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Abo-Taleb HA, Mabrouk MM, El-Tabakh MAM, Abdelzaher OF, Nabeeh A, Elokaby MA, Ashour M, Sallam AE, Mansour AT, El-Feky MMM. The potential use of daphnia meal as substitute for fishmeal in diets of hybrid red tilapia affects growth performance, activities of digestive enzymes, antioxidant, immune status and intestinal histological parameters. J Anim Physiol Anim Nutr (Berl) 2024. [PMID: 38305567 DOI: 10.1111/jpn.13925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 02/03/2024]
Abstract
The current study aimed to evaluate growth performance, digestive enzyme activities, antioxidant status, nonspecific immune response and intestinal histological status of red tilapia fed Daphnia meal (DM) as a substitute for fishmeal (FM). Hybrid red tilapia (Oreochromis mossambicus × Oreochromis aureus) fry (0.54 ± 0.05 g fish-1 ) was allocated in nylon haba cages (100 fry m-3 ) for 2 weeks as an acclimation period. The fish were divided into five groups (three replicates each). The experimental diets were prepared by replacing FM with DM at concentrations of 25%, 50%, 75% and 100% respectively. The results indicated that fish fed increasing levels of DM (50%-75%) experienced high growth performance, feed utilisation and protein content. The activities of digestive enzymes were significantly increased in all groups fed DM diets compared to the control. The antioxidant balance was improved by decreasing the level of malondialdehyde and increased the total antioxidant capacity, catalase, superoxide dismutase and glutathione reductase activities in the liver of fish fed DM. The nonspecific immune response, including lysozyme, alkaline phosphatase activities and total protein level improved significantly with increasing FM substitution levels by DM in a dose-dependent manner. Histometric analysis of the intestinal wall revealed an increase in the villus length, crypts depth and goblet cells number in groups fed DM meal up to 50% substitution level compared to other treatments. It may be concluded from results of this feeding trial that in the aquaculture of hybrid tilapia, FM may be substituted with up to 50% DM without compromising intestinal health, growth performance and immune status of the fish.
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Affiliation(s)
- Hamdy A Abo-Taleb
- Zoology Department, Faculty of Science, Al-Azhar University, Cairo, Egypt
- School of Marine and Atmospheric Science, Stony Brook University, Southampton, New York, USA
| | - Mohamed M Mabrouk
- Fish Production Department, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
| | | | | | - Ahmed Nabeeh
- Zoology Department, Faculty of Science, Al-Azhar University, Cairo, Egypt
| | - Mohamed A Elokaby
- National Institute of Oceanography and Fisheries (NIOF), Cairo, Egypt
| | - Mohamed Ashour
- National Institute of Oceanography and Fisheries (NIOF), Cairo, Egypt
| | - Ahmed E Sallam
- National Institute of Oceanography and Fisheries (NIOF), Cairo, Egypt
| | - Abdallah T Mansour
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, Al-Ahsa, Saudi Arabia
- Fish and Animal Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria, Egypt
| | - Mohamed M M El-Feky
- Aquatic Resources, Natural Resources Studies and Research Department, Zagazig University, Zagazig, Egypt
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Alprol AE, Mansour AT, El-Beltagi HS, Ashour M. Algal Extracts for Green Synthesis of Zinc Oxide Nanoparticles: Promising Approach for Algae Bioremediation. Materials (Basel) 2023; 16:ma16072819. [PMID: 37049112 PMCID: PMC10096179 DOI: 10.3390/ma16072819] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 03/24/2023] [Accepted: 03/30/2023] [Indexed: 05/31/2023]
Abstract
Zinc oxide nanoparticles (ZnO-NPs) possess unique properties, making them a popular material across various industries. However, traditional methods of synthesizing ZnO-NPs are associated with environmental and health risks due to the use of harmful chemicals. As a result, the development of eco-friendly manufacturing practices, such as green-synthesis methodologies, has gained momentum. Green synthesis of ZnO-NPs using biological substrates offers several advantages over conventional approaches, such as cost-effectiveness, simplicity of scaling up, and reduced environmental impact. While both dried dead and living biomasses can be used for synthesis, the extracellular mode is more commonly employed. Although several biological substrates have been successfully utilized for the green production of ZnO-NPs, large-scale production remains challenging due to the complexity of biological extracts. In addition, ZnO-NPs have significant potential for photocatalysis and adsorption in the remediation of industrial effluents. The ease of use, efficacy, quick oxidation, cost-effectiveness, and reduced synthesis of harmful byproducts make them a promising tool in this field. This review aims to describe the different biological substrate sources and technologies used in the green synthesis of ZnO-NPs and their impact on properties. Traditional synthesis methods using harmful chemicals limit their clinical field of use. However, the emergence of algae as a promising substrate for creating safe, biocompatible, non-toxic, economic, and ecological synthesis techniques is gaining momentum. Future research is required to explore the potential of other algae species for biogenic synthesis. Moreover, this review focuses on how green synthesis of ZnO-NPs using biological substrates offers a viable alternative to traditional methods. Moreover, the use of these nanoparticles for industrial-effluent remediation is a promising field for future research.
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Affiliation(s)
- Ahmed E. Alprol
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt
| | - Abdallah Tageldein Mansour
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Al Hofuf 31982, Saudi Arabia
- Fish and Animal Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21531, Egypt
| | - Hossam S. El-Beltagi
- Agricultural Biotechnology Department, College of Agriculture and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Biochemistry Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Mohamed Ashour
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt
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Mansou AT, Ashour M, Ruiz CE, Kumar N, Esteban MA. Editorial: Physiological performance of aquatic animals under farming-induced stress conditions. Front Physiol 2023; 14:1136611. [PMID: 36726847 PMCID: PMC9885320 DOI: 10.3389/fphys.2023.1136611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 01/09/2023] [Indexed: 01/17/2023] Open
Affiliation(s)
- Abdallah Tageldein Mansou
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, Al-Ahsa, Saudi Arabia,Fish and Animal Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria, Egypt,*Correspondence: Abdallah Tageldein Mansou,
| | - Mohamed Ashour
- National Institute of Oceanography and Fisheries, Cairo, Egypt
| | - Cristóbal Espinosa Ruiz
- ICAR-National Institute of Abiotic Stress Management, Ministry of Agriculture, Govt of India, Baramatio, India
| | - Neeraj Kumar
- Cell biology and histology, Faculty of biology, Murcia University, Murcia, Spain
| | - Maria Angeles Esteban
- ICAR-National Institute of Abiotic Stress Management, Ministry of Agriculture, Govt of India, Baramatio, India
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Ashour M, Al-Souti AS, Hassan SM, Ammar GAG, Goda AMAS, El-Shenody R, Abomohra AEF, El-Haroun E, Elshobary ME. Commercial Seaweed Liquid Extract as Strawberry Biostimulants and Bioethanol Production. Life (Basel) 2022; 13:life13010085. [PMID: 36676034 PMCID: PMC9865835 DOI: 10.3390/life13010085] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 12/29/2022]
Abstract
Seaweeds are increasingly intriguing as a sustainable source of bioactive compounds. They have applications in agriculture, fuels, feed, and food products. To become a cost-competitive product with zero waste, a biorefinery approach is applied, where several products are valorized at the same time. True-Algae-Max (TAM®) has been investigated for its ability to improve the yield and nutritional facts of a strawberry plant. Three concentrations of TAM (0, 50, and 100%) were examined by foliar spray in 2017 with 50% NPK chemical fertilizer. Results indicated that growth, yield, chlorophyll, and potassium content were significantly improved by TAM treatments. TAM50 % resulted in maximum root length, leaf area, plant fresh weight, fruit weight, and yield with an increase ranging from 10 to 110% compared to control. Compared to the NPK control, strawberries grown with TAM50% improved total soluble solids (TSS) from 7.58 to 10.12% and anthocyanin from 23.08 to 29.42 mg CGE 100 g-1. Noteworthily, this reduced total sugar, and total phenolics were boosted by TAM applications, while non-reducing sugar was reduced compared to control. On the other hand, whole seaweed biomass and TAM residuals were used for bioethanol production by acid scarification. The maximum bioethanol yield was observed in residual biomass (0.34 g g-1 dw), while the whole seaweed biomass showed only 0.20 g g-1 dw. These results proved the biorefinery concept of using seaweed extract as a biostimulator and bioethanol production.
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Affiliation(s)
- Mohamed Ashour
- National Institute of Oceanography and Fisheries, NIOF, Cairo 11516, Egypt
- Correspondence: (M.A.); (A.S.A.-S.)
| | - Ahmed Said Al-Souti
- AL Hail Aquaculture Unit, Department of Marine Science, Fisheries College of Agriculture and Marine Science, Sultan Qaboos University, Muscat 123, Oman
- Correspondence: (M.A.); (A.S.A.-S.)
| | - Shimaa M. Hassan
- Department of Vegetable Crops, Faculty of Agriculture (El-Shatby), Alexandria University, Alexandria 21545, Egypt
| | - Gamal A. G. Ammar
- Biotechnology Unit, Plant Production Department, Arid Lands Cultivation Research Institute, The City of Scientific Research and Technological Applications, Alexandria 21934, Egypt
| | | | - Rania El-Shenody
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Abd El-Fatah Abomohra
- New Enery and Environmental Laboratory (NEEL), School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China
| | - Ehab El-Haroun
- Fish Nutrition Research Laboratory, Animal Production Department, Faculty of Agriculture, Cairo University, Cairo 11562, Egypt
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Mohamed T, Farhan A, Ahmed H, Ashour M, Mamdouh S, Schuch R. Nonlinear Optical Properties of Zinc Oxide Nanoparticle Colloids Prepared by Pulsed Laser Ablation in Distilled Water. Nanomaterials (Basel) 2022; 12:4220. [PMID: 36500847 PMCID: PMC9737988 DOI: 10.3390/nano12234220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
The nonlinear optical properties of zinc oxide nanoparticles (ZnONPs) in distilled water were measured using a femtosecond laser and the Z-scan technique. The ZnONPs colloids were created by the ablation of zinc bulk in distilled water with a 532 nm Nd: YAG laser. Transmission electron microscopy, an ultraviolet-visible spectrophotometer, and atomic absorption spectrophotometry were used to determine the size, shape, absorption spectra, and concentration of the ZnONPs colloids. The nonlinear absorption coefficient and nonlinear refractive index were measured at different excitation wavelengths and intensities. The nonlinear absorption coefficient of the ZnONPs colloids was found to be positive, caused by reverse saturable absorption, whereas the nonlinear refractive index was found to be negative due to self-defocusing in the ZnONPs. Both laser parameters, such as excitation wavelength and input intensity, and nanoparticle features, such as concentration and size, were found to influence the nonlinear optical properties of the ZnONPs.
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Affiliation(s)
- Tarek Mohamed
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
- Department of Engineering, Faculty of Advanced Technology and Multidiscipline, Universitas Airlangga, Surabaya 60115, Indonesia
| | - Ali Farhan
- Al Anbar Health Directorate, Ramadi 31001, Iraq
| | - Hanan Ahmed
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Mohamed Ashour
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
- High Institute of Optics Technology HIOT, Sheraton Heliopolis, Cairo 11799, Egypt
| | - Samar Mamdouh
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Reinhold Schuch
- Physics Department, Stockholm University, AlbaNova, 10691 Stockholm, Sweden
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Mohamed T, El-Motlak MH, Mamdouh S, Ashour M, Ahmed H, Qayyum H, Mahmoud A. Excitation Wavelength and Colloids Concentration-Dependent Nonlinear Optical Properties of Silver Nanoparticles Synthesized by Laser Ablation. Materials (Basel) 2022; 15:7348. [PMID: 36295412 PMCID: PMC9610074 DOI: 10.3390/ma15207348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/13/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
We reported experimental results from investigations that employed the Z-scan method to explore the dependence of silver nanoparticles' (AgNPs) nonlinear optical properties on the excitation wavelength, AgNP concentration, and size. Using a 532 nm Nd: YAG laser beam at 100 mJ/pulse for different ablation times, AgNPs were synthesized from a silver target immersed in distilled water. UV-Vis spectroscopy and an atomic absorption spectrometer are used to characterize the optical properties of laser-synthesized AgNPs as well as their concentrations. The AgNPs' size and shape are determined using a transmission electron microscope (TEM). The laser-synthesized AgNPs are spherical, with an average particle size of 12 to 13.2 nm. Whatever the ablation time, the AgNP colloids exhibit reversed saturable absorption and a negative nonlinear refractive index (n2). Both n2 and the nonlinear absorption coefficient (α3) increase as the AgNP concentration increases. As the excitation wavelength and average size of the AgNPs increase, n2 and α3 decrease.
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Affiliation(s)
- Tarek Mohamed
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
- Department of Engineering, Faculty of Advanced Technology and Multidiscipline, Universitas Airlangga, Gubeng 60115, Indonesia
| | - Majed H. El-Motlak
- Al Anbar Health Directorate, Training and Human Development Centre, Al-Anbar 31001, Iraq
| | - Samar Mamdouh
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Mohamed Ashour
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
- High Institute of Optics Technology HIOT, Sheraton Heliopolis, Cairo 11799/5, Egypt
| | - Hanan Ahmed
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Hamza Qayyum
- Department of Physics, COMSATS University Islamabad, Park Road, Islamabad 45550, Pakistan
| | - Alaa Mahmoud
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
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Ashour M, Alprol AE, Khedawy M, Abualnaja KM, Mansour AT. Equilibrium and Kinetic Modeling of Crystal Violet Dye Adsorption by a Marine Diatom, Skeletonema costatum. Materials (Basel) 2022; 15:ma15186375. [PMID: 36143687 PMCID: PMC9505319 DOI: 10.3390/ma15186375] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/05/2022] [Accepted: 09/07/2022] [Indexed: 05/31/2023]
Abstract
Significant efforts have been made to improve adsorbents capable of eliminating pollutants from aqueous solutions, making it simple and quick to separate from the treated solution. In the current study, the removal of Crystal Violet Dye (CVD) from an aqueous synthetic solution onto a marine diatom alga, Skeletonema costatum, was investigated. Different experiments were conducted as a function of different pH, contact time, adsorbent dosage, temperature, and initial CVD concentration. The highest adsorption efficiency (98%) was obtained at 0.4 g of S. costatum, pH 3, and a contact time of 120 min, at 25 °C. Furthermore, Fourier-transform infrared spectroscopy (FTIR) results display that binding of CVD on S. costatum may occur by electrostatic and complexation reactions. Moreover, the Brunauer-Emmett-Teller surface area analysis (BET) obtained was 87.17 m2 g-1, which, in addition to a scanning electron microscope (SEM), reveals large pores that could enhance the uptake of large molecules. However, the equilibrium adsorption models were conducted by Halsey, Langmuir, Freundlich, Henderson, and Tempkin isotherm. In addition, multilayer adsorption isotherm best described the uptake of CVD onto S. costatum. The maximum monolayer adsorption capacity (qmax) was 6.410 mg g-1. Moreover, thermodynamic parameters of the adsorption studies suggested that the uptake of CVD onto S. costatum was endothermic and spontaneous. The pseudo-first-order, pseudo-second-order, and intra-particle diffusion kinetic equations were applied to model the adsorption kinetic data. It was seen that the kinetics of the adsorption may be described using pseudo-second-order kinetic equations. Finally, the present work concluded that the marine diatom alga S. costatum is suitable as a natural material for the adsorption of CVD.
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Affiliation(s)
- Mohamed Ashour
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt
| | - Ahmed E. Alprol
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt
| | - Mohamed Khedawy
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt
| | - Khamael M. Abualnaja
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Makkah, Saudi Arabia
| | - Abdallah Tageldein Mansour
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Hofuf 31982, Al-Ahsa, Saudi Arabia
- Fish and Animal Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21531, Egypt
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Mohamed S, Abdel Samad F, Ashour M, Abdel-Wahab MS, Tawfik WZ, Soma VR, Mohamed T. Enhanced and tunable femtosecond nonlinear optical properties of pure and nickel-doped zinc oxide films. Appl Opt 2022; 61:7283-7291. [PMID: 36256024 DOI: 10.1364/ao.465390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/05/2022] [Indexed: 06/16/2023]
Abstract
The nonlinear optical properties of pure ZnO and Ni-doped ZnO thin films are explored using the Z-scan technique at different input laser intensities and an excitation wavelength of 750 nm by 100 fs laser pulses. The pure ZnO and Ni-doped ZnO thin films were prepared by radio frequency magnetron sputtering at room temperature. A scanning electron microscope equipped with energy-dispersive x-ray spectroscopy was used to measure the thickness and composition of the thin films, while a UV-visible spectrophotometer was used to measure the linear optical properties. The structure of the thin films was measured using x-ray diffraction. Saturable absorption (SA) was observed in the pure ZnO thin film, while Ni-doped ZnO illustrated a combination of SA and reverse SA (RSA). The nonlinear absorption coefficient (β) and nonlinear refractive index (n2) of both pure ZnO and Ni-doped ZnO thin films were found to be input laser intensity dependent. As the input laser intensity increased, the nonlinear absorption coefficient and the nonlinear refractive index of both samples increased. An enhancement of two times in the nonlinear refractive index was observed for the Ni-doped ZnO thin film compared to the pure ZnO thin film. The optical limiting behavior of pure ZnO and Ni-doped ZnO thin films was investigated, and the data demonstrated that Ni-doped ZnO thin film is a good candidate for optical limiter applications due to the presence of strong RSA.
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Ashour M, G. Faris H, Ahmed H, Mamdouh S, Thambiratnam K, Mohamed T. Using Femtosecond Laser Pulses to Explore the Nonlinear Optical Properties of Au NP Colloids That Were Synthesized by Laser Ablation. Nanomaterials (Basel) 2022; 12:2980. [PMID: 36080017 PMCID: PMC9458061 DOI: 10.3390/nano12172980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 08/22/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
In this study, we experimentally investigated the nonlinear optical properties of Au nanoparticles (Au NPs) that were prepared in pure distilled water using the laser ablation method. The Au NPs were prepared using a nanosecond Nd:YAG laser with an ablation time of 5 or 10 min at a constant laser energy of 100 mJ. The structure and the linear optical properties of the Au NPs were investigated using a transmission electron microscope (TEM) and UV-visible spectrophotometer analysis, respectively. The TEM measurements showed that the average size of the Au NPs varied from 20.3 to 14.1 nm, depending on the laser ablation time. The z-scan technique was used to investigate the nonlinear refractive index (n2) and nonlinear absorption coefficient (γ) of the Au NPs, which were irradiated at different excitation wavelengths that ranged from 740 to 820 nm and at different average powers that ranged from 0.8 to 1.6 W. The Au NP samples exhibited a reverse saturable absorption (RSA) behavior that increased when the excitation wavelength and/or incident laser power increased. In addition, the Au NPs acted as a self-defocusing material whenever the excitation wavelength or incident power were modified.
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Affiliation(s)
- Mohamed Ashour
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
- High Institute of Optics Technology HIOT, Sheraton Heliopolis, Cairo 11799, Egypt
| | - Hameed G. Faris
- Al Anbar Health Directorate, Training and Human Development Center, Ramadi 31001, Iraq
| | - Hanan Ahmed
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Samar Mamdouh
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
| | | | - Tarek Mohamed
- Laser Institute for Research and Applications LIRA, Beni-Suef University, Beni-Suef 62511, Egypt
- Department of Engineering, Faculty of Advanced Technology and Multidiscipline, Universitas Airlangga, Surabaya 60115, Indonesia
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Abd El Hamid M, Ashour M, Khater S. ROLE OF MULTIDETECTOR CT IN EARLY DETECTION AND MANAGEMENT OF POST-OPERATIVE COMPLICATIONS OF BARIATRIC SURGERIES. ALEXMED ePosters 2022; 4:10-11. [DOI: 10.21608/alexpo.2022.148792.1430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Mansour AT, Ashour M, Abbas EM, Alsaqufi AS, Kelany MS, El-Sawy MA, Sharawy ZZ. Growth Performance, Immune-Related and Antioxidant Genes Expression, and Gut Bacterial Abundance of Pacific White Leg Shrimp, Litopenaeus vannamei, Dietary Supplemented With Natural Astaxanthin. Front Physiol 2022; 13:874172. [PMID: 35812341 PMCID: PMC9259928 DOI: 10.3389/fphys.2022.874172] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 06/01/2022] [Indexed: 01/29/2023] Open
Abstract
The current study examines the effect of dietary supplementation of ethanolic extract of Arthrospira platensis NIOF17/003, which is mainly natural astaxanthins (97.50%), on the growth performance, feed utilization, bacterial abundance, and immune-related and antioxidant gene expressions of the Pacific white leg shrimp, Litopenaeus vannamei. A total of 360 healthy L. vannamei postlarvae (0.19 ± 0.003 g) were divided into four groups (0, 2, 4, and 6 g natural astaxanthins/kg diet) each in three replicates, at an initial density of 30 PLs per tank (40 L capacity). The shrimp were fed the tested diets three times a day at a rate of 10% of their total body weight for 90 days. Diets supplemented with different astaxanthin levels significantly improved shrimp growth performance and feed conversion ratio compared to the control diet. No significant differences were observed in survival rates among all experimental groups. The immune-related genes (prophenoloxidase, lysozyme, beta-glucan binding protein, transglutaminase, and crustin) mRNA levels were significantly upregulated in groups fed with different concentrations of the natural astaxanthins in a dose-dependent manner. The prophenoloxidase gene is the highest immune-upregulated gene (14.71-fold change) in response to astaxanthin supplementation. The superoxide dismutase mRNA level was significantly increased with increasing dietary astaxanthin supplementation. In addition, increasing astaxanthin supplementation levels significantly reduced the count of heterotrophic bacteria and Vibrio spp. in the culture water and shrimp intestine. Overall, the current results concluded that diet supplementation with natural astaxanthin, extracted from Arthrospira platensis, enhanced the growth performance, immune response, and antioxidant status of L. vannamei.
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Affiliation(s)
- Abdallah Tageldein Mansour
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, Al Hofuf, Saudi Arabia
- Fish and Animal Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria, Egypt
- *Correspondence: Abdallah Tageldein Mansour, , orcid.org/0000-0002-5963-5276; Mohamed Ashour, , orcid.org/0000-0002-1595-1197
| | - Mohamed Ashour
- National Institute of Oceanography and Fisheries (NIOF), Cairo, Egypt
- *Correspondence: Abdallah Tageldein Mansour, , orcid.org/0000-0002-5963-5276; Mohamed Ashour, , orcid.org/0000-0002-1595-1197
| | - Eman M. Abbas
- National Institute of Oceanography and Fisheries (NIOF), Cairo, Egypt
| | - Ahmed Saud Alsaqufi
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, Al Hofuf, Saudi Arabia
| | - Mahmoud S. Kelany
- National Institute of Oceanography and Fisheries (NIOF), Cairo, Egypt
| | | | - Zaki Z. Sharawy
- National Institute of Oceanography and Fisheries (NIOF), Cairo, Egypt
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Abd-El-Nabey BA, Ashour M, Aly AM, Mohamed ME. Fabrication of Robust Superhydrophobic Nickel Films on Steel Surface With High Corrosion Resistance, Mechanical and Chemical Stability. Journal of Engineering Materials and Technology 2022; 144. [DOI: 10.1115/1.4052768] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Abstract
Superhydrophobic films were successfully grafted on a steel substrate using potentiostatic electrodeposition of nickel followed by treatment with myristic acid (MA) as a low surface energy material. A scanning electron microscope (SEM) was used to investigate the surface topography of the prepared superhydrophobic films. The results revealed that the prepared Ni films modified by myristic acid have micro-nano structures. Fourier transform infrared spectrophotometer (FTIR) and X-ray diffraction (XRD) measurements showed that the steel substrate was coated with nickel film modified with myristic acid. Three different nickel films were prepared: the Ni-MA (I) deposited from pure nickel sulfate bath (1.0 M NiSO4), Ni-MA (II) deposited from pure nickel chloride bath (1.0 M NiCl2. 6H2O), and the third Ni-MA (III) film deposited from Watts bath (0.2 M NiCl2. 6H2O and 0.8M NiSO4). The superhydrophobic Ni-MA (I) film has the highest corrosion resistance, chemical stability, and mechanical abrasion resistance, while Ni-MA (II) film has the lowest properties.
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Affiliation(s)
- B. A. Abd-El-Nabey
- Department of Chemistry; Faculty of Science, Alexandria University, Alexandria 21500, Egypt
| | - M. Ashour
- Department of Chemistry; Faculty of Science, Egyptian Ethylene & Derivatives, Company (ETHYDCO), Alexandria 21500, Egypt
| | - A. M. Aly
- Department of Chemistry; Faculty of Science, Alexandria Mineral Oil Company (AMOC), Alexandria 21500, Egypt
| | - M. E. Mohamed
- Chemistry Department; Faculty of Science, Alexandria University, Alexandria 21500, Egypt
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Mansour AT, Alprol AE, Abualnaja KM, El-Beltagi HS, Ramadan KMA, Ashour M. Dried Brown Seaweed’s Phytoremediation Potential for Methylene Blue Dye Removal from Aquatic Environments. Polymers (Basel) 2022; 14:polym14071375. [PMID: 35406248 PMCID: PMC9003058 DOI: 10.3390/polym14071375] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 12/12/2022] Open
Abstract
The dried form of the brown seaweed Sargassum latifolium was tested for its ability to remove toxic Methylene Blue Dye (MBD) ions from aqueous synthetic solutions and industrial wastewater effluents. In a batch adsorption experiment, different initial concentrations of MBD (5, 10, 20, 30, and 40 mg L−1), sorbent dosages (0.025, 0.05, 0.1, 0.2, 0.3, 0.4, and 0.5 g L−1), contact time (5, 10, 15, 30, 60, 120 min), pH (3, 5, 8, 10, and 12), and temperature (30, 40, 50, 60 °C) were observed. Dried powder of S. latifolium was characterized before and after adsorption of MBD using different techniques, such as FTIR, SEM, UV visible spectral examination, and BET techniques. The BET surface area suggests the formation of S. latifolium was 111.65 m2 g−1, and the average pore size was 2.19 nm. The obtained results showed that at an MBD concentration of 40 mg L−1, the adsorption was rapid in the first 5, 10, and 15 min of contact time, and an equilibrium was reached in about 60 and 120 min for the adsorption. At the optimum temperature of 30 °C and the adsorbent dose of 0.1 g L−1, approximately 94.88% of MBD were removed. To find the best-fit isotherm model, the error function equations are applied to the isotherm model findings. Both Tempkin and Freundlich isotherm models could appropriate the equilibrium data, as well as the pseudo 2nd order kinetics model due to high correlation coefficients (R2). Thermodynamic and Freundlich model parameters were assessed and showed that the mechanism of the sorption process occurs by an endothermic and physical process. According to the results of the experiments, S. latifolium is a promising environmentally friendly approach for eliminating MBD from the aqueous solution that is also cost-effective. This technology could be useful in addressing the rising demand for adsorbents employed in environmental protection processes.
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Affiliation(s)
- Abdallah Tageldein Mansour
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Fish and Animal Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21531, Egypt
- Correspondence: (A.T.M.); (M.A.)
| | - Ahmed E. Alprol
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt;
| | - Khamael M. Abualnaja
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Hossam S. El-Beltagi
- Agricultural Biotechnology Department, College of Agriculture and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia;
- Biochemistry Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Khaled M. A. Ramadan
- Central Laboratories, Department of Chemistry, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia;
- Department of Biochemistry, Faculty of Agriculture, Ain Shams University, Cairo 11566, Egypt
| | - Mohamed Ashour
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt;
- Correspondence: (A.T.M.); (M.A.)
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Azribi F, Abdou E, Dawoud E, Ashour M, Kamal A, Al Sayed M, Burney I. Prevalence of BRCA1 and BRCA2 pathogenic sequence variants in ovarian cancer patients in the Gulf region: the PREDICT study. BMC Cancer 2021; 21:1350. [PMID: 34930165 PMCID: PMC8690897 DOI: 10.1186/s12885-021-09094-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 11/23/2021] [Indexed: 12/09/2022] Open
Abstract
BACKGROUND Patients with pathogenic sequence variants (PSVs) in BRCA1/BRCA2 are at high risk of developing ovarian cancer (OC). However, genetic testing for BRCA1/BRCA2 PSVs is still not a routine practice in the Middle East. With the lack of epidemiological studies in the region, we aim to describe the prevalence of BRCA1/BRCA2 PSVs in patients with OC across different countries in the Gulf region. METHODS The PREDICT study was an observational, prospective, epidemiological study, which consecutively recruited women with ovarian, primary peritoneal, and fallopian tube cancers from the following Gulf countries over the period from July 2017 to July 2019; United Arab Emirates (UAE), Kuwait, and Oman. The study was approved by the local ethics committee of participating centers. The BRCA1/BRCA2 PSVs were assessed by tissue genetic testing using next-generation sequencing (NGS). RESULTS A total of 105 women were included with a median age at diagnosis of 52 years (IQR 44.5 - 61.0). Nearly 11.4% of patients reported a family history of ovarian or breast cancer, while 4.7% of patients reported a family history of other cancers. Most of the patients (70.3%) had advanced disease (FIGO stage III/IV) at presentation. Eighty-eight patients (84%) were successfully tested for somatic BRCA1/BRCA2 PSVs. Fifteen patients (17%) were found to have PSVs in either BRCA1, BRCA2, or both genes; of them, 10 patients (11.2%) had BRCA1 somatic PSVs alone, eight patients (9.1%) had BRCA2 somatic PSVs, while three patients (2.9%) had both PSVs. Five patients with BRCA1/BRCA2 somatic PSVs had germline PSVs tests, and three of them tested positive. Concerning treatment, 87.6% of patients received perioperative chemotherapy and 6.6% as first-line palliative chemotherapy. Eighty-seven (82.9%) patients underwent debulking surgery, with no residual disease in 42.5% of patients. CONCLUSION Our study showed that the prevalence of BRCA1/BRCA2 somatic PSVs in patients with OC is higher than the reported global figures (2-8%). However, more studies are warranted to further elucidate the prevalence of BRCA1/BRCA2 somatic and germline PSVs, as well as other relevant genetic alterations, to better understand their impact on OC patient outcomes in Gulf countries. TRIAL REGISTRATION NCT03082976 .
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Affiliation(s)
| | - Ehab Abdou
- Kuwait Cancer Control Center, Kuwait City, Kuwait
| | - Emad Dawoud
- Tawam Hospital, Al Ain, United Arab Emirates
| | | | - Amgad Kamal
- Medical Affairs Department, AstraZeneca, Dubai, United Arab Emirates
| | - Mohamed Al Sayed
- Medical Affairs Department, AstraZeneca, Dubai, United Arab Emirates
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Ashour M, Alprol AE, Heneash AMM, Saleh H, Abualnaja KM, Alhashmialameer D, Mansour AT. Ammonia Bioremediation from Aquaculture Wastewater Effluents Using Arthrospira platensis NIOF17/003: Impact of Biodiesel Residue and Potential of Ammonia-Loaded Biomass as Rotifer Feed. Materials (Basel) 2021; 14:5460. [PMID: 34576683 PMCID: PMC8472451 DOI: 10.3390/ma14185460] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 11/17/2022]
Abstract
The present work evaluated the capability of Arthrospira platensis complete biomass (ACDW) and the lipid-free biomass (LFB) to remove ammonium ions (NH4+) from aquaculture wastewater discharge. Under controlled conditions in flasks filled with 100 mL of distilled water (synthetic aqueous solution), a batch process ion-exchange was conducted by changing the main parameters including contact times (15, 30, 45, 60, 120, and 180 min), initial ammonium ion concentrations (10, 20, 30, 40, 50, and 100 mg·L-1), and initial pH levels (2, 4, 6, 8, and 10) at various dosages of ACDW and LFB as adsorbents (0.02, 0.04, 0.06, 0.08, and 0.1 g). After lab optimization, ammonia removal from real aquaculture wastewater was also examined. The removal of ammonium using ACDW and LFB in the synthetic aqueous solution (64.24% and 89.68%, respectively) was higher than that of the real aquaculture effluents (25.70% and 37.80%, respectively). The data of IR and Raman spectroscopy confirmed the existence of various functional groups in the biomass of ACDW and LFB. The adsorption equilibrium isotherms were estimated using Freundlich, Langmuir, and Halsey models, providing an initial description of the ammonia elimination capacity of A. platensis. The experimental kinetic study was suitably fit by a pseudo-second-order equation. On the other hand, as a result of the treatment of real aquaculture wastewater (RAW) using LFB and ACDW, the bacterial counts of the LFB, ACDW, ACDW-RAW, and RAW groups were high (higher than 300 CFU), while the LFB-RAW group showed lower than 100 CFU. The current study is the first work reporting the potential of ammonia-loaded microalgae biomass as a feed source for the rotifer (Brachionus plicatilis). In general, our findings concluded that B. plicatilis was sensitive to A. platensis biomass loaded with ammonia concentrations. Overall, the results in this work showed that the biomass of A. platensis is a promising candidate for removing ammonia from aquaculture wastewater.
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Affiliation(s)
- Mohamed Ashour
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt; (A.E.A.); (A.M.M.H.); (H.S.)
| | - Ahmed E. Alprol
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt; (A.E.A.); (A.M.M.H.); (H.S.)
| | - Ahmed M. M. Heneash
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt; (A.E.A.); (A.M.M.H.); (H.S.)
| | - Hosam Saleh
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt; (A.E.A.); (A.M.M.H.); (H.S.)
| | - Khamael M. Abualnaja
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia; (K.M.A.); (D.A.)
| | - Dalal Alhashmialameer
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia; (K.M.A.); (D.A.)
| | - Abdallah Tageldein Mansour
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Fish and Animal Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21531, Egypt
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El ghazeery M, Elsawaf M, Ashour M, Metwaly M, Hashish M. One-year outcome of laparoscopic sleeve gastrectomy in morbidly obese adolescents. Ann Pediatr Surg 2021. [DOI: 10.1186/s43159-021-00098-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Adolescent obesity is an important health issue. Non-surgical weight management programs, even the most aggressive, have shown modest weight reduction results. Laparoscopic sleeve gastrectomy (LSG) is gaining reliability as a low surgical risk bariatric procedure with proper efficiency for this age group. The aim of this study was to present our initial experience with LSG in morbidly obese adolescents and to report short-term clinical and metabolic outcome.
Results
Mean age was 16.43 years, and mean preoperative weight and body mass index (BMI) were 132.68 kg and 48.90 respectively. Mean excess weight loss (EWL) was 54.11 kg 1 year after LSG, corresponding to 74 EWL% as well as mean BMI loss (BML) of 19.89. LSG improved fatty infiltration of the liver in 75% of cases and other comorbidities in 100% of patients.
Conclusions
LSG proved to be a safe procedure with significant short-term clinical and metabolic success for adolescent obesity.
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Ashour M, Hassan SM, Elshobary ME, Ammar GAG, Gaber A, Alsanie WF, Mansour AT, El-Shenody R. Impact of Commercial Seaweed Liquid Extract (TAM ®) Biostimulant and Its Bioactive Molecules on Growth and Antioxidant Activities of Hot Pepper ( Capsicum annuum). Plants (Basel) 2021; 10:plants10061045. [PMID: 34064289 PMCID: PMC8224274 DOI: 10.3390/plants10061045] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/12/2021] [Accepted: 05/19/2021] [Indexed: 02/05/2023]
Abstract
Bioactive molecules derived from seaweed extracts are revolutionary bio-stimulants used to enhance plant growth and increase yield production. This study evaluated the effectiveness of a commercially available seaweed liquid extract, namely, True-Algae-Max (TAM®), as a plant growth stimulant on nutritional, and antioxidant activity of Capsicum annuum. Three concentrations of TAM® (0.25, 0.5, and 1%) of various NPK: TAM® ratios were investigated via foliar spray, over 2017 and 2018 cultivation seasons, under greenhouse conditions. TAM® is rich in phytochemical compounds, such as ascorbic acid (1.66 mg g-1), phenolics (101.67 mg g-1), and flavonoids (2.60 mg g-1) that showed good antioxidant activity (54.52 mg g-1) and DPPH inhibition of 70.33%. Promoting measured parameter results stated the extensive potentiality of TAM® application, in comparison with conventional NPK treatment. Yield and composition of C. annuum were significantly improved in all TAM® treated groups, especially the TAM0.5% concentration, which resulted in maximum yield (4.23 Kg m-2) and significant amounts of profuse biological molecules like chlorophyll, ascorbic, phenolic compounds, flavonoids, and total nutrients. Compared to the NPK control treatments, C. annuum treated with TAM0.5% improved the total antioxidant activity of hot Pepper from 162.16 to 190.95 mg g-1. These findings indicate that the extract of seaweed can be used as an environmentally friendly, multi-functional biostimulant in the agricultural field for more sustainable production, in addition to reducing the use of hazardous synthetic fertilizers.
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Affiliation(s)
- Mohamed Ashour
- National Institute of Oceanography and Fisheries, NIOF, Cairo 11516, Egypt
- Correspondence: (M.A.); (M.E.E.)
| | - Shimaa M. Hassan
- Department of Vegetable Crops, Faculty of Agriculture (El-Shatby), Alexandria University, Alexandria 21545, Egypt;
| | - Mostafa E. Elshobary
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt;
- Correspondence: (M.A.); (M.E.E.)
| | - Gamal A. G. Ammar
- Biotechnology Unit, Plant Production Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications, Alexandria 21934, Egypt;
| | - Ahmed Gaber
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Walaa F. Alsanie
- Department of Clinical Laboratories Sciences, The Faculty of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Abdallah Tageldein Mansour
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia;
- Fish and Animal Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21531, Egypt
| | - Rania El-Shenody
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt;
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Abualnaja KM, Alprol AE, Abu-Saied MA, Mansour AT, Ashour M. Studying the Adsorptive Behavior of Poly(Acrylonitrile- co-Styrene) and Carbon Nanotubes (Nanocomposites) Impregnated with Adsorbent Materials towards Methyl Orange Dye. Nanomaterials (Basel) 2021; 11:1144. [PMID: 33924975 PMCID: PMC8146385 DOI: 10.3390/nano11051144] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/17/2021] [Accepted: 04/26/2021] [Indexed: 02/03/2023]
Abstract
In this study, a polymeric (acrylonitrile-co-styrene) P(AN-co-St) composite was impregnated with adsorbents, such as sulfonated and multiwall carbon nanotubes (MWCNTs), to increase the adsorptive characteristics of the nanocomposite upon the removal of methyl orange (MO) dye under different conditions. A novel nanocomposite copolymer mixture of P(AN-co-St) and SP(AN-co-St) was used. MWCNTs were prepared by a low-cost chemical vapor deposition (CVD) process. Variation in MO adsorption onto the three nanocomposites was examined in an aqueous solution via the batch technique with respect to contact time, initial MO concentration, adsorbent dosage, pH, and temperature. The surface of the nanocomposites was characterized by a scanning electron microscope (SEM), particle size distribution (PSD), Fourier transform infrared (FTIR), and Raman analysis. The experimental data showed that the efficiency of P(AN-co-St)/ MWCNT removal increased under the conditions of an acidic pH (3 and 5) with an agitation speed of 140 rpm, a sorbent weight of 0.01 g, and 20 mg of initial dye. The maximum sorption capacities were 121.95, 48.78, and 47.84 mg g-1 for the P(AN-co-St)/ MWCNTs, SP(AN-co-St), and P(AN-co-St) composites, respectively, as assessed by the Langmuir model. Additional isotherm models, such as the Freundlich, Temkin, and Halsey models, were used to examine the experimental data. A pseudo-second-order model was found to be more fitting for describing the sorption.
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Affiliation(s)
- Khamael M. Abualnaja
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Ahmed E. Alprol
- National Institute of Oceanography and Fisheries, NIOF, Cairo 11516, Egypt;
| | - M. A. Abu-Saied
- Polymeric Materials Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-CITY), New Borg El-Arab City 21934, Egypt;
| | - Abdallah Tageldein Mansour
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Fish and Animal Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21531, Egypt
| | - Mohamed Ashour
- National Institute of Oceanography and Fisheries, NIOF, Cairo 11516, Egypt;
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Magouz FI, Essa MA, Matter M, Tageldein Mansour A, Alkafafy M, Ashour M. Population Dynamics, Fecundity and Fatty Acid Composition of Oithona nana (Cyclopoida, Copepoda), Fed on Different Diets. Animals (Basel) 2021; 11:ani11051188. [PMID: 33919197 PMCID: PMC8143082 DOI: 10.3390/ani11051188] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/12/2021] [Accepted: 04/19/2021] [Indexed: 11/29/2022] Open
Abstract
Simple Summary Marine larval production is the most critical stage in the life of the marine aquacultured species, which depends on the use of different zooplanktonic organisms as live feed. Copepods are high-quality live prey that could be efficiently used to overcome the transition period from live food to weaning with an artificial diet in the post-larval stages. The main culture systems of copepods use microalgae as uni-food, nevertheless for the more sustainable and cost-efficient production of copepods, the development of artificial diets is the core of its production techniques. The present study was conducted to improve the production and nutritional quality of copepod, Oithona nana, using different diets (soybean, yeast, rice bran, and corn starch). Among all diets, corn starch revealed the highest population growth. Meanwhile, animals nourished by rice bran showed the highest percent of copepodite, nauplii, and fecundity. The nutritional quality of copepods referred to fatty acids profile showed a high percentage of unsaturated fatty acids in copepods fed on rice bran. In conclusion, the dry feeds are very applicable, more economic, and simply alternative diets to substitute microalgae and maximize the fecundity and population of O. nana in fish hatcheries. Abstract The marine copepod species Oithona nana is considered as one of the most successfully mass cultured Cyclopoida species in marine hatcheries. This study investigated the effects of four feed diets (soybean, yeast, rice bran, and corn starch) on the population growth, growth rate, population composition, fecundity, and fatty acid composition of native isolated Cyclopoida copepod species O. nana. The experiment was continued for 15 days and the copepods were fed on one of the four diets with a concentration of 1 g 10−6 individual day−1. The results revealed that corn starch was found to be the most supportive diet for population growth and population growth rate. For nutritional value, copepods fed on rice bran were detected to have the highest content of MUFA, PUFA, and the lowest SFA and SFA/UFA ratio; more importantly, the rice bran diet was the only treatment that showed C20:5ω3. Moreover, copepods fed on rice bran showed the highest significant female fecundity, copepodite, and nauplii percent. Finally, the protocols described in the current study concluded that the dry feeds, especially corn starch, are very useful and applicable in hatcheries for maximizing the fecundity and density of Cyclopoida copepod species, O. nana.
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Affiliation(s)
- Fawzy I. Magouz
- Department of Animal Production, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh 33516, Egypt;
| | - Mohamed A. Essa
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt; (M.A.E.); (M.M.)
| | - Mustafa Matter
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt; (M.A.E.); (M.M.)
| | - Abdallah Tageldein Mansour
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Fish and Animal Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21531, Egypt
- Correspondence: (A.T.M.); (M.A.)
| | - Mohamed Alkafafy
- Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Mohamed Ashour
- National Institute of Oceanography and Fisheries (NIOF), Cairo 11516, Egypt; (M.A.E.); (M.M.)
- Correspondence: (A.T.M.); (M.A.)
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Affiliation(s)
- Enoch Wong
- Department of Surgery, Eastern Health, Melbourne, Victoria, Australia
| | - Mohamed Ashour
- Department of Surgery, Eastern Health, Melbourne, Victoria, Australia
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Azribi F, Abdou E, Dawoud E, Ashour M, Kamal A, Alsayed M, Burney I. 143P Prevalence of BRCA1/2 mutations in patients with ovarian cancer in the Gulf region: The PREDICT study. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Akl A, EISSA A, Ashour M, Essa S, Albluwi S. SUN-448 BYWATERS' SYNDROME A RARE COMPLICATION OF EPILEPTIC SEIZURE: CASE REPORT. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Ashour M, Ezzat Shafik H. Frequency of germline mutations in BRCA1 and BRCA2 in ovarian cancer patients and their effect on treatment outcome. Cancer Manag Res 2019; 11:6275-6284. [PMID: 31372034 PMCID: PMC6626894 DOI: 10.2147/cmar.s206817] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 05/17/2019] [Indexed: 12/14/2022] Open
Abstract
Aim of work Reporting the incidence and the variants of BRCA1/2 mutations in ovarian cancer patients exploring their effects on the treatment outcomes. Patients and methods In total, 104 patients with epithelial ovarian cancer were prospectively recruited to the study. Analysis consisted of the sequencing of all the translated exons and immediately adjacent intronic regions of the BRCA1/2 genes. Responses to multiple lines of chemotherapy were assessed, as well as the effect of BRCA gene mutations on progression-free survival (PFS) and overall survival (OS). Results Pathogenic BRCA1/2 mutations were found in 21.15% of the patients. BRCA1 mutations represented 68.2% of the total mutations. Two novel BRCA1 mutations were identified. Age at diagnosis was a strong predictor of the presence of a pathogenic BRCA1/2 mutation. Patients with a family history of cancer had a higher incidence of BRCA mutations (P=0.005). As high as 72% of the patients with BRCA mutations were diagnosed at advanced stage. High-grade serous tumors have a higher incidence of pathogenic mutation (P=0.07). Response to neoadjuvant chemotherapy was high (93.9%). All patients underwent surgery which was optimal in 73.1% of the patients. As high as 85.6% of the patients received adjuvant chemotherapy. Relapse rate was 45.2%. Visceral metastasis was more often in BRCA carriers (P=0.01). Patients carrying pathogenic BRCA1/2 mutations had a longer median PFS of 42.43 months (95% CI 32.04–52.83) compared to 22.24 months (95% CI 14.83–29.58) for non-carriers (P=0.08). OS was 64.32 months (95% CI 38.09–90.06) for BRCA mutation patients versus 56.63 months (95% CI 50.05–63.21) (P=0.04) for non-carriers. In multivariate analysis, early stage at diagnosis and optimal debulking were the only independent predictors of better PFS and OS. Conclusion We documented a number of pathogenic BRCA1 and 2 mutations in this patients cohort; two novel mutations were detected. BRCA status seemed to affect survival in ovarian cancer patients.
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Affiliation(s)
- Mohamed Ashour
- Clinical Oncology, Faculty of Medicine, Al Azhar University, Kuwait, Egypt.,Department of Medical Oncology, Kuwait Cancer Control Centre, Farwanyia, Ragai, Kuwait, Egypt
| | - Hanan Ezzat Shafik
- Medical Oncology Department, National Cancer Institute, Cairo University, Giza, Cairo, Egypt
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Abdel-Salam IM, Abou-Bakr AA, Ashour M. Cytotoxic effect of aqueous ethanolic extract of Luffa cylindrica leaves on cancer stem cells CD44 +/24 - in breast cancer patients with various molecular sub-types using tissue samples in vitro. J Ethnopharmacol 2019; 238:111877. [PMID: 30995545 DOI: 10.1016/j.jep.2019.111877] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 04/06/2019] [Accepted: 04/10/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Luffa cylindrica (L.) M.Roem is a climbing plant its parts have been used as traditional medicine for the treatment of different types of diseases including diarrhea, inflammation, cancer and viral infections. The parts used include fruit, seeds and leaves. AIM OF THE STUDY Our study aims to investigate the effect of the aqueous-ethanol extract of Luffa cylindrica leaves on breast cancer stem cells CD44+/24- and other cell sub-populations using clinical samples with different molecular sub-types of breast cancer in vitro. MATERIALS AND METHODS Breast tissues were obtained from patients undergoing surgery for the removal of breast tumors after complete clinical and pathological investigations. Tissue samples were processed to cell suspensions and treated with the extract in the tissue culture laboratory. Percentages of cell sub-populations within tumors and viability were measured by flowcytometry using clusters of differentiation as cell markers. RESULTS Our results revealed that there were decreases in the total cell viability, CD44+/24- and total CD24+ cell sub-populations percentages after treatment with the extract, this may be an important indication of using Luffa leaves extract in the treatment of breast cancer or in combination with the traditional treatments. CONCLUSION Luffa cylindrica has proven to have anticancer activity on three different subtypes of breast cancer including luminal A, luminal B and Her2/neu enriched more over it has cytotoxic effect on both bulk tumor cells as well as cancer stem cells sub population CD44+/24- which possess high tumorigenic potency, these results were confirmed by measuring their viable number after treatment and sphere formation assay results.
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Affiliation(s)
| | - A A Abou-Bakr
- Pathology Department, National Cancer Institute, Cairo University, Egypt
| | - Mohamed Ashour
- Medical Research Department, National Institute of Occupational Safety and Health, Egypt.
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Abdel-Salam IM, Awadein NES, Ashour M. Cytotoxicity of Luffa cylindrica (L.) M.Roem. extract against circulating cancer stem cells in hepatocellular carcinoma. J Ethnopharmacol 2019; 229:89-96. [PMID: 30287196 DOI: 10.1016/j.jep.2018.09.034] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 09/22/2018] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Luffa cylindrica (L.) M.Roem. has been recognized as traditional medicine for the treatment of various diseases like inflammatory diseases, diarrhea and viral infections. The usual parts used include fruit, seeds and leaves. AIM OF THE STUDY To evaluate the anticancer activity of the hot water extract of the whole plant of Luffa cylindrica using circulating tumor cells and cancer stem cells isolated from the peripheral blood of hepatocellular carcinoma patients in vitro. MATERIALS AND METHODS Seventy five adult patients who reported as stage II and III Hepatocellular carcinoma were selected. Blood samples were withdrawn and the circulating tumor cells were isolated from the whole blood. Tumor cells and cancer stem cells were detected and isolated by flow cytometric techniques. The isolated cell types were cultured and propagated in the tissue culture facility, the extract was tested on the isolated cells. RESULTS Luffa cylindrica hot water extract has shown cytotoxic activity against circulating tumor cells of hepatocellular carcinoma especially the cells sub-population CD133+/CD44+ with little effect among CD133+/CD44- sub-population. CONCLUSION Hot water extract of Luffa cylindrica whole plant could decrease the ratio of cancer stem cells in blood of HCC patients and may be used to minimize recurrence and metastasis in hepatocellular carcinoma patients.
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Affiliation(s)
| | | | - Mohamed Ashour
- Medical Research Department, National Institute of Occupational Safety and Health, Egypt, 156 - EL Hegas Street, Cairo, Egypt.
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El-Shenody RA, Ashour M, Ghobara MME. Evaluating the chemical composition and antioxidant activity of three Egyptian seaweeds: Dictyota dichotoma, Turbinaria decurrens, and Laurencia obtusa. Braz J Food Technol 2019. [DOI: 10.1590/1981-6723.20318] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract Seaweeds have a growing number of successful applications in the food industry, medicine and in the cosmetic industry, which increases the importance of evaluating their chemical composition. In the present study, three common Egyptian seaweeds (Dictyota dichotoma, Turbinaria decurrens and Laurencia obtusa) were collected from the Red Sea coast, Suez, Egypt. The chemical profile of the three seaweeds was studied beside the antioxidant activity of their extracts. The results indicated that the amount of carbohydrate was greater than the protein and lipid contents in the three seaweeds, with a natural richness in minerals and antioxidants besides considerable amounts of monounsaturated and polyunsaturated fatty acids, including Omega-3 and Omega-6 fatty acids. All essential amino acids for human were found in the three seaweeds, with significant amounts of aspartic and glutamic acids. Furthermore, the results of the antioxidant activity assays were consistent with the antioxidant contents (phenols, flavonoids, alkaloids, vitamin C, carotenoids) of each seaweed. D. dichotoma was the most valuable seaweed of the three species studied, due to its relatively high protein content of 7.28 ± 0.25%, moderate carbohydrate content of 25.35 ± 0.32%, and highest pigment and antioxidant contents. In conclusion, these three seaweeds, especially Dictyota dichotoma, have an interesting chemical composition with a prospective nutritional and pharmaceutical value.
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Ashour M, Elshobary ME, El-Shenody R, Kamil AW, Abomohra AEF. Evaluation of a native oleaginous marine microalga Nannochloropsis oceanica for dual use in biodiesel production and aquaculture feed. Biomass and Bioenergy 2019. [DOI: 10.1016/j.biombioe.2018.12.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Mohieldin A, Rasmy A, Ashour M, Al-Nassar M, Ali RH, El-Enezi FG. Efficacy and safety of crizotinib in patients with anaplastic lymphoma kinase-positive advanced-stage non-small-cell lung cancer. Cancer Manag Res 2018; 10:6555-6561. [PMID: 30555260 PMCID: PMC6278708 DOI: 10.2147/cmar.s173084] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Introduction Lung cancer is the leading cause of cancer mortality worldwide, despite advances in management, especially with targeted agents and immunotherapy. Numerous oncogenes have been identified that control the growth of these malignancies. Anaplastic lymphoma kinase (ALK) is a tyrosine kinase that develops distorted functioning as a result of chromosomal rearrangement. Crizotinib, a tyrosine kinase inhibitor (TKI), was approved by the Food and Drug Administration (FDA) in 2011 for the treatment of advanced ALK-positive non-small-cell lung cancer (NSCLC). Patients and methods In this chart review, we compiled data from two cancer hospitals in Kuwait and Saudi Arabia which were collected from patients with advanced NSCLC treated between January 2013 and September 2017 with crizotinib after diagnosed with ALK-positive disease. Crizotinib 250 mg BID was given orally with/without food intake. We assessed overall survival (OS), objective response rate (ORR), progression-free survival (PFS), duration of the response, and dose reduction/cessation. Results De-identified data from 38 subjects were compiled. Their median age was 53 years, 65.8% were male, the 1-year OS was 88%, and the PFS was 16.5 months. Two cases (5.3%) had a complete response (CR), while 17 (44.7%) had a partial response (PR). Side effects of grade III/IV occurred, including elevated transaminase levels, diarrhea, and prolonged QT intervals, in 8% patients, with dose reduction in six patients (15.8%). Conclusion In NSCLC, crizotinib is a viable treatment option with good response and tolerable toxicity for patients with ALK-positive advanced disease.
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Affiliation(s)
- Ahmed Mohieldin
- Medical Oncology, Zagazig University Hospitals, Zagazig, Egypt, .,Medical Oncology Department, Sheikha Badriya Alsabah Centre, Kuwait Cancer Control Center, Shuwaikh, Kuwait
| | - Ayman Rasmy
- Medical Oncology, Zagazig University Hospitals, Zagazig, Egypt, .,Medical Oncology Department, King Saud Medical City, Riyadh, Saudi Arabia, .,Medical Oncology Department, King Fahad Specialist Hospital, Dammam, Saudi Arabia,
| | - Mohamed Ashour
- Medical Oncology Department, Sheikha Badriya Alsabah Centre, Kuwait Cancer Control Center, Shuwaikh, Kuwait.,Clinical Oncology, Al-Azhar University, Cairo, Egypt
| | - Muath Al-Nassar
- Thoracic Oncology - Sheikha Badriya Alsabah Centre, Kuwait Cancer Control Center, Shuwaikh, Kuwait
| | - Rola H Ali
- Department of Pathology, Faculty of Medicine, Kuwait University, Safat, Kuwait.,Molecular Laboratory, Kuwait Cancer Control Center, Shuwaikh, Kuwait
| | - Fahad G El-Enezi
- Thoracic Oncology - Sheikha Badriya Alsabah Centre, Kuwait Cancer Control Center, Shuwaikh, Kuwait
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Abdel-Salam IM, Ashmawy AM, Hilal AM, Eldahshan OA, Ashour M. Chemical Composition of Aqueous Ethanol Extract of Luffa cylindrica Leaves and Its Effect on Representation of Caspase-8, Caspase-3, and the Proliferation Marker Ki67 in Intrinsic Molecular Subtypes of Breast Cancer in Vitro. Chem Biodivers 2018; 15:e1800045. [PMID: 29874411 DOI: 10.1002/cbdv.201800045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Accepted: 06/05/2018] [Indexed: 01/26/2023]
Abstract
Breast cancer constitutes the second most prevalent cancer in Egypt, the problem needs more trends in treatment and treatment development either by regimen modification or introducing new drugs, and the main objective of this study is to screen the effects of the aqueous ethanol herbal extract of Luffa cylindrica leaves on different types of breast cancer cell lines representing different molecular subtypes of the disease. The major active constituents of the extract were tentatively identified by LC/MS which revealed the presence of phenolic compound derivatives and saponin that may be responsible in part for the activity of the extract. The emphasis was laid on the main apoptotic pathways as well as the extract effect on the normal cell line. Results of phytochemical investigation, cell cycle analysis, and molecular analysis of apoptotic and proliferative markers have shown effective anticancer activity against MCF-7, BT-474, and MDA-MB-231 cell lines which represent three subtypes of breast cancer, luminal A, luminal B, and triple negative, respectively. On the other hand, the effects on normal lung fibroblast cell line are less prominent at the dose used for treating breast cancer cell lines.
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Affiliation(s)
- Ibrahim M Abdel-Salam
- Department of Cancer Biology National Cancer Institute, Cairo University, Kasr Al Eini Street, Fom El Khalig, 11796-, Cairo, Egypt
| | - Abeer M Ashmawy
- Department of Cancer Biology National Cancer Institute, Cairo University, Kasr Al Eini Street, Fom El Khalig, 11796-, Cairo, Egypt
| | - Amany M Hilal
- Department of Medical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Omayma A Eldahshan
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbaseyya, 1156-, Cairo, Egypt
| | - Mohamed Ashour
- Medical Research Department, National Institute of Occupational Safety and Health, 156 - EL Hegas Street, Cairo-, 11351, Egypt
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Nurgat ZA, Lawrence M, Elhassan TA, Al Nahedh M, Ashour M, Alaboura D, Al-Jazairi AS, Al-jedai A. Comparison of closed system transfer devices for turnaround time and ease of use. J Oncol Pharm Pract 2018; 25:1142-1151. [DOI: 10.1177/1078155218781900] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Zubeir A Nurgat
- King Faisal Specialist Hospital & Research Centre, Pharmaceutical Care Division, Riyadh, Saudi Arabia
| | - Myer Lawrence
- King Faisal Specialist Hospital & Research Centre, Nursing Development and Saudisation, Riyadh, Saudi Arabia
| | - Tusneem A Elhassan
- King Faisal Specialist Hospital & Research Centre. Research Data Analyst, Oncology Centre, Riyadh, Saudi Arabia
| | - Mohammad Al Nahedh
- King Faisal Specialist Hospital & Research Centre, Pharmaceutical Care Division, Riyadh, Saudi Arabia
| | - Mohamed Ashour
- King Faisal Specialist Hospital & Research Centre, Pharmaceutical Care Division, Riyadh, Saudi Arabia
| | - Dina Alaboura
- King Faisal Specialist Hospital & Research Centre, Pharmaceutical Care Division, Riyadh, Saudi Arabia
| | - Abdulrazaq S Al-Jazairi
- King Faisal Specialist Hospital & Research Centre, Pharmaceutical Care Division, Riyadh, Saudi Arabia
| | - Ahmed Al-jedai
- King Faisal Specialist Hospital & Research Centre, Pharmaceutical Care Division, Riyadh, Saudi Arabia
- Alfaisal University, College of Medicine, College of Pharmacy, Riyadh, Saudi Arabia
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Khalil N, Ashour M, Fikry S, Singab AN, Salama O. Chemical composition and antimicrobial activity of the essential oils of selected Apiaceous fruits. Future Journal of Pharmaceutical Sciences 2018. [DOI: 10.1016/j.fjps.2017.10.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Ashour M, Shouman T, Hassouna A, Emad El Din R, Mokhtar M, Youssef A, Abd algeleel S. PV-0429: Swallowing sparing IMRT vs parotid sparing IMRT in head and neck cancer: phase III randomized trial. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)30739-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Esmat M, Ashour M. A comparison between primary debulking surgery and primary chemotherapy in patients with advanced ovarian cancer: a retrospective study. Al-Azhar Assiut Med J 2018. [DOI: 10.4103/azmj.azmj_7_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Esmat G, Elbaz T, El Raziky M, Gomaa A, Abouelkhair M, Gamal El Deen H, Sabry A, Ashour M, Allam N, Abdel-Hamid M, Nada O, Helmy S, Abdel-Maguid H, Colonno R, Brown N, Ruby E, Vig P, Waked I. Effectiveness of ravidasvir plus sofosbuvir in interferon-naïve and treated patients with chronic hepatitis C genotype-4. J Hepatol 2017; 68:S0168-8278(17)32286-9. [PMID: 28935432 DOI: 10.1016/j.jhep.2017.09.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 08/20/2017] [Accepted: 09/04/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Although treatment of hepatitis C virus (HCV) and HCV-genotype-4 (GT4) has become very effective, it remains very expensive, and affordable options are needed, especially in limited resource countries. The aim of this study was to assess the efficacy and safety of the combination of ravidasvir (an NS5A inhibitor) and sofosbuvir to treat patients with chronic HCV-GT4 infection. METHODS A total of 300 patients with HCV-GT4 infection were recruited in three groups: treatment-naïve patients with or without compensated Child-A cirrhosis (Group 1); interferon-experienced patients without cirrhosis (Group 2); and interferon-experienced patients with cirrhosis (Group 3). Groups 1 and 2 received ravidasvir 200 mg QD plus sofosbuvir 400 mg QD for 12 weeks and were randomized 1:1 to treatment with or without weight-based ribavirin. Group 3 patients received ravidasvir plus sofosbuvir with ribavirin and were randomized 1:1 to a treatment duration of 12 weeks or 16 weeks. The primary endpoint was sustained virologic response at 12 weeks post-treatment (SVR12). RESULTS A total of 298 patients were enrolled: 149 in Group 1, 79 in Group 2 and 70 in Group 3. SVR12 was achieved in 95.3% of all patients who started the study, including 98% of patients without cirrhosis and 91% of patients with cirrhosis, whether treatment-naïve or interferon-experienced. Ribavirin intake and history of previous interferon therapy did not affect SVR12 rates. No virologic breakthroughs were observed and the study treatment was well tolerated. CONCLUSIONS Treatment with ravidasvir plus sofosbuvir, with or without ribavirin, was well tolerated and associated with high sustained virologic response rate for HCV-GT4 infected patients with and without cirrhosis, regardless of previous interferon-based treatments. TRIAL REGISTRATION NUMBER ClinicalTrials.gov Identifier: NCT02371408. LAY SUMMARY This study evaluated efficacy and safety of the new oral hepatitis C drug ravidasvir in combination with the approved oral drug sofosbuvir in 298 patients infected with hepatitis C type 4. Our results showed that treatment with ravidasvir plus sofosbuvir, with or without ribavirin, was well tolerated and associated with high response rate in patients with and without cirrhosis.
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Affiliation(s)
- Gamal Esmat
- Endemic Medicine Department, Faculty of Medicine, Cairo University, Egypt
| | - Tamer Elbaz
- Endemic Medicine Department, Faculty of Medicine, Cairo University, Egypt.
| | - Maissa El Raziky
- Endemic Medicine Department, Faculty of Medicine, Cairo University, Egypt; Cairo Fatemic Hospital, Ministry of Health, Egypt
| | - Asmaa Gomaa
- National Liver Institute, Menoufiya University, Shebeen EL Kom, Egypt
| | - Mahmoud Abouelkhair
- Endemic Medicine Department, Faculty of Medicine, Cairo University, Egypt; Cairo Fatemic Hospital, Ministry of Health, Egypt
| | | | - Aliaa Sabry
- National Liver Institute, Menoufiya University, Shebeen EL Kom, Egypt
| | - Mohamed Ashour
- Endemic Medicine Department, Faculty of Medicine, Cairo University, Egypt; Cairo Fatemic Hospital, Ministry of Health, Egypt
| | - Naglaa Allam
- National Liver Institute, Menoufiya University, Shebeen EL Kom, Egypt
| | - Mohamed Abdel-Hamid
- Department of Microbiology, Faculty of Medicine, Minia University, El Minia, Egypt
| | - Ola Nada
- Pathology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | | | | | - Richard Colonno
- Presidio Pharmaceuticals, Inc., San Francisco, California, USA
| | - Nathaniel Brown
- Presidio Pharmaceuticals, Inc., San Francisco, California, USA
| | - Eric Ruby
- Presidio Pharmaceuticals, Inc., San Francisco, California, USA
| | - Pamela Vig
- Presidio Pharmaceuticals, Inc., San Francisco, California, USA
| | - Imam Waked
- National Liver Institute, Menoufiya University, Shebeen EL Kom, Egypt.
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Tan EW, Ashour M. When the gallbladder is not right. ANZ J Surg 2017; 88:E101-E102. [PMID: 28786200 DOI: 10.1111/ans.14134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 06/04/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Elizabeth W Tan
- Department of General Surgery, Box Hill Hospital, Eastern Health, Melbourne, Victoria, Australia
| | - Mohamed Ashour
- Department of General Surgery, Box Hill Hospital, Eastern Health, Melbourne, Victoria, Australia
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Ayoub N, Abdel-Naim A, Ashour M, Mostafa N. Hepatoprotective activity of aerial parts of Erythrina crista-galli. Archives of Pharmaceutical Sciences Ain Shams University 2017. [DOI: 10.21608/aps.2017.10357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Nurgat ZA, Alzahrani H, Lawrence M, Mannan A, Ashour M, Rasheed W, Aljurf M. Intracranial hypertension secondary to high dose cytosine arabinoside - A case study. J Infect Chemother 2016; 23:319-322. [PMID: 28011351 DOI: 10.1016/j.jiac.2016.11.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 11/14/2016] [Accepted: 11/23/2016] [Indexed: 10/20/2022]
Abstract
We report a rare case of intracranial hypertension following high dose cytosine arabinoside (HiDAC) in a 20-year-old man, with precursor B-cell acute lymphoblastic leukemia (ALL). A five drug induction protocol for ALL was initiated; post induction consolidation was with HiDAC (3 g/m2 IV every 12 h on days 1, 3 and 5). Post consolidation, cytogenetic remission was attained and he received an intensification and maintenance regimen for ALL, for a period of approximately 24 months. Four months following the completion of his treatment, the patient relapsed within the central nervous system (CNS). Intravenous salvage chemotherapy was initiated using a combination of fludarabine 30 mg/m2, followed by cytarabine 2 g/m2 4 h later on days 1 through 5 (FA). On day # 23 of FA, he developed a severe headache. A gadolinium-enhanced brain magnetic resonance imaging (MRI) revealed increased intracranial pressure. On day # 25, ophthalmology examination suggested bilateral papilledema. He was started on acetazolamide 250 mg twice daily. He had spontaneous resolution of his symptoms. The patient had no recurrence of papilledema or any other neurological symptoms. Intracranial hypertension secondary to HiDAC, is an exceedingly rare complication and is not regularly associated as a common side effect of cytarabine administration. Prompt action in diagnosing and treating intracranial hypertension will save the patient from consequences, such as loss of vision, that are prevalent in this condition.
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Affiliation(s)
- Z A Nurgat
- King Faisal Specialist Hospital and Research Centre, Pharmaceutical Care Division, PO Box 3354, Riyadh, 11211, Saudi Arabia.
| | - H Alzahrani
- King Faisal Specialist Hospital and Research Centre, Section of Adult Hematology/HSCT, PO Box 3354, Riyadh, 11211, Saudi Arabia
| | - M Lawrence
- King Faisal Specialist Hospital and Research Centre, Nursing Development, PO Box 3354, Riyadh, 11211, Saudi Arabia
| | - A Mannan
- King Faisal Specialist Hospital and Research Centre, Section of Adult Hematology/HSCT, PO Box 3354, Riyadh, 11211, Saudi Arabia
| | - M Ashour
- King Faisal Specialist Hospital and Research Centre, Pharmaceutical Care Division, PO Box 3354, Riyadh, 11211, Saudi Arabia
| | - W Rasheed
- King Faisal Specialist Hospital and Research Centre, Section of Adult Hematology/HSCT, PO Box 3354, Riyadh, 11211, Saudi Arabia
| | - M Aljurf
- King Faisal Specialist Hospital and Research Centre, Section of Adult Hematology/HSCT, PO Box 3354, Riyadh, 11211, Saudi Arabia
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Kevric J, Ashour M, Sarkar A. De Garengeot hernia at a country hospital. ANZ J Surg 2016; 88:930-931. [PMID: 27098987 DOI: 10.1111/ans.13596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 02/02/2016] [Accepted: 03/05/2016] [Indexed: 11/30/2022]
Affiliation(s)
- Jasmina Kevric
- Department of General Surgery; Central Gippsland Health Service; Sale Victoria Australia
| | - Mohamed Ashour
- Department of General Surgery; Central Gippsland Health Service; Sale Victoria Australia
| | - Anamitra Sarkar
- Department of General Surgery; Central Gippsland Health Service; Sale Victoria Australia
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Heneash A, Ashour M, Matar M. Effect of Un-live Microalgal diet, Nannochloropsis oculata and Arthrospira (Spirulina) platensis, Comparing to Yeast on Population of Rotifer, Brachionus plicatilis. ACTA ACUST UNITED AC 2015. [DOI: 10.21608/maj.2015.4632] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Alkattan K, Ashour M, Saleh W. P-182ENDOBRONCHIAL RUPTURE OF HYDATID CYST. Interact Cardiovasc Thorac Surg 2015. [DOI: 10.1093/icvts/ivv204.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Shafik HE, Ashour M. Frequency of EGFR Mutation and EML4-ALK fusion gene in Arab Patients with Adenocarcinoma of the Lung. Forum of Clinical Oncology 2015. [DOI: 10.1515/fco-2015-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Introduction: Improvement in the clinical outcome of lung cancer is likely to be achieved by identification of the molecular events that underlie its pathogenesis.
The frequency of epidermal growth factor receptor (EGFR) mutations is ethnicity-dependent, with a higher proportion in Asian populations than in whites, while the incidence of EML4-ALK (echinoderm microtubule-associated-protein like 4-anaplastic lymphoma kinase) fusion gene ranged from 1.6% to 16.4% in patients with NSCLC and these individuals were distinct from those harbouring mutations in the epidermal growth factor receptor gene.
This study was conducted to determine the frequency of EGFR mutation and EML4-ALK fusion gene in our population and to determine the effect of different clinicopathological features on the expression of those mutations in patients with lung adenocarcinoma.
Results: EGFR mutations were detected in approximately 33% of our patients in this series; the most frequently detected mutation was exon 19 deletion. EML4-ALK fusion gene was detected in 7.3% of patients.
Conclusion:
Our population exhibited the incidence of EGFR mutation approximately similar to that reported in East Asia and Japanese patients, higher than that recorded in USA, and Australia. However, more studies with larger patients’ numbers are needed to verify this finding.
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Affiliation(s)
| | - Mohamed Ashour
- Department of Clinical Oncology, Al Azhar University, Cairo, Egypt
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Nurgat ZA, Smythe M, Al-Jedai A, Ewing S, Rasheed W, Belgaumi A, Ahmed SO, Ashour M, Al Agil A, Siddiqui K, Aljurf M. Introduction of vincristine mini-bags and an assessment of the subsequent risk of extravasation. J Oncol Pharm Pract 2014; 21:339-47. [PMID: 24821691 DOI: 10.1177/1078155214531803] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
INTRODUCTION Numerous international organisations have advocated the preparation of vincristine in small volume intravenous bags in order to eliminate inadvertent intrathecal administration. However, the risk of extravasation is a significant deterrent, and adoption of this practice has been variable and only hesitantly accepted in the clinical setting. PURPOSE We carried out a study with the aims of establishing the incidence of reported extravasation of vincristine administration to paediatric and adult patients in mini-bags; here we describe motivating factors and barriers faced by clinical staff. The secondary aim was to support the need for change and implementation of the international recommendations. METHODS Chemotherapy-certified nurses completed a survey spanning August 2009 to August 2011, to ascertain the incidence of extravasation associated with the administration of vincristine in mini-bags. RESULTS This period captured 421 occasions of vincristine administration in 25-ml or 50-ml mini-bags (in 0.9% sodium chloride). The median age of patients was 13 years (range 2.5 months to 99 years). Vincristine was administered through peripheral lines (26.4%), portacath (52.0%), PICC line (15.9%) and Hickman line (5.7%). The majority of infusions were over at least 10 minutes (50.1%). There were no cases of extravasation reported. CONCLUSIONS The administration of vincristine in small volume intravenous bags was safe, practical, and feasible in all patient groups. The successful implementation of the international recommendations for vincristine administration in mini-bags to eliminate potential inadvertent intrathecal administration was dependent on stakeholder buy-in.
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Affiliation(s)
- Z A Nurgat
- Pharmaceutical Care Division, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia Adult Leukemia Unit, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - M Smythe
- Department of Nursing Quality, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - A Al-Jedai
- Pharmaceutical Care Division, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - S Ewing
- Adult Leukemia Unit, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia Department of Nursing, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - W Rasheed
- Adult Leukemia Unit, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - A Belgaumi
- Pediatric Leukemia Unit, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - S O Ahmed
- Adult Leukemia Unit, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - M Ashour
- Pharmaceutical Care Division, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia Pediatric Leukemia Unit, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - A Al Agil
- Pharmaceutical Care Division, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia Pediatric Leukemia Unit, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - K Siddiqui
- Pediatric Leukemia Unit, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - M Aljurf
- Adult Leukemia Unit, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
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Hussein M, Saleh W, Althaghafi K, Alkattan K, Ashour M. P-206IMPACT OF PROLONGED VENTILATED DONORS ON LUNG TRANSPLANTATION: SHORT-TERM RESULTS. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt288.206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Saad MH, Saleh HI, Konbor H, Ashour M. Image Retrieval based on Integration between YCbCr Color Histogram and Texture Feature. ACTA ACUST UNITED AC 2011. [DOI: 10.7763/ijcte.2011.v3.395] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Abstract
Four new purine analogues (nigricines 1 – 4) have been isolated from the Indonesian marine sponge Petrosia nigricans. The structures were elucidated by extensive 2D-NMR spectroscopic experiments and mass spectrometry.
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Affiliation(s)
- Mohamed Ashour
- Institut für Pharmazeutische Biologie und Biotechnologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, Geb. 26.23, 40225 Düsseldorf, Germany
- Department of Pharmacognosy, Al-Azhar University, Cairo, Egypt
| | - RuAngelie Edrada-Ebel
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, The John Arbuthnott Building, 27 Taylor Street, Glasgow G4 0NR, United Kingdom
| | - Rainer Ebel
- Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, UK
| | - Victor Wray
- Helmholtz Zentrum für Infektionsforschung, Inhoffenstrasse 7, D-38124 Braunschweig, Germany
| | - Rob.W.M. van Soest
- Zoölogisch Museum Amsterdam, Mauritskade 57, 1092 AD Amsterdam, The Netherlands
| | - Peter Proksch
- Institut für Pharmazeutische Biologie und Biotechnologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, Geb. 26.23, 40225 Düsseldorf, Germany
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Talkhan I, Atiya A, Sallam H, Ashour M, El Salam AMA, Regazzoni C. Comparing the Performance of Learnable Evolution Model LEM and Pattern Search as a Function Optimizer. 2006 ITI 4th International Conference on Information & Communications Technology 2006. [DOI: 10.1109/itict.2006.358228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Ashour M, Edrada R, Ebel R, Wray V, Wätjen W, Padmakumar K, Müller WEG, Lin WH, Proksch P. Kahalalide derivatives from the Indian sacoglossan mollusk Elysia grandifolia. J Nat Prod 2006; 69:1547-53. [PMID: 17125219 DOI: 10.1021/np060172v] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Two new cyclic depsipeptide derivatives, kahalalides R (1) and S (2), together with two known congeners, kahalalides F (3) and D (4), were isolated from the Indian sacoglossan mollusk Elysia grandifolia. The structures of the new compounds were unambiguously established on the basis of NMR spectroscopic (1H, 13C, COSY, HMBC) and mass spectrometric (FABMS, ESIMS, MALDI-TOF/PSD) data, which also included Marfey amino acid analyses. The new derivative kahalalide R was found to exert comparable or even higher cytotoxicity than the potential drug candidate kahalalide F toward the MCF7 human mammary carcinoma cell line.
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Affiliation(s)
- Mohamed Ashour
- Institut für Pharmazeutische Biologie und Biotechnologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, Geb. 26.23, 40225 Düsseldorf, Germany
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Hendawi M, Sauvé S, Ashour M, Brousseau P, Fournier M. A new ultrasound protocol for extrusion of coelomocyte cells from the earthworm Eisenia fetida. Ecotoxicol Environ Saf 2004; 59:17-22. [PMID: 15261718 DOI: 10.1016/j.ecoenv.2003.07.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2003] [Revised: 07/17/2003] [Accepted: 07/19/2003] [Indexed: 05/24/2023]
Abstract
There is mounting evidence that earthworms could be used as a sentinel species for soil ecotoxicity evaluation. In this aspect, phagocytosis by coelomocytes was shown to be a sensitive biomarker of exposure to xenobiotics. In this paper, we introduce a simple method for ultrasound extrusion of earthworm coelomocytes that generates a high cell yield, does not interfere with phagocytic competence, and requires a minimum of manipulations. Coelomocytes were extruded from the earthworm Eisenia fetida using this new ultrasound method and compared with ethanol and electrical extrusion. The ultrasonic extrusion showed the highest cell recovery with 3.17 +/ -0.8 x 10(6) cells per earthworm compared with 2.22 +/- 0.8 x 10(6) cells per earthworm for electrical extrusion and 1.57 +/- 0.07 x 10(6) cells per earthworm for ethanol extrusion. No significant differences in the cell viability were observed using propidium iodide and flow cytometry with viability for extrusion with ethanol of 63.8 +/- 12.7%, electrical 76.8 +/- 7.5%, and ultrasound 68.2 +/- 7.8%. To compare the potential effect of extrusion on cell quality, the cells extruded using the three methods were subjected to an 18-h in vitro exposure to methylmercury chloride (MeHgCl; CH3HgCl) with concentrations ranging from 10(-9) to 10(-4)M. The half-maximal effective concentration (EC50) for inhibition of phagocytosis occurred between 10(-7) and 10(-6)M. We found no significant differences among the extrusion methods for the phagocytic potential of the coelomocytes. This method does not harm the worms and can certainly improve collection of coelomocytes from earthworms and therefore contribute to the development of bioassays using invertebrates.
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Affiliation(s)
- M Hendawi
- INRS-Institut Armand Frappier, Université du Québec, Pointe-Claire, QC, Canada
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Hajjar W, El-Medany Y, Essa M, Al-Mulhim F, Ashour M, Al-Kattan K. Esophago-broncho-cutaneous fistulae and tuberculous mediastinal lymphadenitis. J Cardiovasc Surg (Torino) 2003; 44:151-3. [PMID: 12627092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
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Hajjar W, El-Madany Y, Ashour M, Al-Kattan K. Life threatening complications caused by bronchogenic and oesophageal duplication cysts in a child. J Cardiovasc Surg (Torino) 2003; 44:135-7. [PMID: 12627086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
An 11-year-old girl presented with severe respiratory distress, fever and septic manifestations. Computed tomography scan (CT) of the chest showed 2 separate superior and posterior mediastinal cysts, the upper one causing severe extrinsic compression of the trachea, and the oesophagus, while the lower cyst was at the subcarinal region compressing the 2 major bronchi. Emergency thoracotomy was performed permitting complete resection of intra-mural oesophageal enteric cyst, and a subcarinal bronchogenic cyst. The postoperative course was uneventful.
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Affiliation(s)
- W Hajjar
- Thoracic Surgery Division, Department of Surgery, King Khalid University Hospital, Riyadh, Saudi Arabia
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