نتایج جستجو برای: agnps

تعداد نتایج: 1823  

Journal: :Journal of applied microbiology 2012
A F Wady A L Machado V Zucolotto C A Zamperini E Berni C E Vergani

AIM This study firstly evaluated the activity of a silver nanoparticle (AgNPs) solution against Candida albicans and then the effect of incorporation of AgNPs into a denture base acrylic resin on the material's hydrophobicity, C. albicans adhesion and biofilm formation. METHODS AND RESULTS The AgNPs solution was synthesized by chemical reduction and characterized. Minimum inhibitory (MIC) and...

2018
Chojniak Joanna Libera Marcin Król Ewa Płaza Grażyna

The present study focused on the evaluation of a nonspecific synergistic effect of biogenic silver nanoparticles (AgNPs) in combination with biosurfactants against environmental bacteria and fungi. The AgNPs were synthesized in the culture supernatants of the biosurfactant producer Bacillus subtilis grown in brewery effluent, molasses or Luria-Bertani media. Antibacterial activities were tested...

2017
Jericó J. Bello-Bello Rocío A. Chavez-Santoscoy Carlos A. Lecona-Guzmán Nina Bogdanchikova Josafhat Salinas-Ruíz Fernando Carlos Gómez-Merino Alexey Pestryakov

Background Hormesis is considered a dose-response phenomenon characterized by growth stimulation at low doses and inhibition at high doses. The hormetic response by silver nanoparticles (AgNPs) on in vitro multiplication of sugarcane was evaluated using a temporary immersion system. Methods Sugarcane shoots were used as explants cultured in Murashige and Skoog medium with AgNPs at concentrati...

2015
Mariusz Zuberek Dominika Wojciechowska Damian Krzyzanowski Sylwia Meczynska-Wielgosz Marcin Kruszewski Agnieszka Grzelak

BACKGROUND The increasing body of evidence suggest that nanomaterials toxicity is associated with generation of oxidative stress. In this paper we investigated the role of respiration in silver nanoparticles (AgNPs) generated oxidative stress and toxicity. Since cancer cells rely on glucose as the main source of energy supply, glucose availability might be an important determinant of NPs toxici...

2016
Vasudeva Reddy Netala Murali Satyanarayana Bethu Bobbu Pushpalatha Vijaya Bhaskar Baki Sani Aishwarya J Venkateswara Rao Vijaya Tartte

An endophytic fungal strain isolated from the leaves of Gymnema sylvestre was identified as Pestalotiopsis microspora VJ1/VS1 based on nucleotide sequencing of internal transcribed spacer region (ITS 1-5.8S-ITS 2) of 18S rRNA gene (NCBI accession number KX213894). In this study, an efficient and ecofriendly approach has been reported for the synthesis of silver nanoparticles (AgNPs) using aqueo...

2014
Sangiliyandi Gurunathan Jae Woong Han Deug-Nam Kwon Jin-Hoi Kim

Silver nanoparticles (AgNPs) have been used as antibacterial, antifungal, antiviral, anti-inflammtory, and antiangiogenic due to its unique properties such as physical, chemical, and biological properties. The present study was aimed to investigate antibacterial and anti-biofilm activities of silver nanoparticles alone and in combination with conventional antibiotics against various human patho...

2016
NIRMAL KUMAR SATYAJEET DAS ANUPAM JYOTI SANKET KAUSHIK

Objective: Green synthesis, characterization of silver nanoparticles (AgNPs) and study of the synergistic effect of AgNPs with antibiotic doxycycline against Klebsiella pneumonia. Methods: AgNps were synthesized from bacteria isolated from samples obtained from petroleum soil. After characterization of the nanoparticles, the antibacterial activity of the nanoparticle was studied, and simultaneo...

2013
Florence Okafor Afef Janen Tatiana Kukhtareva Vernessa Edwards Michael Curley

Our research focused on the production, characterization and application of silver nanoparticles (AgNPs), which can be utilized in biomedical research and environmental cleaning applications. We used an environmentally friendly extracellular biosynthetic technique for the production of the AgNPs. The reducing agents used to produce the nanoparticles were from aqueous extracts made from the leav...

2015
Avijit Paul Hee Ju Sabarinathan Rangasamy Yumi Shim Joon Myong Song

With advancements in nanotechnology, silver has been engineered into a nanometre size and has attracted great research interest for use in the treatment of wounds. Silver nanoparticles (AgNPs) have emerged as a potential alternative to conventional antibiotics because of their potential antimicrobial property. However, AgNPs also induce cytotoxicity, generate reactive oxygen species (ROS), and ...

2018
Miriam Buttacavoli Nadia Ninfa Albanese Gianluca Di Cara Rosa Alduina Claudia Faleri Michele Gallo Giuseppe Pizzolanti Giuseppe Gallo Salvatore Feo Franco Baldi Patrizia Cancemi

Silver nanoparticles (AgNPs), embedded into a specific polysaccharide (EPS), were biogenerated by Klebsiella oxytoca DSM 29614 under aerobic (AgNPs-EPSaer) and anaerobic conditions (AgNPs-EPSanaer). Both AgNPs-EPS matrices were tested by MTT assay for cytotoxic activity against human breast (SKBR3 and 8701-BC) and colon (HT-29, HCT 116 and Caco-2) cancer cell lines, revealing AgNPs-EPSaer as th...

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