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Source: International Journal of Environmental Research and Public Health

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Total 2127 results found since Jan 2013.

IJERPH, Vol. 15, Pages 1037: Clinical Efficacy Associated with Enhanced Antioxidant Enzyme Activities of Silver Nanoparticles Biosynthesized Using Moringa oleifera Leaf Extract, Against Cutaneous Leishmaniasis in a Murine Model of Leishmania major
In conclusion, treatment with silver nanoparticles biosynthesized using Moringa oleifera extract has higher and faster clinical efficacy than standard pentavalent antimonial treatment, probably by boosting the endogenous antioxidant activity.
Source: International Journal of Environmental Research and Public Health - May 22, 2018 Category: Environmental Health Authors: Manal El-khadragy Ebtesam M. Alolayan Dina M. Metwally Mohamed F. Serag El-Din Sara S. Alobud Nour I. Alsultan Sarah S. Alsaif Manal A. Awad Ahmed E. Abdel Moneim Tags: Article Source Type: research

IJERPH, Vol. 14, Pages 747: Disinfection of the Water Borne Pathogens Escherichia coli and Staphylococcus aureus by Solar Photocatalysis Using Sonochemically Synthesized Reusable Ag@ZnO Core-Shell Nanoparticles
Water borne pathogens present a threat to human health and their disinfection from water poses a challenge, prompting the search for newer methods and newer materials. Disinfection of the Gram-negative bacterium Escherichia coli and the Gram-positive coccal bacterium Staphylococcus aureus in an aqueous matrix was achieved within 60 and 90 min, respectively, at 35 °C using solar-photocatalysis mediated by sonochemically synthesized Ag@ZnO core-shell nanoparticles. The efficiency of the process increased with the increase in temperature and at 55 °C the disinfection for the two bacteria could be achieved in 45 and 60 min, ...
Source: International Journal of Environmental Research and Public Health - July 10, 2017 Category: Environmental Health Authors: Sourav Das Neha Ranjana Ananyo Jyoti Misra Mrutyunjay Suar Amrita Mishra Ashok J. Tamhankar Cecilia St ålsby Lundborg Suraj K. Tripathy Tags: Article Source Type: research

IJERPH, Vol. 18, Pages 8361: Changes of Gene Expression Patterns from Aquatic Organisms Exposed to Metal Nanoparticles
uza Metal nanoparticles are used in various branches of industry due to their physicochemical properties. However, with intensive use, most of the waste and by-products from industries and household items, and from weathering of products containing nanoparticles, end up in the waters. These pollutants pose a risk to aquatic organisms, one of which is a change in the expression of various genes. Most of the data that focus on metal nanoparticles and their effects on aquatic organisms are about copper and silver nanoparticles, which is due to their popularity in general industry, but information about other nanoparticula...
Source: International Journal of Environmental Research and Public Health - August 7, 2021 Category: Environmental Health Authors: Mateusz Kulasza Lidia Skuza Tags: Review Source Type: research

IJERPH, Vol. 15, Pages 606: Antibacterial Activity of Orthodontic Cement Containing Quaternary Ammonium Polyethylenimine Nanoparticles Adjacent to Orthodontic Brackets
dad Nurit Beyth Enamel demineralization is a common problem found in patients using orthodontic devices, such as orthodontic braces. It was found that Streptoccocus mutans growth increases adjacent to orthodontic devices, which may result in caries development. Incorporated antibacterial quaternary ammonium polyethylenimine (QPEI) nanoparticles were previously shown to be highly efficacious against various bacteria. Combining antibacterial materials in orthodontic cement may be advantageous to prevent bacterial outgrowth adjacent to orthodontic brackets. The aim was to evaluate the efficiency of orthodontic cement co...
Source: International Journal of Environmental Research and Public Health - March 27, 2018 Category: Environmental Health Authors: Eldad Sharon Revital Sharabi Adi Eden Asher Zabrovsky Gilad Ben-Gal Esi Sharon Yoav Pietrokovski Yael Houri-Haddad Nurit Beyth Tags: Article Source Type: research

IJERPH, Vol. 16, Pages 2185: Optimization and Application of Bioflocculant Passivated Copper Nanoparticles in the Wastewater Treatment
hotla Nanotechnology offers a great opportunity for efficient removal of pollutants and pathogenic microorganisms in water. Copper nanoparticles were synthesized using a polysaccharide bioflocculant and its flocculation, removal efficiency, and antimicrobial properties were evaluated. The synthesized nanoparticles were characterized using thermogravimetry, UV-Visible spectroscopy, Fourier-transform infrared spectroscopy (FT-IR), powder X-ray diffraction, scanning electron microscope (SEM), and transmission electron microscope (TEM). The highest flocculation activity (FA) was achieved with the lowest concentration of co...
Source: International Journal of Environmental Research and Public Health - June 19, 2019 Category: Environmental Health Authors: Nkosinathi Goodman Dlamini Albertus Kotze Basson Viswanadha Srirama Rajasekhar Pullabhotla Tags: Article Source Type: research

IJERPH, Vol. 17, Pages 1005: Exposure of CuO Nanoparticles Contributes to Cellular Apoptosis, Redox Stress, and Alzheimer ’s Aβ Amyloidosis
This study provides evidence that CuONP induces neuronal cell apoptosis, discerns a likely p53-dependent apoptosis pathway and builds out the relationship between nanoparticles and Alzheimer’s disease (AD) through the involvement of reactive oxygen species (ROS) and increased Aβ levels in SH-SY5Y and H4 cells. Our results implicate that exposure to CuONP may be an environmental risk factor for AD. For public health concerns, regulation for environmental or occupational exposure of CuONP are thus warranted given AD has already become a pandemic.
Source: International Journal of Environmental Research and Public Health - February 4, 2020 Category: Environmental Health Authors: Ying Shi Alexander R. Pilozzi Xudong Huang Tags: Article Source Type: research

IJERPH, Vol. 15, Pages 794: The Effect of UV Aging on Antimicrobial and Mechanical Properties of PLA Films with Incorporated Zinc Oxide Nanoparticles
Duquesne The aim of this study was to examine the influence of accelerated UV-aging on the activity against chosen microorganisms and the mechanical properties of poly-lactic acid (PLA) films enhanced with ZnO nanoparticles. The pure PLA films and tri-layered PLAZnO1%/PLA/PLAZnO1% films of 150 µm thickness were extruded. The samples were treated with UV-A and Q-SUN irradiation. After irradiation the antimicrobial activity and mechanical properties of the films were analyzed. The results of the study demonstrated that PLA films did not inhibit the growth of Staphylococcus aureus, Bacillus cereus, Escherichia coli, Baci...
Source: International Journal of Environmental Research and Public Health - April 18, 2018 Category: Environmental Health Authors: Ma łgorzata Mizielińska Urszula Kowalska Micha ł Jarosz Patrycja Sumi ńska Nicolas Landercy Emmanuel Duquesne Tags: Article Source Type: research

IJERPH, Vol. 16, Pages 3617: The Influence of Available Cu and Au Nanoparticles (NPs) on the Survival of Water Fleas (Daphnia pulex)
Czyż Applications of nanotechnologies in different sectors and everyday items are very promising and their popularity continues to grow. The number of products containing nanoparticles makes environmental exposure to nanoparticles inevitable. The current understanding of the relationships between nanoparticles and the environment is inadequate despite the fast growth of nanotechnologies. The aim of the study was to investigate the influence of copper and gold nanoparticles on Daphnia pulex survival. Our study included 48-hour acute toxicity tests and determination of median lethal concentration values (LC50s) for Cu...
Source: International Journal of Environmental Research and Public Health - September 25, 2019 Category: Environmental Health Authors: Garncarek Kowalska-G óralska Senze Czy ż Tags: Article Source Type: research

IJERPH, Vol. 17, Pages 1758: Comparison of Azithromycin Removal from Water Using UV Radiation, Fe (VI) Oxidation Process and ZnO Nanoparticles
dam Rezania Antibiotics are resistant to biodegradation, and their removal by biological processes is difficult. The purpose of this study was to investigate the removal of azithromycin from water using ultraviolet radiation (UV), Fe (VI) oxidation process and ZnO nanoparticles. The effect of different parameters such as pH, temperature, hydraulic retention time (HRT), the concentration of Fe (VI) and ZnO nanoparticles and UV intensity on the removal of azithromycin from water was investigated. The optimal conditions for the removal of azithromycin were a pH of 2, a temperature of 25 °C, a HRT of 15 min,...
Source: International Journal of Environmental Research and Public Health - March 7, 2020 Category: Environmental Health Authors: Talaiekhozani Joudaki Banisharif Eskandari Cho Moghadam Rezania Tags: Article Source Type: research

IJERPH, Vol. 17, Pages 3622: In Vitro Evaluation of Iron-Induced Salivary Lipid Oxidation Associated with Exposure to Iron Nanoparticles: Application Possibilities and Limitations for Food and Exposure Sciences
This study aimed to assess whether ingestion of iron nanoparticles from drinking water could be detected through flavor perception using in vitro salivary lipid oxidation as an indicator for metallic flavor perception. Ten female subjects, aged 29–59 years, donated saliva samples for use in the in vitro experiments. Test samples consisted of 1:1 mixture of saliva and bottled drinking water (control) and three treatment solutions, spiked with ferrous sulfate, stabilized zerovalent iron nanoparticles (nZVI), and an aggregated/microsized suspension of mixed zerovalent iron and microsized suspension of iron and i...
Source: International Journal of Environmental Research and Public Health - May 20, 2020 Category: Environmental Health Authors: Mirlohi Tags: Article Source Type: research

IJERPH, Vol. 17, Pages 5817: Zero-Valent Iron Nanoparticles for Soil and Groundwater Remediation
-Vilela Zero-valent iron has been reported as a successful remediation agent for environmental issues, being extensively used in soil and groundwater remediation. The use of zero-valent nanoparticles have been arisen as a highly effective method due to the high specific surface area of zero-valent nanoparticles. Then, the development of nanosized materials in general, and the improvement of the properties of the nano-iron in particular, has facilitated their application in remediation technologies. As the result, highly efficient and versatile nanomaterials have been obtained. Among the possible nanoparticle systems, t...
Source: International Journal of Environmental Research and Public Health - August 10, 2020 Category: Environmental Health Authors: Alazne Galdames Leire Ruiz-Rubio Maider Orueta Miguel S ánchez-Arzalluz Jos é Luis Vilas-Vilela Tags: Review Source Type: research

IJERPH, Vol. 12, Pages 1253-1278: Environmental Geochemistry of Cerium: Applications and Toxicology of Cerium Oxide Nanoparticles
Cerium is the most abundant of rare-earth metals found in the Earth’s crust. Several Ce-carbonate, -phosphate, -silicate, and -(hydr)oxide minerals have been historically mined and processed for pharmaceutical uses and industrial applications. Of all Ce minerals, cerium dioxide has received much attention in the global nanotechnology market due to their useful applications for catalysts, fuel cells, and fuel additives. A recent mass flow modeling study predicted that a major source of CeO2 nanoparticles from industrial processing plants (e.g., electronics and optics manufactures) is likely to reach the terrestrial enviro...
Source: International Journal of Environmental Research and Public Health - January 23, 2015 Category: Environmental Health Authors: Jessica DahleYuji Arai Tags: Review Source Type: research

IJERPH, Vol. 15, Pages 2218: Fabrication of Stabilized Fe –Mn Binary Oxide Nanoparticles: Effective Adsorption of 17β-Estradiol and Influencing Factors
IJERPH, Vol. 15, Pages 2218: Fabrication of Stabilized Fe–Mn Binary Oxide Nanoparticles: Effective Adsorption of 17β-Estradiol and Influencing Factors International Journal of Environmental Research and Public Health doi: 10.3390/ijerph15102218 Authors: Qimeng Ning Zhihong Yin Yunguo Liu Xiaofei Tan Guangming Zeng Luhua Jiang Shaobo Liu Sirong Tian Ni Liu Xiaohua Wang Fe–Mn binary oxide nanoparticles (FMBON) were reported to be high performance as adsorbent for pollutants removal from aqueous solution. However, there are still limitations in practice application due to the FMBON t...
Source: International Journal of Environmental Research and Public Health - October 11, 2018 Category: Environmental Health Authors: Qimeng Ning Zhihong Yin Yunguo Liu Xiaofei Tan Guangming Zeng Luhua Jiang Shaobo Liu Sirong Tian Ni Liu Xiaohua Wang Tags: Article Source Type: research

IJERPH, Vol. 13, Pages 47: Computer Optimization of Biodegradable Nanoparticles Fabricated by Dispersion Polymerization
Quality by design (QbD) in the pharmaceutical industry involves designing and developing drug formulations and manufacturing processes which ensure predefined drug product specifications. QbD helps to understand how process and formulation variables affect product characteristics and subsequent optimization of these variables vis-à-vis final specifications. Statistical design of experiments (DoE) identifies important parameters in a pharmaceutical dosage form design followed by optimizing the parameters with respect to certain specifications. DoE establishes in mathematical form the relationships between critical process ...
Source: International Journal of Environmental Research and Public Health - December 22, 2015 Category: Environmental Health Authors: Emmanuel AkalaSimeon AdesinaOluwaseun Ogunwuyi Tags: Article Source Type: research