Synergistic antibacterial activity of gold nanoparticles caused by apoptosis‐like death

2019 ◽  
Vol 127 (3) ◽  
pp. 701-712 ◽  
Author(s):  
B. Lee ◽  
D.G. Lee
Keyword(s):  
Gold Nanoparticles ◽  
Antibacterial Activity ◽  
Synergistic Antibacterial Activity

Antibacterial Activity of Gold Nanoparticles Conjugated by Aminoglycosides Against A. baumannii Isolates from Burn Patients

2019 ◽  
Vol 13 (3) ◽  
pp. 256-264 ◽  
Author(s):  
Mehdi Rostami rad ◽  
Hossein Kazemian ◽  
Fateme Yazdani ◽  
Mohammad Reza Zand Monfared ◽  
Hoseinali Rahdar ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Antibacterial Activity ◽  
Burn Patients

scholarly journals Effect of Gold Nanoparticles and Silicon on the Bioactivity and Antibacterial Properties of Hydroxyapatite/Chitosan/Tricalcium Phosphate-Based Biomicroconcretes

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3854
Author(s):  
Joanna Czechowska ◽  
Ewelina Cichoń ◽  
Anna Belcarz ◽  
Anna Ślósarczyk ◽  
Aneta Zima
Keyword(s):  
Gold Nanoparticles ◽  
Antibacterial Activity ◽  
Tricalcium Phosphate ◽  
Setting Time ◽  
Antibacterial Properties ◽  
Bone Substitutes ◽  
Bacterial Strains ◽  
Setting Times ◽  
Biological Studies

Bioactive, chemically bonded bone substitutes with antibacterial properties are highly recommended for medical applications. In this study, biomicroconcretes, composed of silicon modified (Si-αTCP) or non-modified α-tricalcium phosphate (αTCP), as well as hybrid hydroxyapatite/chitosan granules non-modified and modified with gold nanoparticles (AuNPs), were designed. The developed biomicroconcretes were supposed to combine the dual functions of antibacterial activity and bone defect repair. The chemical and phase composition, microstructure, setting times, mechanical strength, and in vitro bioactive potential of the composites were examined. Furthermore, on the basis of the American Association of Textile Chemists and Colorists test (AATCC 100), adapted for chemically bonded materials, the antibacterial activity of the biomicroconcretes against S. epidermidis, E. coli, and S. aureus was evaluated. All biomicroconcretes were surgically handy and revealed good adhesion between the hybrid granules and calcium phosphate-based matrix. Furthermore, they possessed acceptable setting times and mechanical properties. It has been stated that materials containing AuNPs set faster and possess a slightly higher compressive strength (3.4 ± 0.7 MPa). The modification of αTCP with silicon led to a favorable decrease of the final setting time to 10 min. Furthermore, it has been shown that materials modified with AuNPs and silicon possessed an enhanced bioactivity. The antibacterial properties of all of the developed biomicroconcretes against the tested bacterial strains due to the presence of both chitosan and Au were confirmed. The material modified simultaneously with AuNPs and silicon seems to be the most promising candidate for further biological studies.

scholarly journals Novel Synthesis of Kanamycin Conjugated Gold Nanoparticles with Potent Antibacterial Activity

2016 ◽  
Vol 7 ◽  
Author(s):  
Jason N. Payne ◽  
Hitesh K. Waghwani ◽  
Michael G. Connor ◽  
William Hamilton ◽  
Sarah Tockstein ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Antibacterial Activity ◽  
Novel Synthesis

Synthesis of substituted-amidine derivatives of avibactam and synergistic antibacterial activity with meropenem

2021 ◽  
Vol 31 (4) ◽  
pp. 498-500
Author(s):  
Jian Sun ◽  
Lili He ◽  
Yuanyu Gao ◽  
Lijuan Zhai ◽  
Jingwen Ji ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Derivatives Of ◽  
Synergistic Antibacterial Activity

Study on the concentration of gold nanoparticles for antibacterial activity

2021 ◽  
Vol 12 (3) ◽  
pp. 035003
Author(s):  
Nidhishree M Suchak ◽  
Prachi H Desai ◽  
M P Deshpande ◽  
S H Chaki ◽  
Swati J Pandya ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Antibacterial Activity

ZnO/Ag nanohybrid: synthesis, characterization, synergistic antibacterial activity and its mechanism

RSC Advances ◽  
2012 ◽  
Vol 2 (3) ◽  
pp. 930-940 ◽  
Author(s):  
Somnath Ghosh ◽  
V. S. Goudar ◽  
K. G. Padmalekha ◽  
S. V. Bhat ◽  
S. S. Indi ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Synergistic Antibacterial Activity

scholarly journals Antibacterial activity of biosynthesized gold nanoparticles using biomolecules from Lignosus rhinocerotis and chitosan

2019 ◽  
Vol 27 (2) ◽  
pp. 283-292 ◽  
Author(s):  
Haliza Katas ◽  
Chei Sin Lim ◽  
Ahmad Yasser Hamdi Nor Azlan ◽  
Fhataheya Buang ◽  
Mohd Fauzi Mh Busra
Keyword(s):  
Gold Nanoparticles ◽  
Antibacterial Activity ◽  
Lignosus Rhinocerotis

scholarly journals Biosynthesized gold nanoparticles-doped hydroxyapatite as antibacterial and antioxidant nanocomposite

2021 ◽  
Author(s):  
Is Fatimah ◽  
Putwi Widya Citradewi ◽  
Amri Yahya ◽  
Bambang Nugroho ◽  
Habibi Hidayat ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Antioxidant Activity ◽  
Particle Size ◽  
Gold Nanoparticles ◽  
Antibacterial Activity ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging

Abstract The composite of green synthesized gold nanoparticles (Au NPs)-doped hydroxyapatite (HA) has been prepared. The gold nanoparticles were produced via bioreduction of HAuCl4 with Clitoria ternatea flower extract, and utilized in the synthesis of hydroxyapatite using Ca(OH)2 and ammonium diphosphate as precursor. The aim of this research is to study the structural analysis of the composite and antibacterial activity test toward Eschericia coli, Staphylococcus aureus, Klebsiela pneumoniae, and Streptococcus pyogenes. In addition, the antioxidant activity was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging method. The monitoring of gold nanoparticles formation was conducted by UV–vis spectroscopy and particle size analyses, meanwhile the synthesized composite was studied using X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The results showed that homogeneously dispersed gold nanoparticles in HA structure was obtained with the particle size ranging at 5-80 nm. The nanocomposite demonstrated antibacterial activity against tested bacteria. The nanocomposite expressed an antioxidant activity as shown by the DPPH scavenging activity of 66 and 58% at the concentration of 100 μg/mL and 50 μg/mL, respectively.

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