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El-Kawy OA, Abdelaziz G, Abdel-Razek AS. Radiolabeling, characterization and preclinical evaluation of plazomicin: a potential tracer for bacterial infection. Chem Biol Drug Des 2021; 99:688-702. [PMID: 34923759 DOI: 10.1111/cbdd.14007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 11/06/2021] [Accepted: 11/28/2021] [Indexed: 11/28/2022]
Abstract
In this study, 99m Tc-plazomicin, a new radio-antibiotic complex, was prepared specifically for bacterial infection localization and monitoring. Factors affecting the labeling reaction were studied and optimized to obtain a high yield (98.8 ± 0.2%). In-silico, radiochemical and physicochemical characterization and biodistribution were performed to assess the complex aptness as a radiopharmaceutical. The complex was biologically evaluated in-vitro using bacteria and in-vivo using different inflammation models (sterile, bacterial, and fungal). Uptake in the bacterial model was highest (7.8 ± 0.3%). Results indicated that the technetium label did not alter the antibiotic biological behavior and backed the usefulness of 99m Tc-plazomicin as a potential tracer.
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Affiliation(s)
- O A El-Kawy
- Egyptian Atomic Energy Authority, Cairo, 13759, Egypt
| | - G Abdelaziz
- Egyptian Atomic Energy Authority, Cairo, 13759, Egypt
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2
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Kuzma BA, Pence IJ, Greenfield DA, Ho A, Evans CL. Visualizing and quantifying antimicrobial drug distribution in tissue. Adv Drug Deliv Rev 2021; 177:113942. [PMID: 34437983 DOI: 10.1016/j.addr.2021.113942] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/11/2021] [Accepted: 08/18/2021] [Indexed: 12/15/2022]
Abstract
The biodistribution and pharmacokinetics of drugs are vital to the mechanistic understanding of their efficacy. Measuring antimicrobial drug efficacy has been challenging as plasma drug concentration is used as a surrogate for tissue drug concentration, yet typically does not reflect that at the intended site(s) of action. Utilizing an image-guided approach, it is feasible to accurately quantify the biodistribution and pharmacokinetics within the desired site(s) of action. We outline imaging modalities used in visualizing drug distribution with examples ranging from in vitro cellular drug uptake to clinical treatment of microbial infections. The imaging modalities of interest are: radio-labeling, magnetic resonance, mass spectrometry imaging, computed tomography, fluorescence, and Raman spectroscopy. We outline the progress, limitations, and future outlook for each methodology. Further advances in these optical approaches would benefit patients and researchers alike, as non-invasive imaging could yield more profound insights with a lower clinical burden than invasive measurement approaches used today.
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Affiliation(s)
- Benjamin A Kuzma
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston 02114, USA
| | - Isaac J Pence
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston 02114, USA
| | - Daniel A Greenfield
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston 02114, USA
| | - Alexander Ho
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston 02114, USA
| | - Conor L Evans
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston 02114, USA.
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3
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Peukert C, Langer LNB, Wegener SM, Tutov A, Bankstahl JP, Karge B, Bengel FM, Ross TL, Brönstrup M. Optimization of Artificial Siderophores as 68Ga-Complexed PET Tracers for In Vivo Imaging of Bacterial Infections. J Med Chem 2021; 64:12359-12378. [PMID: 34370949 DOI: 10.1021/acs.jmedchem.1c01054] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The diagnosis of bacterial infections at deep body sites benefits from noninvasive imaging of molecular probes that can be traced by positron emission tomography (PET). We specifically labeled bacteria by targeting their iron transport system with artificial siderophores. The cyclen-based probes contain different binding sites for iron and the PET nuclide gallium-68. A panel of 11 siderophores with different iron coordination numbers and geometries was synthesized in up to 8 steps, and candidates with the best siderophore potential were selected by a growth recovery assay. The probes [68Ga]7 and [68Ga]15 were found to be suitable for PET imaging based on their radiochemical yield, radiochemical purity, and complex stability in vitro and in vivo. Both showed significant uptake in mice infected with Escherichia coli and were able to discern infection from lipopolysaccharide-triggered, sterile inflammation. The study qualifies cyclen-based artificial siderophores as readily accessible scaffolds for the in vivo imaging of bacteria.
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Affiliation(s)
- Carsten Peukert
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Laura N B Langer
- Department of Nuclear Medicine, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Sophie M Wegener
- Department of Nuclear Medicine, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Anna Tutov
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Jens P Bankstahl
- Department of Nuclear Medicine, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Bianka Karge
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Frank M Bengel
- Department of Nuclear Medicine, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Tobias L Ross
- Department of Nuclear Medicine, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Mark Brönstrup
- Department of Chemical Biology, Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
- German Center for Infection Research (DZIF), Site Hannover-Braunschweig, 38124 Braunschweig, Germany
- Center for Biomolecular Drug Research (BMWZ), Schneiderberg 38, 30167 Hannover, Germany
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4
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Naqvi SAR. 99m Tc-labeled antibiotics for infection diagnosis: Mechanism, action, and progress. Chem Biol Drug Des 2021; 99:56-74. [PMID: 34265177 DOI: 10.1111/cbdd.13923] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 05/08/2021] [Accepted: 06/06/2021] [Indexed: 01/01/2023]
Abstract
Discovery of penicillin marked a turning point in the history of infection therapy which also led to the emergence of bacterial resistance. It is now 100 years to fight with ever-muted variants of pathogens by developing more and more antibiotics. Since 1987 to todate, no successful class of antibiotic was introduced; this three decade period is known as "the discovery void" period. While, the clinically approved antibiotics are gradually dying in front of bacterial resistance due to which bacterial infections are appearing leading cause of death and disability. Nuclear medicine imaging technique is the strongest modality to diagnose and follow-up of deep-seated and complicated infections. However, the selection of radiolabeled antimicrobial agents plays critical role in gaining sensitivity and specificity of the imaging results. This review comprises of two main sections; first section explains antibiotic targets, and second section explains the imaging efficacy of 99m Tc-labeled antimicrobial agents against bacterial infection along with the emphasis on progress and update of 99m Tc-labeled antibiotics as infection imaging probes. The review, in conclusion, could be an acceleration for radiopharmaceutical chemists for designing and developing 99m Tc-labeled antimicrobial agents to improve infection imaging quality.
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Affiliation(s)
- Syed Ali Raza Naqvi
- Department of Chemistry, Government College University, Faisalabad, Pakistan
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5
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Attallah KM, Gouda AM, Ibrahim IT, Abouzeid L. Design, synthesis, 99mTc labeling, and biological evaluation of a novel pyrrolizine derivative as potential anti-inflammatory agent. RADIOCHEMISTRY 2017. [DOI: 10.1134/s10663622170600121] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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6
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Radiosynthesis and Biodistribution of 99mTc-Metronidazole as an Escherichia coli Infection Imaging Radiopharmaceutical. Appl Biochem Biotechnol 2017; 185:127-139. [DOI: 10.1007/s12010-017-2641-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 10/17/2017] [Indexed: 10/18/2022]
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7
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Magnetic 99m Tc- core-shell of polyethylene glycol/polyhydroxyethyl methacrylate based on Fe 3 O 4 nanoparticles: Radiation synthesis, characterization and biodistribution study in tumor bearing mice. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2017.04.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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8
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El-Kawy OA, García-Horsman JA. 99mTc-roxifiban: a potential molecular imaging agent for the detection and localization of acute venous thrombosis. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5183-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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9
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Kniess T, Laube M, Wüst F, Pietzsch J. Technetium-99m based small molecule radiopharmaceuticals and radiotracers targeting inflammation and infection. Dalton Trans 2017; 46:14435-14451. [DOI: 10.1039/c7dt01735a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
99mTc-labeled antibiotics, antifungal drugs, antimicrobial peptides and COX-2 inhibitors are comprehensively reviewed.
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Affiliation(s)
- Torsten Kniess
- Helmholtz-Zentrum Dresden-Rossendorf
- Institute of Radiopharmaceutical Cancer Research
- 01328 Dresden
- Germany
| | - Markus Laube
- Helmholtz-Zentrum Dresden-Rossendorf
- Institute of Radiopharmaceutical Cancer Research
- 01328 Dresden
- Germany
| | - Frank Wüst
- University of Alberta
- Department of Oncology
- 11560 University Avenue
- Edmonton
- Canada
| | - Jens Pietzsch
- Helmholtz-Zentrum Dresden-Rossendorf
- Institute of Radiopharmaceutical Cancer Research
- 01328 Dresden
- Germany
- Technische Universität Dresden
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10
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Sanad MH, Salama DH, Marzook FA. Radioiodinated famotidine as a new highly selective radiotracer for peptic ulcer disorder detection, diagnostic nuclear imaging and biodistribution. RADIOCHIM ACTA 2016. [DOI: 10.1515/ract-2016-2683] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Famotidine was labeled with iodine-125 to obtain 125I-famotidine (125I-fam) as an agent for ulcer imaging. The radiochemical yield of 125I-famotidine reached approximately 98.5 ± 0.23% at optimum conditions of pH, oxidizing agent, reaction time and the amount of substrate. 125I-fam was stable for 48 h. Different chromatographic techniques were used to determine the radiochemical yield and purity. Intravenous biodistribution studies of 125I-fam revealed high concentration in the stomach ulcer, reaching about 65.9 ± 0.28% of the total injected dose at 30 min post injection. This concentration of 125I-fam in stomach ulcer makes this agent promising for stomach ulcer imaging.
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Affiliation(s)
- M. H. Sanad
- Labeled Compounds Department, Radioisotopes Production and Radioactive Sources Division, Hot Laboratories Center, Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt
| | - Dina H. Salama
- Health Radiation Research Department (Radiodiagnosis Unit), National Center for Radiation Research and Technology, Atomic Energy Authority, Cairo, Egypt
| | - F. A. Marzook
- Labeled Compounds Department, Radioisotopes Production and Radioactive Sources Division, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
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11
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Ibrahim IT, Abdelhalim SM, Farouk N. Preclinical evaluation of 99m Tc-histidine as a possible tumor imaging agent. RADIOCHEMISTRY 2016. [DOI: 10.1134/s106636221605012x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Borai EH, Sanad MH, Fouzy ASM. Optimized chromatographic separation and biological evaluation of 99m Tc-clarithromycin for infective inflammation diagnosis. RADIOCHEMISTRY 2016. [DOI: 10.1134/s1066362216010136] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Salahinejad M, Mirshojaei SF. Quantitative structure–activity relationship analysis to elucidate the clearance mechanisms of Tc-99m labeled quinolone antibiotics. J Radioanal Nucl Chem 2016. [DOI: 10.1007/s10967-015-4333-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Radiolabeling, biological evaluation and molecular docking of delafloxacin: a novel methicillin-resistant Staphylococcus aureus infection radiotracer. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4586-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Damont A, Médran-Navarrete V, Cacheux F, Kuhnast B, Pottier G, Bernards N, Marguet F, Puech F, Boisgard R, Dollé F. Novel Pyrazolo[1,5-a]pyrimidines as Translocator Protein 18 kDa (TSPO) Ligands: Synthesis, in Vitro Biological Evaluation, [(18)F]-Labeling, and in Vivo Neuroinflammation PET Images. J Med Chem 2015; 58:7449-64. [PMID: 26280386 DOI: 10.1021/acs.jmedchem.5b00932] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A series of novel pyrazolo[1,5-a]pyrimidines, closely related to N,N-diethyl-2-(2-(4-(2-fluoroethoxy)phenyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidin-3-yl)acetamide (2, DPA-714), were synthesized and biologically in vitro evaluated for their potential to bind the translocator protein 18 kDa (TSPO), a protein today recognized as an early biomarker of neuroinflammatory processes. This series is composed of fluoroalkyl- and fluoroalkynyl- analogues, prepared from a common iodinated intermediate via Sonogashira coupling reactions. All derivatives displayed subnanomolar affinity for the TSPO (0.37 to 0.86 nM), comparable to that of 2 (0.91 nM). Two of them were radiolabeled with fluorine-18, and their biodistribution was investigated by in vitro autoradiography and positron emission tomography (PET) imaging on a rodent model of neuroinflammation. Brain uptake and local accumulation of both compounds in the AMPA-mediated lesion confirm their potential as in vivo PET-radiotracers. In particular, [(18)F]23 exhibited a significantly higher ipsi- to contralateral ratio at 60 min than the parent molecule [(18)F]2 in vivo.
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Affiliation(s)
- Annelaure Damont
- CEA, I2BM, Service Hospitalier Frédéric Joliot, Orsay, France.,Inserm/CEA/Université Paris Sud, UMR 1023-ERL 9218 CNRS, IMIV, Orsay, France
| | - Vincent Médran-Navarrete
- CEA, I2BM, Service Hospitalier Frédéric Joliot, Orsay, France.,Inserm/CEA/Université Paris Sud, UMR 1023-ERL 9218 CNRS, IMIV, Orsay, France
| | - Fanny Cacheux
- CEA, I2BM, Service Hospitalier Frédéric Joliot, Orsay, France.,Inserm/CEA/Université Paris Sud, UMR 1023-ERL 9218 CNRS, IMIV, Orsay, France
| | - Bertrand Kuhnast
- CEA, I2BM, Service Hospitalier Frédéric Joliot, Orsay, France.,Inserm/CEA/Université Paris Sud, UMR 1023-ERL 9218 CNRS, IMIV, Orsay, France
| | - Géraldine Pottier
- CEA, I2BM, Service Hospitalier Frédéric Joliot, Orsay, France.,Inserm/CEA/Université Paris Sud, UMR 1023-ERL 9218 CNRS, IMIV, Orsay, France
| | - Nicholas Bernards
- CEA, I2BM, Service Hospitalier Frédéric Joliot, Orsay, France.,Inserm/CEA/Université Paris Sud, UMR 1023-ERL 9218 CNRS, IMIV, Orsay, France
| | | | | | - Raphaël Boisgard
- CEA, I2BM, Service Hospitalier Frédéric Joliot, Orsay, France.,Inserm/CEA/Université Paris Sud, UMR 1023-ERL 9218 CNRS, IMIV, Orsay, France
| | - Frédéric Dollé
- CEA, I2BM, Service Hospitalier Frédéric Joliot, Orsay, France.,Inserm/CEA/Université Paris Sud, UMR 1023-ERL 9218 CNRS, IMIV, Orsay, France
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16
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Sanad MH, Ibrahim IT. Radiodiagnosis of peptic ulcer with technetium-99m labeled rabeprazole. RADIOCHEMISTRY 2015. [DOI: 10.1134/s1066362215040165] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Essouissi I, Darghoutha F, Saied NM, Saidi M, Kanoun A, Saidi M. Radiolabeling, quality control, and biodistribution of 99mTc-sulfadiazine as an infection imaging agent. RADIOCHEMISTRY 2015. [DOI: 10.1134/s106636221503011x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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El-Kawy OA, Farah K. Radiocomplexation and biological evaluation of nemonoxacin in mice infected with multiresistant Staphylococcus aureus and penicillin-resistant Streptococci. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4069-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Sanad MH, Borai EH. Performance characteristics of biodistribution of 99mTc-cefprozil for in vivo infection imaging. J Anal Sci Technol 2014. [DOI: 10.1186/s40543-014-0032-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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20
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Sanad MH. Novel radiochemical and biological characterization of 99mTc-histamine as a model for brain imaging. J Anal Sci Technol 2014. [DOI: 10.1186/s40543-014-0023-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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21
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Motaleb MA, Ayoub SM. Preparation, quality control, and biodistribution of 99mTc-rufloxacin complex as a model for detecting sites of infection. RADIOCHEMISTRY 2013. [DOI: 10.1134/s1066362213060088] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Bunschoten A, Welling MM, Termaat MF, Sathekge M, van Leeuwen FWB. Development and Prospects of Dedicated Tracers for the Molecular Imaging of Bacterial Infections. Bioconjug Chem 2013; 24:1971-89. [PMID: 24200346 DOI: 10.1021/bc4003037] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- A. Bunschoten
- Department
of Radiology, Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Leiden, The Netherlands
| | - M. M. Welling
- Department
of Radiology, Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Leiden, The Netherlands
| | - M. F. Termaat
- Department
of Trauma Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - M. Sathekge
- Department of Nuclear Medicine, University of Pretoria & Steve Biko Academic Hospital, Pretoria, South Africa
| | - F. W. B. van Leeuwen
- Department
of Radiology, Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Leiden, The Netherlands
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23
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Sanad MH. Labeling and biological evaluation of 99m Tc-azithromycin for infective inflammation diagnosis. RADIOCHEMISTRY 2013. [DOI: 10.1134/s1066362213050159] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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24
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Abdel-Ghaney IY, Sanad MH. Synthesis of 99m Tc-erythromycin complex as a model for infection sites imaging. RADIOCHEMISTRY 2013. [DOI: 10.1134/s1066362213040139] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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25
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Preparation and biological distribution of 99mTc-cefazolin complex, a novel agent for detecting sites of infection. J Radioanal Nucl Chem 2013. [DOI: 10.1007/s10967-013-2593-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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26
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Nayak DK, Baishya R, Halder KK, Sen T, Sarkar BR, Ganguly S, Das MK, Debnath MC. Evaluation of 99mTc(i)-tricarbonyl complexes of fluoroquinolones for targeting bacterial infection. Metallomics 2012; 4:1197-208. [DOI: 10.1039/c2mt20132a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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27
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Farouk N, El-Tawoosy M, Ayoub S, El-Bayoumy AS. Optimization of the reaction conditions for the preparation of 99mTc-celecoxib and its biological evaluation. J Radioanal Nucl Chem 2011. [DOI: 10.1007/s10967-011-1364-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Halder KK, Nayak DK, Baishya R, Sarkar BR, Sinha S, Ganguly S, Debnath MC. (99m)Tc-labeling of ciprofloxacin and nitrofuryl thiosemicarbazone using fac-[(99m)Tc(CO)3(H2O)3] core: evaluation of their efficacy as infection imaging agents. Metallomics 2011; 3:1041-8. [PMID: 21833405 DOI: 10.1039/c1mt00068c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The aim of this study was to radiolabel ciprofloxacin (Cip) and nitrofuryl thiosemicarbazone (NFT) with the fac-[(99m)Tc(CO)(3)(H(2)O)(3)](+) core and to evaluate the ability of the radiopharmaceuticals as tracers in detecting sites of infection. Cip and NFT were radiolabeled with the fac-[(99m)Tc(CO)(3)(H(2)O)(3)](+) core and characterized by RHPLC. The stabilities of the preparations were evaluated in saline and rat serum. In vitro binding studies of the radiopharmaceuticals with S. aureus were performed. Biodistribution studies were conducted at different time points after injecting (i.v.) the radiopharmaceuticals in rats (intramuscularly infected with S. aureus) as well as in rats with sterile inflammation. To assess the infection targeting capacity of (99m)Tc-tricarbonyl ciprofloxacin and nitrofuryl thiosemicarbazone, (99m)Tc(v)O-Cip and (99m)Tc(v)O-NFT were used as control. Scintigraphic imaging studies of tricarbonyl compounds and (99m)Tc(v)O-Cip were performed at 4 h after injection. The radiochemical purities of (99m)Tc(CO)(3)-Cip and (99m)Tc(CO)(3)-NFT were between 97-98% as determined by thin layer chromatography (TLRC) and RHPLC; no further purification is necessary before injection. The radiopharmaceuticals exhibited substantial stability when incubated in isotonic saline and serum up to 24 h. Biodistribution studies showed maximum uptake in the infected rat thigh muscle at 4 h post injection and washing out at slower rate from the infected site than the oxo technetium chelate. The mean ratios of uptake in infected/non-infected thighs were 3.87:1, 3.41:1 and 3.17:1 for (99m)Tc(CO)(3)-Cip, (99m)Tc(CO)(3)-NFT and (99m)Tc(v)O-Cip respectively. During scintigraphic studies, infection sites appeared quite distinctly with (99m)Tc(CO)(3)-Cip and (99m)Tc(CO)(3)-NFT, comparable to the behaviour with (99m)Tc(v)O-Cip. These results encouraged us for further development of infection imaging radiopharmaceuticals based on the (99m)Tc-tricarbonyl core.
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Affiliation(s)
- K K Halder
- Nuclear Medicine Division, Indian Institute of Chemical Biology (CSIR), 4, Raja S. C. Mullick Road, Jadavpur, Kolkata-700032, India
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29
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Labeling and biodistribution of 99mTc-7-bromo-1,4-dihydro-4-oxo-quinolin-3-carboxylic acid complex. J Radioanal Nucl Chem 2011. [DOI: 10.1007/s10967-011-1235-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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30
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Kyprianidou P, Tsoukalas C, Chiotellis A, Papagiannopoulou D, Raptopoulou CP, Terzis A, Pelecanou M, Papadopoulos M, Pirmettis I. First example of well-characterized Re and 99mTc tricarbonyl complexes of ciprofloxacin and norfloxacin in the development of infection-specific imaging agents. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.01.060] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Motaleb MA, El-Kolaly MT, Ibrahim AB, Abd El-Bary A. Study on the preparation and biological evaluation of 99mTc–gatifloxacin and 99mTc–cefepime complexes. J Radioanal Nucl Chem 2011. [DOI: 10.1007/s10967-011-1058-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Motaleb MA, Alabdullah ES, Zaghary WA. Synthesis, radiochemical and biological characteristics of 99mTc-8-hydroxy-7-substituted quinoline complex: a novel agent for infection imaging. J Radioanal Nucl Chem 2010. [DOI: 10.1007/s10967-010-0818-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ibrahim IT, Motaleb MA, Attalah KM. Synthesis and biological distribution of 99mTc–norfloxacin complex, a novel agent for detecting sites of infection. J Radioanal Nucl Chem 2010. [DOI: 10.1007/s10967-010-0607-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Motaleb MA. Radiochemical and biological characteristics of99mTc-difloxacin and99mTc-pefloxacin for detecting sites of infection. J Labelled Comp Radiopharm 2010. [DOI: 10.1002/jlcr.1734] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Motaleb MA. Preparation, quality control and stability of99mTc-sparafloxacin complex, a novel agent for detecting sites of infection. J Labelled Comp Radiopharm 2009. [DOI: 10.1002/jlcr.1619] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Dollé F, Hinnen F, Damont A, Kuhnast B, Fookes C, Pham T, Tavitian B, Katsifis A. Radiosynthesis of [18F]PBR111, a selective radioligand for imaging the translocator protein (18 kDa) with PET. J Labelled Comp Radiopharm 2008. [DOI: 10.1002/jlcr.1559] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Damont A, Hinnen F, Kuhnast B, Schöllhorn‐Peyronneau M, James M, Luus C, Tavitian B, Kassiou M, Dollé F. Radiosynthesis of [18F]DPA‐714, a selective radioligand for imaging the translocator protein (18 kDa) with PET. J Labelled Comp Radiopharm 2008. [DOI: 10.1002/jlcr.1523] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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