1
|
Krumova E, Benkova D, Stoyancheva G, Dishliyska V, Miteva-Staleva J, Kostadinova A, Ivanov K, El-Sayed K, Staneva G, Elshoky HA. Exploring the mechanism underlying the antifungal activity of chitosan-based ZnO, CuO, and SiO 2 nanocomposites as nanopesticides against Fusarium solani and Alternaria solani. Int J Biol Macromol 2024; 268:131702. [PMID: 38643917 DOI: 10.1016/j.ijbiomac.2024.131702] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 04/13/2024] [Accepted: 04/18/2024] [Indexed: 04/23/2024]
Abstract
Chitosan-based nanocomposites (CS NCs) are gaining considerable attention as multifaceted antifungal agents. This study investigated the antifungal activity of NCs against two phytopathogenic strains: Fusarium solani (F. solani) and Alternaria solani (A. solani). Moreover, it sheds light on their underlying mechanisms of action. The NCs, CS-ZnO, CS-CuO, and CS-SiO2, were characterized using advanced methods. Dynamic and electrophoretic light scattering techniques revealed their size range (60-170 nm) and cationic nature, as indicated by the positive zeta potential values (from +16 to +22 mV). Transmission electron microscopy revealed the morphology of the NCs as agglomerates formed between the chitosan and oxide components. X-ray diffraction patterns confirmed crystalline structures with specific peaks indicating their constituents. Antifungal assessments using the agar diffusion technique demonstrated significant inhibitory effects of the NCs on both fungal strains (1.5 to 4-fold), surpassing the performance of the positive control, nystatin. Notably, the NCs exhibited superior antifungal potency, with CS-ZnO NCs being the most effective. A. solani was the most sensitive strain to the studied agents. Furthermore, the tested NCs induced oxidative stress in fungal cells, which elevated stress biomarker levels, such as superoxide dismutase (SOD) activity and protein carbonyl content (PCC), 2.5 and 6-fold for the most active CS-CuO in F. solani respectively. Additionally, they triggered membrane lipid peroxidation up to 3-fold higher compared to control, a process that potentially compromises membrane integrity. Laurdan fluorescence spectroscopy highlighted alterations in the molecular organization of fungal cell membranes induced by the NCs. CS-CuO NCs induced a membrane rigidifying effect, while CS-SiO2 and CS-ZnO could rigidify membranes in A. solani and fluidize them in F. solani. In summary, this study provides an in-depth understanding of the interactions of CS-based NCs with two fungal strains, showing their antifungal activity and offering insights into their mechanisms of action. These findings emphasize the potential of these NCs as effective and versatile antifungal agents.
Collapse
Affiliation(s)
- Ekaterina Krumova
- Institute of Microbiology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria.
| | - Dayana Benkova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Galina Stoyancheva
- Institute of Microbiology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | | | - Jeny Miteva-Staleva
- Institute of Microbiology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Aneliya Kostadinova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria.
| | - Kamen Ivanov
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria; Institute of Electronics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
| | - Kh El-Sayed
- Faculty of Engineering, Galala University, Attaka 51745, Suez, Egypt; Nanotechnology and Advanced Materials Central Lab, Agricultural Research Center, Giza 12619, Egypt; Regional Center for Food and Feed, Agricultural Research Center, Giza 12619, Egypt
| | - Galya Staneva
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria.
| | - Hisham A Elshoky
- Nanotechnology and Advanced Materials Central Lab, Agricultural Research Center, Giza 12619, Egypt; Regional Center for Food and Feed, Agricultural Research Center, Giza 12619, Egypt; Tumor Biology Research Program, Department of Research, Children's Cancer Hospital, Cairo 11441, Egypt.
| |
Collapse
|
2
|
Mohamed SY, Elshoky HA, El-Sayed NM, Fahmy HM, Ali MA. Ameliorative effect of zinc oxide-chitosan conjugates on the anticancer activity of cisplatin: Approach for breast cancer treatment. Int J Biol Macromol 2024; 257:128597. [PMID: 38056740 DOI: 10.1016/j.ijbiomac.2023.128597] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 12/08/2023]
Abstract
Breast cancer is the second most prevalent cancer affecting both males and females, comprising nearly 30 % of all cancer cases. While chemotherapeutic agents, such as cisplatin (Cis), have proven successful in cancer treatment, concerns persist regarding their efficacy and the potentially dangerous side effects. Consequently, there is a crucial and ongoing need to develop approaches that minimize side effects associated with chemotherapy. In the present work, various types of nanoparticles (NPs) were synthesized and loaded with Cis. Cis was conjugated with nanocarriers such as zinc oxide (ZnO), ZnO modified with mandelic acid and graphene oxide (GO), chitosan (CS), and CS modified with ZnO and GO to enhance the selectivity of Cis towards cancer cells. Zeta potentials and particles size were assessed using electrophoretic light scattering and dynamic light scattering. NPs were characterized using transmission electron microscopy, Fourier-transform infrared spectroscopy, and X-ray diffraction. The impact of standalone Cis as well as its nanoconjugated form on the behavior of MCF-7 cell line was investigated using WST-1 cell proliferation and apoptosis/necrosis assays. Experimental findings revealed that among the various NPs tested, ZnO, and CS NPs exhibited the highest loading percentage of Cis, surpassing the loading percentages achieved with other NPs. Cytotoxicity assay showed the enhanced effect of Cis when conjugated with ZnO and CS NPs. Flow cytometry-based assays and confocal microscopy confirmed that ZnO/Cis and CS/Cis induced apoptosis. The cisplatin-nanocomplex exhibited a descending order of early apoptosis and late apoptosis in the following order: ZnO, Cis, CS, ZnO-M, CS-GO, ZnO-GO, CS-ZnO, and CS-ZnO, Cis, CS, CS-GO, ZnO-M, ZnO, ZnO-GO, respectively. None of the nanoparticle complexes displayed a significant percentage of necrotic cells, with the highest percentage reaching 4.65 % in the case of CS-GO/Cis.
Collapse
Affiliation(s)
- Salma Y Mohamed
- Biophysics Department, Faculty of Science, Cairo University, Giza 12613, Egypt.
| | - Hisham A Elshoky
- Tumor Biology Research Program, Department of Research, Children's Cancer Hospital Egypt 57357, Cairo 11441, Egypt; Nanotechnology and Advanced Materials Central Lab., Agricultural Research Center, Giza 12619, Egypt; Regional Center for Food and Feed, Agricultural Research Center, Giza 12619, Egypt.
| | - Nayera M El-Sayed
- Physics Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt.
| | - Heba M Fahmy
- Biophysics Department, Faculty of Science, Cairo University, Giza 12613, Egypt.
| | - Maha A Ali
- Biophysics Department, Faculty of Science, Cairo University, Giza 12613, Egypt.
| |
Collapse
|
3
|
Milad SS, Ali SE, Attia MZ, Khattab MS, El-Ashaal ES, Elshoky HA, Azouz AM. Enhanced immune responses in dexamethasone immunosuppressed male rats supplemented with herbal extracts, chitosan nanoparticles, and their conjugates. Int J Biol Macromol 2023; 250:126170. [PMID: 37573907 DOI: 10.1016/j.ijbiomac.2023.126170] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 07/20/2023] [Accepted: 08/04/2023] [Indexed: 08/15/2023]
Abstract
Nowadays, the world is challenged with highly contagious diseases, one of their preliminary virulence mechanisms is the suppression of innate immunity. Therefore, promoting natural immunity is a good precautionary strategy. we investigated and compared the effects of several natural herbal extracts -Moringa oleifera, Ziziphus spina christi, and Saussurea costus, and chitosan nanoparticles (CS NPs)- as well as conjugated extracts with CS NPs on the immunological parameters of dexamethasone immunosuppressed (IS) male rats. The plant extracts were assessed for total flavonoids, phenolics, and antioxidant activity. The CS NPs and their conjugates were characterized using particles size, zeta potentials, and Fourier-transform infrared spectroscopy analyses. The chemical analysis of the plant extracts, CS NPs, and their conjugates was performed using energy dispersive X-ray fluorescence, and their cytotoxicity was evaluated in human lung fibroblast (WI-38) and human embryonic kidney (HEK-293) cell lines. For in vivo evaluations, 72 adult male rats were divided into 9 groups: control, IS, three plant extracts, CS, and conjugates of the three plant extracts and CS NPs. Oral supplementation (day after day) lasted for 28 days. Liver, kidney, and spleen tissue samples were collected for histopathology and Ki-67 expression analyses. The results revealed that the plant extracts and CS improved the total leukocyte counts, complement 3, complement 4, interferon-gamma, and tumor necrosis factor levels at day 28. However, the plant extract-CS NPs conjugates faster and have higher immunostimulatory effects at day 14. Furthermore, the atrophied white pulp of the spleen induced by dexamethasone was alleviated, and Ki-67 expression was elevated in all the treated groups. Conclusively, the conjugates of Moringa oleifera, Ziziphus spina christi, and Saussurea costus extract with CS NPs demonstrated more potent and rapid immune responses at lower doses and concentrations compared to the plant extracts or CS NPs alone, without causing liver or kidney injuries. Thus, supplementation of these conjugated plant extracts at lower doses and concentrations is recommended to improve immunity while considering safety considerations.
Collapse
Affiliation(s)
- Selvia S Milad
- Physiology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
| | - Sara E Ali
- Physiology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
| | - Mahmoud Z Attia
- Physiology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
| | - Marwa S Khattab
- Pathology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
| | - Eman S El-Ashaal
- Nanotechnology and Advanced Material Central Lab, Agriculture Research Center, Egypt; Regional Center for Food and Feed, Agricultural Research Center, Giza, Egypt
| | - Hisham A Elshoky
- Nanotechnology and Advanced Material Central Lab, Agriculture Research Center, Egypt; Regional Center for Food and Feed, Agricultural Research Center, Giza, Egypt; Tumor Biology Research Program, Department of Research, Children's Cancer Hospital Egypt 57357, P.O Box 11441, 1 Seket Al-Emam Street, Cairo, Egypt.
| | - Afaf M Azouz
- Physiology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
| |
Collapse
|
4
|
El-Sayed NM, El-Bakary MA, Ibrahim MA, Elgamal MA, ElZorkany HE, Elshoky HA. Synthesis and characterization of mussel-inspired nanocomposites based on dopamine-chitosan-iron oxide for wound healing: In vitro study. Int J Pharm 2023; 632:122538. [PMID: 36586630 DOI: 10.1016/j.ijpharm.2022.122538] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 09/26/2022] [Revised: 12/18/2022] [Accepted: 12/20/2022] [Indexed: 12/29/2022]
Abstract
There are many challenges faced the soft tissue adhesives in the medical application field. For example, there is a limited effective binding between the medical adhesive and different types of soft tissues. Chitosan (CS) and dopamine (DA) were used as structural units for synthesizing nanocomposites utilized as a wet tissue adhesive. To produce dopamine-chitosan-iron oxide nanocomposites (DA-CS-Fe3O4 NCs), DA was loaded onto chitosan-iron oxide nanocomposites. The nanocomposites have been prepared using ionic gelation method under vigorous homogenization and characterized by different techniques. Fourier-transform infrared spectroscopy (FTIR) have shown that DA-CS- Fe3O4 NCs could attach to the tissue through two possible functional groups, namely, the catechol and amine groups. The results of in vitro scratch wound-healing assay suggested that the prepared DA-CS- Fe3O4 NCs facilitate cell migration (the wound-closure percentage reached 96% at 72 h). All experimental results confirm that DA-CS- Fe3O4 NCs are strongly recommended for use as a soft medical tissue adhesive in wound healing and surgeries such as vascular surgery. In addition, the results of the whole blood clotting, antibacterial assessment, live and dead assay, cytotoxicity test, and wound-healing assay indicate that DA-CS-Fe3O4 NCs can be used as a multifunctional biomedical adhesive.
Collapse
Affiliation(s)
- Nayera M El-Sayed
- Physics Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Mohammed A El-Bakary
- Physics Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Medhat A Ibrahim
- Molecular Spectroscopy and Modeling Unit, Spectroscopy Department, National Research Centre, Giza 12622, Egypt
| | - Mohamed A Elgamal
- Congenital and Pediatric Cardiac Surgery, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Heba ElSayed ElZorkany
- Nanotechnology and Advanced Materials Central Lab. (NAMCL), Agricultural Research Center, Giza, Egypt; Regional Center for Food and Feed, Agricultural Research Center, Giza, Egypt
| | - Hisham A Elshoky
- Nanotechnology and Advanced Materials Central Lab. (NAMCL), Agricultural Research Center, Giza, Egypt; Regional Center for Food and Feed, Agricultural Research Center, Giza, Egypt; Tumor Biology Research Program, Basic Research Unit, Department of Research, Children's Cancer Hospital Egypt 57357, Cairo 11441, Egypt.
| |
Collapse
|
5
|
Ramzy A, ElSafy S, Elshoky HA, Soliman A, Youness R, Mansour S, Sebak A. Drugless nanoparticles tune-up an array of intertwined pathways contributing to immune checkpoint signaling and metabolic reprogramming in triple-negative breast cancer. Biomed Mater 2022; 18. [PMID: 36541457 DOI: 10.1088/1748-605x/aca85d] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 12/02/2022] [Indexed: 12/03/2022]
Abstract
Metabolic reprogramming 'Warburg effect' and immune checkpoint signaling are immunosuppressive hallmarks of triple-negative breast cancer (TNBC) contributing to the limited clinical applicability of immunotherapy. Biomaterials arise as novel tools for immunomodulation of the tumor microenvironment that can be used alongside conventional immunotherapeutics. Chitosan and lecithin are examples of versatile biomaterials with interesting immunomodulatory properties. In this study, we aimed at investigation of the role of carefully designed hybrid nanoparticles (NPs) on common mediators of both programmed death ligand 1 (PD-L1) expression and glycolytic metabolism. Hybrid lecithin-chitosan NPs were prepared and characterized. Their intracellular concentration, localization and effect on the viability of MDA-MB-231 cells were assessed. Glycolytic metabolism was quantified by measuring glucose consumption, adenosine triphosphate (ATP) generation, lactate production and extracellular acidification. Nitric oxide production was quantified using Greiss reagent. Gene expression of inducible nitric oxide synthase (iNOS), phosphatidylinositol-3-kinase (PI3K), protein kinase B (PKB or Akt), mammalian target of rapamycin (mTOR), hypoxia-inducible factor 1α(HIF-1α) and PD-L1 was quantified by quantitative reverse transcription polymerase chain reaction (q-RT-PCR). Chitosan, lecithin and the NPs-formulated forms have been shown to influence the 'Warburg effect' and immune checkpoint signaling of TNBC cells differently. The composition of the hybrid systems dictated their subcellular localization and hence the positive or negative impact on the immunosuppressive characteristics of TNBC cells. Carefully engineered hybrid lecithin-chitosan NPs could convert the immune-suppressive microenvironment of TNBC to an immune-active microenvironment via reduction of PD-L1 expression and reversal of the Warburg effect.
Collapse
Affiliation(s)
- Asmaa Ramzy
- Department of Pharmaceutical Technology, Faculty of Pharmacy & Biotechnology, The German University in Cairo, New Cairo 11835, Egypt.,Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, AUC Avenue, New Cairo 11835, Egypt
| | - Sara ElSafy
- Department of Pharmaceutical Technology, Faculty of Pharmacy & Biotechnology, The German University in Cairo, New Cairo 11835, Egypt
| | - Hisham A Elshoky
- Nanotechnology and Advanced Materials Central Lab. (NAMCL), Agricultural Research Center, Giza, Egypt.,Regional Center for Food and Feed, Agricultural Research Center, Giza, Egypt.,Department of Research, Tumor Biology Research Program, Basic Research Unit, Children's Cancer Hospital Egypt 57357, Cairo 11441, Egypt
| | - Aya Soliman
- Department of Pharmaceutical Biology, Faculty of Pharmacy & Biotechnology, The German University in Cairo, New Cairo 11835, Egypt
| | - Rana Youness
- Department of Pharmaceutical Biology, Faculty of Pharmacy & Biotechnology, The German University in Cairo, New Cairo 11835, Egypt.,Department of Biology and Biochemistry, School of Life and Medical Sciences, University of Hertfordshire Hosted by Global Academic Foundation, New Administrative Capital, Cairo 11578, Egypt
| | - Samar Mansour
- Department of Pharmaceutical Technology, Faculty of Pharmacy & Biotechnology, The German University in Cairo, New Cairo 11835, Egypt
| | - Aya Sebak
- Department of Pharmaceutical Technology, Faculty of Pharmacy & Biotechnology, The German University in Cairo, New Cairo 11835, Egypt.,Immunopharmacology of Cancer, School of Pharmaceutical Sciences, University of Geneva, Geneva 1211, Switzerland
| |
Collapse
|
6
|
Ivanova IA, Pavlova EL, Kostadinova AS, Toshkovska RD, Yocheva LD, El-Sayed K, Hassan MA, El-Zorkany HES, Elshoky HA. Investigation of Biological and Prooxidant Activity of Zinc Oxide Nanoclusters and Nanoparticles. Acta Chim Slov 2022; 69:722-733. [DOI: 10.17344/acsi.2021.7337] [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] [Received: 12/23/2021] [Revised: 07/07/2022] [Accepted: 08/13/2022] [Indexed: 11/19/2022] Open
Abstract
Zinc oxide (ZnO) nanomaterials offer some promising antibacterial effects. In this study, a new form of ZnO is synthesized, named ZnO nanocluster bars (NCs). Herein, ZnO NCs, ZnO nanoparticles (NPs), ZnO coated with silica (ZnOSiOA, ZnO-SiOB), and SiO2 NPs were prepared, characterized, and their antimicrobial and prooxidant activity were tested. The prooxidant activity of all nanomaterials was studied according to free-radical oxidation reactions (pH 7.4 and pH 8.5) in chemiluminescent model systems. Each form of new synthesized ZnO nanomaterials exhibited a unique behavior that varied from mild to strong prooxidant properties in the Fenton`s system. ZnO NPs and ZnO NCs showed strong antibacterial effects, ZnO-SiOA NPs did not show any antibacterial activity representing biocompatibility. All tested NMs also underwent oxidation by H2O2. ZnO NCs and ZnO NPs exhibited strong oxidation at pH 8.5 in the O2 –. generating system. While, SiO2, ZnO-SiOA and ZnO-SiOB possessed pronounced 60–80% antioxidant effects, SiO2 NPs acted as a definitive prooxidant which was not observed in other tests. ZnO NCs are strongly oxidized, assuming that ZnO NCs provide a slower release of ZnO, which leads to having a stronger effect on bacterial strains. Thus, ZnO NCs are an important antibacterial agent that could be an emergent replacement of traditional antibiotics.
Collapse
|
7
|
Abd El-Aziz WR, Ibrahim H, Elzorkany HE, Mohammed GM, Mikhael CA, Fathy NA, Elshoky HA. Evaluation of cell-mediated immunity of E.coli nanovaccines in chickens. J Immunol Methods 2022; 506:113280. [DOI: 10.1016/j.jim.2022.113280] [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] [Received: 09/11/2021] [Revised: 03/14/2022] [Accepted: 05/10/2022] [Indexed: 10/18/2022]
|
8
|
ElZorkany HE, Farroh KY, El-Shorbagy HM, Elshoky HA, Youssef T, Salaheldin TA, Sabet S. Silica-coated graphene compared to Si-CdSe/ZnS quantum dots: toxicity, emission stability, and role of silica in the uptake process for imaging purposes. Photodiagnosis Photodyn Ther 2022; 39:102919. [DOI: 10.1016/j.pdpdt.2022.102919] [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] [Received: 03/14/2022] [Revised: 04/29/2022] [Accepted: 05/17/2022] [Indexed: 10/18/2022]
|
9
|
Elshoky HA, Yotsova E, Farghali MA, Farroh KY, El-Sayed K, Elzorkany HE, Rashkov G, Dobrikova A, Borisova P, Stefanov M, Ali MA, Apostolova E. Impact of foliar spray of zinc oxide nanoparticles on the photosynthesis of Pisum sativum L. under salt stress. Plant Physiol Biochem 2021; 167:607-618. [PMID: 34464827 DOI: 10.1016/j.plaphy.2021.08.039] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 01/31/2021] [Revised: 08/08/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
This study investigates the impacts of zinc oxide nanoparticles: bare (ZnO NPs) and ZnO NPs coated with silicon shell (ZnO-Si NPs), on Pisum sativum L. under physiological and salt stress conditions. The experimental results revealed that the foliar spray with ZnO-Si NPs and 200 mg/L ZnO NPs did not influence the stomata structure, the membrane integrity, and the functions of both photosystems under physiological conditions, while 400 mg/L ZnO-Si NPs had beneficial effects on the effective quantum yield of photosystem II (PSII) and the photochemistry of photosystem I (PSI). On the contrary, small phytotoxic effects were registered after spraying with 400 mg/L ZnO NPs accompanied by stimulation of the cyclic electron flow around PSI and an increase of the non-photochemical quenching (NPQ). The results also showed that both types of NPs (with exception of 400 mg/L ZnO NPs) decrease the negative effects of 100 mM NaCl on the photochemistry of PSI (P700 photooxidation) and PSII (qp, Fv/Fm, Fv/Fo, ΦPSII, Φexc), as well as on the pigment content, stomata closure and membrane integrity. The protective effect was stronger after spraying with ZnO-Si NPs in comparison to ZnO NPs, which could be due to the presence of Si coating shell. The role of Si shell is discussed.
Collapse
Affiliation(s)
- Hisham A Elshoky
- Nanotechnology and Advanced Materials Central Lab, Agricultural Research Center, Giza, Egypt; Regional Center for Food and Feed, Agricultural Research Center, Giza, Egypt
| | - Ekaterina Yotsova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Mohamed A Farghali
- Nanotechnology and Advanced Materials Central Lab, Agricultural Research Center, Giza, Egypt; Nanotechnology Research Center, British University in Egypt, Egypt
| | - Khaled Y Farroh
- Nanotechnology and Advanced Materials Central Lab, Agricultural Research Center, Giza, Egypt; Regional Center for Food and Feed, Agricultural Research Center, Giza, Egypt
| | - Kh El-Sayed
- Nanotechnology and Advanced Materials Central Lab, Agricultural Research Center, Giza, Egypt; Nanotechnology Research Center, British University in Egypt, Egypt
| | - Heba Elsayed Elzorkany
- Nanotechnology and Advanced Materials Central Lab, Agricultural Research Center, Giza, Egypt; Regional Center for Food and Feed, Agricultural Research Center, Giza, Egypt
| | - George Rashkov
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Anelia Dobrikova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Preslava Borisova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Martin Stefanov
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Maha Anwar Ali
- Biophysics Department, Faculty of Sciences, Cairo University, Giza, Egypt
| | - Emilia Apostolova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria.
| |
Collapse
|
10
|
Mohammed GM, ElZorkany HE, Farroh KY, Abd El-Aziz WR, Elshoky HA. Potential improvement of the immune response of chickens against E. coli vaccine by using two forms of chitosan nanoparticles. Int J Biol Macromol 2020; 167:395-404. [PMID: 33275976 DOI: 10.1016/j.ijbiomac.2020.11.200] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/20/2020] [Accepted: 11/29/2020] [Indexed: 01/21/2023]
Abstract
Colibacillosis disease has an important economic impact on poultry production worldwide. It is one of the most common causes of mortality in commercial layer and breeder chickens. Avian pathogenic Escherichia coli (APEC) is the main cause of this disease. Nanoparticles have been widely used in vaccine design as both adjuvants and antigen delivery vehicles. The present study aimed to produce an efficient vaccine from E. coli serogroups O1 and O78 to help in controlling colibacillosis in chicken using two forms of chitosan (CS) and ascorbate chitosan (AsCS) nanoparticles. Nanovaccines has been prepared through loading and encapsulation of outer membrane and flagellar antigen on CS and AsCS nanoparticles with loading efficiency 86, 63,55, 48% for CS-loaded-, Cs-capsulated-, AsCS-loaded- and AsCS-capsulated-E. coli Antigen, respectively. Two hundred specific pathogens free (SPF) 3-weeks old broiler chickens were used and divided into four groups to investigate the immune response of nanovaccines. The immune response was measured by the microagglutination, ELISA, and challenge test. From results, it could be concluded that generally adding chitosan NPs is capable of improving vaccine efficacy via the induction of strong immunity. Moreover, we recommend the production of the nanovaccine CS-capsulated -antigen from E. coli O1 and O78 serotypes to be used as a potent vaccine to aid in controlling colibacillosis. Also, the ascorbate chitosan is a great alternate for the initiation of a potent immune response in critical infection cases.
Collapse
Affiliation(s)
- Gina M Mohammed
- Central Laboratory for Evaluation of Veterinary Biologics, Agricultural Research Center, Egypt
| | - Heba ElSayed ElZorkany
- Nanotechnology and Advanced Materials Central Lab, Agricultural Research Center, Giza, Egypt; Regional Center for Food and Feed, Agricultural Research Center, Giza, Egypt
| | - Khaled Y Farroh
- Nanotechnology and Advanced Materials Central Lab, Agricultural Research Center, Giza, Egypt; Regional Center for Food and Feed, Agricultural Research Center, Giza, Egypt
| | - Wafaa R Abd El-Aziz
- Department of Antigens and Sera, Veterinary Serum and Vaccine Research Institute, Agricultural Research Center, Egypt
| | - Hisham A Elshoky
- Nanotechnology and Advanced Materials Central Lab, Agricultural Research Center, Giza, Egypt; Regional Center for Food and Feed, Agricultural Research Center, Giza, Egypt.
| |
Collapse
|
11
|
Elzorkany HE, Farghali MA, Hassan MA, El-Sayed K, Canonico M, Konert G, Farroh K, Elshoky HA, Kaňa R. Ecotoxicology impact of silica-coated CdSe/ZnS quantum dots internalized in Chlamydomonas reinhardtii algal cells. Sci Total Environ 2019; 666:480-489. [PMID: 30802663 DOI: 10.1016/j.scitotenv.2019.02.274] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/11/2019] [Accepted: 02/17/2019] [Indexed: 06/09/2023]
Abstract
The use of quantum dots (QD) in various medical and industrial applications may cause these nanoparticles to leak into waterways and subsequently enter the food chain. Therefore, if we intend to use QD, we must first know their potential environmental implications. In this work, cadmium selenide/zinc sulfide core/shell QD were synthesized, and then, biocompatible, water-dispersed QD were coated with silica (Si-QD). The QD were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM) combined with energy-dispersive X-ray spectroscopy (EDX), and UV-Vis absorption analysis, which revealed that these surface-engineered QD have a highly crystalline, homogeneous spherical shape measuring approximately 25 nm. The cytotoxicity of the nanoparticles in the green algae Chlamydomonas reinhardtii was studied by incubating the algae cells with Si-QD and determining the optical density of algal cell culture, cell counts, and cells sizes by microflow cytometry. These measurements indicated that Si-QD are biocompatible up to a concentration of 25 ng/ml. Finally, the cellular uptake of Si-QD into C. reinhardtii was monitored by confocal laser scanning microscopy (CLSM). In conclusion, our results reveal that surface-engineered Cd-QD can penetrate the cells of aquatic organisms, which ensures a serious impact on the food chain and consequently the environment. On the other hand, the results also highlight a new potential method for bioremediation of Cd-QD by green algae, especially C. reinhardtii.
Collapse
Affiliation(s)
- Heba Elsayed Elzorkany
- Nanotechnology and Advanced Materials Central Lab. (NAMCL), Agriculture Research Center, Giza, Egypt.
| | - Mohamed A Farghali
- Nanotechnology and Advanced Materials Central Lab. (NAMCL), Agriculture Research Center, Giza, Egypt
| | - Mohamed A Hassan
- Nanotechnology and Advanced Materials Central Lab. (NAMCL), Agriculture Research Center, Giza, Egypt
| | - Kh El-Sayed
- Nanotechnology and Advanced Materials Central Lab. (NAMCL), Agriculture Research Center, Giza, Egypt
| | - Myriam Canonico
- Institute of Microbiology, CAS, Centrum Algatech, Třeboň, Czech Republic; Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Grzegorz Konert
- Institute of Microbiology, CAS, Centrum Algatech, Třeboň, Czech Republic
| | - Khaled Farroh
- Nanotechnology and Advanced Materials Central Lab. (NAMCL), Agriculture Research Center, Giza, Egypt
| | - Hisham A Elshoky
- Nanotechnology and Advanced Materials Central Lab. (NAMCL), Agriculture Research Center, Giza, Egypt.
| | - Radek Kaňa
- Institute of Microbiology, CAS, Centrum Algatech, Třeboň, Czech Republic; Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic.
| |
Collapse
|
12
|
Mohamed MM, Fouad SA, Elshoky HA, Mohammed GM, Salaheldin TA. Antibacterial effect of gold nanoparticles against Corynebacterium pseudotuberculosis. Int J Vet Sci Med 2017; 5:23-29. [PMID: 30255044 PMCID: PMC6137858 DOI: 10.1016/j.ijvsm.2017.02.003] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [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: 01/04/2017] [Revised: 02/03/2017] [Accepted: 02/13/2017] [Indexed: 01/02/2023] Open
Abstract
Corynebacterium pseudotuberculosis is the etiological agent of chronic caseous lymphadenitis. The bacterium infects goats and sheep causing great economic loss worldwide annually. The present work aims to evaluate the efficiency of gold nanoparticles (AuNPs) and AuNPs – laser combined therapy as antibacterial approaches against C. pseudotuberculosis bacteria in vitro. Gold nanoparticles 25 nm were synthesized by co-precipitation method and characterized by different techniques including; Transmission Electron Microscope (TEM), X-ray Diffraction and Dynamic Light Scattering. Three concentrations of AuNPs (50, 100 and 200 μg/mL) were utilized for estimating the bacterial growth rate and the Minimum Inhibitory Concentration (MIC). The mechanism of interaction between AuNPs and bacteria was evaluated by transmission electron microscopic image analysis. Confocal Laser Scanning Microscopic technique was used to study the cytotoxic action of AuNPs and laser against C. psudotuberculosis. Results revealed that MIC of AuNPs and AuNPs – laser combined therapy were 200 μg/mL and 100 μg/mL respectively. TEM image analysis illustrated that gold nanoparticles penetrated the thick wall of C. psudotuberculosis and accumulated as intracellular agglomerates. Laser light enhanced the antimicrobial activity of gold nanoparticles by at least one fold due to its photo thermal combined effect that might be used as an effective antibacterial approach against C. pseudotuberculosis.
Collapse
Affiliation(s)
- Marwah M Mohamed
- Department of Bacterial Diagnostic Products, Veterinary Serum and Vaccine Research Institute, Egypt
| | - Shereen A Fouad
- Department of Bacterial Diagnostic Products, Veterinary Serum and Vaccine Research Institute, Egypt
| | - Hisham A Elshoky
- Nanotechnology and Advanced Material Central Lab, Agriculture Research Center, Egypt
| | - Gina M Mohammed
- Central Laboratory for Evaluation Veterinary Biologics, Agriculture Research Center, Egypt
| | - Taher A Salaheldin
- Nanotechnology and Advanced Material Central Lab, Agriculture Research Center, Egypt.,Mostafa Elsayed Nanotechnology Research Centre, British University in Egypt, Egypt
| |
Collapse
|