology, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032, USA; (A.M.); (P.C.); (M.A.D.); (S.J.); (S.I.); (S.O.); (J.C.); (M.D.)
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Yard B, Castrillon J, Petty A, Gopal P, Abazeed M. Mapping The Radiogenomic Atlas Of Cancer By Massively Parallel Reverse Genetic Profiling. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Yard B, Petty A, Castrillon J, Gopal P, Abazeed M. SP-0018: Genome-scale and systematic variant profiling delineates the radiogenomic landscape of cancer. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00044-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Molotkov A, Bhatt N, Doubrovin M, Castrillon J, Massa C, Gerber A, D'Armiento J, Goldklang M, Mintz A. Multimodality molecular imaging of the alveolar-capillary barrier in lung disease using albumin based optical and PET tracers. Mol Biomed 2020; 1:17. [PMID: 34766000 PMCID: PMC7749789 DOI: 10.1186/s43556-020-00020-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 11/20/2020] [Indexed: 01/08/2023] Open
Abstract
Inflammatory changes caused by viruses, bacteria, exposure to toxins, commonly used drugs and even surgical intervention have the potential of causing abnormal epithelial permeability, which is manifest as infiltrative processes on computed tomography (CT), including the widespread infiltrates seen in COVID-19 pneumonia and acute respiratory distress syndrome (ARDS). We utilized a previously published mouse model of ARDS, intranasal delivery of LPS, to induce the alveolar-capillary barrier permeability seen in lung disease. We intravenously injected mice with Cy7 or 68-Gallium (68Ga) labeled mouse albumin and imaged using optical imaging (OI)/CT and PET. We observed significantly increased lung levels of Cy7-albumin on 3D OI/CT, which matched the abnormal appearance on microCT. This uptake correlated with fluorescence seen on sectioned lungs. To examine the translational potential of these findings, we radiolabeled albumin with 68Ga. We found that in mice with LPS-induced lung injury, 68Ga-albumin PET correlated with our optical imaging findings and demonstrated abnormal activity in the lung fields, indicative of abnormal epithelial permeability. These findings indicate 68Ga-albumin can be utilized as a sensitive translational radiotracer for quantifying the abnormal epithelial permeability that is seen in various lung pathologies, including COVID-19 induced pneumonia and ARDS. The ability to use Cy7-albumin 3D OI/CT imaging as a preclinical translational surrogate for 68Ga-albumin offers an accessible high throughput means to rapidly screen potential therapeutics against lung diseases that clinically manifest with endothelial permeability.
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Affiliation(s)
- Andrei Molotkov
- Department of Radiology, Columbia University Irving Medical Center, 722 W. 168th St., New York, NY 10032 USA
| | - Nikunj Bhatt
- Department of Radiology, Columbia University Irving Medical Center, 722 W. 168th St., New York, NY 10032 USA
| | - Mikhail Doubrovin
- Department of Radiology, Columbia University Irving Medical Center, 722 W. 168th St., New York, NY 10032 USA
| | - John Castrillon
- Department of Radiology, Columbia University Irving Medical Center, 722 W. 168th St., New York, NY 10032 USA
| | - Christopher Massa
- Center for LAM and Rare Lung Diseases, Department of Anesthesiology, Columbia University Medical Center, 722 W. 168th St., New York, NY 10032 USA
| | - Adam Gerber
- Center for LAM and Rare Lung Diseases, Department of Anesthesiology, Columbia University Medical Center, 722 W. 168th St., New York, NY 10032 USA
| | - Jeanine D'Armiento
- Center for LAM and Rare Lung Diseases, Department of Anesthesiology, Columbia University Medical Center, 722 W. 168th St., New York, NY 10032 USA
| | - Monica Goldklang
- Center for LAM and Rare Lung Diseases, Department of Anesthesiology, Columbia University Medical Center, 722 W. 168th St., New York, NY 10032 USA
| | - Akiva Mintz
- Department of Radiology, Columbia University Irving Medical Center, 722 W. 168th St., New York, NY 10032 USA
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Fu J, Bhatt N, Kim J, Castrillon J, Carberry P, Molotkov A, Sanchorawala V, Connors L, Lentzsch S, Mintz A. Real-Time PET Imaging with Amyloid Fibril-Reactive Antibody CAEL-101 for Personalized AL Amyloidosis Immunotherapy. Clinical Lymphoma Myeloma and Leukemia 2019. [DOI: 10.1016/j.clml.2019.09.516] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Garzón-Orjuela N, Prieto-Pinto L, Lasalvia P, Gonzalez-Bravo D, Gil Rojas Y, Castañeda-Cardona C, Castrillon J, Herrera D, Rosselli D. PCN1 EFECTIVIDAD Y SEGURIDAD DEL ESQUEMA DABRAFENIB-TRAMETINIB EN EL TRATAMIENTO DEL MELANOMA AVANZADO/METASTÁSICO IRRESECABLE CON MUTACIÓN BRAF V600: REVISIÓN SISTEMÁTICA DE LA LITERATURA Y METANÁLISIS EN RED. Value Health Reg Issues 2019. [DOI: 10.1016/j.vhri.2019.08.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Lasalvia P, Prieto-Pinto L, Moreno M, Castrillon J, Romano G, Garzón-Orjuela N, Rosselli D. PRO10 EXPERIENCIA INTERNACIONAL EN EL USO DE ANÁLISIS DE DECISIÓN MULTICRITERIO (MCDA) PARA EVALUAR MEDICAMENTOS HUÉRFANOS: SCOPING REVIEW. Value Health Reg Issues 2019. [DOI: 10.1016/j.vhri.2019.08.417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hwang DR, Hu E, Rumfelt S, Easwaramoorthy B, Castrillon J, Davis C, Allen JR, Chen H, Treanor J, Abi-Dargham A, Slifstein M. Initial characterization of a PDE10A selective positron emission tomography tracer [11C]AMG 7980 in non-human primates. Nucl Med Biol 2014; 41:343-9. [PMID: 24607437 DOI: 10.1016/j.nucmedbio.2014.01.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 12/19/2013] [Accepted: 01/07/2014] [Indexed: 10/25/2022]
Abstract
INTRODUCTION Phosphodiesterase 10A (PDE10A) is an intracellular enzyme responsible for the breakdown of cyclic nucleotides which are important secondary messengers in the central nervous system. Inhibition of PDE10A has been identified as a potential therapeutic target for treatment of various neuropsychiatric disorders. To assist the drug development program, we have identified a selective PDE10A PET tracer, [(11)C]AMG 7980, for imaging PDE10A distribution using positron emission tomography. METHODS [(11)C]AMG 7980 was prepared in a one-pot, two-step reaction. Dynamic PET scans were performed in non-human primates following a bolus or bolus plus constant infusion tracer injection paradigm. Regions-of-interest were defined on individuals' MRIs and transferred to the co-registered PET images. Data were analyzed using Logan graphical analysis with metabolite-corrected input function, the simplified reference tissue model (SRTM) method and occupancy plots. A benchmark PDE10A inhibitor was used to demonstrate PDE10A-specific binding. RESULTS [(11)C]AMG 7980 was prepared with a mean specific activity of 99 ± 74 GBq/μmol (n=10) and a synthesis time of 45 min. Specific binding of the tracer was localized to the striatum and globus pallidus (GP) and low in other brain regions. Thalamus was used as the reference tissue to derive binding potentials (BPND). The BPND for caudate, putamen, and GP were 0.23, 0.65, 0.51, respectively by the graphical method, and 0.42, 0.76, and 0.75 from the SRTM method. A dose dependent decrease of BPND was observed with the pre-treatment of a PDE10A inhibitor. A bolus plus infusion injection paradigm yielded similar results. CONCLUSION [(11)C]AMG 7980 has been successfully used for imaging PDE10A in non-human primate brain. Despite the fast brain kinetics it can be used to measure target occupancy of PDE10A inhibitors in non-human primates and potentially applicable to humans.
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Affiliation(s)
- Dah-Ren Hwang
- Department of Medical Sciences, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, California 91320-1799, United States.
| | - Essa Hu
- Department of Small Molecule Chemistry, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, California 91320-1799, United States
| | - Shannon Rumfelt
- Department of Small Molecule Chemistry, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, California 91320-1799, United States
| | - Balu Easwaramoorthy
- Department of Psychiatry, Columbia University, New York, NY, USA; New York State Psychiatric Institute, NY, USA
| | | | - Carl Davis
- Department of Pharmacokinetics and Drug Metabolism, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, California 91320-1799, United States
| | - Jennifer R Allen
- Department of Small Molecule Chemistry, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, California 91320-1799, United States
| | - Hang Chen
- Department of Neuroscience, Amgen Inc., South San Francisco, CA
| | - James Treanor
- Department of Neuroscience, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, California 91320-1799, United States
| | - Anissa Abi-Dargham
- Department of Psychiatry, Columbia University, New York, NY, USA; Department of Radiology, Columbia University, New York, NY, USA; New York State Psychiatric Institute, NY, USA
| | - Mark Slifstein
- Department of Psychiatry, Columbia University, New York, NY, USA; New York State Psychiatric Institute, NY, USA
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Castrillon J, Gomez-Campos E, Aguilar A, Berdié L, Borrell A. PCB and DDT levels do not appear to have enhanced the mortality of striped dolphins (Stenella coeruleoalba) in the 2007 Mediterranean epizootic. Chemosphere 2010; 81:459-463. [PMID: 20800263 DOI: 10.1016/j.chemosphere.2010.08.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Revised: 08/04/2010] [Accepted: 08/04/2010] [Indexed: 05/29/2023]
Abstract
In 2007, 17 years after the first reported Mediterranean epizootic of striped dolphins (Stenella coeruleoalba), a new strain of the morbillivirus caused the deaths of dozens of striped dolphins that appeared dead on Western Mediterranean beaches. DDT and PCB levels were determined in these dolphins, and in individuals from sporadic strandings in the surrounding years. Comparison between the two epidemic events showed that organochlorine (OC) levels in the dolphins from 1990 epizootic were more than 10-fold higher for tPCB and 6-fold higher for tDDT than levels in dolphins from the 2007 outbreak. In contrast to what occurred in 1990, OCs from individuals affected by the second outburst fit well with curves of OC trends in the Mediterranean. Because the virulence of the 2007 epizootic was much lower, and the deceased dolphins affected by it did not present OC concentrations that were more elevated than in presumably healthy individuals, this second outburst is not believed to have been enhanced by OC pollutants.
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Affiliation(s)
- J Castrillon
- Department of Animal Biology and Institute of Biodiversity (IRBIO), University of Barcelona, Barcelona, Spain
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Girgis RR, Miyake N, Xu X, Easwaramoorthy B, Castrillon J, Gunn R, Rabiner E, Abi-Dargham A, Slifstein M. In vivo binding of antipsychotics to D3 and D2 receptors: A PET study in baboons with [11C]-(+)-PHNO. Neuroimage 2010. [DOI: 10.1016/j.neuroimage.2010.04.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Miyake N, Slifstein M, Skinbjerg M, Xu X, Ayoub R, Easwaramoorthy B, Bae SA, Hackett E, Castrillon J, Kegeles LS, Abi-Dargham A. Reproducibility and sensitivity to pharmacological challenge of [11C]-ABP688 in non-human primate brain. Neuroimage 2010. [DOI: 10.1016/j.neuroimage.2010.04.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Slifstein M, Kegeles LS, Xu X, Thompson JL, Urban N, Castrillon J, Hackett E, Bae SA, Laruelle M, Abi-Dargham A. Striatal and extrastriatal dopamine release measured with PET and [(18)F] fallypride. Synapse 2010; 64:350-62. [PMID: 20029833 DOI: 10.1002/syn.20734] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The amphetamine challenge, in which positron emission tomography (PET) or single photon emission computed tomography radioligand binding following administration of amphetamine is compared to baseline values, has been successfully used in a number of brain imaging studies as an indicator of dopaminergic function, particularly in the striatum. [(18)F] fallypride is the first PET radioligand that allows measurement of the effects of amphetamine on D2/D3 ligand binding in striatum and extra-striatal brain regions in a single scanning session following amphetamine. We scanned 15 healthy volunteer subjects with [(18)F] fallypride at baseline and following amphetamine (0.3 mg/kg) using arterial plasma input-based modeling as well as reference region methods. We found that amphetamine effect was robustly detected in ventral striatum, globus pallidus, and posterior putamen, and with slightly higher variability in other striatal subregions. However, the observed effect sizes in striatum were less than those observed in previous studies in our laboratory using [(11)C] raclopride. Robust effect was also detected in limbic extra-striatal regions (hippocampus, amygdala) and substantia nigra, but the signal-to-noise ratio was too low to allow accurate measurement in cortical regions. We conclude that [(18)F] fallypride is a suitable ligand for measuring amphetamine effect in striatum and limbic regions, but it is not suitable for measuring the effect in cortical regions and may not provide the most powerful way to measure the effect in striatum.
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Slifstein M, Kegeles L, Xu X, Hackett E, Castrillon J, Bae S, Laruelle M, Abi-Dargham A. Amphetamine challenge with [18F]fallypride: Striatal and extrastriatal measurements in healthy human volunteers. Neuroimage 2008. [DOI: 10.1016/j.neuroimage.2008.04.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Narendran R, Hwang DR, Slifstein M, Hwang Y, Hackett E, Sudeall K, Castrillon J, Laruelle M. Amphetamine-induced dopamine release: Duration of action as assessed by the dopamine-2-receptor (D2) agonist [11C]NPA in baboons. Neuroimage 2006. [DOI: 10.1016/j.neuroimage.2006.04.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Suehiro M, Simpson NR, Underwood MD, Castrillon J, Nakanishi K, van Heertum R. In vivo biodistribution of ginkgolide B, a constituent of Ginkgo biloba, visualized by MicroPET. Planta Med 2005; 71:622-7. [PMID: 16041647 DOI: 10.1055/s-2005-871267] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The in vivo dynamic behavior of ginkgolide B (GB), a terpene lactone constituent of the Ginkgo biloba extracts, in the living animal was visualized by positron emission tomographic (PET) imaging using a GB analogue labeled with the positron emitter (18)F. The in vivo imaging studies, combined with ex vivo dissection experiments, reveal that GB exists in 2 forms in the body: the original GB with its lactone rings closed and a second form with one of the rings open. The original GB in plasma is taken up rapidly by various organs including the liver, the intestine and possibly the stomach. Consequently, in plasma, the proportion of the ionized form of GB increases dramatically with time. Thereafter the ratio between the 2 forms appears to shift slowly towards equilibrium. The results suggest that more attention needs to be focused on in vivo dynamics between the 2 forms of GB.
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Affiliation(s)
- Makiko Suehiro
- Department of Chemistry, Columbia University, New York, NY, USA.
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