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Onajah S, Sarkar R, Islam MS, Lalley M, Khan K, Demir M, Abdelhamid HN, Farghaly AA. Silica-Derived Nanostructured Electrode Materials for ORR, OER, HER, CO 2RR Electrocatalysis, and Energy Storage Applications: A Review. CHEM REC 2024; 24:e202300234. [PMID: 38530060 DOI: 10.1002/tcr.202300234] [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: 07/03/2023] [Revised: 02/13/2024] [Indexed: 03/27/2024]
Abstract
Silica-derived nanostructured catalysts (SDNCs) are a class of materials synthesized using nanocasting and templating techniques, which involve the sacrificial removal of a silica template to generate highly porous nanostructured materials. The surface of these nanostructures is functionalized with a variety of electrocatalytically active metal and non-metal atoms. SDNCs have attracted considerable attention due to their unique physicochemical properties, tunable electronic configuration, and microstructure. These properties make them highly efficient catalysts and promising electrode materials for next generation electrocatalysis, energy conversion, and energy storage technologies. The continued development of SDNCs is likely to lead to new and improved electrocatalysts and electrode materials. This review article provides a comprehensive overview of the recent advances in the development of SDNCs for electrocatalysis and energy storage applications. It analyzes 337,061 research articles published in the Web of Science (WoS) database up to December 2022 using the keywords "silica", "electrocatalysts", "ORR", "OER", "HER", "HOR", "CO2RR", "batteries", and "supercapacitors". The review discusses the application of SDNCs for oxygen reduction reaction (ORR), oxygen evolution reaction (OER), hydrogen evolution reaction (HER), carbon dioxide reduction reaction (CO2RR), supercapacitors, lithium-ion batteries, and thermal energy storage applications. It concludes by discussing the advantages and limitations of SDNCs for energy applications.
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Affiliation(s)
- Sammy Onajah
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, 60439, United States
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois, 60637, United States
| | - Rajib Sarkar
- Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia, 23284-2006, United States
| | - Md Shafiul Islam
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, 60439, United States
| | - Marja Lalley
- Department of Chemistry, University of Chicago, Chicago, Illinois, 60637, United States
| | - Kishwar Khan
- Department of Chemistry, City University of Hong Kong, Hong Kong, 999077, China
| | - Muslum Demir
- Department of Chemical Engineering, Bogazici University, 34342, Istanbul, Turkey
- TUBITAK Marmara Research Center, Material Institute, Gebze, 41470, Turkey
| | - Hani Nasser Abdelhamid
- Advanced Multifunctional Materials Laboratory, Department of Chemistry, Assiut University, Assiut, 71516, Egypt
- Egyptian Russian University, Badr City, Cairo, 11829, Egypt
| | - Ahmed A Farghaly
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois, 60439, United States
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois, 60637, United States
- Chemistry Department, Faculty of Science, Assiut University, Assiut, 71516, Egypt
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Yu Q, Bai J, Huang J, Demir M, Farghaly AA, Aghamohammadi P, Hu X, Wang L. One-Pot Synthesis of Melamine Formaldehyde Resin-Derived N-Doped Porous Carbon for CO 2 Capture Application. Molecules 2023; 28:molecules28041772. [PMID: 36838757 PMCID: PMC9958949 DOI: 10.3390/molecules28041772] [Citation(s) in RCA: 1] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/16/2023] Open
Abstract
The design and synthesis of porous carbons for CO2 adsorption have attracted tremendous interest owing to the ever-soaring concerns regarding climate change and global warming. Herein, for the first time, nitrogen-rich porous carbon was prepared with chemical activation (KOH) of commercial melamine formaldehyde resin (MF) in a single step. It has been shown that the porosity parameters of the as-prepared carbons were successfully tuned by controlling the activating temperature and adjusting the amount of KOH. Thus, as-prepared N-rich porous carbon shows a large surface area of 1658 m2/g and a high N content of 16.07 wt%. Benefiting from the unique physical and textural features, the optimal sample depicted a CO2 uptake of up to 4.95 and 3.30 mmol/g at 0 and 25 °C under 1 bar of pressure. More importantly, as-prepared adsorbents show great CO2 selectivity over N2 and outstanding recyclability, which was prominently important for CO2 capture from the flue gases in practical application. An in-depth analysis illustrated that the synergetic effect of textural properties and surface nitrogen decoration mainly determined the CO2 capture performance. However, the textural properties of carbons play a more important role than surface functionalities in deciding CO2 uptake. In view of cost-effective synthesis, outstanding textural activity, and the high adsorption capacity together with good selectivity, this advanced approach becomes valid and convenient in fabricating a unique highly efficient N-rich carbon adsorbent for CO2 uptake and separation from flue gases.
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Affiliation(s)
- Qiyun Yu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China
| | - Jiali Bai
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China
| | - Jiamei Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China
| | - Muslum Demir
- Department of Chemical Engineering, Osmaniye Korkut Ata University, Osmaniye 80000, Turkey
- TUBITAK Marmara Research Center, Material Institute, Gebze 41470, Turkey
| | - Ahmed A. Farghaly
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, IL 60637, USA
- Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Parya Aghamohammadi
- Department of Chemical Engineering, Osmaniye Korkut Ata University, Osmaniye 80000, Turkey
| | - Xin Hu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China
- Correspondence: (X.H.); (L.W.); Tel.: +86-151-0579-0257 (X.H.)
| | - Linlin Wang
- Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology and Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua 321004, China
- Correspondence: (X.H.); (L.W.); Tel.: +86-151-0579-0257 (X.H.)
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Khan RK, Silva TA, Fatibello‐Filho O, Collinson MM, Farghaly AA. Nanoporous Pt(Au) Alloys for the Enhanced, Non‐enzymatic Detection of Hydrogen Peroxide under Biofouling Conditions. ELECTROANAL 2022. [DOI: 10.1002/elan.202100568] [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] [Indexed: 11/08/2022]
Affiliation(s)
- Rezaul K. Khan
- Department of Chemistry Virginia Commonwealth University 23284-2006 Richmond Virginia United States
| | - Tiago A. Silva
- Department of Chemistry Federal University of São Carlos CEP: 13560-970 São Carlos SP Brazil
- Department of Chemistry Federal University of Viçosa CEP: 36570-900 Viçosa MG Brazil
| | - Orlando Fatibello‐Filho
- Department of Chemistry Federal University of São Carlos CEP: 13560-970 São Carlos SP Brazil
| | - Maryanne M. Collinson
- Department of Chemistry Virginia Commonwealth University 23284-2006 Richmond Virginia United States
| | - Ahmed A. Farghaly
- Chemical Sciences and Engineering Division Argonne National Laboratory 60439-4801 Lemont Illinois United States
- Chemistry Department, Faculty of Science Assiut University 71516 Assiut Egypt
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El-Moneim DA, Dawood MFA, Moursi YS, Farghaly AA, Afifi M, Sallam A. Positive and negative effects of nanoparticles on agricultural crops. Nanotechnol Environ Eng 2021; 6:21. [DOI: 10.1007/s41204-021-00117-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/23/2021] [Indexed: 09/02/2023]
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Abstract
A new electrosynthetic approach for the fabrication of three-dimensional bicontinuous nanoporous platinum-based (3D-BC-NP-Pt(Au)) electrodes is described. Binary Pt-Ag alloys are first electrodeposited on gold substrates from appropriately formulated plating solutions. Following annealing and dealloying, a new family of nanoporous platinum-based electrodes emerges whose morphology, porosity, and chemical compositions depend on electrodeposition parameters and plating solution composition. Scanning electron microscopy images reveal an interesting and distinctive nanoporous gold-like microstructure with pores and ligaments in the 10-30 nm range arranged in a bicontinuous fashion throughout the thickness of the film. X-ray photoelectron spectroscopy (XPS) confirms that the as-formed electrodeposited films are silver-rich platinum binary alloys. Interestingly, XPS also reveals that after annealing and dealloying, the electrodes are actually ternary alloys containing platinum, gold, and a small amount of residual silver that remains after dealloying. Electrochemical measurements are consistent with this result and disclose a high surface area with roughness factors of 15-24. The ability to successfully conduct electrochemical measurements in biofouling solutions via a unique biosieving-like mechanism is demonstrated by exposure of the unique 3D bicontinuous nanoporous platinum-based electrode to fibrinogen in phosphate buffer and in a solution containing red blood cells. The work described herein has the potential to enrich the fields of electrochemical sensing and biosensing via the introduction of new 3D bicontinuous nanostructured porous platinum-based electrodes that can be easily and reliably fabricated.
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Affiliation(s)
- Ahmed A Farghaly
- Advanced Photon Source , Argonne National Laboratory , Lemont , Illinois 60439-4854 , United States
- Chemistry Department, Faculty of Science , Assiut University , Assiut 71516 , Egypt
| | - Rezaul K Khan
- Department of Chemistry , Virginia Commonwealth University , Richmond , Virginia 23284-2006 , United States
| | - Maryanne M Collinson
- Department of Chemistry , Virginia Commonwealth University , Richmond , Virginia 23284-2006 , United States
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Abstract
Using a single-potential-step coelectrodeposition route, Ppy-SiO2 nanocomposite films characterized by a multimodal porous structure were cathodically deposited from ethanolic solutions on oxidizable and nonoxidizable substrates for the first time. The materials produced have an interesting and unique strata-like pore structure along their depth. With the exception of a silica-rich inner region, the nanocomposite films are homogeneous in composition. Because the region closest to the electrode surface is silica-rich, the fabrication of Ppy-SiO2 and Ppy free-standing films become possible using a multistep etching strategy. Such films can be captured on a variety of different supports depending on the application, and they maintain their conductivity when interfaced with an electrode surface. These mesoporous composite films form through a unique mechanism that involves the production of two catalysts, OH(-) and NO(+). Through the process of understanding the reaction mechanism, we highlighted the effect of two simultaneous competing redox reactions occurring at the electrode interface on the morphology of the electrodeposited Ppy nanocomposite films and how solvent can influence the Ppy electropolymerization reaction mechanism and hence control the morphology of the final material. In an ethanolic solvent system, the pyrrole monomers undergo a step-growth polymerization, and particulate-like nanostructured films were obtained even upon changing the monomer or acid concentration. In an aqueous-based system, nanowire-like structures were produced, which is consistent with a chain-growth mechanism. Such materials are promising candidates for a wide range of applications including electrochemical sensing, energy storage, and catalysis.
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Affiliation(s)
- Ahmed A Farghaly
- Department of Chemistry, Virginia Commonwealth University , Richmond, Virginia 23284-2006, United States
| | - Maryanne M Collinson
- Department of Chemistry, Virginia Commonwealth University , Richmond, Virginia 23284-2006, United States
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Freeman CJ, Farghaly AA, Choudhary H, Chavis AE, Brady KT, Reiner JE, Collinson MM. Microdroplet-Based Potentiometric Redox Measurements on Gold Nanoporous Electrodes. Anal Chem 2016; 88:3768-74. [DOI: 10.1021/acs.analchem.5b04668] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Christopher J. Freeman
- Department
of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284-2006, United States
| | - Ahmed A. Farghaly
- Department
of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284-2006, United States
| | - Hajira Choudhary
- Department
of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284-2006, United States
| | - Amy E. Chavis
- Department
of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Kyle T. Brady
- Department
of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Joseph E. Reiner
- Department
of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Maryanne M. Collinson
- Department
of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284-2006, United States
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Xue B, Farghaly AA, Guo Z, Zhao P, Li H, Zhou C, Li L. Monoclinic Hydroxyapatite Nanoplates Hybrid Composite with Improved Compressive Strength, and Porosity for Bone Defect Repair: Biomimetic Synthesis and Characterization. J Nanosci Nanotechnol 2016; 16:2254-2263. [PMID: 27455626 DOI: 10.1166/jnn.2016.10919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Calcium phosphate cement (CPC) has been used for bone restoration despite its intrinsic fragile property. In order to enhance the CPC mechanical properties, biopolymers were introduced as filler to prepare CPC based cements. Chitosan/tetracalcium phosphate (TTCP)/dicalcium phosphate anhydrous (DCPA) based cement for bone repair has been prepared in the study. Solidification of the prepared cement was carried out in a simulate body fluid at 37 degrees C. The introduction of chitosan improved the mechanical performance of the as-prepared CPC hybrid nanocomposite. FTIR, SEM, TEM, HRTEM, XRD, and SAED were used to characterize the CPC nanocomposite. Data simulations have been performed to assist in determining the crystalline phase/s in the CPC hybrid nanocomposite. Based on the SAED, HRTEM measurements and data simulations, a monoclinic phase of hydroxyapatite (HAP) with a plate-like structure was obtained in the CPC system, which is believed to be responsible for the observed enhancement in CPC mechanical properties. The obtained composite has a biocompatibility comparable to that of commercial sample.
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Pal RK, Farghaly AA, Collinson MM, Kundu SC, Yadavalli VK. Photolithographic Micropatterning of Conducting Polymers on Flexible Silk Matrices. Adv Mater 2016; 28:1406-1412. [PMID: 26641445 DOI: 10.1002/adma.201504736] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [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: 09/25/2015] [Revised: 11/06/2015] [Indexed: 06/05/2023]
Abstract
UNLABELLED High-resolution micropatterning of a PEDOT PSS conducting-polymer-silksericin composite is presented using a water-based, benchtop photolithographic process. Conducting microstructures formed on a flexible silk fibroin sheet allow a fully organic, flexible bioelectronic device. Large-area microfabricated devices such as biosensors that are biocompatible and degradable over a controlled period of time can be formed.
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Affiliation(s)
- Ramendra K Pal
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, 601 W Main Street, Richmond, VA, 23284, USA
| | - Ahmed A Farghaly
- Department of Chemistry, Virginia Commonwealth University, 1001 W Main Street, Richmond, VA, 23284, USA
| | - Maryanne M Collinson
- Department of Chemistry, Virginia Commonwealth University, 1001 W Main Street, Richmond, VA, 23284, USA
| | - Subhas C Kundu
- Department of Biotechnology, Indian Institute of Technology, Kharagpur, 721302, India
| | - Vamsi K Yadavalli
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, 601 W Main Street, Richmond, VA, 23284, USA
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Farghaly AA, Collinson MM. Electroassisted codeposition of sol-gel derived silica nanocomposite directs the fabrication of coral-like nanostructured porous gold. Langmuir 2014; 30:5276-5286. [PMID: 24766096 DOI: 10.1021/la500614g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Herein, we report on a one-step coelectrodeposition method to form gold-silica nanocomposite materials from which high surface area nanostructured gold electrodes can be produced. The as-prepared Au-SiO2 films possess an interconnected three-dimensional porous framework with different silica-gold ratios depending on the deposition solutions and parameters. Chemical etching of the nanocomposite films using hydrofluoric acid resulted in the formation of nanostructured porous gold films with coral-like structures and pores in the nanometer range. The cross-linkage of the gold coral branches resulted in the generation of a porous framework. X-ray photoelectron spectroscopy confirms the complete removal of silica. Well-controlled surface area enhancement, film thickness, and morphology were achieved by manipulating the deposition parameters, such as potential, time, and gold ion and sol-gel monomer concentrations in the deposition solution. An enhancement in the surface area of the electrode up to 57 times relative to the geometric area has been achieved. The thickness of the as-prepared Au-SiO2 nanocomposite films is relatively high and varied from 8 to 15 μm by varying the applied deposition potential while the thickness of the coral-like nanostructured porous gold films ranged from 0.22 to 2.25 μm. A critical sol-gel monomer concentration (CSGC) was determined at which the deposited silica around the gold coral was able to stabilize the coral-like gold nanostructures, while below the CSGC, the coral-like gold nanostructures were unstable and the surface area of the nanostructured porous gold electrodes decreased.
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Affiliation(s)
- Ahmed A Farghaly
- Department of Chemistry, Virginia Commonwealth University , Richmond, Virginia 23284-2006, United States
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Farghaly AA, Hassan ZM. Methanolic extract of Lupinus termis ameliorates DNA damage in alloxan-induced diabetic mice. Eur Rev Med Pharmacol Sci 2012; 16 Suppl 3:126-132. [PMID: 22957427] [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: 06/01/2023]
Abstract
UNLABELLED Diet therapy is showing a bright future in the therapy of diabetes mellitus (DM). The seeds of Lupinus termis are used in the Middle East and Africa as food and in folklore medicine. In traditional medicine, the seeds are reputed to be effective for diabetes. The aim of this work was to evaluate the antigenotoxic effect of Lupinus termis methanolic extract (LTE) against DM oxidative stress. MATERIAL AND METHODS The analysis of micronuclei (MN) and chromosomal aberrations are accurate cytogenetic techniques used to show chromosomal damage caused by clastogenic affects. The present study was designed to evaluate: (1) the effects of DM on bone marrow MN frequency and chromosomal aberrations, (2) the effect of oral treatment by gavage of LTE on MN frequency and chromosomal aberrations produced by DM. RESULTS Frequencies of MN and chromosomal aberrations have been significantly increased in diabetic mice compared with the normal mice (p < 0.05). LTE at a dose 25, 50 and 100 mg/kg b.wt. for 15 days groups treatment in diabetic mice were significantly decreased MN frequency and chromosomal aberrations in a dose dependent manner. CONCLUSIONS Our results suggest that LTE is a suitable agent for preventing DM-induced DNA damage. To the best of our knowledge, this is the first report on LTE having a potential diabetes-associated DNA damage-protecting activity in vivo.
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Affiliation(s)
- A A Farghaly
- Department of Genetics and Cytology, National Research Center, Dokki Tahrir Street, Giza, Egypt.
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Donya SM, Farghaly AA, Abo-Zeid MA, Aly HF, Ali SA, Hamed MA, El-Rigal NS. Malachite green induces genotoxic effect and biochemical disturbances in mice. Eur Rev Med Pharmacol Sci 2012; 16:469-82. [PMID: 22696874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND AND OBJECTIVES Malachite green (MG) is a triarylaminmethane dye used in the fish industry as an anti-fungal agent. Concern over MG is due to the potential for consumer exposure, suggestive evidence of tumor promotion in rodent liver, and suspicion of carcinogenicity based on structure-activity relationships. In order to evaluate the risks associated with exposure to MG, we examined the mutagenicity and biochemical effect of MG. MATERIALS AND METHODS For genotoxic effect we use the doses 27, 91, 272 and 543 mg/kg b.wt. for different period of time (7, 14, 21 and 28 days) to evaluate chromosomal aberrations in mouse somatic and germ cells as well as sister chromatid exchanges in bone marrow cells. For DNA fragmentation assay from mouse liver the same doses of MG were used for 28 days. For measuring biochemical parameters such as glycolysis and gluconeogenesis enzyme pathways, antioxidant indices, hepatic marker enzymes, total protein, glucose, glycogen levels and liver function enzyme activities were evaluated. Mice were treated orally up to 28 days with the two high doses of MG 272 and 543 mg/kg b.wt. RESULTS AND CONCLUSIONS Our results show that MG induce elevation in the percentage of SCE's and chromosomal aberrations (p < 0.01) after treatment with the high doses for long period of time. MG also induces DNA damage in mice liver in a dose dependent manner. Beside, MG treatment either in low or high doses causes biochemical disturbances in the major glucolytic-gluconeogenic pathways, hepatic marker enzymes, depleted glutathione and increased free radical as determined by increasing lipid peroxide. Histopathological observations revealed that MG induced sinusoidal, congestion, focal necrosis and degenerating in hepatic cells, hypertrophy and vacuolization followed by necrosis and cirrhosis.
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Affiliation(s)
- S M Donya
- Department of Genetics and Cytology, Division of Genetic Engineering and Biotechnology, and National Research Center, Dokki, Cairo, Egypt.
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Farghaly AA, Bekhit AA, Park JY. Design and synthesis of some oxadiazolyl, thiadiazolyl, thiazolidinyl, and thiazolyl derivatives of 1H-pyrazole as anti-inflammatory antimicrobial agents. Arch Pharm (Weinheim) 2000; 333:53-7. [PMID: 10783518 DOI: 10.1002/(sici)1521-4184(200002)333:2/3<53::aid-ardp53>3.0.co;2-e] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Four series of 1H-pyrazole derivatives have been synthesized. The first series was prepared by cyclization of the intermediate 3-(5-bromo-2-thienyl)-1-phenyl-1H-pyrazole-4-carbaldehyde aroyl-hydrazone 4a-c with acetic anhydride to afford the corresponding oxadiazoline derivatives 5a-c. The other series were prepared by the cyclization of the intermediate 3-(5-bromo-2-thienyl)-1-phenyl-4-substituted thiocarbamoylhydrazonomethyl-1H-pyrazole 6a-c with acetic anhydride, ethyl bromoacetate or phenacyl bromide giving rise to 3-(5-bromo-2-thienyl)-1-phenyl-4-[3-acetyl-5-(N-substituted acetamido)-2,3-dihydro-1,3,4-thiadiazol-2-yl]-1H-pyrazoles 7a-c, 3-(5-bromo-2-thienyl)-1-phenyl-4-(3-substituted- 4-oxothiazolidin-2-ylidenehydrazonomethyl)-1H-pyrazoles 8a-c, or 3-(5-bromo-2-thienyl)-1-phenyl-4-(3-substituted-4- phenyl-2,3-dihydrothiazol-2-ylidenehydrazonomethyl)-1H-pyraz oles 9a-c respectively. Some of these compounds showed anti-inflammatory, antibacterial or antifungal activities comparable to that of Proquazone, Ampicillin, or Clotrimazole respectively.
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Affiliation(s)
- A A Farghaly
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Alexandria, Egypt
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