151
|
Erdem HB, Çetinkaya S. Facile insitu preparation of silver nanoparticles supported on petroleum asphaltene-derived porous carbon for efficient reduction of nitrophenols. Heliyon 2022; 8:e10659. [PMID: 36158083 PMCID: PMC9493068 DOI: 10.1016/j.heliyon.2022.e10659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 07/30/2022] [Accepted: 09/09/2022] [Indexed: 11/17/2022] Open
Abstract
Herein, a facile in situ approach to synthesize catalytically active Ag nanoparticles supported on eco-friendly asphaltene-derived porous carbon (APC) was reported. Asphaltene-derived porous carbon was used as support for the first time for Ag@APC to prevent nanoparticles from aggregation, and then was evaluated as catalyst for the reduction of 4-nitrophenol (PNP), 2,4-dinitrophenol (DNP), and 2,4,6-trinitrophenol (TNP). The synthesized Ag nanoparticles were characterized by XRD, UV, BET, FESEM, TEM, and ICP analyses, revealing the formation of uniformly distributed, fcc structured crystalline Ag nanoparticles with BET surface area varied between 1500 and 1723 cm−1 with a porous carbon surface. Ag@APC nanocatalyst showed high catalytic efficiency in the reduction of nitrophenols in the presence of NaBH4 under mild conditions. The reduction of PNP, DNP, and TNP have pseudo-first-order rate constants of 0.3340, 0.2570, and 0.2408 min−1, respectively. The catalyst could be recyclable and reused for at least five successive runs without losing its original activity. Asphaltene-derived porous carbon (APC) was used as a support for Ag nanocatalyst (Ag@APC) for the first time. Facile in-situ preparation of Ag@APC catalyst. High catalytic efficiency (approximately 100%) in the nitrophenol reductions. High stability and reusability of Ag@APC catalyst.
Collapse
Affiliation(s)
- Hikmet Beyza Erdem
- Kırıkkale University, Department of Chemistry, Yahşihan 71450, Kırıkkale, Turkey
| | - Sevil Çetinkaya
- Kırıkkale University, Department of Chemistry, Yahşihan 71450, Kırıkkale, Turkey
| |
Collapse
|
152
|
Kamphorst R, Wu K, Salameh S, Meesters GMH, van Ommen JR. On the fluidization of cohesive powders: Differences and similarities between micro‐ and nano‐sized particle gas–solid fluidization. CAN J CHEM ENG 2022. [DOI: 10.1002/cjce.24615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- R. Kamphorst
- Department of Chemical Engineering Technical University Delft The Netherlands
| | - K. Wu
- Department of Chemical Engineering Technical University Delft The Netherlands
| | - S. Salameh
- Department of Chemical Engineering Fachhochschule Münster Germany
| | - G. M. H. Meesters
- Department of Chemical Engineering Technical University Delft The Netherlands
| | - J. R. van Ommen
- Department of Chemical Engineering Technical University Delft The Netherlands
| |
Collapse
|
153
|
Elbasuney S, El-Sayyad GS, Radwan SM, Correa-Duarte MA. Antimicrobial, and Antibiofilm Activities of Silver Doped Hydroxyapatite: A Novel Bioceramic Material for Dental Filling. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02459-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
AbstractEven though hydroxyapatite (HA) is the most common biocompatible material; it has limited antibacterial resistance. HA experiences a tailor-made structure depending on the desired applications. In this regard, silver (Ag) is of particular interest to inhibit wide spectrum of pathogenic bacteria and other microorganisms. Silver doped hydroxyapatite (Ag-HA) was developed via wet co-precipitation with subsequent hydrothermal processing to hinder the growth and multiplication of pathogenic microbes. Ag-HA demonstrated mono-dispersed nano-rods of 70 nm length and 7 nm diameters. Even though silver dopant induced stresses within the crystal lattice; Ag-HA maintained the crystallographic structure of HA with no change. Ag-HA nanocomposite demonstrated Ca/P value of 1.238 compared with 1.402 for virgin HA via XPS spectroscopy. The reduction of Ca/P value was correlated to the partial replacement of Ca+2 with Ag+1; Silver content was reported to be of 1 atomic %. Elemental mapping using EDAX confirmed uniform dispersion of silver ion within HA lattice. Antimicrobial results indicated that, Ag-HA nanocomposite demonstrated the most potent zone of inhibition (ZOI) against Staphylococcus aureus, and Candida albicans. Antibiofilm results indicated that Ag-HA nanocomposite at 10.0 µg/mL, experienced the highest percentage for S. aureus and C. albicans of 96.09%, and 77.77%, respectively. Ag-HA nanocomposite demonstrated an excellent disinfectant agent once it had excited by UV light. In growth curve assay, the OD600 value of Ag- HA were lower, showing the repression impact on the growth of S. aureus. It was observed that the quantity of cellular protein discharged from S. aureus is directly proportional to the concentration of Ag-HA, which proves the antibacterial characteristics of the Ag-HA nanocomposite, and explains the creation of holes in the bacterial membrane producing the oozing out of the proteins from the S. aureus cytoplasm. Ag-HA nanocomposite achieved the complete lysis of the bacterial cell and cell malformation, decreasing the total viable number, so the outstanding antimicrobial results encouraged the tooth filling biomedical applications.
Graphical Abstract
Collapse
|
154
|
“Soft Protein Corona” as the Stabilizer of the Methionine-Coated Silver Nanoparticles in the Physiological Environment: Insights into the Mechanism of the Interaction. Int J Mol Sci 2022; 23:ijms23168985. [PMID: 36012248 PMCID: PMC9409063 DOI: 10.3390/ijms23168985] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 08/08/2022] [Accepted: 08/10/2022] [Indexed: 11/17/2022] Open
Abstract
The study of the interactions between nanoparticles (NPs) and proteins has had a pivotal role in facilitating the understanding of biological effects and safe application of NPs after exposure to the physiological environment. Herein, for the first time, the interaction between L-methionine capped silver nanoparticles (AgMet), and bovine serum albumin (BSA) is investigated in order to predict the fate of AgMet after its contact with the most abundant blood transport protein. The detailed insights into the mechanism of interaction were achieved using different physicochemical techniques. The UV/Vis, TEM, and DLS were used for the characterization of the newly formed “entity”, while the kinetic and thermodynamic parameters were utilized to describe the adsorption process. Additionally, the fluorescence quenching and synchronous fluorescence studies enabled the prediction of the binding affinity and gave us insight into the influence of the adsorption on the conformation state of the BSA. According to the best of our knowledge, for the first time, we show that BSA can be used as an external stabilizer agent which is able to induce the peptization of previously agglomerated AgMet. We believe that the obtained results could contribute to further improvement of AgNPs’ performances as well as to the understanding of their in vivo behavior, which could contribute to their potential use in preclinical research studies.
Collapse
|
155
|
Mahmud KM, Hossain MM, Polash SA, Takikawa M, Shakil MS, Uddin MF, Alam M, Ali Khan Shawan MM, Saha T, Takeoka S, Hasan MA, Sarker SR. Investigation of Antimicrobial Activity and Biocompatibility of Biogenic Silver Nanoparticles Synthesized using Syzigyum cymosum Extract. ACS OMEGA 2022; 7:27216-27229. [PMID: 35967026 PMCID: PMC9366946 DOI: 10.1021/acsomega.2c01922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
Nanotherapeutics has emerged as the most sought after approach to tackle the menace of drug-resistant pathogenic bacteria. Among others, biogenic silver nanoparticles (bAgNPs) synthesized using medicinal plant extracts demonstrate promising antibacterial propensity with excellent biocompatibility. Herein, bAgNPs were synthesized through the green chemistry approach using Syzygium cymosum leaf extract as a reducing agent at different pH values (i.e., 5, 7, 8, and 10). The average size of bAgNPs synthesized at pH 5, 7, 8, and 10 was 23.3, 21.3, 17.2, and 35.3 nm, respectively, and all the nanoparticles were negatively charged. Their antibacterial potential was investigated against Bacillus subtilis, Escherichia coli DH5α, E. coli K12, enteropathogenic E. coli, and Salmonella typhi. The highest antibacterial activity was exhibited by bAgNPs synthesized at pH 8 against all the tested bacterial strains, which can be attributed to their small size and greater surface area to volume ratio. The bAgNPs demonstrated the highest zone of inhibition (29.5 ± 0.8 mm) against B. subtilis through oxidation of membrane fatty acids that resulted in the formation of the malondialdehyde-thiobarbituric acid (MDA-TBA) adduct. However, bAgNPs demonstrated excellent hemocompatibility with rat and human red blood cells. Biogenic AgNPs synthesized at pH 8 also exhibited biocompatibility in terms of liver and kidney function biomarkers. Furthermore, hematoxylin and eosin staining of the tissue sections of vital organs (i.e., liver, kidneys, lungs, heart, spleen, and brain) also confirmed the biocompatibility of bAgNPs.
Collapse
Affiliation(s)
- Kazi Mustafa Mahmud
- Department
of Biochemistry and Molecular Biology, Jahangirnagar
University, Savar, Dhaka 1342, Bangladesh
| | - Md. Monir Hossain
- Department
of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Shakil Ahmed Polash
- Department
of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
- Nano
Biotechnology Research Laboratory (NBRL), School of Science, RMIT University, Melbourne, Victoria 3001, Australia
| | - Masato Takikawa
- Department
of Advanced Science and Engineering, Waseda
University (TWIns), Shinju-ku, Tokyo 162-8480, Japan
| | - Md Salman Shakil
- Department
of Biochemistry and Molecular Biology, Jahangirnagar
University, Savar, Dhaka 1342, Bangladesh
- Department
of Mathematics and Natural Sciences, Brac
University, 66 Mohakhali, Dhaka 1212, Bangladesh
| | - Md Forhad Uddin
- Department
of Biochemistry and Molecular Biology, Jahangirnagar
University, Savar, Dhaka 1342, Bangladesh
| | - Morshed Alam
- Department
of Biochemistry and Molecular Biology, Jahangirnagar
University, Savar, Dhaka 1342, Bangladesh
| | | | - Tanushree Saha
- Department
of Textile Engineering, Dhaka University
of Engineering and Technology, Gazipur 1707, Bangladesh
- School
of Engineering, RMIT University, Melbourne, Victoria 3001, Australia
| | - Shinji Takeoka
- Department
of Life Science and Medical Bioscience, Graduate School of Advance
Science and Engineering, Waseda University
(TWIns), Shinju-ku, Tokyo 162-8480, Japan
| | - Md. Ashraful Hasan
- Department
of Biochemistry and Molecular Biology, Jahangirnagar
University, Savar, Dhaka 1342, Bangladesh
| | - Satya Ranjan Sarker
- Department
of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| |
Collapse
|
156
|
Jagtap RR, Garud A, Puranik SS, Rudrapal M, Ansari MA, Alomary MN, Alshamrani M, Salawi A, Almoshari Y, Khan J, Warude B. Biofabrication of Silver Nanoparticles (AgNPs) Using Embelin for Effective Therapeutic Management of Lung Cancer. Front Nutr 2022; 9:960674. [PMID: 35990347 PMCID: PMC9386231 DOI: 10.3389/fnut.2022.960674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 06/14/2022] [Indexed: 12/27/2022] Open
Abstract
Nanobiotechnology is a burgeoning field of research with applications in cancer treatment, targeted chemotherapy, and molecular diagnosis. This study aims at the fabrication of silver nanoparticles using embelin derived from Embelia ribes to evaluate its anticancer property. Silver nanoparticles (AgNPs) have emerged as a novel nano-carrier for therapeutic agents with a wide range of medical capabilities due to their unique structural, physicochemical, and optical features. In our study, the particle size of fabricated AgNPs was measured as 25 nm, and the zeta potential was recorded as -5.42 mV, which indicates the good stability of embelin-derived AgNPs. The crystalline surface morphology was observed by SEM analysis. The FT-IR spectrum confirmed the reduction in silver ions (Ag+) by embelin, and the TEM analysis exhibited polydispersed Ag+ of 20-30 nm. The anticancer potential of embelin-fabricated AgNPs was investigated using in vitro studies on lung cancer cells by the MTT assay. The results revealed significant dose-dependent inhibition of cell proliferation against A549 cell lines. Embelin AgNP-induced apoptosis was measured by the annexin-V PI apoptosis assay, which exhibited significantly low necrotic cells as compared to apoptotic cells. Finally, the findings of our study suggest the anticancer potential of biofabricated embelin AgNPs, particularly against lung cancer cells.
Collapse
Affiliation(s)
- Rutika R. Jagtap
- Post Graduate Research Centre, Department of Zoology, Modern College of Arts, Science and Commerce, Pune, India
| | - Aniket Garud
- Rasiklal M. Dhariwal Institute of Pharmaceutical Education and Research, Pune, India
| | - Shubhangi S. Puranik
- Post Graduate Research Centre, Department of Zoology, Modern College of Arts, Science and Commerce, Pune, India
| | - Mithun Rudrapal
- Rasiklal M. Dhariwal Institute of Pharmaceutical Education and Research, Pune, India
| | - Mohammad Azam Ansari
- Department of Epidemic Disease Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Mohammad N. Alomary
- National Centre for Biotechnology, King Abdulaziz City for Science and Technology (KACST), Riyadh, Saudi Arabia
| | - Meshal Alshamrani
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Ahmad Salawi
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Yosif Almoshari
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Johra Khan
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Al Majma'ah, Saudi Arabia
- Health and Basic Sciences Research Center, Majmaah University, Al Majma'ah, Saudi Arabia
| | - Bhagyashri Warude
- Rasiklal M. Dhariwal Institute of Pharmaceutical Education and Research, Pune, India
| |
Collapse
|
157
|
Electroless Deposits of ZnO and Hybrid ZnO/Ag Nanoparticles on Mg-Ca0.3 Alloy Surface: Multiscale Characterization. COATINGS 2022. [DOI: 10.3390/coatings12081109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
ZnO and hybrid of ZnO/Ag structures in the nanometer size were electroless deposited on the Mg-Ca0.3 alloy surface, achieved from aqueous solutions (10−3 M at 21 °C) of ZnO (suspension), Zn(NO3)2 and AgNO3. The surface characterization of the deposits was carried out by Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS), X-Ray Photoelectron Spectroscopy (XPS), Fourier transform infrared (FTIR), UV-Visible and Raman spectroscopy. The nanoparticles (NPs) area size distribution analysis revealed that the average of ZnO-NPs was ~85 nm. Likewise, the Ag-NPs of electroless deposits had an average area size of ~100 nm and nucleated in the vicinity of ZnO-NPs as Ag+ ions have been attracted by the negatively charged O2− atoms of the Zn-O dipole. The ZnO-NPs had the wurtzite structure, as indicated by Raman spectroscopy analysis and XRD complementary analysis. The UV-Visible spectroscopy analysis gave a peak at ~320 nm associated with the decrease in the imaginary part (k) of the refractive index of Ag-NPs. On the Mg-Ca0.3 surface, MgO, Mg(OH)2 and MgCO3 are present due to the Mg-matrix. XRD spectra of Ag-NPs indicated the presence of planes arranged with the FCC hexagonal structure. The reported hybrid ZnO/Ag electroless deposits of NPs are of interest for temporary implant devices, providing antibacterial properties to Mg-Ca0.3 surface, a widely used biodegradable material.
Collapse
|
158
|
Rather MA, Deori PJ, Gupta K, Daimary N, Deka D, Qureshi A, Dutta TK, Joardar SN, Mandal M. Ecofriendly phytofabrication of silver nanoparticles using aqueous extract of Cuphea carthagenensis and their antioxidant potential and antibacterial activity against clinically important human pathogens. CHEMOSPHERE 2022; 300:134497. [PMID: 35398470 DOI: 10.1016/j.chemosphere.2022.134497] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 03/24/2022] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
The green synthesis of nanoparticles (NPs) is the safest, ecofriendly, cost-effective, and non-hazardous approach of nanotechnology. In the current study, we described the green synthesis of silver nanoparticles (AgNPs) using Cuphea carthagenensis aqueous leaf extract as a reducing, capping, and stabilizing agent. The study aims at the synthesis, characterization, optimization, and determination of the antibacterial activity of Cc-AgNPs against clinically important human pathogens. Coating of cotton fabrics with Cc-AgNPs and their efficacy against skin infection causing organisms was also evaluated. Furthermore, antioxidant activity, growth assay and time kill assay of Cc-AgNPs were also performed in the study. The biosynthesized Cc-AgNPs were characterized by UV-visible spectrometry, energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FTIR). The spectroscopic and microscopic analysis demonstrated biosynthesis of face-centered cubic (fcc) crystalline spherical Cc-AgNPs with an average particle size of 10.65 ± 0.1 nm. Optimized peak synthesis of Cc-AgNPs was reported at pH7, 55 °C, 4 mM silver nitrate, and 5:45 (plant extract: silver nitrate). Cc-AgNPs exhibited potent antioxidant effect and antibacterial activity against both Gram-positive and Gram-negative bacteria. The lowest MIC (15 μg/ml) and MBC (25 μg/ml) values were reported against S. typhimurium. The Cc-AgNPs coated fabrics demonstrated potent antibacterial activity against tested strains. This application could be helpful in wound healing management. Furthermore, the hemolytic analysis demonstrated that Cc-AgNPs exhibit non-toxic nature against Red Blood Cells (RBCs) at the tested concentrations. In conclusion, the investigation demonstrated a fast, stable, and eco-friendly approach to the biosynthesis of Cc-AgNPs along with their antibacterial and antioxidant properties.
Collapse
Affiliation(s)
- Muzamil Ahmad Rather
- Department of Molecular Biology and Biotechnology, Tezpur University, Napaam, Tezpur, 784028, Assam, India
| | - Pranab Jyoti Deori
- Department of Molecular Biology and Biotechnology, Tezpur University, Napaam, Tezpur, 784028, Assam, India
| | - Kuldeep Gupta
- Department of Molecular Biology and Biotechnology, Tezpur University, Napaam, Tezpur, 784028, Assam, India
| | - Niran Daimary
- Department of Energy, Tezpur University, Napaam, Tezpur, 784028, Assam, India
| | - Dhanapati Deka
- Department of Energy, Tezpur University, Napaam, Tezpur, 784028, Assam, India
| | - Asifa Qureshi
- Environmental Biotechnology and Genomics Division (EBGD) CSIR-NEERI, Nagpur, 440020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Delhi, India
| | - Tapan Kumar Dutta
- Department of Veterinary Microbiology CVSc & AH, Central Agricultural University Selesih, Aizawl, Mizoram, 796014, India
| | - Siddhartha Narayan Joardar
- Department of Veterinary Microbiology, West Bengal University of Animal & Fishery Sciences 68, K. B. Sarani, Kolkata, 700037, India
| | - Manabendra Mandal
- Department of Molecular Biology and Biotechnology, Tezpur University, Napaam, Tezpur, 784028, Assam, India.
| |
Collapse
|
159
|
Hou DZ, Ling P, Zhu Y, Ouyang YM, Karmakar B. White tea extract modified green synthesis of magnetite supported Ag nanoparticles: evaluation of its catalytic activity, antioxidant and anti-colon cancer effects. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
160
|
Huynh H, Upadhyay P, Lopez CH, Miyashiro MK, Van Winkle LS, Thomasy SM, Pinkerton KE. Inhalation of Silver Silicate Nanoparticles Leads to Transient and Differential Microglial Activation in the Rodent Olfactory Bulb. Toxicol Pathol 2022; 50:763-775. [PMID: 35768951 PMCID: PMC9529873 DOI: 10.1177/01926233221107607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Engineered silver nanoparticles (AgNPs), including silver silicate nanoparticles (Ag-SiO2 NPs), are used in a wide variety of medical and consumer applications. Inhaled AgNPs have been found to translocate to the olfactory bulb (OB) after inhalation and intranasal instillation. However, the biological effects of Ag-SiO2 NPs and their potential nose-to-brain transport have not been evaluated. The present study assessed whether inhaled Ag-SiO2 NPs can elicit microglial activation in the OB. Adult Sprague-Dawley rats inhaled aerosolized Ag-SiO2 NPs at a concentration of 1 mg/ml for 6 hours. On day 0, 1, 7, and 21 post-exposure, rats were necropsied and OB were harvested. Immunohistochemistry on OB tissues were performed with anti-ionized calcium-binding adapter molecule 1 and heme oxygenase-1 as markers of microglial activation and oxidative stress, respectively. Aerosol characterization indicated Ag-SiO2 NPs were sufficiently aerosolized with moderate agglomeration and high-efficiency deposition in the nasal cavity and olfactory epithelium. Findings suggested that acute inhalation of Ag-SiO2 NPs elicited transient and differential microglial activation in the OB without significant microglial recruitment or oxidative stress. The delayed and differential pattern of microglial activation in the OB implied that inhaled Ag-SiO2 may have translocated to the central nervous system via intra-neuronal pathways.
Collapse
Affiliation(s)
- Huong Huynh
- William R Pritchard Veterinary Medical Teaching Hospital, University of California-Davis, Davis, CA, USA.,Center for Health and the Environment, University of California – Davis, Davis, CA, USA
| | - Priya Upadhyay
- Center for Health and the Environment, University of California – Davis, Davis, CA, USA
| | - Cora H Lopez
- Center for Health and the Environment, University of California – Davis, Davis, CA, USA
| | - Malia K Miyashiro
- Center for Health and the Environment, University of California – Davis, Davis, CA, USA
| | - Laura S Van Winkle
- Center for Health and the Environment, University of California – Davis, Davis, CA, USA.,Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California – Davis, Davis, CA, USA
| | - Sara M Thomasy
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California - Davis, Davis, CA, USA.,Department of Ophthalmology and Vision Science, School of Medicine, University of California - Davis, Davis, CA, USA
| | - Kent E Pinkerton
- Center for Health and the Environment, University of California – Davis, Davis, CA, USA.,Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California – Davis, Davis, CA, USA
| |
Collapse
|
161
|
Beaton G, Zacks J, Stamplecoskie K. Al2O3 anchored silver and gold nanoparticles as accessible, stable, and re-usable catalysts. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128972] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
162
|
Lawal SK, Olojede SO, Sulaiman SO, Aladeyelu OS, Moodley R, Naidu ECS, Rennie CO, Azu OO. Tenofovir-silver nanoparticles conjugate ameliorates neurocognitive disorders and protects ultrastructural and cytoarchitectonic properties of the prefrontal cortex in diabetic rats. Bosn J Basic Med Sci 2022; 22:569-579. [PMID: 35122679 PMCID: PMC9392981 DOI: 10.17305/bjbms.2021.6699] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 12/05/2021] [Indexed: 11/16/2022] Open
Abstract
Tenofovir disoproxil fumarate (TDF) is the highly recommended antiretroviral drug in human immunodeficiency virus management. Although research has shown the neurological and metabolic disorders associated with TDF administration, the effect of TDF-silver nanoparticles conjugate (TDF-AgNPs) on the disorders has not been fully elucidated. Thus, this study evaluated the neuroprotective effects of TDF-AgNPs on ultrastructural and cytoarchitectonic properties of the prefrontal cortex (PFC) in diabetic rats. Forty-two adult male Sprague-Dawley rats (250 ± 13 g) were randomly divided into non-diabetic groups (1-3) and diabetic groups (4-6), each administered distilled water (0.5 ml/100g, p.o), TDF (26.8 mg/kg/bw, p.o) or TDF-AgNPs (6.7 mg/kg, i.p). After eight weeks of administration, cognitive function, oxidative injury and tissue inflammation were evaluated. Also, PFC ultrastructure was observed using transmission electron microscopy, Nissl staining and immunohistochemistry. Diabetic rats administered TDF exhibited cognitive deficits; and increases in blood glucose, malondialdehyde and interleukin-1 beta (IL-1β) levels, which correlate with decreases in glutathione level, and superoxide dismutase (SOD) and catalase activities. Furthermore, loss of PFC astrocytes and neuronal organelles was observed. Conversely, TDF-AgNPs administration to diabetic rats improved cognitive deficits; and increased glutathione, SOD, and catalase, but reduced PFC malondialdehyde and IL-1β concentrations. Notably, TDF-AgNPs prevented loss of PFC neurons and astrocytic cells, and morphology aberration of neuronal organelles. This study suggests that TDF-AgNPs attenuated cognitive deficits via silver nanoparticles' antioxidant and anti-inflammatory properties, preventing the loss of PFC astrocytes and neurons. The TDF-AgNPs may be utilized to ameliorate the neurological dysfunction caused by prolonged TDF administration.
Collapse
Affiliation(s)
- Sodiq Kolawole Lawal
- Discipline of Clinical Anatomy, School of Laboratory Medicine and Medical Sciences, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Samuel Oluwaseun Olojede
- Discipline of Clinical Anatomy, School of Laboratory Medicine and Medical Sciences, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Sheu Oluwadare Sulaiman
- Postgraduate Program in Cell Biology and Birbrair Laboratory, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Minas Gerais, Belo Horizonte, Brazil
| | - Okikioluwa Stephen Aladeyelu
- Discipline of Clinical Anatomy, School of Laboratory Medicine and Medical Sciences, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Roshila Moodley
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Durban, South Africa
| | - Edwin C. Stephen Naidu
- Discipline of Clinical Anatomy, School of Laboratory Medicine and Medical Sciences, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Carmen Olivia Rennie
- Discipline of Clinical Anatomy, School of Laboratory Medicine and Medical Sciences, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Onyemaechi Okpara Azu
- Department of Anatomy, School of Medicine, University of Namibia, Windhoek, Private, Namibia
| |
Collapse
|
163
|
Biological Synthesis of Silver Nanoparticles and Prospects in Plant Disease Management. Molecules 2022; 27:molecules27154754. [PMID: 35897928 PMCID: PMC9330430 DOI: 10.3390/molecules27154754] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/18/2022] [Accepted: 07/22/2022] [Indexed: 01/27/2023] Open
Abstract
Exploration of nanoparticles (NPs) for various biological and environmental applications has become one of the most important attributes of nanotechnology. Due to remarkable physicochemical properties, silver nanoparticles (AgNPs) are the most explored and used NPs in wide-ranging applications. Also, they have proven to be of high commercial use since they possess great chemical stability, conductivity, catalytic activity, and antimicrobial potential. Though several methods including chemical and physical methods have been devised, biological approaches using organisms such as bacteria, fungi, and plants have emerged as economical, safe, and effective alternatives for the biosynthesis of AgNPs. Recent studies highlight the potential of AgNPs in modern agricultural practices to control the growth and spread of infectious pathogenic microorganisms since the introduction of AgNPs effectively reduces plant diseases caused by a spectrum of bacteria and fungi. In this review, we highlight the biosynthesis of AgNPs and discuss their applications in plant disease management with recent examples. It is proposed that AgNPs are prospective NPs for the successful inhibition of pathogen growth and plant disease management. This review gives a better understanding of new biological approaches for AgNP synthesis and modes of their optimized applications that could contribute to sustainable agriculture.
Collapse
|
164
|
Biosynthesis of Silver Nanoparticles Using Bersama engleriana Fruits Extracts and Their Potential Inhibitory Effect on Resistant Bacteria. CRYSTALS 2022. [DOI: 10.3390/cryst12071010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The absence of novel, safe, and effective bactericide is an urgent concern worldwide and remains a challenge in scientific communities. The unique proprieties of silver nanoparticles (SNPs) synthesized from plant extracts make them a suitable candidate to overcome these limitations. Herein, we synthesized SNPs from Bersama engleriana fruit (BEfr) extracts and determined their potential antibacterial activity and mode of action. SNPs were synthesized from BEfr methanolic fruit extracts at 25 and 70 °C, and the antibacterial effectiveness of SNPs against bacterial strains was investigated. The surface plasmon resonance peaked at 430.18 and 434.08 nm, respectively, for SNPs synthesized at 25 and 70 °C, confirming SNPs synthesis. BEfr-SNPs had minimum inhibitory concentrations (MIC) range of 0.234 to >50 µg/mL, which was 30-fold greater than extract alone (MIC of 500 µg/mL). BEfr-SNPs-25 °C was potent against six bacterial strains (S. aureus, S. enterica, MRS. aureus, K. pneumonia, and S. pyogenes), with MIC range of 0.339 to 6.25 µg/mL. The mode of action of BEfr-SNPs-25 °C was achieved by an MRSA bacteria strain outer membrane and DNA nucleotide linkage. These results suggest that our synthesized SNPs, especially BEfr-SNPs-25 °C, demonstrated an enhanced antibacterial effect and could be potential candidates for bacterial infection treatment.
Collapse
|
165
|
Jari Litany RI, Praseetha PK. Tiny tots for a big-league in wound repair: Tools for tissue regeneration by nanotechniques of today. J Control Release 2022; 349:443-459. [PMID: 35835401 DOI: 10.1016/j.jconrel.2022.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/01/2022] [Accepted: 07/04/2022] [Indexed: 12/13/2022]
Abstract
Overall, chronic injuries place considerable burden on patients and health systems. The skin injuries are exposed to inflammatory bacteria and hinder the healing process. The skin being the biggest tissue of the whole body ensures protection against microbial invasion, dehydration, and against chemical, thermal, bright radiations and mechanical agents. When injured, the skin loses its defensive purpose and the attack of bacterial types arises with the loss of protein, water, and electrolytes. Improved wound closure therapy helps to restore normal skin function by managing wounds with the help of a suitable skin replacement. According to the type of wound and its healing ability, an appropriate skin replacement system must be identified. Nanofibrous layers because of their permeable structure, their large superficial reach and their similarity with the local extracellular network serve as cutaneous substitution for dealing with deep and superficial injuries. By a diminished microbial load without infestation, scab formation and infiltration of defense cells in the initial phase, acute injuries are usually characterized. Here recovery is related with epithelialization, angiogenesis and relocation of fibroblasts. The wound becomes obstinate when microbial biofilms are developed while the immune system does not manage to eliminate the infection. Increased inflammatory process, lower deep tissue oxygenation, fibrin cuffs, fibroblastic senescence, altered angiogenesis, stalled re-epithelialization and chronic infection have been visualized. Conventional wound mending treatments for the most part falling flat to supply a great clinical result, either basically like wound epithelialization and regulation of fluid loss or practically like histological highlights that decide versatility, strength, affectability, etc. Conventional wound therapies commonly fail to offer a better medical output, like wound epithelialization and regulation of fluid reduction or physiologically like cellular features that determine durability, sensitivity, elasticity, etc. Nanotechnology may be a dependable investigation space for wound-healing treatments through their versatile physicochemical properties. Advancing nano platforms with novel solutions for curing chronicdiabetic wounds are discussed in detail that can guide further research in this sector.
Collapse
Affiliation(s)
- R I Jari Litany
- Department of Nanotechnology, Noorul Islam Centre for Higher Education, Kumaracoil, Tamil Nadu 629180, India
| | - P K Praseetha
- Department of Nanotechnology, Noorul Islam Centre for Higher Education, Kumaracoil, Tamil Nadu 629180, India.
| |
Collapse
|
166
|
Special Issue: Ceramic and Metallic Biomaterials Nanoparticles for Applications in Medical Sciences. COATINGS 2022. [DOI: 10.3390/coatings12070998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Nowadays, the development of new materials that can be used to treat, repair, diagnose, replace, or restore a function of the human body represents one of the key research topics for the worldwide scientists and medical industries [...]
Collapse
|
167
|
Zein R, Alghoraibi I, Soukkarieh C, Alahmad A. Investigation of Cytotoxicity of Biosynthesized Colloidal Nanosilver against Local Leishmania tropica: In Vitro Study. MATERIALS 2022; 15:ma15144880. [PMID: 35888346 PMCID: PMC9318884 DOI: 10.3390/ma15144880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 07/06/2022] [Accepted: 07/11/2022] [Indexed: 12/10/2022]
Abstract
Leishmaniasis is one of the biggest health problems in the world. Traditional therapeutic methods still depend on a small range of products, mostly chemically. However, the treatment with these drugs is expensive and can cause serious adverse effects, and they have inconsistent effectiveness due to the resistance of parasites to these drugs. The treatment of leishmanial disease has always been a challenge for researchers. The development of nanoscale metals such as silver has attracted significant attention in the field of medicine. The unique characteristic features of silver nanoparticles (AgNPs) make them effective antileishmanial agents. In recent years, green nanotechnology has provided the development of green nanoparticle-based treatment methods for Leishmaniasis. Although there are many studies based on green nanoparticles against Leishmania parasites, this is the first study on the antileishmanial effect of biosynthesized AgNPs using an aqueous extract of Eucalyptus camaldulensis leaves (AEECL) as a reducing agent of silver ions. Different parameters such as AgNO3 concentration, AEECL concentration, and reaction time were studied to investigate the optimum factors for the preparation of stable and small-sized silver nanoparticles. The spherical shape of colloidal nanosilver (CN-Ag) was confirmed by atomic force microscope (AFM) and scanning electron microscope (SEM) images with sizes of 27 and 12 nm, respectively. A high density of nanoparticles with a small size of 10 nm has been confirmed from dynamic light scattering (DLS) analysis. The zeta potential value of 23 mV indicated that colloidal silver nanoparticles were stable. The nano-tracker analysis (NTA) showed the Brownian motion of silver nanoparticles with a hydrodynamic diameter of 31 nm. The antioxidant property of CN-Ag was determined using the stable radical 2,2-Diphenyl-1-picrylhydrazyl (DPPH) assay. In this study, a significant cytotoxic effect of biosynthesized CN-Ag has been shown against Leishmania tropica parasites at low concentrations (1.25, 2.5, and 3.75 µg/mL). These results could be used as a future alternative drug or could be a supportive treatment for Leishmaniasis.
Collapse
Affiliation(s)
- Raghad Zein
- Physics Department, Faculty of Sciences, Damascus University, Damascus P.O. Box 30621, Syria;
- Correspondence: (R.Z.); (A.A.)
| | - Ibrahim Alghoraibi
- Physics Department, Faculty of Sciences, Damascus University, Damascus P.O. Box 30621, Syria;
- Department of Basic and Supporting Sciences, Faculty of Pharmacy, Arab International University, Daraa P.O. Box 30621, Syria
| | - Chadi Soukkarieh
- Department of Animal Biology, Faculty of Sciences, Damascus University, Damascus P.O. Box 30621, Syria;
| | - Abdalrahim Alahmad
- Institute of Technical Chemistry, Leibniz University Hannover, Callinstrasse 5, 30167 Hannover, Germany
- Correspondence: (R.Z.); (A.A.)
| |
Collapse
|
168
|
Perumal S, Atchudan R, Rühl E, Graf C. Controlled Synthesis of Platinum and Silver Nanoparticles Using Multivalent Ligands. NANOMATERIALS 2022; 12:nano12132294. [PMID: 35808130 PMCID: PMC9268602 DOI: 10.3390/nano12132294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/29/2022] [Accepted: 06/29/2022] [Indexed: 02/06/2023]
Abstract
Here, the controlled formation of platinum nanoparticles (PtNPs) and silver nanoparticles (AgNPs) using amine-functionalized multivalent ligands are reported. The effects of reaction temperature and ligand multivalency on the growth kinetics, size, and shape of PtNPs and AgNPs were systematically studied by performing a stepwise and a one-step process. PtNPs and AgNPs were prepared in the presence of amine ligands using platinum (II) acetylacetonate and silver (I) acetylacetonate, respectively. The effects of ligands and temperature on the formation of PtNPs were studied using a transmission electron microscope (TEM). For the characterization of AgNPs, additionally, ultraviolet-visible (UV-Vis) absorption was employed. The TEM measurements revealed that PtNPs prepared at different temperatures (160–200 °C, in a stepwise process) are monodispersed and of spherical shape regardless of the ligand multivalency or reaction temperature. In the preparation of PtNPs by the one-step process, ligands affect the shape of the PtNPs, which can be explained by the affinity of the ligands. The TEM and UV-Vis absorption studies on the formation of AgNPs with mono-, di-, and trivalent ligands showed narrower size distributions, while increasing the temperature from 80 °C to 120 °C and with a trivalent ligand in a one-step process.
Collapse
Affiliation(s)
- Suguna Perumal
- Physikalische Chemie, Institut für Chemie und Biochemie, Freie Universität Berlin, 14195 Berlin, Germany;
- Department of Chemistry, Sejong University, Seoul 143747, Korea
| | - Raji Atchudan
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea;
| | - Eckart Rühl
- Physikalische Chemie, Institut für Chemie und Biochemie, Freie Universität Berlin, 14195 Berlin, Germany;
- Correspondence: (E.R.); (C.G.)
| | - Christina Graf
- Physikalische Chemie, Institut für Chemie und Biochemie, Freie Universität Berlin, 14195 Berlin, Germany;
- Department of Chemistry and Biotechnology, Darmstadt University of Applied Sciences, 64295 Darmstadt, Germany
- Correspondence: (E.R.); (C.G.)
| |
Collapse
|
169
|
Aceti DM, Filipov E, Angelova L, Sotelo L, Fontanot T, Yousefi P, Christiansen S, Leuchs G, Stanimirov S, Trifonov A, Buchvarov I, Daskalova A. Single-Step Process for Titanium Surface Micro- and Nano-Structuring and In Situ Silver Nanoparticles Formation by Ultra-Short Laser Patterning. MATERIALS 2022; 15:ma15134670. [PMID: 35806794 PMCID: PMC9267125 DOI: 10.3390/ma15134670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 02/05/2023]
Abstract
Ultra-short laser (USL)-induced surface structuring combined with nanoparticles synthesis by multiphoton photoreduction represents a novel single-step approach for commercially pure titanium (cp-Ti) surface enhancement. Such a combination leads to the formation of distinct topographical features covered by nanoparticles. The USL processing of cp-Ti in an aqueous solution of silver nitrate (AgNO3) induces the formation of micron-sized spikes surmounted by silver nanoparticles (AgNPs). The proposed approach combines the structuring and oxidation of the Ti surface and the synthesis of AgNPs in a one-step process, without the use of additional chemicals or a complex apparatus. Such a process is easy to implement, versatile and sustainable compared to alternative methodologies capable of obtaining comparable results. Antimicrobial surfaces on medical devices (e.g., surgical tools or implants), for which titanium is widely used, can be realized due to the simultaneous presence of AgNPs and micro/nano-structured surface topography. The processed surfaces were examined by means of a scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), atomic force microscopy (AFM) and Raman spectroscopy. The surface morphology and the oxidation, quality and quantity of AgNPs were analyzed in relation to process parameters (laser scanning speed and AgNO3 concentration), as well as the effect of AgNPs on the Raman signal of Titanium oxide.
Collapse
Affiliation(s)
- Dante Maria Aceti
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
| | - Emil Filipov
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
| | - Liliya Angelova
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
| | - Lamborghini Sotelo
- Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstraße 7, 91058 Erlangen, Germany
- Innovations-Institut für Nanotechnologie und Korrelative Mikroskopie gGmbH Äußere Nürnberger Str. 62, 91301 Forchheim, Germany
| | - Tommaso Fontanot
- Fraunhofer Institute for Ceramic Technologies and Systems IKTS Äußere Nürnberger Str. 62, 91301 Forchheim, Germany
| | - Peyman Yousefi
- Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstraße 7, 91058 Erlangen, Germany
- Fraunhofer Institute for Ceramic Technologies and Systems IKTS Äußere Nürnberger Str. 62, 91301 Forchheim, Germany
| | - Silke Christiansen
- Innovations-Institut für Nanotechnologie und Korrelative Mikroskopie gGmbH Äußere Nürnberger Str. 62, 91301 Forchheim, Germany
- Fraunhofer Institute for Ceramic Technologies and Systems IKTS Äußere Nürnberger Str. 62, 91301 Forchheim, Germany
| | - Gerd Leuchs
- Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstraße 7, 91058 Erlangen, Germany
- Max-Planck-Institut für die Physik des Lichts, 91058 Erlangen, Germany
| | - Stanislav Stanimirov
- Faculty of Chemistry and Pharmacy, Sofia University, 1 J. Bourchier Blvd., 1164 Sofia, Bulgaria
| | - Anton Trifonov
- Department of Physics, Sofia University, 5 J. Bourchier Blvd., 1164 Sofia, Bulgaria
| | - Ivan Buchvarov
- Department of Physics, Sofia University, 5 J. Bourchier Blvd., 1164 Sofia, Bulgaria
| | - Albena Daskalova
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
| |
Collapse
|
170
|
Mumtaz S, Ali S, Mumtaz S, Mughal TA, Tahir HM, Shakir HA. Chitosan conjugated silver nanoparticles: the versatile antibacterial agents. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04321-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
171
|
Sonbol H, Mohammed AE, Korany SM. Soil Fungi as Biomediator in Silver Nanoparticles Formation and Antimicrobial Efficacy. Int J Nanomedicine 2022; 17:2843-2863. [PMID: 35795079 PMCID: PMC9250898 DOI: 10.2147/ijn.s356724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 04/12/2022] [Indexed: 12/02/2022] Open
Abstract
Introduction and Objectives Biogenic agents in nanoparticles fabrication are gaining great interest due to their lower possible negative environmental impacts. The present study aimed to isolate fungal strains from deserts in Saudi Arabia and assess their ability in silver nanoparticles (AgNPs) fabrication and evaluate their antibacterial effect. Methods Soil fungi were identified using 18s rDNA, and their ability in NPs fabrication was assessed as extracellular synthesis, then UV-vis spectroscopy, dynamic light scattering (DLS), energy-dispersive X-ray spectroscopy, and transmission electron microscopy were used for AgNPs characterization. The antibacterial activity of fungal-based NPs was assessed against one Gram-positive methicillin-resistant S. aureus (MRSA) and three Gram-negative bacteria (E. coli, Pseudomonas aeruginosa, and Klebsiella pneumoniae). Ultrastructural changes caused by fungal-based NPs on K. pneumoniae were investigated using TEM along with SDS-PAGE for protein profile patterns. Results The three fungal isolates were identified as Phoma sp. (MN995524), Chaetomium globosum (MN995493), and Chaetomium sp. (MN995550), and their filtrate reduced Ag ions into spherical P-AgNPs, G-AgNPs, and C-AgNPs, respectively. DLS data showed an average size between 12.26 and 70.24 nm, where EDX spectrums represent Ag at 3.0 keV peak. G-AgNPs displayed strong antibacterial activities against Klebsiella pneumoniae, and the ultrastructural changes caused by NPs were noted. Additionally, SDS-PAGE analysis of treated K. pneumoniae revealed fewer bands compared to control, which could be related to protein degradation. Conclusion Present findings have consequently developed an eco-friendly approach in NPs formation by environmentally isolated fungal strains to yield NPs as antibacterial agents.
Collapse
Affiliation(s)
- Hana Sonbol
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Afrah E Mohammed
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Shereen M Korany
- Botany and Microbiology Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt
| |
Collapse
|
172
|
Zhang X, Li Y, Luo X, Ding Y. Enhancing antibacterial property of porous titanium surfaces with silver nanoparticles coatings via electron-beam evaporation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2022; 33:57. [PMID: 35737197 PMCID: PMC9226093 DOI: 10.1007/s10856-022-06679-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
Antibacterial activity is one of the most vital characteristics for Titanium (Ti) dental implants. Coating antibacterial material onto Ti surfaces is an effective approach to enhance their intrinsic antibacterial ability. However, a cost-effective but efficient coating strategy for realizing this objective still remains challenging. In this study, we proposed a novel implant surface modification strategy for coating silver nanoparticles onto the porous Ti surface via a facile electron beam evaporation (EBE) approach. Porous Ti surfaces were firstly prepared by sand-blasting large grit acid-etching (SLA) process. Then, the silver nanoparticles coating thickness on the porous Ti surface was adjusted and optimized by altering the duration of EBE process. Consequently, composite porous Ti surfaces with different silver thicknesses were synthesized. Polished Ti (PT) surface without SLA or EBE process was also prepared as the controlled blank group. The surface characterizations were analyzed by SEM, AFM, and XPS. After that, the antibacterial properties of all groups were tested with bacteria counting method, bacterial viability test, live/dead bacterial staining, and SEM examination. Results show that silver nanoparticles were uniformly distributed on the porous Ti surfaces after the SLA and EBE processes. After being incorporated with silver nanoparticles, the composite surfaces successfully inhibited the growth of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The antibacterial ratio (AR) values of SLA-Ag groups increased with the increasing silver thickness and are significantly higher than those of PT and SLA groups. Therefore, by the SLA and EBE processes, the composite porous Ti surfaces modified with silver nanoparticles coatings demonstrate superior antibacterial property compared with pure Ti surfaces, which is highly promising for enhancing the antibacterial functions of dental implants. Graphical abstract.
Collapse
Affiliation(s)
- Xiaoyu Zhang
- School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China
| | - Yaoxu Li
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430022, Wuhan, China
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, 430022, Wuhan, China
| | - Xiaobing Luo
- School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China
| | - Yumei Ding
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430022, Wuhan, China.
- School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, 430022, Wuhan, China.
| |
Collapse
|
173
|
A Review on the Recent Advancements on Therapeutic Effects of Ions in the Physiological Environments. PROSTHESIS 2022. [DOI: 10.3390/prosthesis4020026] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This review focuses on the therapeutic effects of ions when released in physiological environments. Recent studies have shown that metallic ions like Ag+, Sr2+, Mg2+, Mn2+, Cu2+, Ca2+, P+5, etc., have shown promising results in drug delivery systems and regenerative medicine. These metallic ions can be loaded in nanoparticles, mesoporous bioactive glass nanoparticles (MBGNs), hydroxyapatite (HA), calcium phosphates, polymeric coatings, and salt solutions. The metallic ions can exhibit different functions in the physiological environment such as antibacterial, antiviral, anticancer, bioactive, biocompatible, and angiogenic effects. Furthermore, the metals/metalloid ions can be loaded into scaffolds to improve osteoblast proliferation, differentiation, bone development, fibroblast growth, and improved wound healing efficacy. Moreover, different ions possess different therapeutic limits. Therefore, further mechanisms need to be developed for the highly controlled and sustained release of these ions. This review paper summarizes the recent progress in the use of metallic/metalloid ions in regenerative medicine and encourages further study of ions as a solution to cure diseases.
Collapse
|
174
|
Green Synthesized Silver Nanoparticles Using Lactobacillus Acidophilus as an Antioxidant, Antimicrobial, and Antibiofilm Agent Against Multi-drug Resistant Enteroaggregative Escherichia Coli. Probiotics Antimicrob Proteins 2022; 14:904-914. [PMID: 35715714 DOI: 10.1007/s12602-022-09961-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2022] [Indexed: 12/17/2022]
Abstract
The present study was envisaged to employ the green synthesis and characterization of silver nanoparticles (AgNPs) using the potential probiotic strain Lactobacillus acidophilus, to assess its antibacterial as well as antibiofilm activity against multi-drug-resistant enteroaggregative Escherichia coli (MDR-EAEC) strains and to investigate their antioxidant activity. In this study, AgNPs were successfully synthesized through an eco-friendly protocol, which was then confirmed by its X-ray diffraction (XRD) pattern. A weight loss of 15% up to 182 °C with a narrow exothermic peak between 170 °C and 205 °C was observed in thermogravimetric analysis-differential thermal analysis (TGA-DTA), while aggregated nanoclusters were observed in scanning electron microscopy (SEM). Moreover, the transmission electron microscopy (TEM) imaging of AgNPs revealed a spherical morphology and crystalline nature with an optimum size ranging from 10 to 20 nm. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values of green synthesized AgNPs against the MDR-EAEC strains were found to be 7.80 mg/L and 15.60 mg/L, respectively. In vitro time-kill kinetic assay revealed a complete elimination of the MDR-EAEC strains after 180 min on co-incubation with the AgNPs. Moreover, the green synthesized AgNPs were found safe by in vitro haemolytic assay. Besides, the green synthesized AgNPs exhibited significant biofilm inhibition (P < 0.001) formed by MDR-EAEC strains. Additionally, a concentration-dependent antioxidant activity was observed in 2,2'-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assays. Hence, this study demonstrated potential antibacterial as well as antibiofilm activity of green synthesized AgNPs against MDR-EAEC strains with antioxidant properties and warrants further in-depth studies to explore it as an effective antimicrobial agent against MDR infections.
Collapse
|
175
|
Skanda S, Bharadwaj PSJ, Datta Darshan VM, Sivaramakrishnan V, Vijayakumar BS. Proficient mycogenic synthesis of silver nanoparticles by soil derived fungus Aspergillus melleus SSS-10 with cytotoxic and antibacterial potency. J Microbiol Methods 2022; 199:106517. [PMID: 35697186 DOI: 10.1016/j.mimet.2022.106517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 06/05/2022] [Accepted: 06/07/2022] [Indexed: 12/27/2022]
Abstract
The present study aimed at evaluating the extracellular synthesis of silver nanoparticles by soil fungus Aspergillus melleus SSS-10 for antibacterial and cytotoxic activity. In this study, the formation of silver nanoparticles (AgNPs) was estimated by the colour change in cell free extract from pale yellow to golden yellow after 24 h of the reaction. UV-Vis study showed the absorbance maxima at 410 nm. Tauc plot analysis revealed the band gap energy as 2.34 eV. Dynamic Light Scattering (DLS) data revealed polydisperse anisotropic silver nanoparticles with average hydrodynamic diameter of 92.006 nm. Zeta potential of - 19.6 mV provided evidence of stable silver nanoparticles. X-ray diffraction (XRD) analysis revealed four prominent Bragg peaks corresponding to (111), (200), (220) and (311) planes characteristic of silver (Ag) in FCC structural configuration. Average crystallite size was found to be 87.3 nm from Scherrer equation. Scanning Electron Microscope (SEM) analysis revealed irregular morphology of silver nanoparticles. EDS analysis displayed characteristic energy peaks of silver from 2.72 keV to 3.52 keV confirming the presence of silver nanoparticles. Biosynthesized AgNPs exhibited strong cytotoxic potential on MG-63 cells. AgNPs also showed antibacterial activity against both Staphylococcus aureus and Escherichia coli. In conclusion, this study provides a platform to explore the utility of fungal mediated silver nanoparticles synthesized for various pharmaceutical and cosmeceutical applications.
Collapse
Affiliation(s)
- S Skanda
- Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam Campus, Puttaparthi 515134, Andhra Pradesh, India.
| | - P S J Bharadwaj
- Department of Physics, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam Campus, Puttaparthi 515134, Andhra Pradesh, India.
| | - V M Datta Darshan
- Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam Campus, Puttaparthi 515134, Andhra Pradesh, India.
| | - Venketesh Sivaramakrishnan
- Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam Campus, Puttaparthi 515134, Andhra Pradesh, India.
| | - B S Vijayakumar
- Department of Biosciences, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam Campus, Puttaparthi 515134, Andhra Pradesh, India.
| |
Collapse
|
176
|
Bahrami A, Arabestani MR, Taheri M, Farmany A, Norozzadeh F, Hosseini SM, Nozari H, Nouri F. Exploring the Role of Heavy Metals and Their Derivatives on the Pathophysiology of COVID-19. Biol Trace Elem Res 2022; 200:2639-2650. [PMID: 34448983 PMCID: PMC8391869 DOI: 10.1007/s12011-021-02893-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 08/17/2021] [Indexed: 12/13/2022]
Abstract
Many aspects of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its disease, COVID-19, have been studied to determine its properties, transmission mechanisms, and pathology. These efforts are aimed at identifying potential approaches to control or treat the disease. Early treatment of novel SARS-CoV-2 infection to minimize symptom progression has minimal evidence; however, many researchers and firms are working on vaccines, and only a few vaccines exist. COVID-19 is affected by several heavy metals and their nanoparticles. We investigated the effects of heavy metals and heavy metal nanoparticles on SARS-CoV-2 and their roles in COVID-19 pathogenesis. AgNPs, AuNPs, gold-silver hybrid NPs, copper nanoparticles, zinc oxide, vanadium, gallium, bismuth, titanium, palladium, silver grafted graphene oxide, and some quantum dots were tested to see if they could minimize the severity or duration of symptoms in patients with SARS-CoV-2 infection when compared to standard therapy.
Collapse
Affiliation(s)
- Ali Bahrami
- Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammad Reza Arabestani
- Department of Medical Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammad Taheri
- Department of Medical Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Abbas Farmany
- Dental Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Fatemeh Norozzadeh
- Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Seyed Mostafa Hosseini
- Department of Medical Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Hesam Nozari
- Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Fatemeh Nouri
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran.
| |
Collapse
|
177
|
Size-Dependent Antibacterial, Antidiabetic, and Toxicity of Silver Nanoparticles Synthesized Using Solvent Extraction of Rosa indica L. Petals. Pharmaceuticals (Basel) 2022; 15:ph15060689. [PMID: 35745609 PMCID: PMC9230948 DOI: 10.3390/ph15060689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/29/2022] [Accepted: 05/30/2022] [Indexed: 02/05/2023] Open
Abstract
In this study, silver nanoparticles (AgNPs) are synthesized through a green approach by employing Rosa indica L. petal (RE) extracts as reducing and stabilizing agents, which are extracted using three different solvents: ethanol (Et), acetone (Ac), and water (Aq). The phase formation of the AgNPs is confirmed using X-ray diffraction (XRD). Morphological analysis is performed using a field-emission scanning electron microscope (FESEM), which reveals that the AgNPs are spherical in shape. The size is estimated using ImageJ software, which is found to be ~12, 18, and 770 nm for RE-Ac-Ag, RE-Et-Ag, and RE-Aq-Ag, respectively. The phytochemicals of Rosa indica L. petals involved in the formation of the AgNPs are studied using Fourier transform infrared spectroscopy (FTIR). Finally, these materials are studied for their antibacterial, antidiabetic, antioxidant, and hemolytic activity, as well as cell toxicity properties. The materials, RE-Ac-Ag and RE-Et-Ag, are found to be more effective than RE-Aq-Ag in inhibiting E. coli (Gram-negative bacteria) and S. aureus (Gram-positive bacteria). Hemolytic studies reveal that all of the samples show concentration-dependent activity up to 50 µg/mL. RE-Ac-Ag and RE-Et-Ag exhibit nonhemolytic behavior, whereas RE-Aq-Ag remains nonhemolytic until 100 µg/mL. The antidiabetic ability of the AgNPs is evaluated using α-amylase inhibition assay (DNSA assay) and α-glucosidase inhibition assay. The results are found to be effective, with IC50 values of α-amylase and α-glycosidase being 50, 50, and 75 µg/mL for RE-Et-Ag, RE-Ac-Ag, and RE-Aq-Ag, respectively. DPPH assay shows that the AgNPs inhibited the antioxidants well, with IC50 values of 40 µg/mL for RE-Et-Ag and RE-Ac-Ag and 60 µg/mL for RE-Aq-Ag. The toxicity study reveals that the AgNPs show size- and concentration-dependent behavior. Overall, it is realized from the findings that RE-Ac-Ag, RE-Et-Ag, and RE-Aq-Ag show size-dependent antibacterial, antidiabetic, and toxicity properties.
Collapse
|
178
|
Green Synthesis of Silver Nanoparticles Using Euphorbia wallichii Leaf Extract: Its Antibacterial Action against Citrus Canker Causal Agent and Antioxidant Potential. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27113525. [PMID: 35684463 PMCID: PMC9182241 DOI: 10.3390/molecules27113525] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 11/24/2022]
Abstract
Biologically synthesized silver nanoparticles are emerging as attractive alternatives to chemical pesticides due to the ease of their synthesis, safety and antimicrobial activities in lower possible concentrations. In the present study, we have synthesized silver nanoparticles (AgNPs) using the aqueous extract of the medicinal plant Euphorbia wallichii and tested them against the plant pathogenic bacterium Xanthomonas axonopodis, the causative agent of citrus canker, via an in vitro experiment. The synthesized silver nanoparticles were characterized by techniques such as UV-Vis spectroscopy, Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction analysis and transmission electron microscopy. Moreover, the plant species were investigated for phenolics, flavonoids and antioxidant activity. The antioxidant potential of the extract was determined against a DPPH radical. The extract was also evaluated for phenolic compounds using the HPLC technique. The results confirmed the synthesis of centered cubic, spherical-shaped and crystalline nanoparticles by employing standard characterization techniques. A qualitative and quantitative phytochemical analysis revealed the presence of phenolics (41.52 mg GAE/g), flavonoids (14.2 mg QE/g) and other metabolites of medicinal importance. Different concentrations (1000 µg/mL to 15.62 µg/mL—2 fold dilutions) of AgNPs and plant extract (PE) alone, and both in combination (AgNPs-PE), exhibited a differential inhibition of X. axanopodis in a high throughput antibacterial assay. Overall, AgNPs-PE was superior in terms of displaying significant antibacterial activity, followed by AgNPs alone. An appreciable antioxidant potential was recorded as well. The observed antibacterial and antioxidant potential may be attributed to eight phenolic compounds identified in the extract. The Euphorbia wallichii leaf-extract-induced synthesized AgNPs exhibited strong antibacterial activity against X. axanopodis, which could be exploited as effective alternative preparations against citrus canker in planta in a controlled environment. In addition, as a good source of phenolic compounds, the plant could be further exploited for potent antioxidants.
Collapse
|
179
|
Marinescu L, Ficai D, Ficai A, Oprea O, Nicoara AI, Vasile BS, Boanta L, Marin A, Andronescu E, Holban AM. Comparative Antimicrobial Activity of Silver Nanoparticles Obtained by Wet Chemical Reduction and Solvothermal Methods. Int J Mol Sci 2022; 23:ijms23115982. [PMID: 35682664 PMCID: PMC9180968 DOI: 10.3390/ijms23115982] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/07/2022] [Accepted: 05/20/2022] [Indexed: 02/01/2023] Open
Abstract
The synthesis of nanoparticles from noble metals has received high attention from researchers due to their unique properties and their wide range of applications. Silver nanoparticles (AgNPs), in particular, show a remarkable inhibitory effect against microorganisms and viruses. Various methods have been developed to obtain AgNPs, however the stability of such nanostructures over time is still challenging. Researchers attempt to obtain particular shapes and sizes in order to tailor AgNPs properties for specific areas, such as biochemistry, biology, agriculture, electronics, medicine, and industry. The aim of this study was to design AgNPs with improved antimicrobial characteristics and stability. Two different wet chemical routes were considered: synthesis being performed (i) reduction method at room temperatures and (ii) solvothermal method at high temperature. Here, we show that the antimicrobial properties of the obtained AgNPs, are influenced by their synthesis route, which impact on the size and shape of the structures. This work analyses and compares the antimicrobial properties of the obtained AgNPs, based on their structure, sizes and morphologies which are influenced, in turn, not only by the type or quantities of precursors used but also by the temperature of the reaction. Generally, AgNPs obtained by solvothermal, at raised temperature, registered better antimicrobial activity as compared to NPs obtained by reduction method at room temperature.
Collapse
Affiliation(s)
- Liliana Marinescu
- Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, Gh Polizu Street 1-7, 011061 Bucharest, Romania; (L.M.); (D.F.); (A.F.); (O.O.); (A.I.N.); (B.S.V.)
| | - Denisa Ficai
- Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, Gh Polizu Street 1-7, 011061 Bucharest, Romania; (L.M.); (D.F.); (A.F.); (O.O.); (A.I.N.); (B.S.V.)
| | - Anton Ficai
- Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, Gh Polizu Street 1-7, 011061 Bucharest, Romania; (L.M.); (D.F.); (A.F.); (O.O.); (A.I.N.); (B.S.V.)
- Academy of Romanian Scientists, Ilfov Street 3, 050054 Bucharest, Romania
| | - Ovidiu Oprea
- Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, Gh Polizu Street 1-7, 011061 Bucharest, Romania; (L.M.); (D.F.); (A.F.); (O.O.); (A.I.N.); (B.S.V.)
- Academy of Romanian Scientists, Ilfov Street 3, 050054 Bucharest, Romania
| | - Adrian Ionut Nicoara
- Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, Gh Polizu Street 1-7, 011061 Bucharest, Romania; (L.M.); (D.F.); (A.F.); (O.O.); (A.I.N.); (B.S.V.)
| | - Bogdan Stefan Vasile
- Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, Gh Polizu Street 1-7, 011061 Bucharest, Romania; (L.M.); (D.F.); (A.F.); (O.O.); (A.I.N.); (B.S.V.)
| | - Laura Boanta
- Department of Hydraulics, Hydraulic Machinery and Environmental Engineering, Faculty of Power Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, District 6, 060042 Bucharest, Romania; (L.B.); (A.M.)
| | - Alexandru Marin
- Department of Hydraulics, Hydraulic Machinery and Environmental Engineering, Faculty of Power Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, District 6, 060042 Bucharest, Romania; (L.B.); (A.M.)
| | - Ecaterina Andronescu
- Faculty of Chemical Engineering and Biotechnologies, Politehnica University of Bucharest, Gh Polizu Street 1-7, 011061 Bucharest, Romania; (L.M.); (D.F.); (A.F.); (O.O.); (A.I.N.); (B.S.V.)
- Academy of Romanian Scientists, Ilfov Street 3, 050054 Bucharest, Romania
- Correspondence:
| | - Alina-Maria Holban
- Microbiology and Immunology Department, Faculty of Biology, University of Bucharest, 1-3 Portocalelor Lane, District 5, 77206 Bucharest, Romania;
| |
Collapse
|
180
|
Therapeutic potential of biogenic and optimized silver nanoparticles using Rubia cordifolia L. leaf extract. Sci Rep 2022; 12:8831. [PMID: 35614187 PMCID: PMC9133087 DOI: 10.1038/s41598-022-12878-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 05/12/2022] [Indexed: 12/24/2022] Open
Abstract
Rubia cordifolia L. is a widely used traditional medicine in the Indian sub-continent and Eastern Asia. In the present study, the aqueous leaf extract of the R. Cordifolia was used to fabricate silver nanoparticles (RC@AgNPs), following a green synthesis approach. Effect of temperature (60 °C), pH (8), as well the concentration of leaf extract (2 ml) and silver nitrate (2 mM) were optimized for the synthesis of stable RC@AgNPs. The phytofabrication of nanosilver was validated by UV–visible spectral analysis, which displayed a distinctive surface plasmon resonance peak at 432 nm. The effective functional molecules as capping and stabilizing agents, and responsible for the conversion of Ag+ to nanosilver (Ag0) were identified using the FTIR spectra. The spherical RC@AgNPs with an average size of ~ 20.98 nm, crystalline nature, and 61% elemental composition were revealed by TEM, SEM, XRD, and. EDX. Biogenic RC@AgNPs displayed a remarkable anticancer activity against B16F10 (melanoma) and A431 (carcinoma) cell lines with respective IC50 of 36.63 and 54.09 µg/mL, respectively. Besides, RC@AgNPs showed strong antifungal activity against aflatoxigenic Aspergillus flavus, DNA-binding properties, and DPPH and ABTS free radical inhibition. The presented research provides a potential therapeutic agent to be utilized in various biomedical applications.
Collapse
|
181
|
Yazdani-Ahmadabadi H, Felix DF, Yu K, Yeh HH, Luo HD, Khoddami S, Takeuchi LE, Alzahrani A, Abbina S, Mei Y, Fazli L, Grecov D, Lange D, Kizhakkedathu JN. Durable Surfaces from Film-Forming Silver Assemblies for Long-Term Zero Bacterial Adhesion without Toxicity. ACS CENTRAL SCIENCE 2022; 8:546-561. [PMID: 35647287 PMCID: PMC9136974 DOI: 10.1021/acscentsci.1c01556] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Indexed: 06/15/2023]
Abstract
The long-term prevention of biofilm formation on the surface of indwelling medical devices remains a challenge. Silver has been reutilized in recent years for combating biofilm formation due to its indisputable bactericidal potency; however, the toxicity, low stability, and short-term activity of the current silver coatings have limited their use. Here, we report the development of silver-based film-forming antibacterial engineered (SAFE) assemblies for the generation of durable lubricous antibiofilm surface long-term activity without silver toxicity that was applicable to diverse materials via a highly scalable dip/spray/solution-skinning process. The SAFE coating was obtained through a large-scale screening, resulting in effective incorporation of silver nanoparticles (∼10 nm) into a stable nonsticky coating with high surface hierarchy and coverage, which guaranteed sustained silver release. The lead coating showed zero bacterial adhesion over a 1 month experiment in the presence of a high load of diverse bacteria, including difficult-to-kill and stone-forming strains. The SAFE coating showed high biocompatibility and excellent antibiofilm activity in vivo.
Collapse
Affiliation(s)
- Hossein Yazdani-Ahmadabadi
- Department
of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Demian F. Felix
- The
Stone Centre at Vancouver General Hospital, Department of Urologic
Sciences, University of British Columbia, Vancouver, British Columbia V5Z 1M9, Canada
| | - Kai Yu
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
- Department
of Pathology and Laboratory Medicine, University
of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Han H. Yeh
- Department
of Mechanical Engineering, University of
British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Haiming D. Luo
- Department
of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Sara Khoddami
- The
Stone Centre at Vancouver General Hospital, Department of Urologic
Sciences, University of British Columbia, Vancouver, British Columbia V5Z 1M9, Canada
| | - Lily E. Takeuchi
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
- Department
of Pathology and Laboratory Medicine, University
of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Amal Alzahrani
- The
Stone Centre at Vancouver General Hospital, Department of Urologic
Sciences, University of British Columbia, Vancouver, British Columbia V5Z 1M9, Canada
| | - Srinivas Abbina
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Yan Mei
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
- Department
of Pathology and Laboratory Medicine, University
of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Ladan Fazli
- Vancouver
Prostate Centre, Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia V6H 3Z6, Canada
| | - Dana Grecov
- Department
of Mechanical Engineering, University of
British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
- The
School of Biomedical Engineering, University
of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Dirk Lange
- The
Stone Centre at Vancouver General Hospital, Department of Urologic
Sciences, University of British Columbia, Vancouver, British Columbia V5Z 1M9, Canada
| | - Jayachandran N. Kizhakkedathu
- Department
of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
- Department
of Pathology and Laboratory Medicine, University
of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
- The
School of Biomedical Engineering, University
of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| |
Collapse
|
182
|
Alahmad A, Al-Zereini WA, Hijazin TJ, Al-Madanat OY, Alghoraibi I, Al-Qaralleh O, Al-Qaraleh S, Feldhoff A, Walter JG, Scheper T. Green Synthesis of Silver Nanoparticles Using Hypericum perforatum L. Aqueous Extract with the Evaluation of Its Antibacterial Activity against Clinical and Food Pathogens. Pharmaceutics 2022; 14:pharmaceutics14051104. [PMID: 35631691 PMCID: PMC9144328 DOI: 10.3390/pharmaceutics14051104] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 05/17/2022] [Accepted: 05/19/2022] [Indexed: 02/01/2023] Open
Abstract
The rapid development of nanotechnology and its applications in medicine has provided the perfect solution against a wide range of different microbes, especially antibiotic-resistant ones. In this study, a one-step approach was used in preparing silver nanoparticles (AgNPs) by mixing silver nitrate with hot Hypericum perforatum (St. John’s wort) aqueous extract under high stirring to prevent agglomeration. The formation of silver nanoparticles was monitored by continuous measurement of the surface plasma resonance spectra (UV-VIS). The effect of St. John’s wort aqueous extract on the formation of silver nanoparticles was evaluated and fully characterized by using different physicochemical techniques. The obtained silver nanoparticles were spherical, monodisperse, face-centered cubic (fcc) crystal structures, and the size ranges between 20 to 40 nm. They were covered with a capping layer of organic compounds considered as a nano dimension protective layer that prevents agglomeration and sedimentation. AgNPs revealed antibacterial activity against both tested Gram-positive and Gram-negative bacterial strains causing the formation of 13–32 mm inhibition zones with MIC 6.25–12.5 µg/mL; Escherichia coli strains were resistant to tested AgNPs. The specific growth rate of S. aureus was significantly reduced due to tested AgNPs at concentrations ≥½ MIC. AgNPs did not affect wound migration in fibroblast cell lines compared to control. Our results highlighted the potential use of AgNPs capped with plant extracts in the pharmaceutical and food industries to control bacterial pathogens’ growth; however, further studies are required to confirm their wound healing capability and their health impact must be critically evaluated.
Collapse
Affiliation(s)
- Abdalrahim Alahmad
- Institut für Technische Chemie, Leibniz Universität Hannove, Callinstraße 5, 30167 Hannover, Germany; (J.-G.W.); (T.S.)
- Correspondence: or (A.A.); (W.A.A.-Z.); (O.Y.A.-M.); Tel.: +49-511-7622773 (A.A.); +962-3-2372380 (W.A.A.-Z. & O.Y.A.-M.)
| | - Wael A. Al-Zereini
- Department of Biological Sciences, Faculty of Scince, Mutah University, P.O. Box 7, Mutah 61710, Jordan; (T.J.H.); (O.A.-Q.)
- Correspondence: or (A.A.); (W.A.A.-Z.); (O.Y.A.-M.); Tel.: +49-511-7622773 (A.A.); +962-3-2372380 (W.A.A.-Z. & O.Y.A.-M.)
| | - Tahani J. Hijazin
- Department of Biological Sciences, Faculty of Scince, Mutah University, P.O. Box 7, Mutah 61710, Jordan; (T.J.H.); (O.A.-Q.)
| | - Osama Y. Al-Madanat
- Department of Chemistry, Faculty of Scince, Mutah University, P.O. Box 7, Mutah 61710, Jordan
- Correspondence: or (A.A.); (W.A.A.-Z.); (O.Y.A.-M.); Tel.: +49-511-7622773 (A.A.); +962-3-2372380 (W.A.A.-Z. & O.Y.A.-M.)
| | - Ibrahim Alghoraibi
- Physics Department, Faculty of Science, Damascus University, Damascus P.O. Box 30621, Syria;
| | - Omar Al-Qaralleh
- Department of Biological Sciences, Faculty of Scince, Mutah University, P.O. Box 7, Mutah 61710, Jordan; (T.J.H.); (O.A.-Q.)
| | - Samer Al-Qaraleh
- Faculty of Medicine, Mutah University, P.O. Box 7, Mutah 61710, Jordan;
| | - Armin Feldhoff
- Institut für Physikalische Chemie und Elektrochemie, Leibniz Universität Hannove, Callinstraße 3A, 30167 Hannover, Germany;
| | - Johanna-Gabriela Walter
- Institut für Technische Chemie, Leibniz Universität Hannove, Callinstraße 5, 30167 Hannover, Germany; (J.-G.W.); (T.S.)
| | - Thomas Scheper
- Institut für Technische Chemie, Leibniz Universität Hannove, Callinstraße 5, 30167 Hannover, Germany; (J.-G.W.); (T.S.)
| |
Collapse
|
183
|
Wen L, Li M, Lin X, Li Y, Song H, Chen H. AgNPs Aggravated Hepatic Steatosis, Inflammation, Oxidative Stress, and Epigenetic Changes in Mice With NAFLD Induced by HFD. Front Bioeng Biotechnol 2022; 10:912178. [PMID: 35677306 PMCID: PMC9169095 DOI: 10.3389/fbioe.2022.912178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 04/29/2022] [Indexed: 12/30/2022] Open
Abstract
The recent development of silver nanoparticles (AgNPs) has sparked increased interest in biomedical and pharmaceutical applications, leading to the possibility of human exposure. The liver is the primary target organ in the metabolism and transport of nanoparticles. Non-alcoholic fatty liver disease (NAFLD) is the most common and leading cause of hepatic metabolic syndrome with approximately 15% of patients will develop into non-alcoholic steatohepatitis, fibrosis, cirrhosis, and eventually hepatocellular carcinoma. Thus, the potential hepatotoxicity of AgNPs on NAFLD development and progression should be of great concern. Herein, we explored the potential hepatic effect of a single intravenously injected dose of 0.5, 2.5, and 12.5 mg/kg BW on the liver function of high-fat-diet (HFD)-fed mice for 7 days. AgNP treatment increased serum levels of alanine aminotransferase, aspartate transaminase, triglycerides and cholesterols, the number of lipid droplets, and the contents of triglycerides and cholesterols in NAFLD mice livers compared to HFD-fed mice. The mechanism of AgNP-induced worsen hepatotoxicity in mice is associated with hyperactivation of SREBP-1c-mediated de novo lipogenesis and liver inflammation. Additionally, HFD-fed mice treated with AgNPs had significantly higher oxidative damage and lower global DNA methylation and DNA hydroxymethylation than NAFLD mice. This study suggests that AgNP treatment exacerbated HFD-induced hepatic steatosis, liver inflammation, oxidative stress, and epigenetic changes in mice, which is relevant to the risk of AgNP exposure on NAFLD development and progression.
Collapse
Affiliation(s)
- Ling Wen
- Guangzhou Twelfth People’s Hospital, Guangzhou, China
| | - Minyan Li
- Guangzhou Twelfth People’s Hospital, Guangzhou, China
| | - Xiaojun Lin
- Department of Gastroenterology, Guangzhou Twelfth People’s Hospital, Guangzhou Medical University, Guangzhou, China
| | - Yan Li
- Guangzhou Twelfth People’s Hospital, Guangzhou, China
| | - Huidong Song
- Guangzhou Twelfth People’s Hospital, Guangzhou, China
| | - Hanqing Chen
- Department of Gastroenterology, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| |
Collapse
|
184
|
Singh K, Gujju R, Bandaru S, Misra S, Babu KS, Puvvada N. Facet-Dependent Bactericidal Activity of Ag 3PO 4 Nanostructures against Gram-Positive/Negative Bacteria. ACS OMEGA 2022; 7:16616-16628. [PMID: 35601325 PMCID: PMC9118378 DOI: 10.1021/acsomega.2c00864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 04/21/2022] [Indexed: 06/15/2023]
Abstract
Ag3PO4 nanostructures (APNs) containing silver (Ag metal; of the noble metal families) have the potential to exhibit enzyme-mimetic activity. A nanostructure shape, including its surface facets, can improve the bioactivity of enzyme mimicry, yet the molecular mechanisms remain unclear. Herein, we report facet-dependent peroxidase and oxidase-like activity of APNs with both antibacterial and biofilm degrading properties through the generation of reactive oxygen species. Cubic APNs had superior antibacterial effects than rhombic dodecahedral shapes when inhibiting Gram-positive and Gram-negative bacterial pathogen proliferation and biofilm degradation. A similar performance was observed for rhombic dodecahedral shapes, being greater than tetrahedral-shaped APNs. The extent of enzyme-mimetic activity is attributed to the facets {100} present in cubic APNs that led the peroxide radicals to inhibit the proliferation of bacteria and degrade biofilm. These facets were compared to rhombic dodecahedral APNs {110} and tetrahedral APNs {111}, respectively, to reveal a facet-dependent enhanced antibacterial activity, providing a plausible mechanism for shape-dependent APNs material enzyme-mimetic effects on bacteria. Thus, our research findings can provide a direction to optimize bactericidal materials using APNs in clinically relevant applications.
Collapse
Affiliation(s)
- Kamini Singh
- Applied
Biology Division, CSIR-Indian Institute
of Chemical Technology, Hyderabad 500007, Telangana, India
- Centre
for Natural Products & Traditional Knowledge, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rajesh Gujju
- Applied
Biology Division, CSIR-Indian Institute
of Chemical Technology, Hyderabad 500007, Telangana, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sateesh Bandaru
- College
of Materials and Environmental Engineering, Institute for Advanced
Magnetic Materials, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Sunil Misra
- Applied
Biology Division, CSIR-Indian Institute
of Chemical Technology, Hyderabad 500007, Telangana, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Katragadda Suresh Babu
- Centre
for Natural Products & Traditional Knowledge, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Nagaprasad Puvvada
- Applied
Biology Division, CSIR-Indian Institute
of Chemical Technology, Hyderabad 500007, Telangana, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Department
of Chemistry, Indrashil University, Rajpur, Mehsana 382715, Gujarat, India
| |
Collapse
|
185
|
Singh P, Mijakovic I. Green synthesis and antibacterial applications of gold and silver nanoparticles from Ligustrum vulgare berries. Sci Rep 2022; 12:7902. [PMID: 35551489 PMCID: PMC9098411 DOI: 10.1038/s41598-022-11811-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/21/2022] [Indexed: 12/03/2022] Open
Abstract
Increasing demand for green or biological nanoparticles has led to various green technologies and resources, which play a critical role in forming biocompatible or green nanoparticles. So far, numerous medicinal plants have been explored for this purpose, assuming that medicinal components from the plant's material will contribute to corona formation around nanoparticles and enhance their efficacy. Research is also extended to other green and waste resources to be utilized for this purpose. In the current study, we explored Ligustrum vulgare berries, also known as privet berries, to reduce gold and silver salts into nanoparticles. L. vulgare berries showed great potential to form these nanoparticles, as gold nanoparticles (LV-AuNPs) formed within 5 min at room temperature, and silver nanoparticles (LV-AgNPs) formed in 15 min at 90 °C. LV-AuNPs and LV-AgNPs were characterized by various analytical methods, including UV–Vis, SEM, EDX, TEM, DLS, sp-ICP-MS, TGA, FT-IR, and MALDI-TOF. The results demonstrate that the LV-AuNPs are polydisperse in appearance with a size range 50–200 nm. LV-AuNPs exhibit various shapes, including spherical, triangular, hexagonal, rod, cuboid, etc. In contrast, LV-AgNPs are quite monodisperse, 20–70 nm, and most of the population was spherical. The nanoparticles remain stable over long periods and exhibit high negative zeta potential values. The antimicrobial investigation of LV-AgNPs demonstrated that the nanoparticles exhibit antibacterial ability with an MBC value of 150 g/mL against P. aeruginosa and 100 g/mL against E. coli, as determined by plate assay, live and dead staining, and SEM cell morphology analysis.
Collapse
Affiliation(s)
- Priyanka Singh
- The Novo Nordisk Foundation, Center for Biosustainability, Technical University of Denmark, 2800, Kogens Lyngby, Denmark.
| | - Ivan Mijakovic
- The Novo Nordisk Foundation, Center for Biosustainability, Technical University of Denmark, 2800, Kogens Lyngby, Denmark. .,Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of Technology, 412 96, Gothenburg, Sweden.
| |
Collapse
|
186
|
Piras CC, Mahon CS, Genever PG, Smith DK. Shaping and Patterning Supramolecular Materials─Stem Cell-Compatible Dual-Network Hybrid Gels Loaded with Silver Nanoparticles. ACS Biomater Sci Eng 2022; 8:1829-1840. [PMID: 35364810 PMCID: PMC9092345 DOI: 10.1021/acsbiomaterials.1c01560] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
![]()
Hydrogels
with spatio-temporally
controlled properties are appealing
materials for biological and pharmaceutical applications. We make
use of mild acidification protocols to fabricate hybrid gels using
calcium alginate in the presence of a preformed thermally triggered
gel based on a low-molecular-weight gelator (LMWG) 1,3:2:4-di(4-acylhydrazide)-benzylidene
sorbitol (DBS-CONHNH2). Nonwater-soluble calcium carbonate
slowly releases calcium ions over time when exposed to an acidic pH,
triggering the assembly of the calcium alginate gel network. We combined
the gelators in different ways: (i) the LMWG was used as a template
to spatially control slow calcium alginate gelation within preformed
gel beads, using glucono-δ-lactone (GdL) to lower the pH; (ii)
the LMWG was used as a template to spatially control slow calcium
alginate gelation within preformed gel trays, using diphenyliodonium
nitrate (DPIN) as a photoacid to lower the pH, and spatial resolution
was achieved by masking. The dual-network hybrid gels display highly
tunable properties, and the beads are compatible with stem cell growth.
Furthermore, they preserve the LMWG function of inducing in situ silver
nanoparticle (AgNP) formation, which provides the gels with antibacterial
activity. These gels have potential for eventual regenerative medicine
applications in (e.g.) bone tissue engineering.
Collapse
Affiliation(s)
- Carmen C Piras
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Clare S Mahon
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Paul G Genever
- Department of Biology, University of York, Heslington, York YO10 5DD, United Kingdom
| | - David K Smith
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| |
Collapse
|
187
|
Sharma N, Ashil VR, Kumar V, Gore DD, Singh IP, Tikoo K. Bacterial exopolysaccharides-mediated synthesis of polymeric silver nanodots with remarkable wound healing properties. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.04.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
188
|
Wang X, Lee SY, Akter S, Huq MA. Probiotic-Mediated Biosynthesis of Silver Nanoparticles and Their Antibacterial Applications against Pathogenic Strains of Escherichia coli O157:H7. Polymers (Basel) 2022; 14:polym14091834. [PMID: 35567001 PMCID: PMC9103322 DOI: 10.3390/polym14091834] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 11/23/2022] Open
Abstract
The present study aimed to suggest a simple and environmentally friendly biosynthesis method of silver nanoparticles (AgNPs) using the strain Bacillus sonorensis MAHUQ-74 isolated from kimchi. Antibacterial activity and mechanisms of AgNPs against antibiotic-resistant pathogenic strains of Escherichia coli O157:H7 were investigated. The strain MAHUQ-74 had 99.93% relatedness to the B. sonorensis NBRC 101234T strain. The biosynthesized AgNPs had a strong surface plasmon resonance (SPR) peak at 430 nm. The transmission electron microscope (TEM) image shows the spherical shape and size of the synthesized AgNPs is 13 to 50 nm. XRD analysis and SAED pattern revealed the crystal structure of biosynthesized AgNPs. Fourier transform infrared spectroscopy (FTIR) data showed various functional groups associated with the reduction of silver ions to AgNPs. The resultant AgNPs showed strong antibacterial activity against nine E. coli O157:H7 pathogens. Minimum inhibitory concentration (MIC) values of the AgNPs synthesized by strain MAHUQ-74 were 3.12 μg/mL for eight E. coli O157:H7 strains and 12.5 μg/mL for strain E. coli ATCC 25922. Minimum bactericidal concentrations (MBCs) were 25 μg/mL for E. coli O157:H7 ATCC 35150, E. coli O157:H7 ATCC 43895, E. coli O157:H7 ATCC 43890, E. coli O157:H7 ATCC 43889, and E. coli ATCC 25922; and 50 μg/mL for E. coli O157:H7 2257, E. coli O157: NM 3204-92, E. coli O157:H7 8624 and E. coli O157:H7 ATCC 43894. FE-SEM analysis demonstrated that the probiotic-mediated synthesized AgNPs produced structural and morphological changes and destroyed the membrane integrity of pathogenic E. coli O157:H7. Therefore, AgNPs synthesized by strain MAHUQ-74 may be potential antibacterial agents for the control of antibiotic-resistant pathogenic strains of E. coli O157:H7.
Collapse
Affiliation(s)
- Xiaoqing Wang
- Department of Food and Nutrition, College of Biotechnology and Natural Resource, Chung-Ang University, Anseong 17546, Gyeonggi-do, Korea; (X.W.); (S.-Y.L.)
| | - Sun-Young Lee
- Department of Food and Nutrition, College of Biotechnology and Natural Resource, Chung-Ang University, Anseong 17546, Gyeonggi-do, Korea; (X.W.); (S.-Y.L.)
| | - Shahina Akter
- Department of Food Science and Biotechnology, Gachon University, Seongnam 461701, Gyeonggi-do, Korea;
| | - Md. Amdadul Huq
- Department of Food and Nutrition, College of Biotechnology and Natural Resource, Chung-Ang University, Anseong 17546, Gyeonggi-do, Korea; (X.W.); (S.-Y.L.)
- Correspondence: or
| |
Collapse
|
189
|
Gokul Eswaran S, Shahid Afridi P, Vasimalai N. Effective Multi Toxic Dyes Degradation Using Bio-Fabricated Silver Nanoparticles as a Green Catalyst. Appl Biochem Biotechnol 2022; 195:3872-3887. [PMID: 35435586 DOI: 10.1007/s12010-022-03902-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 03/14/2022] [Indexed: 11/25/2022]
Abstract
Herein, we reported the preparation and characterization of silver nanoparticles from Kalanchoe brasiliensis leaves extract and their application in the photocatalytic degradation of Aniline Blue, Toludine Blue, Congo Red, Indigo Carmine, Auramine O, and Pyronin Y dyes. The synthesis of Kalanchoe brasiliensis extract derived silver nanoparticles (KK-AgNPs) was well characterized by several techniques. The surface plasma resonance (SPR) peak of 17 nm sized KK-AgNPs occurred at 445 nm, and the KK-AgNPs were stable for more than five months. Finally, KK-AgNPs were used as a green catalyst for the photocatalytic degradation of the above-mentioned dyes. Interestingly, the KK-AgNPs green catalyst decolorized all six dyes and their mixture. We found high catalytic efficiency up to 86%. Moreover, we used the KK-AgNPs green catalyst to degrade industrial dye effluent water. We also discussed the possible mechanism for the photocatalytic degradation of dyes.
Collapse
Affiliation(s)
- S Gokul Eswaran
- Department of Chemistry, B.S.Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai, 600048, India
| | - P Shahid Afridi
- Department of Chemistry, B.S.Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai, 600048, India
| | - N Vasimalai
- Department of Chemistry, B.S.Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai, 600048, India.
| |
Collapse
|
190
|
Kim H, Kim E, Choi C, Yeo WH. Advances in Soft and Dry Electrodes for Wearable Health Monitoring Devices. MICROMACHINES 2022; 13:mi13040629. [PMID: 35457934 PMCID: PMC9029742 DOI: 10.3390/mi13040629] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 01/20/2023]
Abstract
Electrophysiology signals are crucial health status indicators as they are related to all human activities. Current demands for mobile healthcare have driven considerable interest in developing skin-mounted electrodes for health monitoring. Silver-Silver chloride-based (Ag-/AgCl) wet electrodes, commonly used in conventional clinical practice, provide excellent signal quality, but cannot monitor long-term signals due to gel evaporation and skin irritation. Therefore, the focus has shifted to developing dry electrodes that can operate without gels and extra adhesives. Compared to conventional wet electrodes, dry ones offer various advantages in terms of ease of use, long-term stability, and biocompatibility. This review outlines a systematic summary of the latest research on high-performance soft and dry electrodes. In addition, we summarize recent developments in soft materials, biocompatible materials, manufacturing methods, strategies to promote physical adhesion, methods for higher breathability, and their applications in wearable biomedical devices. Finally, we discuss the developmental challenges and advantages of various dry electrodes, while suggesting research directions for future studies.
Collapse
Affiliation(s)
- Hyeonseok Kim
- Georgia Institute of Technology, George W. Woodruff School of Mechanical Engineering, Atlanta, GA 30332, USA; (H.K.); (E.K.); (C.C.)
- IEN Center for Human-Centric Interfaces and Engineering, Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Eugene Kim
- Georgia Institute of Technology, George W. Woodruff School of Mechanical Engineering, Atlanta, GA 30332, USA; (H.K.); (E.K.); (C.C.)
| | - Chanyeong Choi
- Georgia Institute of Technology, George W. Woodruff School of Mechanical Engineering, Atlanta, GA 30332, USA; (H.K.); (E.K.); (C.C.)
| | - Woon-Hong Yeo
- Georgia Institute of Technology, George W. Woodruff School of Mechanical Engineering, Atlanta, GA 30332, USA; (H.K.); (E.K.); (C.C.)
- IEN Center for Human-Centric Interfaces and Engineering, Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA 30332, USA
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
- Parker H. Petit Institute for Bioengineering and Biosciences, Neural Engineering Center, Institute for Materials, Institute for Robotics and Intelligent Machines, Georgia Institute of Technology, Atlanta, GA 30332, USA
- Correspondence: ; Tel.: +1-404-385-5710
| |
Collapse
|
191
|
Pargari M, Marahel F, Goodajdar BM. Kinetic Spectrophotometric Method and Neural Network Model Application for the Quantitation of Epinephrine by Starch-capped AgNPs Sensor in Blood and Urine. JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1134/s1061934822040074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
192
|
A Nanostructured Cu(II) Coordination Polymer Based on Alanine as a Trifunctional Mimic Enzyme and Efficient Composite in the Detection of Sphingobacteria. Bioinorg Chem Appl 2022; 2022:8788221. [PMID: 35449715 PMCID: PMC9017554 DOI: 10.1155/2022/8788221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/29/2022] [Indexed: 11/18/2022] Open
Abstract
This research raises the potential use of coordination polymers as new useful materials in two essential research fields, allowing the obtaining of a new multiartificial enzyme with the capacity to inhibit the growth of bacteria resistance. The fine selection of the ligands allows the design of a new 2D coordination polymer (CP), with the formula [Cu2(IBA)2(OH2)4]n·6nH2O, by the combination of Cu (II) as the metal center with a pseudoamino acid (H2IBA = isophthaloyl bis β-alanine). Quantitative total X-ray fluorescence (TXRF) analyses show that the obtained CP can gradually release Cu (II) ions. Additionally, this CP can be nanoprocessed and transformed into a metal-organic gel (MOG) by using different Cu (II) salt concentrations and the application of ultrasounds. Considering its nanometric dimensions, the slow Cu (II) release and its simple processability, its performance as an artificial enzyme, and its antibacterial ability were explored. The results obtained show the first nanocoordination polymer acting as an artificial multienzyme (peroxidase, catalase, and superoxodismutase) exhibiting antibacterial activity in the presence of hydrogen peroxide, with selective behavior for three bacterium strains (S. spiritovirum, A. faecales, and B. cereus). Indeed, this CP shows a more robust inhibition capacity for Sphingobacterium. Going beyond that, as there are no comfortable and practically clinical tests capable of detecting the presence of Sphingobacteria, the compound can be easily embedded to form moldable gelatin that will facilitate the handling and low-cost commercial kits.
Collapse
|
193
|
Farshori NN, Al-Oqail MM, Al-Sheddi ES, Al-Massarani SM, Saquib Q, Siddiqui MA, Wahab R, Al-Khedhairy AA. Green synthesis of silver nanoparticles using Phoenix dactylifera seed extract and its anticancer effect against human lung adenocarcinoma cells. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103260] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
194
|
Ecofriendly synthesis of silver nanoparticles using Kei-apple (Dovyalis caffra) fruit and their efficacy against cancer cells and clinical pathogenic microorganisms. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103927] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
|
195
|
Chandra Joshi H, Dutta D, Gaur N, Singh G, Dubey R, Dwivedi S. Silver-doped active carbon spheres and their application for microbial decontamination of water. Heliyon 2022; 8:e09209. [PMID: 35399375 PMCID: PMC8983378 DOI: 10.1016/j.heliyon.2022.e09209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 08/09/2021] [Accepted: 03/25/2022] [Indexed: 11/02/2022] Open
Abstract
Highly efficient and durable, silver nanoparticles doped Active Carbon Spheres ACS(Ag) were synthesized by carbonization and activation of silver exchanged resins. The silver exchanged resins were prepared by exchanging H+ ions of polystyrene sulphonate resin with Ag+ ions of silver nitrate (AgNO3). The quantity of Ag+ in the spheres was controlled by varying the concentration of AgNO3, from 0.0125 to 0.1 M. With increasing molar concentration of AgNO3, the effective intake of Ag+ by the sphere increases from 1.1 to 8.1 weight percent (wt %). For activation, the spheres were incubated in the CO2 atmosphere for 6 h at fixed soaking temperature i.e. 1123 K. The characterization of synthesized silver doped ACS was performed by using different sophisticated instrumental techniques. The antimicrobial activity of silver doped ACS was studied against different bacterial strains like, E. coli, B. subtilis and Staphylococcus aureus. The study demonstrated that the zone of inhibition for E. coli was 16.9 ± 0.7 mm while for B. subtilis it was 17.1 ± 0.3 mm at a concentration of 8 mg of synthesized material. In addition, satisfactory results were obtained in shake flask and filtration test experiments also, even at a low concentration of 2 mg, showing growth inhibition of 94% for E. coli and 93% for B. subtilis. When the concentration of silver doped ACS was increased to 8 mg, complete removal of both the bacteria was observed after 24 h (100 % reduction for E. coli and B. subtilis). Furthermore, when silver doped ACS was tested against Staphylococcus aureus according to ASTM:E 2149-01 method, biocidal activity of up to 73% was observed. Therefore, the silver doped ACS can be considered as a potential biocidal material for the studied bacterial strains and hence find suitable application for decontamination of water. Novel low-density silver doped active carbon spheres (ACS) were synthesized successfully. Characterization and antibacterial activity was examined for water decontamination application. Results revealed that the material effectively reduced microbial load by 99.9 %.
Collapse
|
196
|
Maleki Dizaj S, Salatin S, Khezri K, Lee JY, Lotfipour F. Targeting Multidrug Resistance With Antimicrobial Peptide-Decorated Nanoparticles and Polymers. Front Microbiol 2022; 13:831655. [PMID: 35432230 PMCID: PMC9009044 DOI: 10.3389/fmicb.2022.831655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/09/2022] [Indexed: 01/21/2023] Open
Abstract
As a category of small peptides frequently found in nature, antimicrobial peptides (AMPs) constitute a major part of the innate immune system of various organisms. Antimicrobial peptides feature various inhibitory effects against fungi, bacteria, viruses, and parasites. Due to the increasing concerns of antibiotic resistance among microorganisms, development of antimicrobial peptides is an emerging tool as a favorable applicability prospect in food, medicine, aquaculture, animal husbandry, and agriculture. This review presents the latest research progress made in the field of antimicrobial peptides, such as their mechanism of action, classification, application status, design techniques, and a review on decoration of nanoparticles and polymers with AMPs that are used in treating multidrug resistance. Lastly, we will highlight recent progress in antiviral peptides to treat emerging viral diseases (e.g., anti-coronavirus peptides) and discuss the outlook of AMP applications.
Collapse
Affiliation(s)
- Solmaz Maleki Dizaj
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Dental Biomaterials, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sara Salatin
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Khadijeh Khezri
- Deputy of Food and Drug Administration, Urmia University of Medical Sciences, Urmia, Iran
| | - Jyh-Yeuan Lee
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Farzaneh Lotfipour
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Food and Drug Safety Research Center, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
197
|
Burdușel AC, Gherasim O, Andronescu E, Grumezescu AM, Ficai A. Inorganic Nanoparticles in Bone Healing Applications. Pharmaceutics 2022; 14:pharmaceutics14040770. [PMID: 35456604 PMCID: PMC9027776 DOI: 10.3390/pharmaceutics14040770] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/24/2022] [Accepted: 03/28/2022] [Indexed: 12/13/2022] Open
Abstract
Modern biomedicine aims to develop integrated solutions that use medical, biotechnological, materials science, and engineering concepts to create functional alternatives for the specific, selective, and accurate management of medical conditions. In the particular case of tissue engineering, designing a model that simulates all tissue qualities and fulfills all tissue requirements is a continuous challenge in the field of bone regeneration. The therapeutic protocols used for bone healing applications are limited by the hierarchical nature and extensive vascularization of osseous tissue, especially in large bone lesions. In this regard, nanotechnology paves the way for a new era in bone treatment, repair and regeneration, by enabling the fabrication of complex nanostructures that are similar to those found in the natural bone and which exhibit multifunctional bioactivity. This review aims to lay out the tremendous outcomes of using inorganic nanoparticles in bone healing applications, including bone repair and regeneration, and modern therapeutic strategies for bone-related pathologies.
Collapse
Affiliation(s)
- Alexandra-Cristina Burdușel
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1–7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (A.-C.B.); (O.G.); (A.M.G.); (A.F.)
| | - Oana Gherasim
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1–7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (A.-C.B.); (O.G.); (A.M.G.); (A.F.)
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 409 Atomiștilor Street, 077125 Magurele, Romania
| | - Ecaterina Andronescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1–7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (A.-C.B.); (O.G.); (A.M.G.); (A.F.)
- Academy of Romanian Scientists, 3 Ilfov Street, 050044 Bucharest, Romania
- Correspondence:
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1–7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (A.-C.B.); (O.G.); (A.M.G.); (A.F.)
- Academy of Romanian Scientists, 3 Ilfov Street, 050044 Bucharest, Romania
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 90–92 Panduri Road, 050657 Bucharest, Romania
| | - Anton Ficai
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1–7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (A.-C.B.); (O.G.); (A.M.G.); (A.F.)
- Academy of Romanian Scientists, 3 Ilfov Street, 050044 Bucharest, Romania
| |
Collapse
|
198
|
Tripathi N, Goshisht MK. Recent Advances and Mechanistic Insights into Antibacterial Activity, Antibiofilm Activity, and Cytotoxicity of Silver Nanoparticles. ACS APPLIED BIO MATERIALS 2022; 5:1391-1463. [PMID: 35358388 DOI: 10.1021/acsabm.2c00014] [Citation(s) in RCA: 60] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The substantial increase in multidrug-resistant (MDR) pathogenic bacteria is a major threat to global health. Recently, the Centers for Disease Control and Prevention reported possibilities of greater deaths due to bacterial infections than cancer. Nanomaterials, especially small-sized (size ≤10 nm) silver nanoparticles (AgNPs), can be employed to combat these deadly bacterial diseases. However, high reactivity, instability, susceptibility to fast oxidation, and cytotoxicity remain crucial shortcomings for their uptake and clinical application. In this review, we discuss various AgNPs-based approaches to eradicate bacterial infections and provide comprehensive mechanistic insights and recent advances in antibacterial activity, antibiofilm activity, and cytotoxicity (both in vitro and in vivo) of AgNPs. The mechanistic of antimicrobial activity involves four steps: (i) adhesion of AgNPs to cell wall/membrane and its disruption; (ii) intracellular penetration and damage; (iii) oxidative stress; and (iv) modulation of signal transduction pathways. Numerous factors affecting the bactericidal activity of AgNPs such as shape, size, crystallinity, pH, and surface coating/charge have also been described in detail. The review also sheds light on antimicrobial photodynamic therapy and the role of AgNPs versus Ag+ ions release in bactericidal activities. In addition, different methods of synthesis of AgNPs have been discussed in brief.
Collapse
Affiliation(s)
- Neetu Tripathi
- Department of Chemistry, Guru Nanak Dev University, Amritsar, Punjab 143005, India
| | - Manoj Kumar Goshisht
- Department of Chemistry, Government Naveen College Tokapal, Bastar, Chhattisgarh 494442, India
| |
Collapse
|
199
|
Abstract
Due to the development of high-tech industries, the modern world is characterized by the increased production and consumption of nanoparticles (NPs) and nanomaterials. Among produced metal nanoparticles, silver nanoparticles are widely used in everyday life products, cosmetics, and medicine. It has already been established that, in nanoscale form, many even inert materials become toxic. Therefore, the study of the toxicity of various substances in nanoscale form is an urgent scientific task. There is now a body of experience on the toxic effect of AgNPs. In the present review, the most well-known results obtained over the 2009–2021 period, including the own performance on the toxicity of silver NPs, are collected and analyzed. Along with the data reporting a certain level of toxicity of silver NPs, experiments that did not reveal any obvious toxicity of nanosized forms of silver are discussed. According to the performed studies, the toxicity of silver NPs is often caused not by NPs themselves but by silver ions, compounds used for nanoparticle stabilization, and other reasons. Based on the analysis of the collected data, it can be concluded that at actual levels of silver NPs used in everyday life, workplace, and medicine, they will not have strong toxic effects on a healthy adult body.
Collapse
|
200
|
Girija AR, Balasubramanian S, Cowin AJ. Nanomaterials-based drug delivery approaches for wound healing. Curr Pharm Des 2022; 28:711-726. [DOI: 10.2174/1381612828666220328121211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 02/11/2022] [Indexed: 11/22/2022]
Abstract
Abstract:
Wound healing is a complex and dynamic process that requires intricate synchronization between multiple cell types within appropriate extracellular microenvironment. Wound healing process involves four overlapping phases in a precisely regulated manner, consisting of hemostasis, inflammation, proliferation, and maturation. For an effective wound healing all four phases must follow in a sequential pattern within a time frame. Several factors might interfere with one or more of these phases in healing process, thus causing improper or impaired wound healing resulting in non-healing chronic wounds. The complications associated with chronic non-healing wounds, along with the limitations of existing wound therapies, have led to the development and emergence of novel and innovative therapeutic interventions. Nanotechnology presents unique and alternative approaches to accelerate the healing of chronic wounds by the interaction of nanomaterials during different phases of wound healing. This review focuses on recent innovative nanotechnology-based strategies for wound healing and tissue regeneration based on nanomaterials, including nanoparticles, nanocomposites and scaffolds. The efficacy of the intrinsic therapeutic potential of nanomaterials (including silver, gold, zinc oxide, copper, cerium oxide, etc.) and the ability of nanomaterials as carriers (liposomes, hydrogels, polymeric nanomaterials, nanofibers) as therapeutic agents associated with wound-healing applications have also been addressed. The significance of these nanomaterial-based therapeutic interventions for wound healing needs to be highlighted to engage researchers and clinicians towards this new and exciting area of bio-nanoscience. We believe that these recent developments will offer researchers an updated source on the use of nanomaterials as an advanced approach to improve wound healing.
Collapse
|