Influence of the Concentration of Fe and Cu Nanoparticles on the Dynamics of the Size Distribution of Nanoparticles

Gudkov, Sergey V.; Baimler, Ilya V.; Уваров, О. В.; Smirnova, Veronika V.; Volkov, Mikhail Yu; Semenova, Anastasia; Lisitsyn, Andrey B.

doi:10.3389/fphy.2020.622551

Cited by 17 publications

(7 citation statements)

References 22 publications

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“…The result showed that the higher concentration of AgNO3, the bigger particle size of AgNP, as shown at Table 3, respectively. This result was in accordance to the previous study which combination of high concentration and high temperature produced AgNP with bigger particle size (19,20).…”

Section: Synthesis and Characterization Of Silver Nanoparticlessupporting

confidence: 93%

Formulasi Nasal Spray Anti-Influenza yang Mengandung Nanopartikel Perak

Sutriyo

Wylie

Putri

et al. 2021

JFI

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Influenza A virus is one of the most common causes of respiratory disease in the world. Even though, vaccines and anti-influenza virus are become the first line for therapy, but the mutation ability of influenza virus is able to cause several outbreaks in the world. Silver nanoparticles (AgNP) have been proven to exhibit antiviral activity; however, the use of AgNP in pharmaceutical products is still limited. In this study, we aimed to formulate nasal spray containing AgNP, to evaluate its physicochemical properties, and its antiviral activity toward H5N1 influenza A virus. AgNP were synthesized using chemical reduction method with polyvinyl alcohol as stabilizer, and further prepared into nasal spray product. Physicochemical properties and anti-hemagglutination activity of nasal spray were further evaluated. The nasal spray contained different size of AgNP (less and more than 50 nm) showed physical stability after 28 days storage. However, Anti-influenza evaluation of nasal spray contained AgNP less than 50 nm exhibited better anti-hemagglutination activity against influenza A virus.

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Section: Synthesis and Characterization Of Silver Nanoparticlessupporting

confidence: 93%

Formulasi Nasal Spray Anti-Influenza yang Mengandung Nanopartikel Perak

Sutriyo

Wylie

Putri

et al. 2021

JFI

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“…It should be noted that the degree of aggregation of colloidal dispersions depends not only on the NP characteristics, including size, surface charge and composition, but also on their concentration. For instance, recently, it was shown that using Fe NPs, the aggregation rate increases by increasing iron concentration [44]. It is difficult to quantify the impact of such effect in complex systems such as biological media; however, colloidal stability should be carefully checked during the experiments, and this unavoidable effect needs consideration when interpreting the data.…”

Section: Discussionmentioning

confidence: 99%

Impact of Tuning the Surface Charge Distribution on Colloidal Iron Oxide Nanoparticle Toxicity Investigated in Caenorhabditis elegans

et al. 2021

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Assessing the toxic effect in living organisms remains a major issue for the development of safe nanomedicines and exposure of researchers involved in the synthesis, handling and manipulation of nanoparticles. In this study, we demonstrate that Caenorhabditis elegans could represent an in vivo model alternative to superior mammalians for the collection of several physiological functionality parameters associated to both short-term and long-term effects of colloidally stable nanoparticles even in absence of microbial feeding, usually reported to be necessary to ensure appropriate intake. Contextually, we investigated the impact of surface charge on toxicity of superparamagnetic iron oxide coated with a wrapping polymeric envelop that confers them optimal colloidal stability. By finely tuning the functional group composition of this shallow polymer–obtaining totally anionic, partially pegylated, partially anionic and partially cationic, respectively–we showed that the ideal surface charge organization to optimize safety of colloidal nanoparticles is the one containing both cationic and anionic groups. Our results are in accordance with previous evidence that zwitterionic nanoparticles allow long circulation, favorable distribution in the tumor area and optimal tumor penetration and thus support the hypothesis that zwitterionic iron oxide nanoparticles could be an excellent solution for diagnostic imaging and therapeutic applications in nanooncology.

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“…Было обнаружено, что скорость образования АФК возрастает экспоненциально при увеличении частоты механического воздействия. Основные способы генерации пероксида водорода, вероятно, связаны с образованием синглетного кислорода и его дальнейшим восстановлением, а альтернативным путем является образование перекиси водорода в результате рекомбинации гидроксильных радикалов [121]. Как правило, сразу после механического воздействия рН воды повышается.…”

Section: обработка с помощью вихревого перемешивания встряхивания и и...unclassified

The effects of physical treatment on physicochemical and biological properties of water and aqueous solutions

Don,

Stepanov,

Tarasov

2023

Fine Chem. Technol.

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Objectives. Changes to the properties of water caused by factors such as pressure or temperature, can only be explained by its structural changes. Scientists study changes to the properties of water due to various physical stimuli only without the addition of any substances. Examples of stimuli are acoustic exposure, thermal exposure, pressure variation, shaking, intensive vibration treatment followed by dilutions, vortexing, bubble generation, inter alia.The aim of the present review article is to summarize the available data on how the above processes affect the physicochemical and biological properties of water and aqueous solutions.Results. It has been shown that heating makes water less compressible and decreases air solubility in water, while cooling enhances its viscosity. Acoustic exposure makes the structure of water become coarse-grained, followed by an increase the number of large clusters, pH and temperature inside a cavitation bubble. High pressure enhances the viscosity, self-diffusion, and compressibility of water. For bubble processed water, there are changes in the spin-spin and spin-lattice relaxation times. Reactive oxygen species are formed, as well as increased solubility of gases in liquids and reduced friction. Vortex process technology causes an increase of electrical conductivity of water and reduced viscosity. Intensive vibration treatment and dilution processes result in changes in electrical conductivity of water, dissolved gas concentration, ultrasonic wave velocity, рН, surface tension, dielectric constant, and spectral response. There is also data to support the biological effects of different types of physical treatment of solutions.Conclusions. This review shows that physical treatment of water can induce changes both in physicochemical and biological properties of water and aqueous solutions.

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Influence of the Concentration of Fe and Cu Nanoparticles on the Dynamics of the Size Distribution of Nanoparticles

Cited by 17 publications

References 22 publications

Formulasi Nasal Spray Anti-Influenza yang Mengandung Nanopartikel Perak

Formulasi Nasal Spray Anti-Influenza yang Mengandung Nanopartikel Perak

Impact of Tuning the Surface Charge Distribution on Colloidal Iron Oxide Nanoparticle Toxicity Investigated in Caenorhabditis elegans

The effects of physical treatment on physicochemical and biological properties of water and aqueous solutions

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