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Motaleb MA, Attalah KM, Shweeta HA, Ibrahim IT. Synthesis and biological evaluation of [ 131I]iodocarvedilol as a potential radiopharmaceutical for heart imaging. BMC Chem 2023; 17:21. [PMID: 36922888 PMCID: PMC10018969 DOI: 10.1186/s13065-023-00935-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 03/03/2023] [Indexed: 03/17/2023] Open
Abstract
The optimization of the radiolabeling yield of carvedilol with iodine-131 was described. Dependence of the labeling yield of [131I]iodocarvedilol on the concentration of carvedilol, chloramine-T content, pH of the reaction mixture and reaction time was studied in details. Carvedilol was labeled with iodine-131 at pH 6 with a labeling yield of 92.6 ± 2.77% by using 100 µg carvedilol, 200 µg chloramin-T (CAT) and 30 min reaction time. The formed [131I]iodocarvedilol was nearly stable for a time up to one day. Biodistribution of [131I]iodocarvedilol was investigated in experimental animals. [131/123I]iodocarvedilol was located in the heart with a concentration of 19.6 ± 0.41% of the injected dose at 60 min post injection. It has a high heart uptake and heart to liver ratio, both of which are beneficial for high-quality SPECT (single-photon emission computerized tomography) myocardial imaging. [131/123I]iodocarvedilol solve most the drawbacks of the FDA (Food and Drug Administration) approved 99mTc-sestamibi.
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Affiliation(s)
- M A Motaleb
- Labeled Compounds Department, Hot Laboratories Centre, Egyptian Atomic Energy Authority (EAEA), 13759, Cairo, Egypt.
| | - K M Attalah
- Labeled Compounds Department, Hot Laboratories Centre, Egyptian Atomic Energy Authority (EAEA), 13759, Cairo, Egypt
| | - H A Shweeta
- Labeled Compounds Department, Hot Laboratories Centre, Egyptian Atomic Energy Authority (EAEA), 13759, Cairo, Egypt
| | - I T Ibrahim
- Labeled Compounds Department, Hot Laboratories Centre, Egyptian Atomic Energy Authority (EAEA), 13759, Cairo, Egypt
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Sanad MH, Marzook FA, Ibrahim IT, Abd-Elhalim SM, Farrag NS. Preparation and Bioevaluation of Radioiodinated Omberacetam as a Radiotracer for Brain Imaging. RADIOCHEMISTRY 2023; 65:114-121. [DOI: 10.1134/s1066362223010162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/04/2023] [Accepted: 03/06/2023] [Indexed: 09/02/2023]
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3
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Sanad MH, Rizvi SFA, Marzook FA, Farag AB. In-Silico Study, Preparation and Biological Evaluation of 99MTC-Mesalamine Complex as Radiotracer for Diagnostics and Monitoring of Ulcerative Colitis in Mice. Pharm Chem J 2022. [DOI: 10.1007/s11094-022-02706-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sanad MH, Farag AB, Marzook FA, Mandal SK. Radiocomplexation, Chromatographic Separation and Bioevaluation of [99mTc]Dithiocarbamate of Procainamide as Selective Labeled Compound for Myocardial Perfusion Imaging. Pharm Chem J 2022. [DOI: 10.1007/s11094-022-02709-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Anti-cancer, anti-inflammatory and antioxidant effects of Vit-A/C@SeNPs in mutual diethylnitrosamine and carbon tetrachloride induced hepatocellular damage in albino rats. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sanad MH, Marzook FA, Mandal SK, Baidya M. Radiocomplexation and Biological Evaluation of [99mTc]Tricarbonyl Rabeprazole as a Radiotracer for Peptic Ulcer Localization. RADIOCHEMISTRY 2022. [DOI: 10.1134/s1066362222020138] [Citation(s) in RCA: 1] [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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7
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Kaboudin B, Daliri P, Faghih S, Esfandiari H. Hydroxy- and Amino-Phosphonates and -Bisphosphonates: Synthetic Methods and Their Biological Applications. Front Chem 2022; 10:890696. [PMID: 35721002 PMCID: PMC9200139 DOI: 10.3389/fchem.2022.890696] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 04/28/2022] [Indexed: 12/02/2022] Open
Abstract
Phosphonates and bisphosphonates are stable analogs of phosphates and pyrophosphates that are characterized by one and two carbon–phosphorus bonds, respectively. Among the various phosphonates and bisphosphonates, hydroxy and amino substitutes are of interest as effective in medicinal and industrial chemistry. For example, hydroxy bisphosphonates have proven to be effective for the prevention of bone loss, especially in osteoporotic disease. On the other hand, different substitutions on the carbon atom connected to phosphorus have led to the synthesis of many different hydroxy- and amino-phosphonates and -bisphosphonates, each with its distinct physical, chemical, biological, therapeutic, and toxicological characteristics. Dialkyl or aryl esters of phosphonate and bisphosphonate compounds undergo the hydrolysis process readily and gave valuable materials with wide applications in pharmaceutical and agriculture. This review aims to demonstrate the ongoing preparation of various classes of hydroxy- and amino-phosphonates and -bisphosphonates. Furthermore, the current review summarizes and comprehensively describes articles on the biological applications of hydroxyl- and amino-phosphonates and -bisphosphonates from 2015 until today.
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Sanad MH, Eyssa HM, Marzook FA, Farag AB. Preparation and Bioevaluation of [99mTc]Tricarbonyl Omeprazole for Gastric Ulcer Localization in Mice. RADIOCHEMISTRY 2022. [DOI: 10.1134/s106636222201009x] [Citation(s) in RCA: 1] [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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Sanad M, Farag A, Bassem SA, Marzook F. Radioiodination of zearalenone and determination of Lactobacillus plantarum effect of on zearalenone organ distribution: In silico study and preclinical evaluation. Toxicol Rep 2022; 9:470-479. [PMID: 35345860 PMCID: PMC8956894 DOI: 10.1016/j.toxrep.2022.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 01/21/2022] [Accepted: 02/06/2022] [Indexed: 10/26/2022] Open
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10
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Sanad MH, Marzook FA, Farag AB, Mandal SK, Rizvi SFA, Gupta JK. Preparation, biological evaluation and radiolabeling of [99mTc]-technetium tricarbonyl procainamide as a tracer for heart imaging in mice. RADIOCHIM ACTA 2022. [DOI: 10.1515/ract-2021-1079] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Abstract
This study focuses on the synthesis and preliminary bio-evaluation of [99mTc]-technetium tricarbonyl procainamide ([99mTc]-technetium tricarbony PA) as a viable cardiac imaging agent. The compound, [99mTc]-technetium tricarbony PA, was synthesized by labelling procainamide with a [99mTc]-technetium tricarbonyl core, yielding a high radiochemical yield and radiochemical purity of 98%. Under optimal circumstances, high radiochemical yield and purity were obtained utilizing [99mTc]-technetium tricarbonyl core within 30 min of incubation at pH 9, 200 µg substrate concentration, and 100 °C reaction temperature. The heart showed a high absorption of 32.39 ± 0.88% of the injected dose/g organ (ID/g), confirming the suitability of [99mTc]-technetium tricarbonyl PA as a viable complex for heart imaging.
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Affiliation(s)
- M. H. Sanad
- Labeled Compounds Department , Hot Laboratories Center, Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - Fawzy A. Marzook
- Labeled Compounds Department , Hot Laboratories Center, Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - Ayman B. Farag
- Pharmaceutical Chemistry Department , Faculty of Pharmacy, Ahram Canadian University , Giza , Egypt
| | - Sudip Kumar Mandal
- Department of Pharmaceutical Chemistry , Dr. B. C. Roy College of Pharmacy and Allied Health Sciences , Durgapur 713206 , West Bengal , India
| | - Syed F. A. Rizvi
- College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , Gansu , P. R. China
| | - Jeetendra Kumar Gupta
- Institute of Pharmaceutical Research , GLA University Mathura , Uttar Pradesh , India
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Eyssa HM, El Refay HM, Sanad MH. Enhancement of the thermal and physicochemical properties of styrene butadiene rubber composite foam using nanoparticle fillers and electron beam radiation. RADIOCHIM ACTA 2022. [DOI: 10.1515/ract-2021-1091] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Abstract
This study investigates the physicochemical and thermal properties of styrene–butadiene rubber (SBR) nanocomposite foam. Nano-calcium carbonate (CaCO3) was prepared from eggshells (ESs) waste. Sponge rubber nanocomposites were prepared and were irradiated by electron beam (EB) radiation at 25, 75, and 150 kGy. Their physicochemical properties, including foam density, compression set (CS), hardness, abrasion loss, and expansion ratio, and their thermal stability were investigated. The physicochemical properties were enhanced by adding 2.5 phr of a foaming agent. Among the composites examined, the foam composites containing nano-CaCO3 had the lowest CS, abrasion loss, and expansion ratio and the highest hardness and foam density. The results confirmed that the thermal stability was improved by incorporating nano-CaCO3 into the SBR foam and as the radiation dose increased. The sponge containing nanoclay demonstrated an intermediate behavior, whereas that with CaCO3 nanoparticles showed low average cell diameter and size and high cell wall thickness. The radiation process enhanced the foam density, CS, abrasion loss, hardness, and thermal property of the developed nanocomposites by inducing the formation of intermolecular crosslinks within the composite matrix. The results showed that physicochemical properties improved by increasing the radiation dose at 25 kGy.
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Affiliation(s)
- H. M. Eyssa
- Radiation Chemistry Department , National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority , P. O. Box 29 , Cairo , Egypt
| | - Heba. M. El Refay
- Chemistry Department , Faculty of Science (Girls), Al Azhar University , P.O. Box: 11754 , Cairo , Egypt
| | - M. H. Sanad
- Labeled Compounds Department, Hot Labs Center , Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
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12
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Sanad MH, Eyssa HM, Marzook FA, Rizvi SFA, Farag AB, Fouzy ASM, Bassem SA, Ibrahim AA. Synthesis, Radiolabeling, and Biological Evaluation of 99mTc-Tricarbonyl Mesalamine as a Potential Ulcerative Colitis Imaging Agent. RADIOCHEMISTRY 2022. [DOI: 10.1134/s1066362221060163] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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13
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Sanad MH, Eyssa HM, Marzook FA, Farag AB, Rizvi SFA, Mandal SK, Patnaik SS, Fouzy ASM. Optimized Chromatographic Separation and Bioevalution of Radioiodinated Ilaprazole as a New Labeled Compound for Peptic Ulcer Localization in Mice. RADIOCHEMISTRY 2022. [DOI: 10.1134/s1066362221060138] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Sanad MH, Gomaa NM, El Bakary NM, Ibrahim IT, Massoud A. Radioiodination of balsalazide, bioevaluation, and characterization as a highly selective radiotracer for imaging of ulcerative colitis in mice. J Labelled Comp Radiopharm 2022; 65:71-82. [PMID: 34984721 DOI: 10.1002/jlcr.3961] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 12/26/2021] [Accepted: 12/27/2021] [Indexed: 01/01/2023]
Abstract
This work focuses on tracking ulcerative colitis in mice. High labeling yield and radiochemical purity were achieved for the formation of a [125/131 I]balsalazide radiotracer at optimum conditions of oxidizing agent content (chloramines-T [Ch-T], 75 μg), substrate amount (100 μg), pH of reaction mixture (6), reaction time (30 min), and temperature (37°C), using radioactive iodine-125 (200-450 MBq). The radiolabeled compound, [125/131 I]balsalazide, was stable in serum and saline solution during 24 h. Balsalazide is acting as a peroxisome proliferator-activated receptor (PPARγ). Biodistribution studies were carried in normal and ulcerated colon mice. High uptake of 75 ± 1.90% injected dose/g organ (ID/g) observed in ulcerated mice confirmed the suitability of [131 I]balsalazide as a novel radiotracer for ulcerative colitis imaging in mice.
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Affiliation(s)
- M H Sanad
- Labeled Compounds Department, Hot Laboratories Center, Egyptian Atomic Energy Authority, Cairo, Egypt.,Department of Physics and Engineering Mathematics, Faculty of Engineering, Ain Shams University, Cairo, Egypt
| | - Nermien M Gomaa
- Radiation Microbiology Department/Biotechnology/National Center for Research and Radiation Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Nermeen M El Bakary
- Radiation Biology Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Ismail T Ibrahim
- Labeled Compounds Department, Hot Laboratories Center, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Ayman Massoud
- Nuclear Chemistry Department, Hot Labs Center, Egyptian Atomic Energy Authority, Cairo, Egypt
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Sanad MH, Farag AB, Marzook FA, Mandal SK. Preparation, characterization, and bioevaluation of 99mTc-famotidine as a selective radiotracer for peptic ulcer disorder detection in mice. RADIOCHIM ACTA 2021. [DOI: 10.1515/ract-2021-1105] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Abstract
This work focuses on tracking peptic ulcer localized in mice. The formation of a [99mTc]dithiocarbamate of famotidine complex at optimum conditions of reaction temperature (37 °C), reaction time (30 min), pH of the reaction mixture (5), amount of substrate (100 µg), amount of reducing agent (tin (II) content, 50 µg), was achieved using radioactive Tc-99m (250–400 MBq), with labelling yield of 98% and high radiochemical purity. The in-vitro stability of [99mTc]dithiocarbamate of famotidine complex was shown to be high in rat serum for up to 8 h. Normal and ulcerated mice were used in biodistribution studies. Famotidine works by blocking histamine-2-receptor antagonists (H2RAs). The high absorption of [99mTc]dithiocarbamate of famotidine complex in stomach in amount of 27.15% injected dose/g organ (ID/g) observed in ulcerated mice for up to 24 h demonstrated its usefulness as a novel radiotracer for stomach imaging.
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Affiliation(s)
- M. H. Sanad
- Labeled Compounds Department , Hot Laboratories Center, Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
- Department of Physics and Engineering Mathematics , Faculty of Engineering, Ain Shams University , P.O. Box 11566 , Cairo , Egypt
| | - Ayman B. Farag
- Pharmaceutical Chemistry Department, Faculty of Pharmacy , Ahram Canadian University , Giza , Egypt
| | - F. A. Marzook
- Labeled Compounds Department , Hot Laboratories Center, Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - Sudip Kumar Mandal
- Department of Pharmaceutical Chemistry , Dr. B. C. Roy College of Pharmacy and Allied Health Sciences , Durgapur 713 206 , West Bengal , India
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Sanad MH, Eyssa HM, Marzook FA, Farag AB, Rizvi SFA, Mandal SK, Patnaik SS, Fouzy ASM, Bassem SA, Verpoort F. Comparative Bioevaluation of 99mTc Tricarbonyl and 99mTc-Sn(II) Lansoprazole as a Model for Peptic Ulcer Localization. RADIOCHEMISTRY 2021. [DOI: 10.1134/s1066362221050131] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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17
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Sanad MH, Eyssa HM, Marzook FA, Farag AB, Rizvi SFA, Mandal SK, Patnaik SS, Fouzy ASM, Bassem SA, Verpoort F. Radiosynthesis and Biological Evaluation of 99mTc Nitrido-Levetiracetam as a Brain Imaging Agent. RADIOCHEMISTRY 2021. [DOI: 10.1134/s106636222105012x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Design of novel radiotracer 99mTcN-tetrathiocarbamate as SPECT imaging agent: a preclinical study for GFR renal function. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01926-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Aljuhr SA, Abdelaziz G, Essa BM, Zaghary WA, Sakr TM. Hepatoprotective, antioxidant and anti-inflammatory potentials of Vit-E/C@SeNPs in rats: Synthesis, characterization, biochemical, radio-biodistribution, molecular and histopathological studies. Bioorg Chem 2021; 117:105412. [PMID: 34649153 DOI: 10.1016/j.bioorg.2021.105412] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 10/05/2021] [Indexed: 02/06/2023]
Abstract
This study aimed to synthesize a nano-structure between selenium, Vit. C, and Vit. E (Vit-E/C@SeNPs) as a promising protective and therapeutic agent for hepatocellular carcinoma. Vit-E/C@SeNPs were characterized using TEM and DLS and its zetapotential was measured to evaluate its stability. DPPH assay and SRB test were performed to estimate its antioxidant capacity and cytotoxicity, respectively. A radiosynthesis of 99mTc-Vit-E/C@SeNPs was done for further in-vivo pharmacokinetic studies on normal and solid tumor induced mice. Further, in-vivo studies were conducted to investigate Vit-E/C@SeNPs efficacy against hepatocellular damage in Wistar albino rats induced by diethylnitrosamine (DEN) / Carbon Tetra chloride (CCl4). The synthesis results showed spherical Vit-E/C@SeNPs with core size of 50 nm, radical scavenging activity (%RSC) of 75.9%, and IC50 of 27.9 µg/ml. The biochemical analysis results showed that the lower liver function biomarker values (ALT, AST, ALP, total bilirubin and GGT) has gone for the Vit-E/C@SeNPs prevention and treated group, which also showed significant depletion of liver tissue l-MDA, and obvious increase in GSH concentration and CAT activity and marked improvement in the histological feature of liver tissue. Additionally, a significant up-regulation of mRNA gene expression levels of inflammatory gene (TGFβ1, NFκB, iNOS, PPAR-γ and TNFα) and Apoptotic gene (P53) were determined by using Quantitative real-time PCR (qPCR). The values down regulate and tend to normal in prevention and control group. All of these introduce Vit-E/C@SeNPs as a promising agent as protective and therapeutic agent against DEN/ CCl4-induced hepatocellular damage (Hepatocellular carcinoma).
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Affiliation(s)
- Safa A Aljuhr
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Helwan University, Cairo, Egypt
| | - Gamal Abdelaziz
- Labeled Compounds Department, Hot Laboratories Center, Egyptian Atomic Energy Authority, 13759 Cairo, Egypt
| | - Basma M Essa
- Radioactive Isotopes and Generators Department, Hot Laboratories Center, Egyptian Atomic Energy Authority, 13759 Cairo, Egypt
| | - Wafaa A Zaghary
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Helwan University, Cairo, Egypt
| | - Tamer M Sakr
- Radioactive Isotopes and Generators Department, Hot Laboratories Center, Egyptian Atomic Energy Authority, 13759 Cairo, Egypt.
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Sanad MH, Rizvi SFA, Farag AB. Radiosynthesis and in silico bioevaluation of 131 I-Sulfasalazine as a highly selective radiotracer for imaging of ulcerative colitis. Chem Biol Drug Des 2021; 98:751-761. [PMID: 34314572 DOI: 10.1111/cbdd.13929] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 06/24/2021] [Accepted: 07/23/2021] [Indexed: 12/13/2022]
Abstract
This study demonstrated the tracking of ulcerative colitis, which is considered a stressful immune disease. Although there are many ways to test for this disease including dependence on gases, dyes, and painful anal endoscopy, these treatment modalities have many disadvantages. Hence, it is the utmost need of time to discover new methods to detect this chronic immune disease and to avoid the defects of traditional methodologies. Sulfasalazine (SSD) was labeled with iodine-131 (half-life: 8 days, Energy: 971 keV) under optimum reaction conditions including the amount of reducing agent, pH factor, chloramine-T (Ch-T) amount, and incubation period. Characterization was performed using 1 H/ 13 C-NMR, ESI-MS, and HPLC (UV/ Radio) techniques. The biodistribution study was performed in normal and ulcerative mice models, and in silico molecular docking study was performed to evaluate the possible mechanism of action to target peroxisome proliferator-activated receptor gamma (PPARγ). The high radiolabeling yield of [131 I]-sulfasalazine ([131 I]-SSD) was achieved ≥90% through the direct labeling method with radioactive iodine-131 in the presence of chloramine-T (100 μg). The radiotracer [131 I]-SSD was observed to be stable in normal saline and freshly eluted serum up to 12 hr at ambient temperature (37℃ ± 2℃). The radiotracer [131 I]-SSD showed the highest uptake in the targeted organ (i.e., ulcerative colon) which was observed to be ≥75% injected dose per gram (% ID/g) organ for 24 hr postinjection (p.i). Furthermore, in silico data collected from molecular modeling analysis of SSD and [131 I]-SSD with antimicrobial protein (PDB code: 3KEG) and peroxisome proliferator-activated receptor gamma (PPARγ) (PDB code: 4XTA) showed azoreductase activity and high binding potential for PPAR-γ site, respectively. The results of biological studies obtained in this study enlighten the usefulness of radiotracer [131 I]-SSD as a potential imaging agent for ulcerative colitis.
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Affiliation(s)
- M H Sanad
- Labeled Compounds Department, Hot Labs Center, Egyptian Atomic Energy Authority, Cairo, Egypt
| | | | - Ayman B Farag
- Department of Pharmaceutical Chemistry, Ahram Canadian University, Giza, Egypt
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Sanad MH, Eyssa HM, Gomaa NM, Marzook FA, Bassem SA. Radioiodinated esomeprazole as a model for peptic ulcer localization. RADIOCHIM ACTA 2021. [DOI: 10.1515/ract-2021-1056] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Abstract
This work focuses on tracking stomach ulcer localized in mice. High labeling yield and radiochemical purity were achieved for the formation of a [125I]esomeprazole radiotracer at optimum conditions of oxidizing agent content (chloramines-T (Ch-T), 100 μg), substrate amount (Esom, 100 μg), pH of reaction mixture (6), reaction time (30 min) and temperature (37 °C), using radioactive iodine-125 (200–450 MBq). The radiolabeled compound, [125I]esom, was stable in serum and saline solution during 24 h. Esom is acting as a histamine-2-receptor antagonist (H2RA). Biodistribution studies were carried in normal and ulcerated mice. High uptake of 78.12 ± 0.80% injected dose/g organ (ID/g) observed in ulcerated mice confirmed the suitability of [125I]esomeprazole as a novel radiotracer for stomach imaging.
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Affiliation(s)
- M. H. Sanad
- Labeled Compounds Department , Hot Labs Center, Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - H. M. Eyssa
- Radiation Chemistry Department , National Center for Research and Radiation Technology, Egyptian Atomic Energy Authority , P.O. Box 29 , Cairo , Egypt
| | - N. M. Gomaa
- Radiation Microbiology Department/Biotechnology/National Center for Research and Radiation Technology , Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - F. A. Marzook
- Labeled Compounds Department , Hot Labs Center, Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - S. A. Bassem
- Food Toxicology and Contaminants Department , National Research Centre , Dokki , Cairo , Egypt
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Sanad MH, Farag AB, Rizvi SFA. In silico and in vivo study of radio-iodinated nefiracetam as a radiotracer for brain imaging in mice. RADIOCHIM ACTA 2021. [DOI: 10.1515/ract-2020-0125] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
This study presents development and characterization of a radiotracer, [125I]iodonefiracetam ([125I]iodoNEF). Labeling with high yield and radiochemical purity was achieved through the formation of a [125I]iodoNEF radiotracer after investigating many factors like oxidizing agent content (chloramines-T (Ch-T)), substrate amount (Nefiracetam (NEF)), pH of reaction mixture, reaction time and temperature. Nefiracetam (NEF) is known as nootropic agent, acting as N-methyl-d-aspartic acid receptor ligand (NMDA). The radiolabeled compound was stable, and exhibited the logarithm of the partition coefficient (log p) value of [125I]iodonefiracetam as 1.85 (lipophilic). Biodistribution studies in normal mice confirmed the suitability of the [125I]iodoNEF radiotracer as a novel tracer for brain imaging. High uptake of 8.61 ± 0.14 percent injected dose/g organ was observed in mice
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Affiliation(s)
- M. H. Sanad
- Labeled Compounds Department , Hot Laboratories Center, Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - A. B. Farag
- Pharmaceutical Chemistry Department , Faculty of Pharmacy, Ahram Canadian University , Giza , Egypt
| | - S. F. A. Rizvi
- College of Chemistry and Chemical Engineering, Lanzhou University , Lanzhou 730000 , Gansu , PR China
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Sanad MH, Rizvi SFA, Farag AB. Synthesis, characterization, and bioevaluation of 99mTc nitrido-oxiracetam as a brain imaging model. RADIOCHIM ACTA 2021. [DOI: 10.1515/ract-2021-0003] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Abstract
In this work, the radiotracer [99mTc]nitrido-oxiracetam complex was labeled in the presence of 99mTc-nitrido as a core. In order to get the highest radiochemical purity, many effective factors have been studied such as temperature of the reaction, time of the reaction, the pH of the reaction mixture, substrate amount, and stability to give high percent more than 99%. Finally, biodistribution studies have been indicated the convenience of [99mTc]nitrido-oxiracetam as a new radiotracer that could be used in brain imaging. Giving a maximum uptake of 10.6% at 30 min post injection.
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Affiliation(s)
- M. H. Sanad
- Labeled Compounds Department , Hot Laboratories Center, Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - S. F. A. Rizvi
- College of Chemistry and Chemical Engineering, Lanzhou University , Lanzhou 730000, Gansu , P. R. China
| | - A. B. Farag
- Pharmaceutical Chemistry Department , Faculty of Pharmacy, Ahram Canadian University , Giza , Egypt
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Bayoumi NA, Emam AN. 99mTc radiolabeling of polyethylenimine capped carbon dots for tumor targeting: synthesis, characterization and biodistribution. Int J Radiat Biol 2021; 97:977-985. [PMID: 33900891 DOI: 10.1080/09553002.2021.1919781] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 03/21/2021] [Accepted: 04/12/2021] [Indexed: 12/26/2022]
Abstract
PURPOSE Due to the favorable physicochemical properties and the biocompatibility, carbon dots (CDs) have gained a great attention as a tumor targeting agent. This study investigates polyethylenimine capped CDs (PEI capped CDs) as a prospective nanocarrier of technetium-99m (99mTc) for tumor targeting. Technetium-labeled CDs could be introduced as a promising candidate for single photon emission tomography (SPECT) imaging. MATERIALS AND METHODS Polyethylenimine capped CDs were prepared by hydrothermal method using hyperbranched PEI and citric acid. For a purpose of comparison, citrate capped CDs were also prepared by microwave irradiation. Both types of CDs were characterized and radiolabeled with 99mTc using sodium borohydride (NaBH4) as a reducing agent. Biodistribution and tumor targeting efficiency of the produced radiolabeled CDs have been studied in Earlich ascites tumor mice model. RESULTS Citrate capped CDs and PEI capped CDs have been synthesized successfully and characterized. High radiochemical yield of 99mTc-citrate capped CDs 99mTc-PEI capped CDs was obtained (97 ± 0.7 and 90 ± 0.2, respectively). Biodistribution studies of 99mTc-labeled PEI capped CDs have shown a potential tumor uptake (10 ± 0.5% Radioactivity/gram tumor) with high target to non-target ratio (T/NT) around 7 at 1-h post injection. 99mTc-citrate capped CDs have achieved a lower tumor uptake level (3.8 ± 0.3% Radioactivity/gram tumor 1 h post injection). CONCLUSION This study introduces PEI capped CDs as a promising nanocarrier of 99mTc for efficient tumor targeting. Technetium-labeled PEI capped CDs could be utilized as a potential SPECT tumor imaging agent.
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Affiliation(s)
- Noha A Bayoumi
- Department of Radiolabeled Compounds, Hot Lab Centre, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Ahmed N Emam
- Refractories, Ceramics and Building Materials Department, National Research Centre, Cairo, Egypt
- Nanomedicine and Tissue Engineering Lab, Medical Research Center of Excellence National Research Centre, Cairo, Egypt
- Faculty of Postgraduate studies for Nanotechnology, Cairo University, Zayed, Egypt
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Aboumanei MH, Mahmoud AF, Motaleb MA. Formulation of chitosan coated nanoliposomes for the oral delivery of colistin sulfate: in vitro characterization, 99mTc-radiolabeling and in vivo biodistribution studies. Drug Dev Ind Pharm 2021; 47:626-635. [PMID: 33834934 DOI: 10.1080/03639045.2021.1908334] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Colistin sulfate is a very important antibiotic for the treatment of multidrug-resistant Gram-negative infections. Unfortunately, it has low oral bioavailability and several side effects following parenteral administration. The present study aims to develop chitosan-coated colistin nanoliposomes to improve the stability in the gastrointestinal tract and to enhance the oral delivery of colistin. The chitosan-coated colistin nanoliposomes were obtained via thin-film evaporation and electrostatic deposition methods using either Span 60, Tween 65 or Tween 80 as surfactants with different cholesterol: surfactant: soya lecithin ratios. The influence of systems variables was further characterized by vesicle size analysis, zeta potential (ZP), poly dispersibility index (PDI), and also their entrapment efficiency percentage (EE %) was evaluated. Various systems were formed with vesicle sizes in the nano-range, 155.64 ± 12.53 nm to 315.64 ± 15.90 nm, and EE % of 45.2 ± 2.9% to 81.8 ± 2.9%. Moreover, the ZP value of the prepared nanoliposomes switched from a negative to a positive value after chitosan coating. To track the released colistin in vivo, technetium 99m (99mTc) was incorporated into the optimum system (S-3) system via direct coupling with colistin. Chitosan-coated 99mTc-colistin nanoliposome, 99mTc-colistin suspension, and 99mTc-chitosan-coated nanoliposomes (placebo) were administered orally into bacterial infection (Escherichia coli) bearing mice. The biodistribution results showed that chitosan-coated nanoliposome significantly enhanced the bioavailability of colistin compared to colistin suspension (the commercially available). Moreover, the system effectively improved the localization of colistin at the infected muscle. In conclusion, this approach offers a promising tool for enhanced oral delivery of colistin.
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Affiliation(s)
- Mohamed H Aboumanei
- Labeled Compounds Department, Hot Lab Center, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Ashgan F Mahmoud
- Labeled Compounds Department, Hot Lab Center, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - M A Motaleb
- Labeled Compounds Department, Hot Lab Center, Egyptian Atomic Energy Authority, Cairo, Egypt
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Synthesis and biological evaluation of indolylglyoxylamide bisphosphonates, antimitotic microtubule-targeting derivatives of indibulin with improved aqueous solubility. Bioorg Med Chem Lett 2020; 30:127635. [PMID: 33132173 DOI: 10.1016/j.bmcl.2020.127635] [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] [Received: 08/07/2020] [Revised: 10/16/2020] [Accepted: 10/17/2020] [Indexed: 11/24/2022]
Abstract
Indibulin (D-24851) derivatives with bisphosphonate fragment connected to the N1 atom of imidazole ring were synthesized by alkylation of (indolyl-3)methylglyoxylates with ethylenebisphosphonate. Biological evaluation of targeted compounds 4a-d using the phenotypic sea urchin embryo assay provided evidence that replacing of p-chlorobenzene ring in indibulin by bisphosphonate group did not eliminate antimitotic microtubule destabilizing activity. The most active molecule, tetraacid 5a, at physiological pH formed tetrasodium salt 6a with aqueous solubility value of at least 10 mg/mL. Molecule 5a was more potent in the sea urchin embryo assay than the parent indibulin. This compound also exhibited pronounced cytotoxicity against A549 lung carcinoma and A375 melanoma cell lines.
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Gizawy MA, El-Tahawy MMT, Motaleb MA. Radiosynthesis, molecular modeling and biodistribution of 99mTc-Protoporphyrin as a preclinical model for tumor diagnosis. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s1088424620500352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Porphyrins are among the most important and widely used compounds involved in a variety of chemical and biochemical applications. These molecules exhibit very special properties that encourage researchers to label many derivatives with diagnostic or therapeutic radionuclides for medical applications. This study reports the radiolabeling and biodistribution of [Formula: see text]Tc-protoporphyrin IX ([Formula: see text]Tc-PPIX) as a novel potential solid-tumor imaging agent. The factors affecting the radiolabeling process were varied to achieve maximum radiochemical yield. [Formula: see text]Tc-PPIX was obtained in high yield of 97.34 ± 0.21% and high stability in serum up to 24 h. The radiochemical yield of [Formula: see text]Tc-PPIX was assessed by a combination of a paper chromatographic technique and HPLC. A computational analysis for all the potential structures that may be formed due to the interaction between protoporphyrin IX and technetium was performed via the DFT method of calculations in gas phase to predict the most likely structure. Molecular docking was further employed to shed light on the nature of the interaction between the most stable complexes with the target protein. Finally, the in-vivo biodistribution of [Formula: see text]Tc-PPIX complex was evaluated in solid-tumor-bearing mice and high tumor/tissue ratio of 5.17 ± 0.34 at 60 min post injection was obtained. Our finding clearly suggests [Formula: see text]Tc-PPIX as a potential SPECT agent for tumor imaging.
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Affiliation(s)
- Mohamed A. Gizawy
- Labeled Compounds Department, Hot Labs Center, Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt
- Radioisotopes Production Facility (RPF), Egyptian Second Research Reactor (ETRR-2), Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt
| | | | - Mohamed A. Motaleb
- Labeled Compounds Department, Hot Labs Center, Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt
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Exhibiting the diagnostic face of selenium nanoparticles as a radio-platform for tumor imaging. Bioorg Chem 2020; 100:103910. [DOI: 10.1016/j.bioorg.2020.103910] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/28/2020] [Accepted: 05/02/2020] [Indexed: 12/23/2022]
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Korany M, Mahmoud B, Ayoub SM, Sakr TM, Ahmed SA. Synthesis and radiolabeling of vitamin C-stabilized selenium nanoparticles as a promising approach in diagnosis of solid tumors. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07195-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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30
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Kikuta J, Shirazaki M, Sudo T, Mizuno H, Morimoto A, Suehara R, Minoshima M, Kikuchi K, Ishii M. Dynamic Analyses of the Short-Term Effects of Different Bisphosphonates Using Intravital Two-Photon Microscopy. JBMR Plus 2018; 2:362-366. [PMID: 30460339 PMCID: PMC6237210 DOI: 10.1002/jbm4.10057] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 04/16/2018] [Accepted: 04/26/2018] [Indexed: 11/06/2022] Open
Abstract
Bisphosphonates are commonly used for the treatment of bone disorders such as osteoporosis; however, the mechanism by which they affect the dynamics of living mature osteoclasts in vivo remains unknown. Here, we describe the short-term effects of different bisphosphonates on controlling the bone resorptive activity of mature osteoclasts in living bone tissues of mice using intravital two-photon microscopy with a pH-sensing chemical fluorescent probe. Three types of nitrogen-containing bisphosphonates, risedronate, alendronate, and minodronate, inhibited osteoclastic acidification during osteoporotic conditions just 12 hours after i.v. injection. Among the three types of drugs, risedronate was the most effective at increasing osteoclast motility and changing the localization of proton pumps, which led to an inhibition of bone resorption. Together, these results demonstrate that the intravital imaging system is a useful tool for evaluating the similarities and differences in currently used antibone resorptive drugs. © 2018 The Authors. JBMR Plus published by Wiley Periodicals, Inc. on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Junichi Kikuta
- Department of Immunology and Cell Biology Graduate School of Medicine and Frontier Biosciences Osaka University 2-2 Yamada-oka Suita Osaka 565-0871 Japan
| | - Mai Shirazaki
- Department of Immunology and Cell Biology Graduate School of Medicine and Frontier Biosciences Osaka University 2-2 Yamada-oka Suita Osaka 565-0871 Japan
| | - Takao Sudo
- Department of Immunology and Cell Biology Graduate School of Medicine and Frontier Biosciences Osaka University 2-2 Yamada-oka Suita Osaka 565-0871 Japan
| | - Hiroki Mizuno
- Department of Immunology and Cell Biology Graduate School of Medicine and Frontier Biosciences Osaka University 2-2 Yamada-oka Suita Osaka 565-0871 Japan
| | - Akito Morimoto
- Department of Immunology and Cell Biology Graduate School of Medicine and Frontier Biosciences Osaka University 2-2 Yamada-oka Suita Osaka 565-0871 Japan
| | - Riko Suehara
- Department of Immunology and Cell Biology Graduate School of Medicine and Frontier Biosciences Osaka University 2-2 Yamada-oka Suita Osaka 565-0871 Japan
| | - Masafumi Minoshima
- Department of Material and Life Science Graduate School of Engineering Osaka University 2-1 Yamada-oka Suita Osaka 565-0871 Japan
| | - Kazuya Kikuchi
- Department of Material and Life Science Graduate School of Engineering Osaka University 2-1 Yamada-oka Suita Osaka 565-0871 Japan
| | - Masaru Ishii
- Department of Immunology and Cell Biology Graduate School of Medicine and Frontier Biosciences Osaka University 2-2 Yamada-oka Suita Osaka 565-0871 Japan
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Motaleb MA, Selim AA, El-Tawoosy M, Sanad MH, El-Hashash MA. Synthesis, characterization, radiolabeling and biodistribution of a novel cyclohexane dioxime derivative as a potential candidate for tumor imaging. Int J Radiat Biol 2018; 94:590-596. [DOI: 10.1080/09553002.2018.1466067] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- M. A. Motaleb
- Labeled Compounds Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - Adli A. Selim
- Labeled Compounds Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - M. El-Tawoosy
- Labeled Compounds Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - M. H. Sanad
- Labeled Compounds Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - M. A. El-Hashash
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia, Cairo, Egypt
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32
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Synthesis, radiolabeling and biological distribution of a new dioxime derivative as a potential tumor imaging agent. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5310-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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33
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Merino P, Maiuolo L, Delso I, Algieri V, De Nino A, Tejero T. Chemical approaches to inhibitors of isoprenoid biosynthesis: targeting farnesyl and geranylgeranyl pyrophosphate synthases. RSC Adv 2017. [DOI: 10.1039/c6ra28316k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The chemical synthesis of farnesyl and geranylgeranyl pyrophosphate synthase inhibitors are surveyed.
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Affiliation(s)
- Pedro Merino
- Departamento de Síntesis y Estructura de Biomoléculas
- ISQCH
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
| | - Loredana Maiuolo
- Dipartimento di Chimica
- Università della Calabria
- 87036 Rende
- Italy
| | - Ignacio Delso
- Departamento de Síntesis y Estructura de Biomoléculas
- ISQCH
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
| | - Vincenzo Algieri
- Dipartimento di Chimica
- Università della Calabria
- 87036 Rende
- Italy
| | - Antonio De Nino
- Dipartimento di Chimica
- Università della Calabria
- 87036 Rende
- Italy
| | - Tomas Tejero
- Departamento de Síntesis y Estructura de Biomoléculas
- ISQCH
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
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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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In silico study and biological evaluation of 99mTc-tricabonyl oxiracetam as a selective imaging probe for AMPA receptors. J Radioanal Nucl Chem 2016. [DOI: 10.1007/s10967-016-5120-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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36
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Sanad M, Sallam K, Marzook F, Abd-Elhaliem S. Radioiodination and biological evaluation of candesartan as a tracer for cardiovascular disorder detection. J Labelled Comp Radiopharm 2016; 59:484-491. [DOI: 10.1002/jlcr.3435] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 06/30/2016] [Accepted: 07/26/2016] [Indexed: 11/10/2022]
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
| | - Kh.M. Sallam
- Labeled Compounds Department, Radioisotopes Production and Radioactive Sources Division; Hot Laboratories Center, Atomic Energy Authority; P.O. Box 13759 Cairo Egypt
| | - F.A. Marzook
- Labeled Compounds Department, Radioisotopes Production and Radioactive Sources Division; Hot Laboratories Center, Atomic Energy Authority; P.O. Box 13759 Cairo Egypt
| | - S.M. Abd-Elhaliem
- Labeled Compounds Department, Radioisotopes Production and Radioactive Sources Division; Hot Laboratories Center, Atomic Energy Authority; P.O. Box 13759 Cairo Egypt
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