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Mitra S, Das A, Sen S, Mahanty B. Potential of metabolic engineering in bacterial nanosilver synthesis. World J Microbiol Biotechnol 2018; 34:138. [DOI: 10.1007/s11274-018-2522-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 08/20/2018] [Indexed: 10/28/2022]
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Hanan NA, Chiu HI, Ramachandran MR, Tung WH, Mohamad Zain NN, Yahaya N, Lim V. Cytotoxicity of Plant-Mediated Synthesis of Metallic Nanoparticles: A Systematic Review. Int J Mol Sci 2018; 19:E1725. [PMID: 29891772 PMCID: PMC6032206 DOI: 10.3390/ijms19061725] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 05/14/2018] [Accepted: 05/16/2018] [Indexed: 01/11/2023] Open
Abstract
In the field of medicine, nanomaterials, especially those derived using the green method, offer promise as anti-cancer agents and drug carriers. However, the biosafety of metallic nanoparticles used as anti-cancer agents remains a concern. The goal of this systematic review was to compare the cytotoxicity of different plant-mediated syntheses of metallic nanoparticles based on their potency, therapeutic index, and cancer cell type susceptibility in the hopes of identifying the most promising anti-cancer agents. A literature search of electronic databases including Science Direct, PubMed, Springer Link, Google Scholar, and ResearchGate, was conducted to obtain research articles. Keywords such as biosynthesis, plant synthesis, plant-mediated, metallic nanoparticle, cytotoxicity, and anticancer were used in the literature search. All types of research materials that met the inclusion criteria were included in the study regardless of whether the results were positive, negative, or null. The therapeutic index was used as a safety measure for the studied compound of interest. Data from 76 selected articles were extracted and synthesised. Seventy-two studies reported that the cytotoxicity of plant-mediated synthesis of metallic nanoparticles was time and/or dose-dependent. Biosynthesised silver nanoparticles demonstrated higher cytotoxicity potency compared to gold nanoparticles synthesised by the same plants (Plumbago zeylanica, Commelina nudiflora, and Cassia auriculata) irrespective of the cancer cell type tested. This review also identified a correlation between the nanoparticle size and morphology with the potency of cytotoxicity. Cytotoxicity was found to be inversely proportional to nanoparticle size. The plant-mediated syntheses of metallic nanoparticles were predominantly spherical or quasi-spherical, with the median lethal dose of 1⁻20 µg/mL. Nanoparticles with other shapes (triangular, hexagonal, and rods) were less potent. Metallic nanoparticles synthesised by Abutilon inducum, Butea monosperma, Gossypium hirsutum, Indoneesiella echioides, and Melia azedarach were acceptably safe as anti-cancer agents, as they had a therapeutic index of >2.0 when tested on both cancer cells and normal human cells. Most plant-mediated syntheses of metallic nanoparticles were found to be cytotoxic, although some were non-cytotoxic. The results from this study suggest a focus on a selected list of potential anti-cancer agents for further investigations of their pharmacodynamic/toxicodynamic and pharmacokinetic/toxicokinetic actions with the goal of reducing the Global Burden of Diseases and the second leading cause of mortality.
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Affiliation(s)
- Nurul Akma Hanan
- Active Pharmaceutical Ingredient (API) Section, Centre of Product Registration, National Pharmaceutical Regulatory Agency (NPRA), Lot 36, Jalan Universiti, 46200 Petaling Jaya, Malaysia.
| | - Hock Ing Chiu
- Integrative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, 13200 Bertam, Penang, Malaysia.
| | | | - Wai Hau Tung
- School of Pharmacy, University of Nottingham Malaysia Campus, Jalan Broga, Semenyih 43500, Malaysia.
| | - Nur Nadhirah Mohamad Zain
- Integrative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, 13200 Bertam, Penang, Malaysia.
| | - Noorfatimah Yahaya
- Integrative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, 13200 Bertam, Penang, Malaysia.
| | - Vuanghao Lim
- Integrative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, 13200 Bertam, Penang, Malaysia.
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Prabukumar S, Rajkuberan C, Sathishkumar G, Illaiyaraja M, Sivaramakrishnan S. One pot green fabrication of metallic silver nanoscale materials using Crescentia cujete L. and assessment of their bactericidal activity. IET Nanobiotechnol 2018; 12:505-508. [PMID: 29768238 PMCID: PMC8676202 DOI: 10.1049/iet-nbt.2017.0209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 12/11/2017] [Accepted: 12/21/2017] [Indexed: 01/06/2024] Open
Abstract
In this study, the leaf extract of an important medicinal plant Crescentia cujete L. (CC) was employed as a green reducing agent to synthesise highly-stable C. cujete silver nanoparticles (CCAgNPs). The reduction of Ag+ to Ag0 nanoparticles was initially observed by a colour change which generates an intense surface plasmon resonance peak at 417 nm using a UV-Vis spectrophotometer. Various optimisation factors such as temperature, pH, time and the stoichiometric proportion of the reaction mixture were performed, which influence the size, dispersity and synthesis rate of CCAgNPs. In addition, surface chemistry of synthesised CCAgNPs through Fourier transform infrared spectroscopy reveals the reducing/stabilising agent present in the aqueous extract of C. cujete and synthesised CCAgNPs. Transmission electron microscopy analysis features the spherical shape of CCAgNPs with an average size of 39.74 nm. Furthermore, an X-ray diffraction study confirms that the synthesised CCAgNPs were face-centred cubic crystalline in nature. The CCAgNPs display tremendous bactericidal activity against human pathogens Bacillus subtilis, Staphylococcus epidermidis, Rhodococcus rhodochrous, Salmonella typhi, Mycobacterium smegmatis, Shigella flexneri and Vibrio cholerae via penetrating into the bacterial cell membrane and causing failure of an internal chain reaction.
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Affiliation(s)
- Seetharaman Prabukumar
- Department of Biotechnology, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | | | | | - Mani Illaiyaraja
- Department of Biotechnology, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
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Khan AU, Yuan Q, Khan ZUH, Ahmad A, Khan FU, Tahir K, Shakeel M, Ullah S. An eco-benign synthesis of AgNPs using aqueous extract of Longan fruit peel: Antiproliferative response against human breast cancer cell line MCF-7, antioxidant and photocatalytic deprivation of methylene blue. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 183:367-373. [DOI: 10.1016/j.jphotobiol.2018.05.007] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 05/02/2018] [Accepted: 05/05/2018] [Indexed: 01/17/2023]
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55
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Goyal S, Gupta N, Kumar A, Chatterjee S, Nimesh S. Antibacterial, anticancer and antioxidant potential of silver nanoparticles engineered using Trigonella foenum-graecum seed extract. IET Nanobiotechnol 2018; 12:526-533. [PMID: 29768242 PMCID: PMC8676058 DOI: 10.1049/iet-nbt.2017.0089] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 11/30/2017] [Accepted: 12/30/2017] [Indexed: 01/11/2023] Open
Abstract
In this study, the authors report a simple and eco-friendly method for the synthesis of silver nanoparticles (AgNPs) using Trigonella foenum-graecum (TFG) seed extract. They explored several parameters dictating the biosynthesis of TFG-AgNPs such as reaction time, temperature, concentration of AgNO3, and TFG extract amount. Physicochemical characterisation of TFG-AgNPs was done on dynamic light scattering (DLS), field emission electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction and Fourier transform infrared spectroscopy. The size determination studies using DLS revealed of TFG-AgNPs size between 95 and 110 nm. The antibacterial activity was studied against Escherichia coli, Proteus vulgaris, Pseudomonas aeruginosa and Staphylococcus aureus. The biosynthesised TFG-AgNPs showed remarkable anticancer efficacy against skin cancer cell line, A431 and also exhibited significant antioxidant efficacy.
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Affiliation(s)
- Shivangi Goyal
- Department of Biotechnology, The IIS University, Gurukul Marg, SFS, Mansarovar, Jaipur 302020 Rajasthan, India
| | - Nidhi Gupta
- Department of Biotechnology, The IIS University, Gurukul Marg, SFS, Mansarovar, Jaipur 302020 Rajasthan, India
| | - Ajeet Kumar
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699-5814, USA
| | - Sreemoyee Chatterjee
- Department of Biotechnology, The IIS University, Gurukul Marg, SFS, Mansarovar, Jaipur 302020 Rajasthan, India
| | - Surendra Nimesh
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, Ajmer 305817, India.
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Švecová M, Ulbrich P, Dendisová M, Matějka P. SERS study of riboflavin on green-synthesized silver nanoparticles prepared by reduction using different flavonoids: What is the role of flavonoid used? SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 195:236-245. [PMID: 29428644 DOI: 10.1016/j.saa.2018.01.083] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 01/24/2018] [Accepted: 01/31/2018] [Indexed: 06/08/2023]
Abstract
Spectroscopy of surface-enhanced Raman scattering (SERS) is nowadays widely used in the field of bio-science and medicine. These applications require new enhancing substrates with special properties. They should be non-toxic, environmentally friendly and (bio-) compatible with examined samples. Flavonoids are natural antioxidants with many positive effects on human health. Simultaneously, they can be used as reducing agent in preparation procedure of plasmonic enhancing substrate for SERS spectroscopy. The best amplifiers of Raman vibrational spectroscopic signal are generally silver nanoparticles (AgNPs). In this study, several flavonoids (forming a logical set) were used as reducing agent in AgNPs preparation procedures. Reactivity of 10 structurally arranged flavonoids (namely flavone, chrysin, apigenin, luteolin, tricetin, 3-hydroxyflavone, galangin, kaempferol, quercetin and myricetin) was compared and SERS-activity of prepared AgNPs was tested using model analyte riboflavin. Riboflavin was detected down to concentration 10-9mol/l.
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Affiliation(s)
- Marie Švecová
- Department of Analytical Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague, Czech Republic.
| | - Pavel Ulbrich
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 5, Prague, Czech Republic
| | - Marcela Dendisová
- Department of Physical Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague, Czech Republic
| | - Pavel Matějka
- Department of Physical Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague, Czech Republic
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57
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Francis S, Koshy EP, Mathew B. Green synthesis of Stereospermum suaveolens capped silver and gold nanoparticles and assessment of their innate antioxidant, antimicrobial and antiproliferative activities. Bioprocess Biosyst Eng 2018; 41:939-951. [DOI: 10.1007/s00449-018-1925-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 03/16/2018] [Indexed: 12/27/2022]
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58
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Senapati S, Mahanta AK, Kumar S, Maiti P. Controlled drug delivery vehicles for cancer treatment and their performance. Signal Transduct Target Ther 2018; 3:7. [PMID: 29560283 PMCID: PMC5854578 DOI: 10.1038/s41392-017-0004-3] [Citation(s) in RCA: 1096] [Impact Index Per Article: 182.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 11/16/2017] [Accepted: 12/06/2017] [Indexed: 12/14/2022] Open
Abstract
Although conventional chemotherapy has been successful to some extent, the main drawbacks of chemotherapy are its poor bioavailability, high-dose requirements, adverse side effects, low therapeutic indices, development of multiple drug resistance, and non-specific targeting. The main aim in the development of drug delivery vehicles is to successfully address these delivery-related problems and carry drugs to the desired sites of therapeutic action while reducing adverse side effects. In this review, we will discuss the different types of materials used as delivery vehicles for chemotherapeutic agents and their structural characteristics that improve the therapeutic efficacy of their drugs and will describe recent scientific advances in the area of chemotherapy, emphasizing challenges in cancer treatments. Improving the delivery of cancer therapies to tumor sites is crucial to reduce unwanted side effects and patient mortality rates. Pralay Maiti and colleagues at the Indian Institute of Technology in Varanasi, India, review the latest developments in drug delivery vehicles and treatment approaches designed to enhance the effectiveness of current cancer therapies. New nanoparticle-based carriers, hydrogels and hybrid materials that offer controlled and sustained drug release are showing great promise in animal models. Furthermore, materials that respond to stimuli such as heat, light, magnetic or electric fields are also being tested to aid target-specific drug delivery and, thus, avoid damage to healthy tissues. Although there are some challenges in translating these findings to the clinic, there is no doubt that technological advances are shaping better and safer treatment options.
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Affiliation(s)
- Sudipta Senapati
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Arun Kumar Mahanta
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Sunil Kumar
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Pralay Maiti
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
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59
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Siddiqi KS, Husen A, Rao RAK. A review on biosynthesis of silver nanoparticles and their biocidal properties. J Nanobiotechnology 2018; 16:14. [PMID: 29452593 PMCID: PMC5815253 DOI: 10.1186/s12951-018-0334-5] [Citation(s) in RCA: 488] [Impact Index Per Article: 81.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 01/19/2018] [Indexed: 12/21/2022] Open
Abstract
Use of silver and silver salts is as old as human civilization but the fabrication of silver nanoparticles (Ag NPs) has only recently been recognized. They have been specifically used in agriculture and medicine as antibacterial, antifungal and antioxidants. It has been demonstrated that Ag NPs arrest the growth and multiplication of many bacteria such as Bacillus cereus, Staphylococcus aureus, Citrobacter koseri, Salmonella typhii, Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumonia, Vibrio parahaemolyticus and fungus Candida albicans by binding Ag/Ag+ with the biomolecules present in the microbial cells. It has been suggested that Ag NPs produce reactive oxygen species and free radicals which cause apoptosis leading to cell death preventing their replication. Since Ag NPs are smaller than the microorganisms, they diffuse into cell and rupture the cell wall which has been shown from SEM and TEM images of the suspension containing nanoparticles and pathogens. It has also been shown that smaller nanoparticles are more toxic than the bigger ones. Ag NPs are also used in packaging to prevent damage of food products by pathogens. The toxicity of Ag NPs is dependent on the size, concentration, pH of the medium and exposure time to pathogens.
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Affiliation(s)
| | - Azamal Husen
- Department of Biology, College of Natural and Computational Sciences, University of Gondar, P.O. Box # 196, Gondar, Ethiopia
| | - Rifaqat A. K. Rao
- Department of Applied Chemistry, Zakir Husain College of Engineering and Technology, Aligarh Muslim University, Aligarh, Uttar Pradesh 202002 India
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60
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Ullah Khan S, Saleh TA, Wahab A, Khan MHU, Khan D, Ullah Khan W, Rahim A, Kamal S, Ullah Khan F, Fahad S. Nanosilver: new ageless and versatile biomedical therapeutic scaffold. Int J Nanomedicine 2018; 13:733-762. [PMID: 29440898 PMCID: PMC5799856 DOI: 10.2147/ijn.s153167] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Silver nanotechnology has received tremendous attention in recent years, owing to its wide range of applications in various fields and its intrinsic therapeutic properties. In this review, an attempt is made to critically evaluate the chemical, physical, and biological synthesis of silver nanoparticles (AgNPs) as well as their efficacy in the field of theranostics including microbiology and parasitology. Moreover, an outlook is also provided regarding the performance of AgNPs against different biological systems such as bacteria, fungi, viruses, and parasites (leishmanial and malarial parasites) in curing certain fatal human diseases, with a special focus on cancer. The mechanism of action of AgNPs in different biological systems still remains enigmatic. Here, due to limited available literature, we only focused on AgNPs mechanism in biological systems including human (wound healing and apoptosis), bacteria, and viruses which may open new windows for future research to ensure the versatile application of AgNPs in cosmetics, electronics, and medical fields.
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Affiliation(s)
- Shahid Ullah Khan
- College of Plant Sciences and Technology
- National Key Laboratory of Crop Genetics Improvement, Huazhong Agricultural University, Wuhan, People’s Republic of China
| | - Tawfik A Saleh
- Department of Chemistry, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
| | - Abdul Wahab
- Department of Pharmacy, Kohat University of Science and Technology, Kohat
| | - Muhammad Hafeez Ullah Khan
- College of Plant Sciences and Technology
- National Key Laboratory of Crop Genetics Improvement, Huazhong Agricultural University, Wuhan, People’s Republic of China
| | - Dilfaraz Khan
- Institute of Chemical Sciences, Gomal University, Dera Ismail Khan, Pakistan
| | - Wasim Ullah Khan
- School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Abdur Rahim
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Sajid Kamal
- School of Biotechnology, Jiangnan University, Wuxi, People’s Republic of China
| | - Farman Ullah Khan
- Department of Chemistry, University of Science and Technology, Bannu
| | - Shah Fahad
- College of Plant Sciences and Technology
- Department of Agriculture, University of Swabi, Swabi, Pakistan
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61
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Souza LRR, da Silva VS, Franchi LP, de Souza TAJ. Toxic and Beneficial Potential of Silver Nanoparticles: The Two Sides of the Same Coin. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1048:251-262. [DOI: 10.1007/978-3-319-72041-8_15] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Gopinath V, Priyadarshini S, Loke MF, Arunkumar J, Marsili E, MubarakAli D, Velusamy P, Vadivelu J. Biogenic synthesis, characterization of antibacterial silver nanoparticles and its cell cytotoxicity. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2015.11.011] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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63
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In vitro cytotoxicity study of dual drug loaded chitosan/palladium nanocomposite towards HT-29 cancer cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:1399-1410. [DOI: 10.1016/j.msec.2017.03.058] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 01/04/2017] [Accepted: 03/03/2017] [Indexed: 11/18/2022]
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64
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Toxicity of Camellia sinensis-Fabricated Silver Nanoparticles on Invertebrate and Vertebrate Organisms: Morphological Abnormalities and DNA Damages. J CLUST SCI 2017. [DOI: 10.1007/s10876-017-1201-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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65
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Eric CA, Benjamín V, Monica C, Mario AC, Francisco DM, Rogelio AR, Navor R, Jose MB. Silver nanoparticles biosynthesized by secondary metabolites from Moringa oleifera stem and their antimicrobial properties. ACTA ACUST UNITED AC 2017. [DOI: 10.5897/ajb2016.15840] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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66
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Sri Ramkumar SR, Sivakumar N, Selvakumar G, Selvankumar T, Sudhakar C, Ashokkumar B, Karthi S. Green synthesized silver nanoparticles from Garcinia imberti bourd and their impact on root canal pathogens and HepG2 cell lines. RSC Adv 2017. [DOI: 10.1039/c6ra28328d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanoparticle biosynthesis using the extract of medicinal plants in a non-hazardous mode has gained wide attention for various applications in nanomedicine.
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Affiliation(s)
| | - N. Sivakumar
- Department of Molecular Microbiology
- School of Biotechnology
- Madurai Kamaraj University
- Madurai 625 021
- India
| | - G. Selvakumar
- Department of Microbiology
- Alagappa University
- Karaikudi 630003
- India
| | - T. Selvankumar
- PG & Research Department of Biotechnology
- Mahendra Arts and Science College (Autonomous)
- Namakkal 637 501
- India
| | - C. Sudhakar
- PG & Research Department of Biotechnology
- Mahendra Arts and Science College (Autonomous)
- Namakkal 637 501
- India
| | - B. Ashokkumar
- Department of Genetic Engineering
- School of Biotechnology
- Madurai Kamaraj University
- Madurai 625 021
- India
| | - S. Karthi
- Department of Genetic Engineering
- School of Biotechnology
- Madurai Kamaraj University
- Madurai 625 021
- India
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67
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Midya L, Pal A, Pal S. Development of Crosslinked Chitosan/Au Nanocomposite, Its Characterization and Application towards Solar Light Driven Photocatalytic Degradation of Toxic Organic Compounds. ChemistrySelect 2016. [DOI: 10.1002/slct.201601337] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Lipi Midya
- Polymer Chemistry Laboratory; Department of Applied Chemistry; Indian Institute of Technology (ISM), Dhanbad; Dhanbad- 826004 India
| | - Aniruddha Pal
- Polymer Chemistry Laboratory; Department of Applied Chemistry; Indian Institute of Technology (ISM), Dhanbad; Dhanbad- 826004 India
| | - Sagar Pal
- Polymer Chemistry Laboratory; Department of Applied Chemistry; Indian Institute of Technology (ISM), Dhanbad; Dhanbad- 826004 India
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E A K N, S D, Narayanan V, A S. Chitosan stabilized Ag-Au nanoalloy for colorimetric sensing and 5-Fluorouracil delivery. Int J Biol Macromol 2016; 95:862-872. [PMID: 27773838 DOI: 10.1016/j.ijbiomac.2016.10.066] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 10/15/2016] [Accepted: 10/19/2016] [Indexed: 01/28/2023]
Abstract
Fluorescent CS/Ag-Au (chitosan/silver-gold) nanocomposite containing different weight percentage of Ag and Au was synthesized using the chemical reduction method. 5-Fluorouracil (5-FU) encapsulated nanocomposite was also synthesized and its cytotoxicity towards breast cancer cell lines (MCF-7) studied. The XRD pattern of the nanocomposite shows peaks of chitosan, silver and gold. The peaks corresponding to gold and silver indicate the face centered cubic structure of silver and gold nanoparticles. The polymer matrix nanocomposite structure with chitosan as the matrix and silver-gold as the filler phase is evident from the high resolution transmission electron microscopy (HRTEM) images and an increase in particle size from∼5nm to about 12nm is noticeable on encapsulation of 5-Fluorouracil (5-FU). The presence of fluorine in the case of 5-FU encapsulated nanocomposite and the presence of reflections corresponding to 5-FU in the SAED pattern confirms the encapsulation of 5-FU into the nanocomposite, which is also confirmed by elemental mapping. The presence of a single surface plasmon resonance (SPR) peak in the case of the nanocomposite in a position in between the SPR bands of pure silver and gold nanoparticles confirms the formation of Ag-Au alloy and the elemental mapping results obtained for the nanocomposite also supports the UV-vis results. The photoluminescence (PL) spectrum clearly shows an emission peak in the near infrared region (700-900nm), which makes the nanocomposite suitable for use in cellular imaging. The application of the nanocomposite as a colorimetric sensor was also studied and it was found to be useful for the specific detection of mercury (Hg) without much interference and the detection limit was found to be 5.0×10-8M.
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Affiliation(s)
- Nivethaa E A K
- Material Science Centre, Department of Nuclear Physics, University of Madras, Guindy Campus, Chennai-25, India
| | - Dhanavel S
- Material Science Centre, Department of Nuclear Physics, University of Madras, Guindy Campus, Chennai-25, India
| | - V Narayanan
- Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai 600025, India
| | - Stephen A
- Material Science Centre, Department of Nuclear Physics, University of Madras, Guindy Campus, Chennai-25, India.
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Golinska P, Rathod D, Wypij M, Gupta I, Składanowski M, Paralikar P, Dahm H, Rai M. Mycoendophytes as efficient synthesizers of bionanoparticles: nanoantimicrobials, mechanism, and cytotoxicity. Crit Rev Biotechnol 2016; 37:765-778. [PMID: 27748137 DOI: 10.1080/07388551.2016.1235011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Mycoendophytes are the fungi that occur inside the plant tissues without exerting any negative impact on the host plant. They are most frequently isolated endophytes from the leaf, stem, and root tissues of various plants. Among all fungi, the mycoendophytes as biosynthesizer of noble metal nanoparticles (NPs) are less known. However, some reports showing efficient synthesis of metal nanoparticles, mainly silver nanoparticles and its remarkable antimicrobial activity against bacterial and fungal pathogens of humans and plants. The nanoparticles synthesized from mycoendophytes present stability, polydispersity, and biocompatibility. These are non-toxic to humans and environment, can be gained in an easy and cost-effective manner, have wide applicability and could be explored as promising candidates for a variety of biomedical, pharmaceutical, and agricultural applications. Mycogenic silver nanoparticles have also demonstrated cytotoxic activity against cancer cell lines and may prove to be a promising anticancer agent. The present review focuses on the biological synthesis of metal nanoparticles from mycoendophytes and their application in medicine. In addition, different mechanisms of biosynthesis and activity of nanoparticles on microbial cells, as well as toxicity of these mycogenic metal nanoparticles, have also been discussed.
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Affiliation(s)
- Patrycja Golinska
- a Department of Microbiology , Nicolaus Copernicus University , Torun , Poland
| | - Dnyaneshwar Rathod
- a Department of Microbiology , Nicolaus Copernicus University , Torun , Poland.,b Nanobiotechnology Lab, Department of Biotechnology , SGB Amravati University , Amravati , Maharashtra , India
| | - Magdalena Wypij
- a Department of Microbiology , Nicolaus Copernicus University , Torun , Poland
| | - Indarchand Gupta
- b Nanobiotechnology Lab, Department of Biotechnology , SGB Amravati University , Amravati , Maharashtra , India.,c Department of Biotechnology , Institute of Science , Aurangabad , Maharashtra , India
| | - Marek Składanowski
- a Department of Microbiology , Nicolaus Copernicus University , Torun , Poland
| | - Priti Paralikar
- b Nanobiotechnology Lab, Department of Biotechnology , SGB Amravati University , Amravati , Maharashtra , India
| | - Hanna Dahm
- a Department of Microbiology , Nicolaus Copernicus University , Torun , Poland
| | - Mahendra Rai
- b Nanobiotechnology Lab, Department of Biotechnology , SGB Amravati University , Amravati , Maharashtra , India
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Malaikozhundan B, Vaseeharan B, Vijayakumar S, Sudhakaran R, Gobi N, Shanthini G. Antibacterial and antibiofilm assessment of Momordica charantia fruit extract coated silver nanoparticle. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2016. [DOI: 10.1016/j.bcab.2016.09.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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71
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Ultrasonic-assisted green synthesis of flower like silver nanocolloids using marine sponge extract and its effect on oral biofilm bacteria and oral cancer cell lines. Microb Pathog 2016; 99:135-141. [DOI: 10.1016/j.micpath.2016.08.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Revised: 08/18/2016] [Accepted: 08/18/2016] [Indexed: 01/02/2023]
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72
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Elemike EE, Onwudiwe DC, Fayemi OE, Ekennia AC, Ebenso EE, Tiedt LR. Biosynthesis, Electrochemical, Antimicrobial and Antioxidant Studies of Silver Nanoparticles Mediated by Talinum triangulare Aqueous Leaf Extract. J CLUST SCI 2016. [DOI: 10.1007/s10876-016-1087-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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73
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Thombre RS, Shinde V, Thaiparambil E, Zende S, Mehta S. Antimicrobial Activity and Mechanism of Inhibition of Silver Nanoparticles against Extreme Halophilic Archaea. Front Microbiol 2016; 7:1424. [PMID: 27679615 PMCID: PMC5020055 DOI: 10.3389/fmicb.2016.01424] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Accepted: 08/29/2016] [Indexed: 01/31/2023] Open
Abstract
Haloarchaea are salt-loving halophilic microorganisms that inhabit marine environments, sea water, salterns, and lakes. The resistance of haloarchaea to physical extremities that challenge organismic survival is ubiquitous. Metal and antibiotic resistance of haloarchaea has been on an upsurge due to the exposure of these organisms to metal sinks and drug resistance genes augmented in their natural habitats due to anthropogenic activities and environmental pollution. The efficacy of silver nanoparticles (SNPs) as a potent and broad spectrum inhibitory agent is known, however, there are no reports on the inhibitory activity of SNPs against haloarchaea. In the present study, we have investigated the antimicrobial potentials of SNPs synthesized using aqueous leaf extract of Cinnamomum tamala against antibiotic resistant haloarchaeal isolates Haloferax prahovense RR8, Haloferax lucentense RR15, Haloarcula argentinensis RR10 and Haloarcula tradensis RR13. The synthesized SNPs were characterized by UV-Vis spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, dynamic light scattering, X-ray diffraction and Fourier transform infrared spectroscopy. The SNPs demonstrated potent antimicrobial activity against the haloarchaea with a minimum inhibitory concentration of 300-400 μg/ml. Growth kinetics of haloarchaea in the presence of SNPs was studied by employing the Baranyi mathematical model for microbial growth using the DMFit curve fitting program. The C. tamala SNPs also demonstrated cytotoxic activity against human lung adenocarcinoma epithelial cell line (A540) and human breast adenocarcinoma cell line (MCF-7). The mechanism of inhibition of haloarchaea by the SNPs was investigated. The plausible mechanism proposed is the alterations and disruption of haloarchaeal membrane permeability by turbulence, inhibition of respiratory dehydrogenases and lipid peroxidation causing cellular and DNA damage resulting in cell death.
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Affiliation(s)
- Rebecca S. Thombre
- Department of Biotechnology, Modern College of Arts, Science and CommercePune, India
| | - Vinaya Shinde
- Department of Biotechnology, Modern College of Arts, Science and CommercePune, India
| | - Elvina Thaiparambil
- Department of Biotechnology, Modern College of Arts, Science and CommercePune, India
| | - Samruddhi Zende
- Department of Biotechnology, Modern College of Arts, Science and CommercePune, India
| | - Sourabh Mehta
- National Center for Nanosciences and Nanotechnology, University of MumbaiMumbai, India
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Ahmed Q, Gupta N, Kumar A, Nimesh S. Antibacterial efficacy of silver nanoparticles synthesized employing Terminalia arjuna bark extract. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2016; 45:1-9. [PMID: 27684206 DOI: 10.1080/21691401.2016.1215328] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
In the present investigation, we have explored simple, robust, inexpensive, and eco-friendly method for the synthesis of silver nanoparticles (AgNPs) using Terminalia arjuna bark extract (TA-AgNPs). Various parameters dictating the biosynthesis of TA-AgNPs such as time and temperature of reaction, concentration of AgNO3, and T. arjuna extract amount were investigated. Characterization of TA-AgNPs was done via UV-vis spectroscopy along with FT-IR, XRD, SEM and dynamic light scattering. The antimicrobial activity of TA-AgNPs was investigated against Escherichia coli. Comparable zone of inhibition was exhibited by TA-AgNPs. This study suggests that TA-AgNPs possesses significant antibacterial properties.
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Affiliation(s)
- Qadruddin Ahmed
- a Department of Biotechnology , Central University of Rajasthan , Ajmer , India
| | - Nidhi Gupta
- b Department of Biotechnology , The IIS University , Jaipur , India
| | - Ajeet Kumar
- c Department of Chemistry and Biomolecular Science , Clarkson University , Potsdam , NY , USA
| | - Surendra Nimesh
- a Department of Biotechnology , Central University of Rajasthan , Ajmer , India
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Ali ZA, Roslan MA, Yahya R, Wan Sulaiman WY, Puteh R. Eco‐friendly synthesis of silver nanoparticles and its larvicidal property against fourth instar larvae of
Aedes aegypti. IET Nanobiotechnol 2016; 11:152-156. [DOI: 10.1049/iet-nbt.2015.0123] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Zainal Abidin Ali
- Department of PhysicsFaculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia
| | - Muhammad Aidil Roslan
- Department of ParasitologyFaculty of MedicineUniversity of MalayaKuala Lumpur 50603Malaysia
| | - Rosiyah Yahya
- Department of ChemistryFaculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia
| | | | - Rustam Puteh
- Department of PhysicsFaculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia
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76
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Application of magneto‐responsive Oenococcus oeni for the malolactic fermentation in wine. Biochem Eng J 2016. [DOI: 10.1016/j.bej.2016.02.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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77
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Salaheldin TA, Husseiny SM, Al-Enizi AM, Elzatahry A, Cowley AH. Evaluation of the Cytotoxic Behavior of Fungal Extracellular Synthesized Ag Nanoparticles Using Confocal Laser Scanning Microscope. Int J Mol Sci 2016; 17:329. [PMID: 26950118 PMCID: PMC4813191 DOI: 10.3390/ijms17030329] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 02/19/2016] [Accepted: 02/19/2016] [Indexed: 11/25/2022] Open
Abstract
Silver nanoparticles have been synthesized by subjecting a reaction medium to a Fusarium oxysporum biomass at 28 °C for 96 h. The biosynthesized Ag nanoparticles were characterized on the basis of their anticipated peak at 405 nm using UV-Vis-NIR spectroscopy. Structural confirmation was evident from the characteristic X-ray diffraction (XRD) pattern, high-resolution transmission electron Microscopy (HRTEM) and the particle size analyzer. The Ag nanoparticles were of dimension 40 ± 5 nm and spherical in shape. The study mainly focused on using the confocal laser scanning microscope (CLSM) to examine the cytotoxic activities of fungal synthesized Ag nanoparticles on a human breast carcinoma cell line MCF7 cell, which featured remarkable vacuolation, thus indicating a potent cytotoxic activity.
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Affiliation(s)
- Taher A Salaheldin
- Nanotechnology and Advanced Materials Central Lab, Agriculture Research Center, PO Box 588 Orman, Giza 12619, Egypt.
| | - Sherif M Husseiny
- Faculty of Women for Art, Science & Education, Ain Shams University, PO Box 11757 Alkurba, Cairo 11341, Egypt.
| | - Abdullah M Al-Enizi
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Ahmed Elzatahry
- Materials Science and Technology Program, College of Arts and Sciences, Qatar University, PO Box 2713, Doha, Qatar.
| | - Alan H Cowley
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA.
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78
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Ag@Ag8W4O16 nanoroasted rice beads with photocatalytic, antibacterial and anticancer activity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 60:109-118. [PMID: 26706513 DOI: 10.1016/j.msec.2015.11.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 10/26/2015] [Accepted: 11/03/2015] [Indexed: 11/21/2022]
Abstract
Increasing resistance of pathogens and cancer cell line towards antibiotics and anticancer agents has caused serious health problems in the past decades. Due to these problems in recent years, researchers have tried to combine nanotechnology with material science to have intrinsic antimicrobial and anticancer activity. The metals and metal oxides were investigated with respect to their antimicrobial and anticancer effects towards bacteria and cancer cell line. In the present work metal@metal tungstate (Ag@Ag8W4O16 nanoroasted rice beads) is investigated for antibacterial activity against Escherichia coli and Staphylococcus aureus using Mueller-Hinton broth and the anticancer activity against B16F10 cell line was studied. Silver decorated silver tungstate (Ag@Ag8W4O16) was synthesized by the microwave irradiation method using Cetyl Trimethyl Ammonium Bromide (CTAB). Ag@Ag8W4O16 was characterized by using various spectroscopic techniques. The phase and crystalline nature were analyzed by using XRD. The morphological analysis was carried out using Field Emission Scanning Electron Microscopy (FE-SEM), and High Resolution Transmission Electron Microscopy (HR-TEM). Further, Fourier Transform Infrared Spectroscopy (FT-IR) and Raman spectral analysis were carried out in order to ascertain the presence of functional groups in Ag@Ag8W4O16. The optical property was investigated using Diffuse Reflectance Ultraviolet-Visible Spectroscopy (DRS-UV-Vis) and the band gap was found to be 3.08eV. Surface area of the synthesized Ag@Ag8W4O16 wasanalyzed by BET analysis and Ag@Ag8W4O16 was utilized for the degradation of organic dyes methylene blue and rhodamine B. The morphology of the Ag@Ag8W4O16 resembles roasted rice beads with breath and length in nm range. The oxidation state of tungsten (W) and silver (Ag) was investigated using X-ray photoelectron spectroscopy (XPS).
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79
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M JF, P L. Apoptotic efficacy of biogenic silver nanoparticles on human breast cancer MCF-7 cell lines. Prog Biomater 2015; 4:113-121. [PMID: 26566469 PMCID: PMC4636515 DOI: 10.1007/s40204-015-0042-2] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 09/22/2015] [Indexed: 12/16/2022] Open
Abstract
This article describes the synthesis of silver nanoparticles using the aqueous extract of Alternanthera sessilis as a reducing agent by sonication, espousing green chemistry principles. Biologically synthesized nanoparticle-based drug
delivery systems have significant potential in the field of biopharmaceutics due to its smaller size entailing high surface area and synergistic effects of embedded biomolecules. In the present work the cytotoxic effect of biosynthesized silver nanoparticles studied by MTT assay against breast cancer cells (MCF-7 cell line) showed significant cytotoxic activity with IC50 value 3.04 μg/mL compared to that of standard cisplatin. The superior activity of the silver nanoparticles may be due to the spherical shape and smaller particle size 10–30 nm as confirmed from transmission electron microscope (TEM) analysis. The data obtained in the study reveal the potent therapeutic value of biogenic silver nanoparticles and the scope for further development of anticancer drugs.
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Affiliation(s)
- Jannathul Firdhouse M
- Department of Chemistry, Avinashilingam Institute for Home Science and Higher Education for Women University, Coimbatore, 641043 Tamil Nadu India
| | - Lalitha P
- Department of Chemistry, Avinashilingam Institute for Home Science and Higher Education for Women University, Coimbatore, 641043 Tamil Nadu India
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An investigation on cytotoxic effect of bioactive AgNPs synthesized using Cassia fistula flower extract on breast cancer cell MCF-7. ACTA ACUST UNITED AC 2015; 8:110-115. [PMID: 28352579 PMCID: PMC4980703 DOI: 10.1016/j.btre.2015.10.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Revised: 09/01/2015] [Accepted: 10/09/2015] [Indexed: 01/27/2023]
Abstract
A single step protocol to produce biofunctionalized silver nanoparticles (AgNPs) using the aqueous extract of Cassia fistula flower as “natural factory” was investigated. The reaction between silver ions and aqueous flower extract after the bioreduction process has resulted in the formation of reddish brown color colloidal solution. XRD pattern showed the face centered cubic crystalline structure of AgNPs and exhibited spherical morphology as characterized by FE-SEM. FTIR studies identified different functional groups involved in effective capping of AgNPs. The zeta potential affirmed the phytoreduced AgNPs possess good stability and the size of the particle was measured by DLS. The synthesized AgNPs displayed effective cytotoxic potential against MCF7 and the inhibitory concentration (IC50) was recorded at 7.19 μg/mL. The apoptotic effects of the AgNPs were also confirmed by AO/EB staining. The investigation presents preliminary evidence that biosynthesized AgNPs can be used in the development of novel anticancer drugs.
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81
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Biosynthesis of silver nanoparticles using aqueous leaf extract of Thevetia peruviana Juss and its antimicrobial activities. APPLIED NANOSCIENCE 2015. [DOI: 10.1007/s13204-015-0505-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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82
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Malapermal V, Botha I, Krishna SBN, Mbatha JN. Enhancing antidiabetic and antimicrobial performance of Ocimum basilicum, and Ocimum sanctum (L.) using silver nanoparticles. Saudi J Biol Sci 2015; 24:1294-1305. [PMID: 28855825 PMCID: PMC5562380 DOI: 10.1016/j.sjbs.2015.06.026] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 06/24/2015] [Accepted: 06/28/2015] [Indexed: 11/27/2022] Open
Abstract
The role of silver nanoparticles (AgNps) is an attractive proposition for advancing modern diabetes therapies and applied science. Stable AgNps with a size range of 3–25 nm were synthesized using aqueous leaf extracts from Ocimum basilicum, Ocimum sanctum, and in combination. The concentration of the extracts facilitated the reduction of silver nitrate that led to the rapid formation of AgNps at room temperature, indicating a higher reaction rate as opposed to harsh chemical methods, and high conversion energy usually involved in the synthesis. The size, shape and elemental analysis were carried out using UV–Visible spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM–EDX), dynamic light scattering (DLS), and zeta potential whilst, Fourier transform infrared (FTIR) supported by gas chromatography mass spectroscopy (GC–MS) was used to identify the type of capping agents. Inhibition of α-amylase and α-glucosidase enzymes retards the rate of carbohydrate digestion, thereby provides an alternative and a less evasive strategy of reducing postprandial hyperglycaemia in diabetic patients. The AgNps derived from O. sanctum and O. basilicum, respectively displayed an inhibitory effect at 89.31 ± 5.32%, and 79.74 ± 9.51%, respectively, against Bacillus stearothermophilus α-glucosidase enzyme model, indicating an enhanced biocatalytic potential compared to their respective crude extracts and the control. Furthermore, the emerging rate of infections in diabetic patients validates the need for the discovery of dual diabetes therapies. As a result, the bioderived AgNps displayed antimicrobial activity against bacterial species Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, and Salmonella species.
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Affiliation(s)
- Veshara Malapermal
- Department of Biomedical and Clinical Technology, Faculty of Health Science, Durban University of Technology, Durban, South Africa
| | - Izel Botha
- Department of Homeopathy, Durban University of Technology, Durban, South Africa
| | - Suresh Babu Naidu Krishna
- Department of Biomedical and Clinical Technology, Faculty of Health Science, Durban University of Technology, Durban, South Africa
| | - Joyce Nonhlanhla Mbatha
- Department of Biomedical and Clinical Technology, Faculty of Health Science, Durban University of Technology, Durban, South Africa
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83
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Paladini F, Pollini M, Sannino A, Ambrosio L. Metal-Based Antibacterial Substrates for Biomedical Applications. Biomacromolecules 2015; 16:1873-85. [PMID: 26082968 DOI: 10.1021/acs.biomac.5b00773] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The interest in nanotechnology and the growing concern for the antibiotic resistance demonstrated by many microorganisms have recently stimulated many efforts in designing innovative biomaterials and substrates with antibacterial properties. Among the implemented strategies to control the incidence of infections associated with the use of biomedical device and implants, interesting routes are represented by the incorporation of bactericidal agents onto the surface of biomaterials for the prevention of bacterial adhesion and biofilm growth. Natural products and particularly bioactive metals such as silver, copper and zinc represent an interesting alternative for the development of advanced biomaterials with antimicrobial properties. This review presents an overview of recent progress in the modification of biomaterials as well as the most attractive techniques for the deposition of antimicrobial coatings on different substrates for biomedical application. Moreover, some research activities and results achieved by the authors in the development of antibacterial materials are also presented and discussed.
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Affiliation(s)
- Federica Paladini
- †Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy
| | - Mauro Pollini
- †Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy
| | - Alessandro Sannino
- †Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy
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84
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Ajitha B, Reddy YAK, Reddy PS. Biosynthesis of silver nanoparticles using Momordica charantia leaf broth: Evaluation of their innate antimicrobial and catalytic activities. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 146:1-9. [DOI: 10.1016/j.jphotobiol.2015.02.017] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 02/23/2015] [Accepted: 02/25/2015] [Indexed: 10/23/2022]
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85
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Lai SCS, Lazenby RA, Kirkman PM, Unwin PR. Nucleation, aggregative growth and detachment of metal nanoparticles during electrodeposition at electrode surfaces. Chem Sci 2015; 6:1126-1138. [PMID: 29560200 PMCID: PMC5811076 DOI: 10.1039/c4sc02792b] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 11/07/2014] [Indexed: 02/01/2023] Open
Abstract
The nucleation and growth of metal nanoparticles (NPs) on surfaces is of considerable interest with regard to creating functional interfaces with myriad applications. Yet, key features of these processes remain elusive and are undergoing revision. Here, the mechanism of the electrodeposition of silver on basal plane highly oriented pyrolytic graphite (HOPG) is investigated as a model system at a wide range of length scales, spanning electrochemical measurements from the macroscale to the nanoscale using scanning electrochemical cell microscopy (SECCM), a pipette-based approach. The macroscale measurements show that the nucleation process cannot be modelled as either truly instantaneous or progressive, and that step edge sites of HOPG do not play a dominant role in nucleation events compared to the HOPG basal plane, as has been widely proposed. Moreover, nucleation numbers extracted from electrochemical analysis do not match those determined by atomic force microscopy (AFM). The high time and spatial resolution of the nanoscale pipette set-up reveals individual nucleation and growth events at the graphite basal surface that are resolved and analysed in detail. Based on these results, corroborated with complementary microscopy measurements, we propose that a nucleation-aggregative growth-detachment mechanism is an important feature of the electrodeposition of silver NPs on HOPG. These findings have major implications for NP electrodeposition and for understanding electrochemical processes at graphitic materials generally.
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Affiliation(s)
- Stanley C S Lai
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , UK .
- MESA+ Institute for Nanotechnology , University of Twente , PO Box 217 , 7500 AE Enschede , The Netherlands .
| | - Robert A Lazenby
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , UK .
| | - Paul M Kirkman
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , UK .
| | - Patrick R Unwin
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , UK .
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86
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Nivethaa EAK, Dhanavel S, Narayanan V, Vasu CA, Stephen A. An in vitro cytotoxicity study of 5-fluorouracil encapsulated chitosan/gold nanocomposites towards MCF-7 cells. RSC Adv 2015. [DOI: 10.1039/c4ra11615a] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Schematic outlining the synthesis of 5FU loaded CS/Au nanocomposite and its application.
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Affiliation(s)
- E. A. K. Nivethaa
- Material Science Centre
- Department of Nuclear Physics
- University of Madras
- Chennai-25
- India
| | - S. Dhanavel
- Material Science Centre
- Department of Nuclear Physics
- University of Madras
- Chennai-25
- India
| | - V. Narayanan
- Department of Inorganic Chemistry
- University of Madras
- Chennai 600 025
- India
| | - C. Arul Vasu
- Department of Zoology
- University of Madras
- Chennai 600 025
- India
| | - A. Stephen
- Material Science Centre
- Department of Nuclear Physics
- University of Madras
- Chennai-25
- India
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