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Belal A, Almalki AH, Farghali AA, Mahmoud R, Atta RR, Allah AE, Hassan WH, Lee S, Kotp AA, Essam D, Hassan AHE, Ghoneim MM, Abo El-Ela FI, Abdelwahab A. Nitrogen-doped carbon quantum dots as a novel treatment for black fungal bone infections (Mucormycosis): in vitro and in vivo study. Artif Cells Nanomed Biotechnol 2024; 52:131-144. [PMID: 38423087 DOI: 10.1080/21691401.2024.2318212] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Most fungal bone and joint infections (arthritis) are caused by Mucormycosis (Mucor indicus). These infections may be difficult to treat and may lead to chronic bone disorders and disabilities, thus the use of new antifungal materials in bone disorders is vital, particularly in immunocompromised individuals, such as those who have contracted coronavirus disease 2019 (COVID-19). Herein, we reported for the first time the preparation of nitrogen-doped carbon quantum dots (N/CQDs) and a nitrogen-doped mesoporous carbon (N/MC) using a quick micro-wave preparation and hydrothermal approach. The structure and morphology were analysed using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and surface area analyser. Minimum inhibitory concentration (MIC), disc diffusion tests, minimum fungicidal concentration (MFC) and antifungal inhibitory percentages were measured to investigate the antifungal activity of N/CQDs and N/MC nanostructures. In addition to the in vivo antifungal activity in rats as determined by wound induction and infection, pathogen count and histological studies were also performed. According to in vitro and in vivo testing, both N/CQDs with small size and N/MC with porous structure had a significant antifungal impact on a variety of bone-infecting bacteria, including Mucor infection. In conclusion, the present investigation demonstrates that functional N/CQDs and N/MC are effective antifungal agents against a range of microbial pathogenic bone disorders in immunocompromised individuals, with stronger and superior fungicidal activity for N/CQDs than N/MC in vitro and in vivo studies.
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Affiliation(s)
- Amany Belal
- Department of Pharmaceutical Chemistry, College of Pharmacy, Taif University, Taif, Saudi Arabia
| | - Atiah H Almalki
- Department of Pharmaceutical Chemistry, College of Pharmacy, Taif University, Taif, Saudi Arabia
- Addiction and Neuroscience Research Unit, College of Pharmacy, Taif University, Taif, Saudi Arabia
| | - Ahmed A Farghali
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Science (PSAS), Beni-Suef University, Beni-Suef, Egypt
| | - Rehab Mahmoud
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - R R Atta
- Department of Chemistry, Faculty of Science, Damietta University, Damietta, Egypt
| | - Abeer Enaiet Allah
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Walid Hamdy Hassan
- Mycology and Immunology Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Sangmin Lee
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul, Republic of Korea
- Department of Regulatory Science, Graduated School, Kyung Hee University, Seoul, Republic of Korea
| | - Amna A Kotp
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Science (PSAS), Beni-Suef University, Beni-Suef, Egypt
| | - Doaa Essam
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Ahmed H E Hassan
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
- Medicinal Chemistry Laboratory, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Mohammed M Ghoneim
- Department of Pharmacy Practice, College of Pharmacy, AlMaarefa University, Ad Diriyah, Saudi Arabia
- Pharmacognosy and Medicinal Plants Department, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Fatma I Abo El-Ela
- Department of Pharmacology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Abdalla Abdelwahab
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Science (PSAS), Beni-Suef University, Beni-Suef, Egypt
- Faculty of Science, Galala University, Sokhna, Egypt
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Kotp AA, Abdelwahab A, Farghali AA, Rouby WMAE, Enaiet Allah A. Evaluating the electrocatalytic activity of flower-like Co-MOF/CNT nanocomposites for methanol oxidation in basic electrolytes. RSC Adv 2023; 13:27934-27945. [PMID: 37736558 PMCID: PMC10509782 DOI: 10.1039/d3ra05105f] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 09/06/2023] [Indexed: 09/23/2023] Open
Abstract
Efficient electrocatalysts, with high tolerance to methanol oxidation, good stability, and acceptable cost are the main requisites for promising direct methanol fuel cell (DMFC) electrode materials. This target can be achieved by the integration of different active materials with unique structures. In this work, a cobalt metal-organic framework (Co-MOF) flower structure was prepared by a hydrothermal method, and then a simple ultrasonication method was employed to anchor carbon nanotubes (CNTs) in between the MOF flower petals and fabricate a Co-MOF/CNT hybrid composite. Different ratios of CNTs were used in the composite preparations, namely 25, 50, and 75 wt% of the composite. The nanocomposites were entirely investigated using different characterization techniques, such as XRD, FTIR, SEM, TEM, and XPS. Comparative electrochemical measurements confirmed that due to the integration of highly conductive CNTs with the porous active fascinating structure of Co-MOF, Co-MOF/50% CNTs exhibited improved electrocatalytic activity with a current density of 35 mA cm-2 at a potential of 0.335 V and a scan rate of 50 mV s-1. The excellent electrochemical activity and stability could be due to the synergy between Co-MOF and the CNTs that conferred adequate active sites for methanol electro-oxidation and a lower equivalent series resistance, as revealed from the electrochemical impedance spectroscopy study. This study opens a new avenue to decrease the utilization of platinum and increase the methanol oxidation activity using low-cost catalysts.
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Affiliation(s)
- Amna A Kotp
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University Beni-Suef 62511 Egypt
| | - Abdalla Abdelwahab
- Faculty of Science, Galala University Sokhna Suez 43511 Egypt
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University Beni-Suef 62511 Egypt
| | - Ahmed A Farghali
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University Beni-Suef 62511 Egypt
| | - Waleed M A El Rouby
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University Beni-Suef 62511 Egypt
| | - Abeer Enaiet Allah
- Chemistry Department, Faculty of Science, Beni-Suef University Beni-Suef 62511 Egypt
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Mohamed A, Atta RR, Kotp AA, Abo El-Ela FI, Abd El-Raheem H, Farghali A, Alkhalifah DHM, Hozzein WN, Mahmoud R. Green synthesis and characterization of iron oxide nanoparticles for the removal of heavy metals (Cd 2+ and Ni 2+) from aqueous solutions with Antimicrobial Investigation. Sci Rep 2023; 13:7227. [PMID: 37142660 PMCID: PMC10160056 DOI: 10.1038/s41598-023-31704-7] [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] [Received: 11/20/2022] [Accepted: 03/16/2023] [Indexed: 05/06/2023] Open
Abstract
Clove and green Coffee (g-Coffee) extracts were used to synthesize green iron oxide nanoparticles, which were then used to sorb Cd2+ and Ni2+ ions out of an aqueous solution. Investigations with x-ray diffraction, Fourier-transform infrared spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, nitrogen adsorption and desorption (BET), Zeta potential, and scanning electron microscopy were performed to know and understand more about the chemical structure and surface morphology of the produced iron oxide nanoparticles. The characterization revealed that the main component of iron nanoparticles was magnetite when the Clove extract was used as a reducing agent for Fe3+, but both magnetite and hematite were included when the g-Coffee extract was used. Sorption capacity for metal ions was studied as a function of sorbent dosage, metal ion concentration, and sorption period. The maximum Cd2+ adsorption capacity was 78 and 74 mg/g, while that of Ni2+ was 64.8 and 80 mg/g for iron nanoparticles prepared using Clove and g-Coffee, respectively. Different isotherm and kinetic adsorption models were used to fit experimental adsorption data. Adsorption of Cd2+ and Ni2+ on the iron oxide surface was found to be heterogeneous, and the mechanism of chemisorption is involved in the stage of determining the rate. The correlation coefficient R2 and error functions like RMSE, MES and MAE were used to evaluate the best fit models to the experimental adsorption data. The adsorption mechanism was explored using FTIR analysis. Antimicrobial study showed broad spectrum antibacterial activity of the tested nanomaterials against both Gram positive (S. aureus) (25923) and Gram negative (E. coli) (25913) bacteria with increased activity against Gram positive bacteria than Gram negative one and more activity for Green iron oxide nanoparticles prepared from Clove than g-Coffee one.
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Affiliation(s)
- Abdelrahman Mohamed
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.
| | - R R Atta
- Department of Chemistry, Faculty of Science, Damietta University, Damietta, Egypt.
- St. Petersburg State University, 7/9 Universitetskaya Nab., St. Petersburg, 199034, Russia.
| | - Amna A Kotp
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt
| | - Fatma I Abo El-Ela
- Department of Pharmacology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Hany Abd El-Raheem
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt
- Environmental Engineering Program, Zewail City of Science and Technology, October Gardens, 6th of October City, Giza, 12578, Egypt
| | - Ahmed Farghali
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt
| | - Dalal Hussien M Alkhalifah
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, B.O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Wael N Hozzein
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Rehab Mahmoud
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.
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Mohammed AN, Radi AM, Khaled R, Abo El-Ela FI, Kotp AA. Exploitation of new approach to control of environmental pathogenic bacteria causing bovine clinical mastitis using novel anti-biofilm nanocomposite. Environ Sci Pollut Res Int 2020; 27:42791-42805. [PMID: 32725561 DOI: 10.1007/s11356-020-10054-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 02/20/2020] [Accepted: 07/07/2020] [Indexed: 06/11/2023]
Abstract
New approaches are required for prevention and control of biofilm-producing bacteria and consequently mitigating the health problems of bovine clinical mastitis. This work designed to determine prevalence rates of biofilm-producing bacteria that causing bovine clinical mastitis and evaluate the anti-biofilm effectiveness of novel nanocomposite of zinc-aluminum layered double hydroxide intercalated with gallic acid (GA) as chelating agent (Zn-Al LDH/GA) on the prevention and control of environmental pathogenic bacteria; Escherichia coli (E. coli), Klebsiella pneumoniae (K. pneumoniae), Staphylococcus aureus (S. aureus), and Coagulase-negative staphylococci (CNS), besides Listeria monocytogenes (L. monocytogenes) and assess the ability to use as an antimicrobial agent, and/or sanitizer for milking equipment. All samples (n = 230) involved clinical mastitis cow's milk (n = 50) beside environmental samples (n = 180) were collected then examined for isolation and identification of bacterial pathogens. Zn-Al LDH/GA nanocomposite was synthesized using co-precipitation method, then characterized by Fourier-transform infrared spectroscopy (FT-IR); X-ray diffraction (XRD); field emission scanning electron microscopy (FESEM); high-resolution transmission electron microscopy (HRTEM); thermogravimetric analysis (TGA); differential thermal analysis (DTA); zeta potential; DLS analysis; and Brunauer, Emmett, and Teller (BET) surface area. The anti-biofilm activity of nanocomposite against mastitis-causing bacteria was detected using the broth micro-dilution and disc-diffusion assay. Results, the minimum concentration of Zn-Al LDH/GA that inhibited the growth of gram-positive and negative bacteria, were 312-625 and 5000 μg/mL, respectively. The LD50 of Zn-Al LDH/GA was determined in mice at 1983.3 mg/kg b.wt. As a conclusion, Zn-Al LDH/GA nanocomposite proved its efficiency as an antimicrobial agent and/or sanitizer used for cleaning of milking equipment, due to it could inhibit the growth and multiplication of potentially pathogenic bacteria that causing clinical mastitis and its formation of biofilm on the milking equipment. Zn-Al LDH/GA was found to use under varying pH conditions compared with other commercial sanitizer used besides the formation of nanocomposite increases the material stability.
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Affiliation(s)
- Asmaa N Mohammed
- Department of Hygiene, Zoonoses and Epidemiology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt.
| | - Abeer M Radi
- Department of Pharmacology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Rehab Khaled
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Fatma I Abo El-Ela
- Department of Pharmacology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Amna A Kotp
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
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