The efficacy of cadmium oxide nanoparticles on pseudomonas aeruginosa bacteria

Abstract

For many centuries, the metals are used as the antibacterial factors. Whereas, the nanoparticles are mostly heavy metal oxides, they have a high tendency to interact with biological molecules and develop the deactivation or elimination of the virus or bacteria. In the present study, the antibacterial effect of Cadmium Oxide nanoparticles on Pseudomonas Aeruginosa bacteria was analyzed which are considered some sort of resistant bacteria against antibiotics now. The aim of his study was to investigate the antibacterial properties of onekind of nno-specimen (cdo) against Pseudomonas Aeruginosa. Our study was research perusal. In the first study, the optical density of Pseudomonas Aeruginosa culture was observed in the presence of 5, 10, 15µg/ml. in the scond study, 600nm of Pseudomonas Aeruginosa was separately exposed to nanoparticles at 37° c in water. In third study, we studied thew growth of Pseudomonas Aeruginosa in solid medium with and without nanoparticles. The results represented that there is a direct relation between the nanoparticles applied dosage and the restrain effect-augmentation of applied dosage results in restrain effect increase. In the study of environmental factors (pH and temperature), the results are in line with the inherent physiology of the bacteria, however, there was a significant decline in the number of analyzed bacteria cells due to the Double Effect of nanoparticle-pH variations as well as nanoparticle-temperature variations. In the present study, enhancement in 474 Bahareh Salehi, Sedigheh Mehrabian and Abbas Akhavan Sepahi Cadmium Oxide nanoparticles density leads to the elevation of antimicrobial feature and the reduction of bacteria growing speed which is in line with the other surveys about the nanoparticles effects on microorganisms. It could be interpreted that, in the presence of nanoparticles, cellular destruction speeds up.

Macroporous epoxy-based monoliths for rapid quantification of Pseudomonas aeruginosa by adsorption elution method optimized for qPCR

“…For P. aeruginosa , growth on agar plates was observed for all pH values above pH 3.3 (overgrown after overnight incubation) and no growth was observed for pH values below pH 3.2 (no colonies visible), indicating a change in physiology at these pH values. This result is comparable with the result of another study investigating the effect of low pH values on the survival of P. aeruginosa [ 31 ] while a different study found good bacterial growth for pH higher than 3.8 [ 32 ]. For all filtrations, the cultivated P. aeruginosa samples were acidified before filtration and the optimized protocol (MAF-OH, 5-L initial sample volume, BEG elution buffer) was used.…”

Biosynthesis of gold Nanoparticles by Lyngbya sp. Clone Zen / Mira 16S ribosomal RNA gene and its antibacterial activity

“…The synthesis of nanoparticles was done by using the ratio 1:1 of cyanobacterial extract : chloro auric chloride (HAucl4) (1) mM (13) using magnetic stirrer at (80) C for (15) min until color of the reaction mixture change from pale yellow to purple ( Fig 3) .…”

“…The synthesized gold nanoparticles as antibacterial activity of synthesized AuNps were studied using the turbidity methods (15) .…”

Combination of Ciprofloxacin and Silver Nanoparticles for Treatment of Multi-Drug Resistant Pseudomonas Aeruginosa in Egypt

“…Nanoparticles of heavy metals as metal oxides have a high ability to interact with pathogenic microorganisms and deactivate or eliminate the virus or bacteria especially P. aeruginosa (Salehi et al, 2013;and Chauhan et al, 2014). Effectiveness of nanoparticles as antimicrobial agents was due to small doses used, low toxicity and lack of side effects (Lara et al, 2010) and its bactericidal activity depends on their concentration, their stability, and size of nanoparticles (Raghupathi et al, 2011).…”