Effective inhibition and eradication of pathogenic biofilms by titanium dioxide nanoparticles synthesized using Carum copticum extract

Most bacteria exist in nature in the form of biofilms. One of the key survival strategies by bacteria to withstand chemical and physical stresses is by forming biofilms on biotic and abiotic surfaces. A different set of genes are expressed in biofilms compared to the planktonic mode of bacterial gro...

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Bibliographic Details
Published in:RSC advances 2021-05, Vol.11 (31), p.19248-19257
Main Authors: Altaf, Mohammad, Zeyad, Mohammad Tarique, Hashmi, Md Amiruddin, Manoharadas, Salim, Hussain, Shaik Althaf, Ali Abuhasil, Mohammed Saeed, Almuzaini, Mohammed Abdulaziz M
Format: Article
Language:English
Subjects:
Bacteria
Biofilms
Chemical synthesis
Chemistry
Disease control
E coli
Nanoparticles
Nosocomial infections
Titanium
Titanium dioxide
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Summary:Most bacteria exist in nature in the form of biofilms. One of the key survival strategies by bacteria to withstand chemical and physical stresses is by forming biofilms on biotic and abiotic surfaces. A different set of genes are expressed in biofilms compared to the planktonic mode of bacterial growth. According to data from the National Institutes of Health (NIH) and Centers for Disease Control and Prevention (CDC), nearly 80 percent of all human infections are encouraged by biofilms and roughly 65 percent of all hospital-acquired infections are associated with biofilms. Hence, considering the role of biofilms in clinical settings, there is an urgent need for the discovery/development of novel antibiofilm agents. In this study, we have tested the effect of freshly prepared titanium dioxide nanoparticles (TiO -NPs) synthesized using extract on biofilms, both against Gram +ve and Gram -ve bacteria. Being environment friendly in nature, the green route of nanoparticle synthesis is believed to be advantageous over chemical synthesis of metal nanoparticles. The synthesized nanoparticles were found to be predominantly spherical or spheroidal in shape with an average size of 12.01 ± 5.58 nm. As evident from data, more than 70% inhibition of biofilms of test bacteria was achieved in the presence of TiO -NPs. Electron microscopic analysis revealed that the adherence and colonization of bacteria on the glass surface were remarkably reduced by the treatment of TiO -NPs. The EPS secretion of ATCC 25922 and PAO1 were inhibited by 62.08 and 74.94%, respectively. The EPS secretion of MTCC 3160 was least inhibited (
ISSN:2046-2069
2046-2069
DOI:10.1039/d1ra02876f