IET Nanobiotechnology
Volume 13, Issue 4, June 2019
Volumes & issues:
Volume 13, Issue 4
June 2019
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- Author(s): Ahmad Faraz ; Mohammad Faizan ; Fareen Sami ; Husna Siddiqui ; John Pichtel ; Shamsul Hayat
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 345 –352
- DOI: 10.1049/iet-nbt.2018.5251
- Type: Article
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Nanotechnology is an emerging field of science that applies particles between 1 and 100 nm in size for a range of practical uses. Nano-technological discoveries have opened novel applications in biotechnology and agriculture. Many reactions involving nanoparticles (NPs) are more efficient compared to those of their respective bulk materials. NPs obtained from plant material, denoted as biogenic or phytosynthesised NPs, are preferred over chemically synthesised NPs due to their low toxicity, rapid reactions and cost-effective production. NPs impart both positive and negative impacts on plant growth and development. NPs exhibit their unique actions as a function of their size, reactivity, surface area and concentration. An insight into NP biosynthesis and translocation within the plant system will shed some light on the roles and mechanisms of NP-mediated regulation of plant metabolism. This review is a step towards that goal.
- Author(s): Anupriya Anand ; Abimanyu Sugumaran ; Damodharan Narayanasamy
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 353 –362
- DOI: 10.1049/iet-nbt.2018.5322
- Type: Article
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A brain tumour is amongst most devastating and challenging condition to overcome with suitable treatment as the drug has to cross the blood–brain barrier (BBB) with several physiological barriers like opsonisation by the reticuloendothelial system. Presently various techniques such as surgical, chemotherapeutic agents, and radiotherapy techniques have performed to extend the lifespan of patients diagnosed with glioblastoma, which did not maximise the overall survival of patients with a tumour. Nanotechnology is relied upon to diminish the requirement for intrusive methods for conveyance of therapeutics to the central nervous system. Colloidal nanocarriers sizing range 1–1000 nm have been utilised to cross BBB delivers the drug at cell levels with enhanced bioavailability and reduced toxicity. However, solid lipid nanoparticles (SLNs) are considered a highly flexible carrier for more successful remedially in brain tumour. The treatment of a brain tumour via SLNs is gaining greater potency due to its inimitable size and lipidic nature. This review focuses and represents the current strategies of SLNs in the brain tumour treatment with appropriate techniques adopted are highlighted. Based on this review, the authors concluded that SLNs embrace exclusive promising lipidic nanocarrier that could be utilised to target a brain tumour effectively.
Nanoparticles: biosynthesis, translocation and role in plant metabolism
Brain targeted delivery of anticancer drugs: prospective approach using solid lipid nanoparticles
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- Author(s): Rachana Ranu ; Yatishwar Chauhan ; Amar Ratan ; Pramod K. Singh ; Bhaskar Bhattacharya ; Sandeep K. Tomar
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 363 –367
- DOI: 10.1049/iet-nbt.2018.5105
- Type: Article
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Nanomaterials synthesis using natural sources is the technology to up come with advanced materials through extracts of plant, microorganisms, poultry waste etc. In this study, the authors report the synthesis of porous carbon nanotubes using high-temperature decomposition technique facilitated by cobalt salt using chicken fats, a poultry waste as a precursor. Since chicken fats contain fatty acids which can decompose into short hydrocarbon chains and cobalt can act as the catalyst. The formation of carbon nanotubes was confirmed by Raman spectra, peaks at 1580 and 1350.46 cm−1 confirmed the graphite mode G-band and structural imperfections defect mode D-band, respectively. Transmission electron microscopy showed the formation of tube-like structures. Nitrogen adsorption–desorption studies showed the high-surface area of 418.1 m2g−1 with an estimated pore diameter of 8.1 nm. Thermogravimetry analysis–derivative thermogravimetric analysis–differential thermal analysis showed the instant weight loss at 517°C attributed to the rapid combustion of nanotubes. A vibrating-sample magnetometer showed the paramagnetic nature of the so-formed carbon nanotubes formed.
- Author(s): Selvadurai Manjula ; Olapalayam Lakshmanan Shanmugasundaram ; Balasubramanian Mythili Gnanamangai ; Ramalingam Pavithra ; Shivaji Kavitha ; Ponnusamy Ponmurugan
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 368 –375
- DOI: 10.1049/iet-nbt.2018.5218
- Type: Article
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368
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Ethnic value of many known plants are underexploited for medicinal application besides their proven traditional qualities. One such plant known for wound healing is Tridax procumbens. This plant has wound healing property and is commercially unexploited. Silver nanoparticle (Ag-NP) were synthesized using this plant extracts using different solvents (methanol, ethyl acetate and aqueous), which exhibit resonance at 426, 424 and 418 nm, respectively. This plant-mediated Ag-NPs have strong anti-bactericidal activity against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Streptococcus pyogenes, Klebsiella pneumonia, Serratia marcescens and Bacillus subtilis with methanol extract. Further instance, elemental composition was confirmed by energy dispersive X-ray analysis and particle size ranges were observed at 80–200 nm with spherical shape nanoparticles by scanning electron microscopy and transmission electron microscopy analysis. The biocompatibility of Ag-NPs was assessed using fibroblast cell line (L929) by MTT assay with 109.35 µg IC50 value. The oxygen plasma treated and non-treated bamboo spunlaced nonwoven fabrics were coated with the Ag-NPs by exhaust method. Contact angle and water retention revealed significant difference in absorption ability of plasma treated fabric. Field emission scanning electron microscopy revealed the presence of Ag-NPs in plasma coated fabrics. The fabricated cloth was studied for anti-microbial and microbial penetration ability.
- Author(s): Mojtaba Shakibaie ; Elnaz Hajighasemi ; Mahboubeh Adeli-Sardou ; Mohsen Doostmohammadi ; Hamid Forootanfar
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 377 –381
- DOI: 10.1049/iet-nbt.2018.5102
- Type: Article
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In the present study Delftia sp. Shakibaie, Forootanfar, and Ghazanfari (SFG), was applied for preparation of biogenic Bi nanoparticles (BiNPs) and antibacterial and anti-biofilm activities of the purified BiNPs were investigated by microdilution and disc diffusion methods. Transmission electron micrographs showed that the produced nanostructures were spherical with a size range of 40–120 nm. The measured minimum inhibitory concentration of both the Bi subnitrate and BiNPs against three biofilms producing bacterial pathogens of Staphylococcus aureus, Pseudomonas aeruginosa, and Proteus mirabilis were found to be above 1280 µg/ml. Addition of BiNPs (1000 µg/disc) to antibiotic discs containing tobramycin, nalidixic acid, ceftriaxone, bacitracin, cefalexin, amoxicillin, and cefixime significantly increased the antibacterial effects against methicillin-resistant S. aureus (MRSA) in comparison with Bi subnitrate (p < 0.05). Furthermore, the biogenic BiNPs decreased the biofilm formation of S. aureus, P. aeruginosa, and P. mirabilis to 55, 85, and 15%, respectively. In comparison to Bi subnitrate, BiNPs indicated significant anti-biofilm activity against P. aeruginosa (p < 0.05) while the anti-biofilm activity of BiNPs against S. aureus and P. mirabilis was similar to that of Bi subnitrate. To sum up, the attained results showed that combination of biogenic BiNPs with commonly used antibiotics relatively enhanced their antibacterial effects against MRSA.
- Author(s): Nagy Emam Moustafa and Kout El Kloub Fares Mahmoud
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 382 –386
- DOI: 10.1049/iet-nbt.2018.5179
- Type: Article
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Green approaches have the potential to significantly reduce the costs and environmental impact of chemical syntheses. Here, the authors used green tea (GT) leaf extract to synthesise and anchor palladium nanoparticles (PdNPs) to silica. The synthesised PdNPs in GT extract were characterised by ultraviolet–visible spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, and transmission electron microscopy. PdNPs primarily formed as capped NPs dispersed in GT extract before reduction completed after 24 h. This capped phytochemical solution was employed as a green precursor solution to synthesise PdNP-embedded solid supports. The morphology of PdNPs anchored to silica differed to that of PdNPs in solution. Silica-embedded PdNPs was employed as a new ligand exchanger to isolate trace polycyclic aromatic sulphur heterocycles from a hydrocarbon matrix. The isolation efficiency of the new, greener ligand exchanger was the same as an efficient chemical ligand exchanger and may, therefore, hold promise for future applications.
- Author(s): Neda Baradaran Mohsenian ; Ahmad Shanei ; Seyed Jamal Alavi ; Majid Kheirollahi ; Azadeh Hashem Nia ; Mohamad Bagher Tavakoli
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 387 –391
- DOI: 10.1049/iet-nbt.2018.5387
- Type: Article
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p.
387
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Chondrosarcoma is the second-most malignant cancer of the bone and routine treatments such as chemotherapy and radiotherapy have not responded to the treatment of this cancer. Due to the resistance of chondrosarcoma to radiotherapy, the combination of therapeutic methods has been considered in recent years. In this study, a novel combination approach is used that allows photodynamic therapy to be activated by X-rays. The synthesis of Mn-doped zinc sulphide (ZnS) quantum dots was carried out and chlorin e6 photosensitiser attached by covalent and non-covalent methods and their application as an intracellular light source for photodynamic activation was investigated. The toxicity of each nanoparticles was evaluated on chondrosarcoma cancer cells (SW1353) before and after radiation. Also, the effect nanoparticle-photosensitiser conjugated type was investigated in the therapeutic efficacy. The characterisation test (SEM, TEM, EDS, TGA, XRD and ICP analyses) was shown successful synthesis of Mn-doped ZnS quantum dots. Chondrosarcoma cancer cell viability was significantly reduced when cells were treated with MPA-capped Mn-doped ZnS quantum dots-chlorin e6 with spermine linker and with covalent attachment (P ≤ 0.001). These results indicate that X-ray can activate the quantum dot complexes for cancer treatment, which can be a novel method for treatment of chondrosarcoma.
- Author(s): Jaleh Varshosaz ; Ladan Dayani ; Sana Pirmardvand Chegini ; Mohsen Minaiyan
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 392 –399
- DOI: 10.1049/iet-nbt.2018.5252
- Type: Article
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The purpose of the present study was to compare mesoporous and fumed silica nanoparticles (NPs) to enhance the aqueous solubility and oral bioavailability of raloxifene hydrochloride (RH). Mesoporous silica NPs (MSNs) and fumed silica NPs were used by freeze-drying or spray-drying methods. MSNs were obtained with different ratios of cetyltrimethylammonium bromide. Saturation solubility of the NPs was compared with the pure drug. The optimised formulation was characterised by scanning electron microscopy (SEM), X-ray diffraction (XRD) and differential scanning calorimetry. The pharmacokinetic studies were done by oral administration of a single dose of 15 mg/kg of pure drug or fumed silica NPs of RH in Wistar rats. MSNs enhanced the solubility of RH from 19.88 ± 0.12 to 76.5 μg/ml. Freeze-dried fumed silica increased the solubility of the drug more than MSNs (140.17 ± 0.45 μg/ml). However, the spray-dried fumed silica caused about 26-fold enhancement in its solubility (525.7 ± 93.5 μg/ml). Increasing the ratio of silica NPs enhanced the drug solubility. The results of XRD and SEM analyses displayed RH were in the amorphous state in the NPs. Oral bioavailability of NPs showed 3.5-fold increase compared to the pure drug. The RH loaded fumed silica NPs prepared by spray-drying technique could more enhance the solubility and oral bioavailability of RH.
- Author(s): Zeinab Salehnia ; Daryoush Shahbazi-Gahrouei ; Abolfazl Akbarzadeh ; Behzad Baradaran ; Safar Farajnia ; Mehran Naghibi
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 400 –406
- DOI: 10.1049/iet-nbt.2018.5285
- Type: Article
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The aim of this study is to synthesise superparamagnetic iron oxide nanoparticles conjugated with anti-epidermal growth factor receptor monoclonal antibody (ANTI-EGFR-SPION) and investigate its physicochemical characterisation and biocompatibility as a targeted magnetic resonance imaging (MRI) contrast agent for the EGFR-specific detection in EGFR expressing tumour cells. These particles employed biocompatible polymers, poly(D,L-lactide-co-glycolide) (PLGA) and polyethylene glycol aldehyde (PEG-aldehyde), to increase the half-life of particles in circulation and reduce their side effects. The Fe3O4-loaded PLGA-PEG-aldehyde nanoparticles were prepared by a modified water-in-oil-in-water double emulsion method. The EGFR antibody was conjugated to the surface of SPIONs using the aldehyde-amine reaction. Synthesised conjugates (nanoprobes) were characterised using Fourier transform infrared spectrophotometry, dynamic light scattering, transmission electron microscopy images, and vibrating-sample magnetometery, and the results showed that the conjugation was successful. The mean diameter of nanoprobes was about 25 nm. These nanoprobes exhibited excellent water-solubility, stability, and biocompatibility. Meanwhile, MR susceptibility test proved that synthesised nanoprobes can be managed for negative contrast enhancement. The results of this study suggested the potential use of these nanoprobes for non-invasive molecular MRI in EGFR detection in the future.
- Author(s): Akbar Rostami-Vartooni and Abolfazl Moradi-Saadatmand
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 407 –415
- DOI: 10.1049/iet-nbt.2018.5089
- Type: Article
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In this work, an Fe3O4/HZSM-5 nanocomposite was synthesised in the presence of Juglans regia L. leaf extract. Then, silver nanoparticles (Ag NPs) were immobilised on the surface of prepared magnetically recoverable HZSM-5 using selected extract for reduction of Ag+ ions to Ag NPs and their stabilisation on the surface of the nanocomposite. The reduction of Ag+ ions occurs at room temperature within a few minutes. Characterisation of the prepared catalysts has been carried out using fourier transform infrared (FT-IR), X-ray diffraction, field-emission scanning electron microscopy (FESEM), energy-dispersive spectroscopy, Brunauer–Emmett–Teller method, and a vibrating sample magnetometer. According to the FESEM images of the nanocomposites, the average size of the Ag NPs on the Fe3O4/HZSM-5 surface was >70 nm. The Ag/Fe3O4/HZSM-5 nanocomposite was a highly active catalyst for the reduction of methyl orange and 4-nitrophenol in aqueous medium. The utilisation of recycled catalyst for three times in the reduction process does not decrease its activity.
- Author(s): Senthilkumar Pachiyappan ; Dawn Shanmuganatham Selvanantham ; Sree Samanvitha Kuppa ; Saipriya Chandrasekaran ; Antony Vincent Samrot
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 416 –427
- DOI: 10.1049/iet-nbt.2018.5053
- Type: Article
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In this study, polyhydroxybutyrate (PHB) nanoparticles were synthesised following nanoprecipitation method having different solvents and surfactant (Tween 80) concentrations. In this study, PHB nanoparticles were encapsulated with curcumin and subjected for sustained curcumin delivery. Both the curcumin loaded and unloaded PHB nanoparticles were characterised using FTIR, SEM, and AFM. Sizes of the particles were found to be between 60 and 300 nm. The drug encapsulation efficiency and in vitro drug release of the nanoparticles were analysed. Antibacterial activity and anticancer activity were also evaluated. The LC50 values of most of the nanoparticles were found to be between 10 and 20 µg/100 µl, anticancer activity of curcumin loaded PHB nanoparticles were further confirmed by AO/PI staining and mitochondrial depolarisation assay.
- Author(s): Erfaneh Ghassami ; Jaleh Varshosaz ; Mina Mirian ; Ali Jahanian-Najafabadi
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 428 –434
- DOI: 10.1049/iet-nbt.2018.5047
- Type: Article
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Breast cancer is a major cause of cancer mortality. Regarding the advantages of polymeric nanoparticles as drug delivery systems with targeting potential, in this study the antitumor mechanism of targeted docetaxel polymeric nanoparticles of Ecoflex® was exploited. Since the overexpression of HER-2 receptor in breast cancer cases is associated with poor prognosis and more aggressive disease, the proposed nanoparticles were conjugated to HER-2 specific aptamer molecules. In vitro cytotoxicity was evaluated by MTT assay. Flow-cytometry analysis was performed to evaluate the cellular uptake of nanoparticles loaded with a fluorescent probe. Anti-migration effects of samples were studied. Annexin IV-FITC and propidium iodide were implemented to investigate apoptosis induction and cell cycle analysis. Enhanced cytotoxicity compared with free docetaxel was explained considering improved cellular uptake of the nanoparticles and induced apoptosis in a larger portion of cells. Lower relative migration demonstrated enhanced anti-migration effect of nanoparticles, and cell cycle was arrested in G2/M phase using both formulations so the anti-microtubule mechanism of the drug was not altered. Therefore, this system could offer a potential substitute for the currently marketed docetaxel formulations, which may reduce adverse effects of the drug, while further in vivo and clinical investigations are required.
- Author(s): Shamaila Sajjad ; Bushra Uzair ; Anum Shaukat ; Madiha Jamshed ; Sajjad Ahmed Khan Leghari ; Muhammad Ismail ; Qaiser Mansoor
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 435 –440
- DOI: 10.1049/iet-nbt.2018.5415
- Type: Article
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The silver oxide nanoparticles (AgO2-NPs) were synthesised using silver foil as a new precursor in wet chemical method. X-ray diffraction analysis shows crystallographic structures of AgO2-NPs with crystallite size of 35.54 nm well-matched with standard cubic structure. Scanning electron microscopy analysis clearly shows the random distribution of spherical-shaped nanoparticles. Energy dispersive X-ray analysis confirmed the purity of the samples as it shows no impurity element. Fourier transforms infra-red analysis confirmed the formation of AgO2-NPs with the presence of Ag-O-Ag stretching bond. All the techniques also confirmed the loading of ceftriaxone drug on the surface of AgO2-NPs. This study also described the effect of AgO2-NPs having synergistic activity with β lactam antibiotic i.e. ceftriaxone against ESBL generating Escherichia coli (E. coli). Among isolated strains of E. coli, 60.0% were found to be ESBL producer. The synergistic activities of AgO2-NPs with ceftriaxone suggest that these combinations are effective against MDR-ESBL E. coli strains as evident by increase in zone sizes. The present study observed rise in MDR-ESBL E. coli with polymorphism of blaCTXM and blaSHV causing UTI infections in Pakistani population. The antibiotic and AgO2-NPs synergistic effect can be used as an efficient approach to combat uro-pathogenic infections.
- Author(s): Arzhang Shahbazi and Ali Jamshidi
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 441 –448
- DOI: 10.1049/iet-nbt.2018.5129
- Type: Article
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Forthcoming applications for molecular communications (MC) such as drug-delivery and health monitoring will require robust receiver capabilities to mitigate channel memory and inter symbol interference caused by previous transmitted symbols. Here, the authors introduce an adaptive weighted algorithm to reduce the influence of these factors. This novel signal detection is deployed on to a concentration-based MC system with absorbing receiver which is based on the so-called first passage time concept. The proposed detector has low complexity and does not require explicit channel knowledge. To evaluate authors’ proposed algorithm, a theoretical approach is developed to derive the bit error rate (BER). Numerical results also carried out to verify the accuracy of these formulations and establish that the new detector will achieve better performance in comparison with other common low-complex detectors under certain scenarios. Additionally, the authors propose a simple pre-coding technique to combat the sequence of consecutive ones in low ISI scenarios. Also a comparison between detectors is given, which is based on the variation of distance, symbol period, signal-to-noise ratio (SNR), and number of molecules.
- Author(s): Mahboobeh Rad Goudarzi ; Mojtaba Bagherzadeh ; Mohammad Fazilati ; Fariborz Riahi ; Hossein Salavati ; Samaneh Shahrokh Esfahani
- Source: IET Nanobiotechnology, Volume 13, Issue 4, p. 449 –455
- DOI: 10.1049/iet-nbt.2018.5029
- Type: Article
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In the first section of this research, superparamagnetic nanoparticles (NPs) (Fe3O4) modified with hydroxyapatite (HAP) and zirconium oxide (ZrO2) and thereby Fe3O4/HAP and Fe3O4/ZrO2 NPs were synthesised through co-precipitation method. Then Fe3O4/HAP and Fe3O4/ZrO2 NPs characterised with various techniques such as X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy, energy dispersive X-ray analysis, Brunauer–Emmett–Teller, Fourier transform infrared, and vibrating sample magnetometer. Observed results confirmed the successful synthesis of desired NPs. In the second section, the antibacterial activity of synthesised magnetic NPs (MNPs) was investigated. This investigation performed with multiple microbial cultivations on the two bacteria; Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). Obtained results proved that although both MNPs have good antibacterial properties, however, Fe3O4/HAP NP has greater antibacterial performance than the other. Based on minimum inhibitory concentration and minimum bactericidal concentration evaluations, S. aureus bacteria are more sensitive to both NPs. These nanocomposites combine the advantages of MNP and antibacterial effects, with distinctive merits including easy preparation, high inactivation capacity, and easy isolation from sample solutions by the application of an external magnetic field.
Biogenic synthesis and thermo-magnetic study of highly porous carbon nanotubes
Plasma treated fabrics coated with naturally derived Ag-NPs for biomedical application
Antimicrobial and anti-biofilm activities of Bi subnitrate and BiNPs produced by Delftia sp. SFG against clinical isolates of Staphylococcus aureus, Pseudomonas aeruginosa, and Proteus mirabilis
Simple, green approach for the synthesis of solid support-embedded PdNPs for ligand exchange
Mn-doped ZnS quantum dots-chlorin e6 shows potential as a treatment for chondrosarcoma: an in vitro study
Production of a new platform based on fumed and mesoporous silica nanoparticles for enhanced solubility and oral bioavailability of raloxifene HCl
Synthesis and characterisation of iron oxide nanoparticles conjugated with epidermal growth factor receptor (EGFR) monoclonal antibody as MRI contrast agent for cancer detection
Green synthesis of magnetically recoverable Fe3O4/HZSM-5 and its Ag nanocomposite using Juglans regia L. leaf extract and their evaluation as catalysts for reduction of organic pollutants
Surfactant-mediated synthesis of polyhydroxybutyrate (PHB) nanoparticles for sustained drug delivery
HER-2 aptamer-targeted Ecoflex® nanoparticles loaded with docetaxel promote breast cancer cells apoptosis and anti-metastatic effect
Synergistic evaluation of AgO2 nanoparticles with ceftriaxone against CTXM and blaSHV genes positive ESBL producing clinical strains of Uro-pathogenic E. coli
Improving adaptive receivers performance in molecular communication via diffusion
Evaluation of antibacterial property of hydroxyapatite and zirconium oxide-modificated magnetic nanoparticles against Staphylococcus aureus and Escherichia coli
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