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Ibrahim MM, Basalious EB, El-Nabarawi MA, Makhlouf AI, Sayyed ME, Ibrahim IT. Nose to brain delivery of mirtazapine via lipid nanocapsules: Preparation, statistical optimization, radiolabeling, in vivo biodistribution and pharmacokinetic study. Drug Deliv Transl Res 2024:10.1007/s13346-024-01528-7. [PMID: 38376620 DOI: 10.1007/s13346-024-01528-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2024] [Indexed: 02/21/2024]
Abstract
Mirtazapine (MZPc) is an antidepressant drug which is approved by the FDA. It has low bioavailability, which is only 50%, in spite of its rapid absorption when orally administered owing to high first-pass metabolism. This study was oriented towards delivering intranasal (IN) mirtazapine by a direct route to the brain by means of preparing lipid nanocapsules (LNCs) as a targeted drug delivery system. MZP-LNCs were constructed by solvent-free phase inversion temperature technique applying D-Optimal mixture design to study the impact of 3 formulation variables on the characterization of the formulated nanocapsules. Independent variables were percentage of Labrafac oil, percentage of Solutol and percentage of water. Dependent variables were particle size, polydispersity index (PDI), Zeta potential and solubilization capacity. Nanocapsules of the optimized formula loaded with MZP were of spherical shape as confirmed by transmission electron microscopy with particle diameter of 20.59 nm, zeta potential of - 5.71, PDI of 0.223 and solubilization capacity of 7.21 mg/g. The in vivo pharmacokinetic behavior of intranasal MZP-LNCs in brain and blood was correlated to MZP solution after intravenous (IV) and intranasal administration in mice. In vivo biodistribution of the drug in mice was assessed by a radiolabeling technique using radioiodinated mirtazapine (131I-MZP). Results showed that intranasal MZP-LNCs were able to deliver higher amount of MZP to the brain with less drug levels in blood when compared to the MZP solution after IV and IN administration. Moreover, the percentage of drug targeting efficiency (%DTE) of the optimized MZP-LNCs was 332.2 which indicated more effective brain targeting by the intranasal route. It also had a direct transport percentage (%DTP) of 90.68 that revealed a paramount contribution of the nose to brain pathway in the drug delivery to the brain.
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Affiliation(s)
- Mennatullah M Ibrahim
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Emad B Basalious
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Mohamed A El-Nabarawi
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Amal Ia Makhlouf
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Cairo, Egypt
| | - Marwa Eid Sayyed
- Radio Labeled Compounds Department, Hot Labs Centre, Egyptian Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt
| | - Ismail Taha Ibrahim
- Radio Labeled Compounds Department, Hot Labs Centre, Egyptian Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt
- Faculty of Pharmacy, Albayan University, Baghdad, Iraq
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Signore A, Bentivoglio V, Varani M, Lauri C. Current Status of SPECT Radiopharmaceuticals for Specific Bacteria Imaging. Semin Nucl Med 2023; 53:142-151. [PMID: 36609002 DOI: 10.1053/j.semnuclmed.2022.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Imaging infection still represents a challenge for researchers. Despite nuclear medicine (NM) offers valuable tools able to discriminate between infections and inflammation, there is an unmet clinical need to develop new strategies able to specifically target the causative pathogen, to select the best antimicrobial treatment for each patient and to accurately assess therapeutic efficacy. These aspects are commonly addressed by microbiology or histology but the diagnosis often relies on invasive procedures that are prone to contamination or sample bias and do not reflect the spatial heterogeneity of the infective process. Therefore, in the era of personalized medicine and treatment, a lot of efforts are in play to improve a personalized diagnosis. Molecular imaging is an ideal candidate for this purpose and, indeed, research is going fast to this direction aiming to find more selective and proper antimicrobial treatments and to overcome broad-spectrum antibiotic use, which still represents the major cause of bacterial drug-resistance. Several approaches for specifically image bacteria have been proposed and provided encouraging perspectives in preclinical studies. Nevertheless, the majority of these promising approaches are still confined in "bench stages" and crucial issues still need to be addressed before their translation in clinical practice. This review will focus on radiolabeled antibiotics for SPECT imaging of bacteria, their mechanisms of action, their potentiality and limitations for "bed-side" applications.
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Affiliation(s)
- Alberto Signore
- Nuclear Medicine Unit, Department of Medical-Surgical Sciences and of Translational Medicine, Faculty of Medicine and Psychology, "Sapienza" University of Rome, Italy.
| | - Valeria Bentivoglio
- Nuclear Medicine Unit, Department of Medical-Surgical Sciences and of Translational Medicine, Faculty of Medicine and Psychology, "Sapienza" University of Rome, Italy
| | - Michela Varani
- Nuclear Medicine Unit, Department of Medical-Surgical Sciences and of Translational Medicine, Faculty of Medicine and Psychology, "Sapienza" University of Rome, Italy
| | - Chiara Lauri
- Nuclear Medicine Unit, Department of Medical-Surgical Sciences and of Translational Medicine, Faculty of Medicine and Psychology, "Sapienza" University of Rome, Italy
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Cod liver oil nano-structured lipid carriers (Cod-NLCs) as a promising platform for nose to brain delivery: Preparation, in vitro optimization, ex vivo cytotoxicity & in vivo biodistribution utilizing radioiodinated zopiclone. Int J Pharm X 2023; 5:100160. [PMID: 36647457 PMCID: PMC9840360 DOI: 10.1016/j.ijpx.2023.100160] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/18/2022] [Accepted: 01/03/2023] [Indexed: 01/06/2023] Open
Abstract
Nano-structured lipid carriers containing zopiclone were prepared as a targeted drug delivery system to convey zopiclone directly to brain via nasal route. Nano-structured lipid carriers were constructed adopting hot emulsification-ultrasonication method using palmitic acid in place of the solid lipid, cod liver oil as liquid lipid, and poloxamer 407 as a surfactant. A three-factor three-level central composite face-centered design was used to optimize the formulated nano-structured lipid carriers. The independent factors were lipid amount (X1), surfactant amount (X2), and sonication time (X3). The examined responses were entrapment efficiency (EE,Y1,%), particle size (PS,Y2,nm), zeta potential(mV), polydispersity index(PDI,Y3), in vitro release(Q8h,Y4,%) and dissolution efficiency (DE,Y5,%). The optimum formula showed high entrapment efficiency of 94.31% ± 2.44, in vitro drug release of 83.89% ± 1.77 with dissolution efficiency equals 88.63% ± 2.01, small particle size of 71.27 nm ± 13.57 and low polydispersity index 0.097 ± 0.15. In vivo biodistribution in mice was evaluated by a radiobiological technique using radioiodinated zopiclone([131I]iodo-ZP). Results revealed the superiority of the intranasal route to deliver zopiclone directly to brain faster and higher brain uptake (6.9 ± 1.02%ID/g at 5 min post-administration). The current study confirmed that intranasal administration of nano-structured lipid carriers had great potential as an effective tool for targeted brain zopiclone delivery for insomnia treatment.
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Synthesis, physicochemical and in vitro biological evaluation of 99mTc-cefepime radioconjugates, and development of DTPA-cefepime single vial kit formulation for labelling with technetium-99m. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08363-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Rizvi SFA, Jabbar T, Shahid W, Sanad MH, Zhang H. Facile One-Pot Strategy for Radiosynthesis of 99mTc-Doxycycline to Diagnose Staphylococcus aureus in Infectious Animal Models. Appl Biochem Biotechnol 2022; 194:2672-2683. [PMID: 35239149 DOI: 10.1007/s12010-022-03856-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 02/24/2022] [Indexed: 01/16/2023]
Abstract
The accurate and early diagnosis of infection is an important feature in the biomedical sciences for better treatment and to decrease the rate of morbidity associated with diseases. Doxycycline (DC) is a semisynthetic antibiotic that belongs to tetracycline family and usually prescribed to treat a variety of infections. The objective of the present research work was to develop a new radiopharmaceutical 99mTc-Doxycycline (99mTc-DC), by using SnCl2·2H2O as a reducing agent for diagnostic applications. It was confirmed through this study that 99mTc-DC possessed high radiolabeling yield (95%). In vitro studies were performed by incubating 99mTc-DC in human serum at 37 °C. The in vitro binding interaction of the labeled antibiotic was analyzed with bacterial strain (live Staphylococcus aureus cells), and its stability was further determined. Moreover, for in vivo infection imaging study, the infection was induced with S. aureus (gram positive) cells intramuscularly injected in mice models followed by biodistribution studies for 99mTc-DC that were performed. Biodistribution studies of 99mTc-DC showed that the radiotracer was significantly accumulated at the site of infection and indicated the renal route of excretion. Scintigraphic images obtained as a result of in vivo study showed good uptake of prepared radiotracer (99mTc-DC) in the infectious lesions at 1-, 4-, and 24-h post-injection. Target-to-non-target ratios for 99mTc-DC were significantly different for the infectious lesions and non-infected tissues and remained 2.13 ± 0.3 up to 24-h post-injection of 99mTc-DC. 99mTc-DC showed preferential binding to living bacterial infected sites as compared to other parts of the body, and thus it can be inferred that 99mTc-DC might be a potential candidate to diagnose the infection.
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Affiliation(s)
- Syed Faheem Askari Rizvi
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China.
| | - Tania Jabbar
- Department of Nuclear Medicine, Pakistan Institute of Nuclear Medicine (PINUM) Cancer Hospital, Faisalabad, 38000, Punjab, Pakistan
| | - Wajeehah Shahid
- Department of Physics, The University of Lahore, Lahore, 54000, Punjab, Pakistan
| | - M H Sanad
- Labeled Compounds Department, Hot Labs Center, Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt
| | - Haixia Zhang
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China.
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Sayed S, Elsharkawy FM, Amin MM, Shamsel-Din HA, Ibrahim AB. Brain targeting efficiency of intranasal clozapine-loaded mixed micelles following radio labeling with Technetium-99m. Drug Deliv 2021; 28:1524-1538. [PMID: 34266360 PMCID: PMC8288143 DOI: 10.1080/10717544.2021.1951895] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The research objective is to design intranasal (IN) brain targeted CLZ-loaded polymeric nanomicellar systems (PNMS) aiming to improve central systemic CLZ bioavailability. Direct equilibrium method was used to prepare CLZ-PNMS using two hydrophobic poloxamines; Tetronic® 904 (T904) and Tetronic® 701 (T701) and one hydrophilic poloxamer; Synperonic® PE/F127 (F127). Optimization is based on higher percent transmittance, solubilizing efficiency, and in vitro release after 24 h with smaller particle size was achieved using Design-Expert® software. The optimized formula was further evaluated via TEM, ex vivo nasal permeation in addition to in vivo biodistribution using radiolabeling technique of the optimized formula by Technetium-99m (99mTc). The optimized formula M5 has small size (217 nm) with relative high percentage of transmittance (97.72%) and high solubilization efficacy of 60.15-fold following 92.79% of CLZ released after 24 h. Ex vivo nasal permeation showed higher flux of 36.62 μg/cm2.h compared to 7.324 μg/cm2.h for CLZ suspension with no histological irritation. In vivo biodistribution results showed higher values of radioactivity percentage of the labeled optimized formula (99mTc-M5) in brain and brain/blood ratio following IN administration of 99mTc-M5 complex which were greater than their corresponding values following intravenous route. It is obvious that nasal delivery of CLZ-PNMS could be a promising way to improve central systemic CLZ bioavailability.
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Affiliation(s)
- Sinar Sayed
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Fatma M Elsharkawy
- Regulatory Affairs Department, Al Andalous for Pharmaceutical Industries, Giza, Egypt
| | - Maha M Amin
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Hesham A Shamsel-Din
- Labeled Compounds Department, Hot Labs Center, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Ahmed B Ibrahim
- Labeled Compounds Department, Hot Labs Center, Egyptian Atomic Energy Authority, Cairo, Egypt
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7
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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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8
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Ordoñez AA, Jain SK. Imaging of Bacterial Infections. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00089-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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9
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Ibrahim AB, Shamsel-Din HA, Hussein AS, Salem MA. Brain-targeting by optimized 99mTc-olanzapine: in vivo and in silico studies. Int J Radiat Biol 2020; 96:1017-1027. [PMID: 32338554 DOI: 10.1080/09553002.2020.1761568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Purpose: Olanzapine (OLZ) is an atypical antipsychotic agent that is characterized by low brain porousness. The present work aimed to develop radiolabeled olanzapine (OLZ) without colloidal impurities and evaluate its biodistribution following intravenous (I.V.) and intranasal (I.N.) administration as a potential agent for brain diagnosis. Materials and methods: OLZ was radiolabeled with technetium-99m by using sodium dithionite as the reducing agent. Biodistribution of 99mTc-OLZ complex in mice following I.V. and I.N. administrations was examined. Furthermore, a molecular docking study was performed.Results: Sodium dithionite labeling procedure resulted in highest radiochemical yield (96.30 ± 0.09%) and in vitro stability in serum up to 8 h. Biodistribution study of 99mTc-OLZ complex showed high brain uptake following I.N. (6.2 ± 0.12% ID/g) and I.V. (5.5 ± 0.09% ID/g) at 0.5 and 1 h post administration (P.I.), respectively. Docking into two brain targets predicts higher affinity of 99mTc-OLZ than free OLZ. Additionally, docking to P-glycoproteins shows less affinity for the radiolabelled OLZ and hence it is expected to be associated with better brain exposure than free OLZ.Conclusion: These chemical and preliminary biological merits strongly suggest that the 99mTc-OLZ complex with new reducing agent could be used as a potential diagnostic agent for brain.
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Affiliation(s)
- Ahmed B Ibrahim
- Labeled Compounds Department, Hot Labs Center, Atomic Energy Authority, Cairo, Egypt
| | - Hesham A Shamsel-Din
- Labeled Compounds Department, Hot Labs Center, Atomic Energy Authority, Cairo, Egypt
| | - A Samir Hussein
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, October University of Modern Sciences and Arts (MSA), Giza, Egypt
| | - M Alaraby Salem
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, October University of Modern Sciences and Arts (MSA), Giza, Egypt
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Abd El-Halim SM, Abdelbary GA, Amin MM, Zakaria MY, Shamsel-Din HA, Ibrahim AB. Stabilized oral nanostructured lipid carriers of Adefovir Dipivoxil as a potential liver targeting: Estimation of liver function panel and uptake following intravenous injection of radioiodinated indicator. ACTA ACUST UNITED AC 2020; 28:517-532. [PMID: 32564282 DOI: 10.1007/s40199-020-00355-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 06/15/2020] [Indexed: 12/14/2022]
Abstract
PURPOSE Adefovir dipivoxil (AD), a nucleoside reverse transcriptase inhibitor is effective against Hepatitis B virus. Its poor oral bioavailability leads to frequent administration causing severe adverse effects. Thereby the entrapment of AD within lipid nanoparticulate systems is a way of increasing AD oral bioavailability as a result of improving intestinal permeability with efficient liver-targeted delivery together with higher drug stability during storage. METHODS AD-loaded nanostructured lipid carriers (AD-NLCs) were prepared via solvent emulsification diffusion technique adopting 24 full factorial design to study the effect of lipid percentage, presence of egg yolk lecithin, surfactant type and percentage on entrapment efficiency (E.E.%), particle size and percent in-vitro drug released after 8 h (Q8hrs). RESULTS Formula (F12) showed E.E.% of 90.5 ± 0.2%, vesicle size of 240.2 ± 2.5 nm and Q8hrs of 58.55 ± 9.4% was selected as the optimum formula with desirability value of 0.757 based on highest EE%, lowest P.S. and Q8hrs. Further evaluation of the optimized formula using radioiodinated rose bengal (RIRB) in thioacetamide induced liver damage in Swiss Albino mice revealed a higher liver uptake of 22 ± 0.01% ID/g (percent injected dose/g organ) and liver uptake/Blood (T/B) ratio of 2.22 ± 0.067 post 2 h of I.V injection of RIRB compared to 9 ± 0.01% ID/g and 0.64 ± 0.017 in untreated group, respectively. CONCLUSION NLCs could be successfully used as oral drug delivery carriers of the antiviral drug Adefovir Dipivoxil to the liver with higher stability and oral bioavailability. Graphical abstract.
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Affiliation(s)
- Shady M Abd El-Halim
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, October 6 University, Central Axis, 6th of October City, Giza, 12585, Egypt.
| | - Ghada A Abdelbary
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Maha M Amin
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Mohamed Y Zakaria
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy and Pharmaceutical Industry, Port Said University, Port said, 42526, Egypt
| | - Hesham A Shamsel-Din
- Department of Labeled Compounds, Hot Labs Center, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt
| | - Ahmed B Ibrahim
- Department of Labeled Compounds, Hot Labs Center, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt
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Comparison of DOTA and NODAGA as chelates for 68Ga-labelled CDP1 as novel infection PET imaging agents. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06693-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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12
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Fahmy AM, El-Setouhy DA, Ibrahim AB, Habib BA, Tayel SA, Bayoumi NA. Penetration enhancer-containing spanlastics (PECSs) for transdermal delivery of haloperidol: in vitro characterization, ex vivo permeation and in vivo biodistribution studies. Drug Deliv 2018; 25:12-22. [PMID: 29219628 PMCID: PMC6058714 DOI: 10.1080/10717544.2017.1410262] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Haloperidol (Hal) is one of the widely used antipsychotic drugs. When orally administered, it suffers from low bioavailability due to hepatic first pass metabolism. This study aimed at developing Hal-loaded penetration enhancer-containing spanlastics (PECSs) to increase transdermal permeation of Hal with sustained release. PECSs were successfully prepared using ethanol injection method showing reasonable values of percentage entrapment efficiency, particle size, polydispersity index and zeta potential. The statistical analysis of the ex vivo permeation parameters led to the choice of F1L – made of Span® 60 and Tween® 80 at the weight ratio of 4:1 along with 1% w/v Labrasol® – as the selected formula (SF). SF was formulated into a hydrogel by using 2.5% w/v of HPMC K4M. The hydrogel exhibited good in vitro characteristics. Also, it retained its physical and chemical stability for one month in the refrigerator. The radiolabeling of SF showed a maximum yield by mixing of 100 µl of diluted formula with 50 µl saline having 200 MBq of 99mTc and containing 13.6 mg of reducing agent (NaBH4) and volume completed to 300 µl by saline at pH 10 for 10 min as reaction time. The biodistribution study showed that the transdermal 99mTc-SF hydrogel exhibited a more sustained release pattern and longer circulation duration with pulsatile behavior in the blood and higher brain levels than the oral 99mTc-SF dispersion. So, transdermal hydrogel of SF may be considered a promising sustained release formula for Hal maintenance therapy with reduced dose size and less frequent administration than oral formula.
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Affiliation(s)
- Abdurrahman M Fahmy
- a Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy , Cairo University , Cairo , Egypt
| | - Doaa Ahmed El-Setouhy
- a Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy , Cairo University , Cairo , Egypt
| | - Ahmed B Ibrahim
- b Labeled Compounds Department , Hot Lab. Center, Egyptian Atomic Energy Authority , Cairo , Egypt
| | - Basant A Habib
- a Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy , Cairo University , Cairo , Egypt
| | - Saadia A Tayel
- a Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy , Cairo University , Cairo , Egypt
| | - Noha A Bayoumi
- b Labeled Compounds Department , Hot Lab. Center, Egyptian Atomic Energy Authority , Cairo , Egypt
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Ordonez AA, Jain SK. Pathogen-Specific Bacterial Imaging in Nuclear Medicine. Semin Nucl Med 2018. [DOI: 10.1053/j.semnuclmed.2017.11.003
expr 890398765 + 809902709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
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Abstract
When serious infections are suspected, patients are often treated empirically with broad-spectrum antibiotics while awaiting results that provide information on the bacterial class and species causing the infection, as well as drug susceptibilities. For deep-seated infections, these traditional diagnostic techniques often rely on tissue biopsies to obtain clinical samples which can be expensive, dangerous, and has the potential of sampling bias. Moreover, these procedures and results can take several days and may not always provide reliable information. This combination of time and effort required for proper antibiotic selection has become a barrier leading to indiscriminate broad-spectrum antibiotic use. Exposure to nosocomial infections and indiscriminate use of broad-spectrum antibiotics are responsible for promoting bacterial drug-resistance leading to substantial morbidity and mortality, especially in hospitalized and immunosuppressed patients. Therefore, early diagnosis of infection and targeted antibiotic treatments are urgently needed to reduce morbidity and mortality caused by bacterial infections worldwide. Reliable pathogen-specific bacterial imaging techniques have the potential to provide early diagnosis and guide antibiotic treatments.
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Affiliation(s)
- Alvaro A Ordonez
- Center for Infection and Inflammation Imaging Research, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Sanjay K Jain
- Center for Infection and Inflammation Imaging Research, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD.
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Tunçel A, Ocakoglu K, Colak SG, Yılmaz O, Öztürk İ, Yurt F. Evaluation of infection imaging potential of 131I-labeled imidazolium salt. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-017-5691-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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16
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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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17
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Naqvi SAR, Rasheed R, Ahmed MT, Zahoor AF, Khalid M, Mahmood S. Radiosynthesis and preclinical studies of 177Lu-labeled sulfadiazine: a possible theranostic agent for deep-seated bacterial infection. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5477-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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18
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Dutta J, Naicker T, Ebenhan T, Kruger HG, Arvidsson PI, Govender T. Synthetic approaches to radiochemical probes for imaging of bacterial infections. Eur J Med Chem 2017; 133:287-308. [DOI: 10.1016/j.ejmech.2017.03.060] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 03/23/2017] [Accepted: 03/24/2017] [Indexed: 02/08/2023]
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Ahmed MT, Naqvi SAR, Rasheed R, Zahoor AF, Usman M, Hussain Z. Technetium-99m-Labeled Sulfadiazine: a Targeting Radiopharmaceutical for Scintigraphic Imaging of Infectious Foci Due To Escherichia coli in Mouse and Rabbit Models. Appl Biochem Biotechnol 2017; 183:374-384. [DOI: 10.1007/s12010-017-2451-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 03/02/2017] [Indexed: 12/15/2022]
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20
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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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21
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Akbar MU, Ahmad MR, Shaheen A, Mushtaq S. A review on evaluation of technetium-99m labeled radiopharmaceuticals. J Radioanal Nucl Chem 2016. [DOI: 10.1007/s10967-016-5019-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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22
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Auletta S, Galli F, Lauri C, Martinelli D, Santino I, Signore A. Imaging bacteria with radiolabelled quinolones, cephalosporins and siderophores for imaging infection: a systematic review. Clin Transl Imaging 2016; 4:229-252. [PMID: 27512687 PMCID: PMC4960278 DOI: 10.1007/s40336-016-0185-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 05/17/2016] [Indexed: 12/20/2022]
Abstract
Bacterial infections are still one of the main causes of patient morbidity and mortality worldwide. Nowadays, many imaging techniques, like computed tomography or magnetic resonance imaging, are used to identify inflammatory processes, but, although they recognize anatomical modifications, they cannot easily distinguish bacterial infective foci from non bacterial infections. In nuclear medicine, many efforts have been made to develop specific radiopharmaceuticals to discriminate infection from sterile inflammation. Several compounds (antimicrobial peptides, leukocytes, cytokines, antibiotics…) have been radiolabelled and tested in vitro and in vivo, but none proved to be highly specific for bacteria. Indeed factors, including the number and strain of bacteria, the infection site, and the host condition may affect the specificity of tested radiopharmaceuticals. Ciprofloxacin has been proposed and intensively studied because of its easy radiolabelling method, broad spectrum, and low cost, but at the same time it presents some problems such as low stability or the risk of antibiotic resistance. Therefore, in the present review studies with ciprofloxacin and other radiolabelled antibiotics as possible substitutes of ciprofloxacin are reported. Among them we can distinguish different classes, such as cephalosporins, fluoroquinolones, inhibitors of nucleic acid synthesis, inhibitors of bacterial cell wall synthesis and inhibitors of protein synthesis; then also others, like siderophores or maltodextrin-based probes, have been discussed as bacterial infection imaging agents. A systematic analysis was performed to report the main characteristics and differences of each antibiotic to provide an overview about the state of the art of imaging infection with radiolabelled antibiotics.
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Affiliation(s)
- S. Auletta
- Nuclear Medicine Unit, Department of Medical-Surgical Sciences and of Translational Medicine, Faculty of Medicine and Psychology, St. Andrea Hospital, “Sapienza” University of Rome, Via di Grottarossa 1035, 00189 Rome, Italy
| | - F. Galli
- Nuclear Medicine Unit, Department of Medical-Surgical Sciences and of Translational Medicine, Faculty of Medicine and Psychology, St. Andrea Hospital, “Sapienza” University of Rome, Via di Grottarossa 1035, 00189 Rome, Italy
| | - C. Lauri
- Nuclear Medicine Unit, Department of Medical-Surgical Sciences and of Translational Medicine, Faculty of Medicine and Psychology, St. Andrea Hospital, “Sapienza” University of Rome, Via di Grottarossa 1035, 00189 Rome, Italy
| | - D. Martinelli
- Microbiology Unit, Department of Clinical and Molecular Medicine, “Sapienza” University of Rome, Rome, Italy
| | - I. Santino
- Microbiology Unit, Department of Clinical and Molecular Medicine, “Sapienza” University of Rome, Rome, Italy
| | - Alberto Signore
- Nuclear Medicine Unit, Department of Medical-Surgical Sciences and of Translational Medicine, Faculty of Medicine and Psychology, St. Andrea Hospital, “Sapienza” University of Rome, Via di Grottarossa 1035, 00189 Rome, Italy
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23
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Ilem-Ozdemir D, Asikoglu M, Ozkilic H, Yilmaz F, Hosgor-Limoncu M, Ayhan S. Gamma scintigraphy and biodistribution of (99m)Tc-cefotaxime sodium in preclinical models of bacterial infection and sterile inflammation. J Labelled Comp Radiopharm 2016; 59:109-16. [PMID: 26880705 DOI: 10.1002/jlcr.3374] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Revised: 11/02/2015] [Accepted: 12/28/2015] [Indexed: 11/11/2022]
Abstract
(99m)Tc-cefotaxime sodium ((99m)Tc-CEF) was developed and standardized under varying conditions of reducing and antioxidant agent concentration, pH, radioactivity dose, and reducing agent type. Labeling studies were performed by changing the selected parameters one by one, and optimum labeling conditions were determined. After observing the conditions for maximum labeling efficiency and stability, lyophilized freeze dry kits were prepared accordingly. Simple method for radiolabeling of CEF with (99m)Tc has been developed and standardized. Labeling efficiency of (99m)Tc-CEF was assessed by both radio thin-layer chromatography and radio high-performance liquid chromatography and found higher than 90%. The labeled compound was found to be stable in saline and human serum up to 24 h. Two different freeze dry kits were developed and evaluated. Based on the data obtained from this study, both products were stable for 6 months with high labeling efficiency. The prepared cold kit was found sterile and pyrogen free. The bacterial infection and sterile inflammation imaging capacity of (99m)Tc-CEF was evaluated. Based on the in vivo studies, (99m)Tc-CEF has higher uptake in infected and inflamed thigh muscle than healthy thigh muscle.
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Affiliation(s)
- Derya Ilem-Ozdemir
- Faculty of Pharmacy, Department of Radiopharmacy, Ege University, Bornova, Izmir, Turkey
| | - Makbule Asikoglu
- Faculty of Pharmacy, Department of Radiopharmacy, Ege University, Bornova, Izmir, Turkey
| | - Hayal Ozkilic
- Faculty of Medicine, Department of Nuclear Medicine, Ege University, Bornova, Izmir, Turkey
| | - Ferda Yilmaz
- Faculty of Pharmacy, Department of Pharmaceutical Microbiology, Ege University, Bornova, Izmir, Turkey
| | - Mine Hosgor-Limoncu
- Faculty of Pharmacy, Department of Pharmaceutical Microbiology, Ege University, Bornova, Izmir, Turkey
| | - Semin Ayhan
- Faculty of Medicine, Department of Pathology, Celal Bayar University, Manisa, Turkey
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24
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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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25
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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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26
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Synthesis and biological evaluation of technetium-sarafloxacin complex for infection imaging. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4188-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Mirshojaei SF. Advances in infectious foci imaging using 99mTc radiolabelled antibiotics. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4003-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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28
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Motaleb MA, El-Tawoosy M, Mohamed SB, Borei IH, Ghanem HM, Massoud AA. 99m Tc-labeled teicoplanin and its biological evaluation in experimental animals for detection of bacterial infection. RADIOCHEMISTRY 2014. [DOI: 10.1134/s1066362214050154] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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29
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İlem-Özdemir D, Asikoglu M, Ozkilic H, Yilmaz F, Hosgor-Limoncu M, Ayhan S. 99mTc-Doxycycline hyclate: a new radiolabeled antibiotic for bacterial infection imaging. J Labelled Comp Radiopharm 2013; 57:36-41. [DOI: 10.1002/jlcr.3135] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 09/04/2013] [Accepted: 09/27/2013] [Indexed: 01/11/2023]
Affiliation(s)
- Derya İlem-Özdemir
- Faculty of Pharmacy; Department of Radiopharmacy; Ege University; Bornova Izmir Turkey
| | - Makbule Asikoglu
- Faculty of Pharmacy; Department of Radiopharmacy; Ege University; Bornova Izmir Turkey
| | - Hayal Ozkilic
- Faculty of Medicine; Department of Nuclear Medicine; Ege University; Bornova Izmir Turkey
| | - Ferda Yilmaz
- Faculty of Pharmacy; Department of Pharmaceutical Microbiology; Ege University; Bornova Izmir Turkey
| | - Mine Hosgor-Limoncu
- Faculty of Pharmacy; Department of Pharmaceutical Microbiology; Ege University; Bornova Izmir Turkey
| | - Semin Ayhan
- Faculty of Medicine; Department of Pathology; Celel Bayar University; Manisa Turkey
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30
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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. [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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