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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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2
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Ebrahem EMM, Sayed GH, Gad GNA, Anwer KE, Selim AA. Histopathology, pharmacokinetics and estimation of interleukin-6 levels of Moringa oleifera leaves extract-functionalized selenium nanoparticles against rats induced hepatocellular carcinoma. Cancer Nanotechnol 2022. [DOI: 10.1186/s12645-022-00123-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Abstract
Background
Hepatocellular carcinoma (HCC) is one of the most dangerous cancers in all the world. This study focused on prevention and therapy of hepatocellular carcinoma (HCC) using Moringa oleifera extract combined with vitamin C and selenium in a nanoplatform (MO/asc.-Se-NPs).
Results
Full characterization of MO/asc.-Se-NPs was performed by using different analytical techniques (TEM, DLS, zeta-sizer), and its antioxidant capacity was measured by DPPH assay. Biodistribution study was performed with the aid of radiolabeling technique using technetium-99m in normal albino mice. HCC was induced in Wister albino rats to evaluate the efficiency of MO/asc.-Se-NPs in the treatment of HCC. The biomarker analysis (ALT, AST and ALB) shows improvement in its values in prevention and treated groups by using MO/asc.-Se NP. The levels of inflammatory marker interleukin 6 (IL6 tissue homogenate) was improved by decreasing its values in these two groups also. Histology section of tissue liver showed alleviation in treated and prevention groups.
Conclusions
In conclusion, MO/asc.-Se-NPs can be used as a potential agent for prevention and treatment of HCC after further preclinical studies.
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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: 6] [Impact Index Per Article: 2.0] [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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El-Ghareb WI, Swidan MM, Ibrahim IT, Abd El-Bary A, Tadros MI, Sakr TM. 99mTc-doxorubicin-loaded gallic acid-gold nanoparticles ( 99mTc-DOX-loaded GA-Au NPs) as a multifunctional theranostic agent. Int J Pharm 2020; 586:119514. [PMID: 32565281 DOI: 10.1016/j.ijpharm.2020.119514] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/04/2020] [Accepted: 06/05/2020] [Indexed: 12/21/2022]
Abstract
The development of cancer theranostic nanomedicines is recommended to concurrently achieve and evaluate the therapeutic benefit and progress. The current work aims to develop gallic acid-gold nanoparticles (GA-Au NPs) as a theranostic probe for 99mTc-Doxorubicin (99mTc-DOX) based on the spatiotemporal release pattern induced intra-tumoral (IT) delivery. DOX-loaded GA-Au NPs were developed and identified via UV-Vis spectroscopy. The system was characterized for drug loading efficiency%, particle size, zeta potential, topography, in vitro DOX release and anti-proliferative activity against the MCF-7 cell-line. The factors influencing radiolabeling efficiency of DOX with 99mTc (DOX concentration, stannous chloride concentration, reaction time and pH) were optimized. The in vitro stability in mice serum and in vivo distribution studies in mice of 99mTc-DOX-loaded GA-Au NPs were investigated following IV and IT administration. Dox-loaded GA-Au NPs had a loading efficiency of 91%, a small particle size (≈50 nm), a promising zeta potential (-20 mV) and a sustained drug release profile at pH 5.3. GA-Au NPs exhibited increased anti-proliferative activity, with approximately a four-fold lower IC50 value (0.15 μg/ml) than free DOX. The optimized radiolabeling efficiency of 99mTc-DOX was ≈93%. It showed good physiological stability in mice serum for at least 8 h. The IT delivery of 99mTc-DOX-loaded GA-Au NPs in tumor-induced mice showed dramatic tumor accumulation. A maximum magnitude of 86.73%ID/g was achieved, at 15 min post-injection, with a target/non-target ratio of ≈56. 99mTc-DOX-loaded GA-Au NPs could be used for the selective IT delivery of a chemotherapeutic agent and an imaging agent to a target organ.
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Affiliation(s)
- Walaa I El-Ghareb
- Labeled Compounds Department, Hot Labs Center, Egyptian Atomic Energy Authority, 13759 Cairo, Egypt
| | - Mohamed M Swidan
- Labeled Compounds Department, Hot Labs Center, Egyptian Atomic Energy Authority, 13759 Cairo, Egypt
| | - Ismail T Ibrahim
- Labeled Compounds Department, Hot Labs Center, Egyptian Atomic Energy Authority, 13759 Cairo, Egypt; Pharmacology Department, College of Pharmacy, Al-Bayan University, 10006 Baghdad, Iraq
| | - Ahmed Abd El-Bary
- Pharmaceutics and Industrial Pharmacy Department, Faculty of Pharmacy, Cairo University, 11562 Cairo, Egypt
| | - Mina Ibrahim Tadros
- Pharmaceutics and Industrial Pharmacy Department, Faculty of Pharmacy, Cairo University, 11562 Cairo, Egypt.
| | - Tamer M Sakr
- Radioactive Isotopes and Generator Department, Hot Labs Center, Egyptian Atomic Energy Authority, 13759 Cairo, Egypt; Radioisotopes Production Facility, Second Egyptian Research Reactor Complex, Egyptian Atomic Energy Authority, 13759 Cairo, Egypt
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Sakr TM, El-Hashash MA, El-Mohty AA, Essa BM. 99mTc-gallic-gold nanoparticles as a new imaging platform for tumor targeting. Appl Radiat Isot 2020; 164:109269. [PMID: 32819507 DOI: 10.1016/j.apradiso.2020.109269] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 05/16/2020] [Accepted: 06/03/2020] [Indexed: 01/14/2023]
Abstract
Early and accurate detection of tumor assists in identifying more effective therapies. Gold nanoparticles (GNPs) were synthesized by green synthesis method using gallic acid (GA) then characterized and labeled with technetium-99m. This new platform was biologically evaluated in both normal and solid tumor bearing mice. The in-vivo study of [99mTc]Tc-gallic-GNPs via both I.V. and I.T injecton showed a high accumulation in tumor site. As a result, [99mTc]Tc-gallic-GNPs can be afforded as a potential nano-platform for tumor imaging.
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Affiliation(s)
- Tamer M Sakr
- Radioactive Isotopes and Generator Department, Hot Labs Center, Egyptian Atomic Energy Authority (EAEA), P.O. Box 13759, Cairo, Egypt; Radioisotopes Production Facility, Second Egyptian Research Reactor Complex, Egyptian Atomic Energy Authority, 13759, Cairo, Egypt.
| | - M A El-Hashash
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - A A El-Mohty
- Radioactive Isotopes and Generator Department, Hot Labs Center, Egyptian Atomic Energy Authority (EAEA), P.O. Box 13759, Cairo, Egypt
| | - Basma M Essa
- Radioactive Isotopes and Generator Department, Hot Labs Center, Egyptian Atomic Energy Authority (EAEA), P.O. Box 13759, Cairo, Egypt.
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Shamsel-Din HA, Gizawy MA, Zaki EG, Elgendy A. A novel 99m
Tc-diester complex as tumor targeting agent: Synthesis, radiolabeling, and biological distribution study. J Labelled Comp Radiopharm 2020; 63:376-385. [DOI: 10.1002/jlcr.3841] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 04/09/2020] [Accepted: 04/10/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Hesham A. Shamsel-Din
- Radioisotopes Production Facility (RPF), Second Research Reactor (ETRR-2); Atomic Energy Authority; Cairo Egypt
- Labeled Compounds Department, Hot Labs Center; Atomic Energy Authority; Cairo Egypt
| | - Mohamed A. Gizawy
- Radioisotopes Production Facility (RPF), Second Research Reactor (ETRR-2); Atomic Energy Authority; Cairo Egypt
- Labeled Compounds Department, Hot Labs Center; Atomic Energy Authority; Cairo Egypt
| | - Elsayed G. Zaki
- Petroleum Applications Department; Egyptian Petroleum Research Institute; Cairo Egypt
| | - Amr Elgendy
- Petroleum Applications Department; Egyptian Petroleum Research Institute; Cairo Egypt
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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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Radioiodinated esmolol as a highly selective radiotracer for myocardial perfusion imaging: In silico study and preclinical evaluation. Appl Radiat Isot 2018; 137:41-49. [DOI: 10.1016/j.apradiso.2018.03.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 02/26/2018] [Accepted: 03/07/2018] [Indexed: 11/23/2022]
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9
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Molecular modeling and preclinical evaluation of radioiodinated tenoxicam for inflammatory disease diagnosis. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-5770-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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10
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In Silico-Based Repositioning of Phosphinothricin as a Novel Technetium-99m Imaging Probe with Potential Anti-Cancer Activity. Molecules 2018; 23:molecules23020496. [PMID: 29473879 PMCID: PMC6017358 DOI: 10.3390/molecules23020496] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 02/08/2018] [Accepted: 02/16/2018] [Indexed: 12/25/2022] Open
Abstract
l-Phosphinothricin (glufosinate or 2-amino-4-((hydroxy(methyl) phosphinyl) butyric acid ammonium salt (AHPB)), which is a structural analog of glutamate, is a recognized herbicide that acts on weeds through inhibition of glutamine synthetase. Due to the structural similarity between phosphinothricin and some bisphosphonates (BPs), this study focuses on investigating the possibility of repurposing phosphinothricin as a bisphosphonate analogue, particularly in two medicine-related activities: image probing and as an anti-cancer drug. As BP is a competitive inhibitor of human farnesyl pyrophosphate synthase (HFPPS), in silico molecular docking and dynamic simulations studies were established to evaluate the binding and stability of phosphinothricin with HFPPS, while the results showed good binding and stability in the active site of the enzyme in relation to alendronate. For the purpose of inspecting bone-tissue accumulation of phosphinothricin, a technetium (99mTc)–phosphinothricin complex was developed and its stability and tissue distribution were scrutinized. The radioactive complex showed rapid, high and sustained uptake into bone tissues. Finally, the cytotoxic activity of phosphinothricin was tested against breast and lung cancer cells, with the results indicating cytotoxic activity in relation to alendronate. All the above results provide support for the use of phosphinothricin as a potential anti-cancer drug and of its technetium complex as an imaging probe.
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Abouhussein DM, Khattab A, Bayoumi NA, Mahmoud AF, Sakr TM. Brain targeted rivastigmine mucoadhesive thermosensitive In situ gel: Optimization, in vitro evaluation, radiolabeling, in vivo pharmacokinetics and biodistribution. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2017.09.021] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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12
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Nano-technology contributions towards the development of high performance radioisotope generators: The future promise to meet the continuing clinical demand. Appl Radiat Isot 2017; 129:67-75. [DOI: 10.1016/j.apradiso.2017.08.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 07/21/2017] [Accepted: 08/07/2017] [Indexed: 11/17/2022]
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Sakr TM, Ibrahim AB, Fasih TW, Rashed HM. Preparation and biological profile of 99mTc-lidocaine as a cardioselective imaging agent using 99mTc eluted from 99Mo/99mTc generator based on Al–Mo gel. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5560-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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99mTc-hexoprenaline and 131I-dapoxetine: preparation, in silico modeling and biological evaluation as promising lung scintigraphy radiopharmaceuticals. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5500-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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15
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16
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Rashed HM, Shamma RN, Basalious EB. Contribution of both olfactory and systemic pathways for brain targeting of nimodipine-loaded lipo-pluronics micelles: in vitro characterization and in vivo biodistribution study after intranasal and intravenous delivery. Drug Deliv 2016; 24:181-187. [PMID: 28156162 PMCID: PMC8241048 DOI: 10.1080/10717544.2016.1236848] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 09/12/2016] [Indexed: 11/03/2022] Open
Abstract
Nimodipine (NM) is the only FDA-approved drug for treating subarachnoid hemorrhage induced vasospasm. NM has poor oral bioavailability (5-13%) due to its low aqueous solubility, and extensive first pass metabolism. The objective of this study is to develop radiolabeled NM-loaded LPM and to test its ability prolong its circulation time, reduce its frequency of administration and eventually target it to the brain tissue. NM was radiolabeled with 99mTc by direct labeling method using sodium dithionite. Different reaction conditions that affect the radiolabeling yield were studied. The in vivo pharmacokinetic behavior of the optimum NM-loaded LPM formulation in blood, heart, and brain tissue was compared with NM solution, after intravenous and intranasal administration. Results show that the radioactivity percentage (%ID/g) in the heart of mice following administration of 99mTc-NM loaded LPM were lower compared with that following administration of 99mTc-NM solution, which is greatly beneficial to minimize the cardiovascular side effects. Results also show that the %ID/g in the blood, and brain following intravenous administration of 99mTc-NM-loaded LPM were higher at all sampling intervals compared with that following intravenous administration of 99mTc-NM solution. This would be greatly beneficial for the treatment of neurovascular diseases. The drug-targeting efficiency of NM to the brain after intranasal administration was calculated to be 1872.82%. The significant increase in drug solubility, enhanced drug absorption and the long circulation time of the NM-loaded LPM could be promising to improve nasal and parenteral delivery of NM.
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Affiliation(s)
- Hassan M. Rashed
- Department of Labeled Compounds, Hot Labs. Center, Egyptian Atomic Energy Authority, Cairo, Egypt and
| | - Rehab N. Shamma
- 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
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Nour SA, Abdelmalak NS, Naguib MJ, Rashed HM, Ibrahim AB. Intranasal brain-targeted clonazepam polymeric micelles for immediate control of status epilepticus: in vitro optimization, ex vivo determination of cytotoxicity, in vivo biodistribution and pharmacodynamics studies. Drug Deliv 2016; 23:3681-3695. [PMID: 27648847 DOI: 10.1080/10717544.2016.1223216] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Clonazepam (CZ) is an anti-epileptic drug used mainly in status epilepticus (SE). The drug belongs to Class II according to BCS classification with very limited solubility and high permeability and it suffers from extensive first-pass metabolism. The aim of the present study was to develop CZ-loaded polymeric micelles (PM) for direct brain delivery allowing immediate control of SE. PM were prepared via thin film hydration (TFH) technique adopting a central composite face-centered design (CCFD). The seventeen developed formulae were evaluated in terms of entrapment efficiency (EE), particle size (PS), polydispersity index (PDI), zeta potential (ZP), and in vitro release. For evaluating the in vivo behavior of the optimized formula, both biodistrbution using 99mTc-radiolabeled CZ and pharmacodynamics studies were done in addition to ex vivo cytotoxicty. At a drug:Pluronic® P123:Pluronic® L121 ratio of 1:20:20 (PM7), a high EE, ZP, Q8h, and a low PDI was achieved. The biodistribution studies revealed that the optimized formula had significantly higher drug targeting efficiency (DTE = 242.3%), drug targeting index (DTI = 144.25), and nose-to-brain direct transport percentage (DTP = 99.30%) and a significant prolongation of protection from seizures in comparison to the intranasally administered solution with minor histopathological changes. The declared results reveal the ability of the developed PM to be a strong potential candidate for the emergency treatment of SE.
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Affiliation(s)
- Samia A Nour
- a Department of Pharmaceutics , Faculty of Pharmacy, Cairo University , Cairo , Egypt and
| | - Nevine S Abdelmalak
- a Department of Pharmaceutics , Faculty of Pharmacy, Cairo University , Cairo , Egypt and
| | - Marianne J Naguib
- a Department of Pharmaceutics , Faculty of Pharmacy, Cairo University , Cairo , Egypt and
| | - Hassan M Rashed
- b Labeled Compounds Department, Hot Lab. Center , Egyptian Atomic Energy Authority , Cairo , Egypt
| | - Ahmed B Ibrahim
- b Labeled Compounds Department, Hot Lab. Center , Egyptian Atomic Energy Authority , Cairo , Egypt
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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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19
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99mTc-zolmitriptan: radiolabeling, molecular modeling, biodistribution and gamma scintigraphy as a hopeful radiopharmaceutical for lung nuclear imaging. Radiol Med 2016; 121:935-943. [DOI: 10.1007/s11547-016-0677-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 08/16/2016] [Indexed: 12/18/2022]
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20
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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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21
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Swidan MM, Sakr TM, Motaleb MA, El-Bary AA, El-Kolaly MT. Radioiodinated acebutolol as a new highly selective radiotracer for myocardial perfusion imaging. J Labelled Comp Radiopharm 2014; 57:593-9. [DOI: 10.1002/jlcr.3223] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 06/17/2014] [Accepted: 07/03/2014] [Indexed: 11/12/2022]
Affiliation(s)
- M. M. Swidan
- Labeled Compound Department; Hot Labs Center, Atomic Energy Authority; PO13759 Cairo Egypt
| | - T. M. Sakr
- Radioactive Isotopes and Generator Department; Hot Labs Center, Atomic Energy Authority; PO13759 Cairo Egypt
| | - M. A. Motaleb
- Labeled Compound Department; Hot Labs Center, Atomic Energy Authority; PO13759 Cairo Egypt
| | - A. Abd El-Bary
- Pharmaceutics and Industrial Pharmacy Department; Faculty of Pharmacy, Cairo University; PO11562 Cairo Egypt
| | - M. T. El-Kolaly
- Labeled Compound Department; Hot Labs Center, Atomic Energy Authority; PO13759 Cairo Egypt
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