Photo-inactivation and efflux pump inhibition of methicillin resistant Staphylococcus aureus using thiolated cobalt doped ZnO nanoparticles

Iqbal, Gulrukh; Faisal, Sulaiman; Khan, Sara; Shams, Dilawar Farhan; Nadhman, Akhtar

doi:10.1016/j.jphotobiol.2019.01.021

Cited by 40 publications

(21 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…25 Several reports are available regarding the doping of ZnO with metal ions of Ni, Co, Fe, Mn, Cr, Al, and Ag to change its properties for photocatalysis, sensors, and antibacterial activity. [26][27][28][29][30][31][32] Among the above dopants, Ni 2+ is favorable to incorporate into the ZnO lattice due to its same valence state (+2) and similar ionic radii (Ni 2+ , 0.69 A; Zn 2+ , 0.74 A). Moreover, various reports regarding the antibacterial activity of metal ion-doped ZnO, Ag, 27,28 Co, 29,30 and Cr 31,32 have been reported.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial potential of Ni-doped zinc oxide nanostructure: comparatively more effective against Gram-negative bacteria including multi-drug resistant strains

2020

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Antibacterial potential of Ni-doped zinc oxide nanostructure: comparatively more effective against Gram-negative bacteria including multi-drug resistant strains

2020

View full text Add to dashboard Cite

show abstract

“…Recent studies have been exploring strategies in which sunlight is used instead of NIR lasers to trigger the photothermal effect. For example, thiolated cobalt-doped ZnO nanoparticles were synthesized to photo-inhibit the efflux pump in multidrug-resistant bacteria [105]. The antibacterial activity of this nanosystem against methicillin-resistant S. aureus was found to be 100% at a 10 µg/mL concentration and 15 min exposure to sunlight.…”

Section: Applications Of Other Types Of Nanoparticles For Photothermamentioning

confidence: 99%

Photothermally active nanoparticles as a promising tool for eliminating bacteria and biofilms

Borzenkov¹,

Pallavicini²,

Taglietti³

et al. 2020

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

Bacterial contamination is a severe issue that affects medical devices, hospital tools and surfaces. When microorganisms adhere to a surface (e.g., medical devices or implants) they can develop into a biofilm, thereby becoming more resistant to conventional biocides and disinfectants. Nanoparticles can be used as an antibacterial agent in medical instruments or as a protective coating in implantable devices. In particular, attention is being drawn to photothermally active nanoparticles that are capable of converting absorbed light into heat. These nanoparticles can efficiently eradicate bacteria and biofilms upon light activation (predominantly near the infrared to near-infrared spectral region) due a rapid and pronounced local temperature increase. By using this approach new, protective, antibacterial surfaces and materials can be developed that can be remotely activated on demand. In this review, we summarize the state-of-the art regarding the application of various photothermally active nanoparticles and their corresponding nanocomposites for the light-triggered eradication of bacteria and biofilms.

show abstract

“…The reaction was carried out into sealed quartz cuvettes with IR filter (400-800 nm) for 30 s under sunlight. After each 30 s photobleaching of the DPBF was measured by using UV-3000 Spectrophotometer for 5 min Methylene blue was used as a control [4,24].…”

Section: Morphological and Optical Characterization Of Agnpsmentioning

confidence: 99%

“…A test tube containing the test sample was exposed to sunlight and after each minute temperature of the sample was recorded by dipping the temperature probe (Fisher Scientific). This procedure was continued for 15 min and a plot was drawn between time and temperature changed [24].…”

Section: Photothermal Activity Measurement Of Agnpsmentioning

confidence: 99%

“…Photo-thermal activity measurement reported no change in temperature and the temperature of the AgNPs remained constant even after 15 min of exposure to sunlight which expressed that they cannot be used as photodynamic agents to treat cancer cells ( figure 6). The previous researcher reported [4,24,31] the photothermal abilities of O 2 -doped nanoparticles e.g. Zn oxide, Fe oxide, and Cu oxide nanoparticles.…”

Section: Photo-thermal Activity Of Agnpsmentioning

confidence: 99%

See 1 more Smart Citation

One-pot phytosynthesis of nano-silver from Mentha longifolia L.: their characterization and evaluation of photodynamic potential

Javed

Nadhman

Razzaq

et al. 2020

Mater. Res. Express

Self Cite

View full text Add to dashboard Cite

The present study deals with the ecofriendly one-pot synthesis and stabilization of silver nanoparticles (AgNPs) by using aqueous extract of Mentha longifolia branches. Spectrophotometric analysis of different ratios of reactants revealed that a 1 to 9 ratio of plant extract and silver salt solution respectively is the most suitable proportion for synthesis. Synthesis of AgNPs was confirmed initially by the observation of change in the color of the reaction mixture which was carried out at 60°C by using 3 mM of silver salt and the pH of the reaction medium was maintained at 5.22. A characteristic surface plasmon resonance (SPR) band was observed at 495 nm of light wavelength. SEM images revealed that the nanoparticles are in ∼20-80 nm and are anisotropic and nearly spherical while EDX analysis showed the presence of elemental Ag with ∼90% signal intensity. Size distribution analysis of AgNPs was performed by dynamic light scattering technique and AgNPs were found in the range of ∼8-30 nm. ROS quantification revealed that the AgNPs have a quantum yield of 0.09 Φ which provides them the ability to proteolytically treat cancer and other microbial pathogenic cells. AgNPs did not report any photothermal activity to be used as photodynamic agents. These findings explain the redox potential of M. longifolia to bio-fabricate AgNPs and their abilities to generate ROS may help to curb dreading diseases.

show abstract

Photo-inactivation and efflux pump inhibition of methicillin resistant Staphylococcus aureus using thiolated cobalt doped ZnO nanoparticles

Cited by 40 publications

References 36 publications

Antibacterial potential of Ni-doped zinc oxide nanostructure: comparatively more effective against Gram-negative bacteria including multi-drug resistant strains

Antibacterial potential of Ni-doped zinc oxide nanostructure: comparatively more effective against Gram-negative bacteria including multi-drug resistant strains

Photothermally active nanoparticles as a promising tool for eliminating bacteria and biofilms

One-pot phytosynthesis of nano-silver from Mentha longifolia L.: their characterization and evaluation of photodynamic potential

Contact Info

Product

Resources

About