Novel biosynthesis of tellurium nanoparticles and investigation of their activity against common pathogenic bacteria

Abed, Nermine N.; Helal, Eman El-Husseiny; Yosri, Mohammed

doi:10.1016/j.jtumed.2022.10.006

Cited by 5 publications

(8 citation statements)

References 56 publications

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“…Biocompatible Te nano-needles have been used for accelerated wound healing with a long-term stable antibacterial activity [ 124 ]. Many applications of nano-tellurium have been reported, as mentioned previously in this review, in the field of nano-medicine [ 11 , 13 , 74 , 125 ].…”

Section: Toxicity Of Tellurium and Nano-telluriummentioning

confidence: 99%

“…Tellurium can substitute for sulfur in common sulfide minerals like chalcopyrite, galena, covellite, pyrrhotite, pyrite, and sphalerite [ 10 ]. Nano-tellurium has promising applications, including antimicrobial [ 11 , 12 ], electronic, and optoelectronic [ 13 ] uses. Nano-tellurium (nano-Te) can be found in many forms such as nano-Te structures [ 13 ], nano-Te wires [ 14 ], nano-Te tubes [ 15 ], and nano-Te ribbons [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

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Tellurium and Nano-Tellurium: Medicine or Poison?

Sári,

Ferroudj,

Semsey

et al. 2024

Nanomaterials

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Tellurium (Te) is the heaviest stable chalcogen and is a rare element in Earth’s crust (one to five ppb). It was discovered in gold ore from mines in Kleinschlatten near the present-day city of Zlatna, Romania. Industrial and other applications of Te focus on its inorganic forms. Tellurium can be toxic to animals and humans at low doses. Chronic tellurium poisoning endangers the kidney, liver, and nervous system. However, Te can be effective against bacteria and is able to destroy cancer cells. Tellurium can also be used to develop redox modulators and enzyme inhibitors. Soluble salts that contain Te had a role as therapeutic and antimicrobial agents before the advent of antibiotics. The pharmaceutical use of Te is not widespread due to the narrow margin between beneficial and toxic doses, but there are differences between the measure of toxicity based on the Te form. Nano-tellurium (Te-NPs) has several applications: it can act as an adsorptive agent to remove pollutants, and it can be used in antibacterial coating, photo-catalysis for the degradation of dyes, and conductive electronic materials. Nano-sized Te particles are the most promising and can be produced in both chemical and biological ways. Safety assessments are essential to determine the potential risks and benefits of using Te compounds in various applications. Future challenges and directions in developing nano-materials, nano-alloys, and nano-structures based on Te are still open to debate.

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Section: Toxicity Of Tellurium and Nano-telluriummentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tellurium and Nano-Tellurium: Medicine or Poison?

Sári,

Ferroudj,

Semsey

et al. 2024

Nanomaterials

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“…NT-1 Intracellular Te(IV) Spheres Unknown (Sakaguchi et al 2019 ) Shinella sp. WSJ-2 Intracellular Te(IV) Rod-shaped 50–120 (Wu et al 2019 ) Streptomyces cyaneus Extracellular Te(IV) Spherical TeO 2 Nps 35–89 (El-Sayyad et al 2020 ) Streptomyces graminisoli Unknown Te(IV) Rods, rosette 21.4 (Abed et al 2023 ) …”

Section: History and Application Of Telluriummentioning

confidence: 99%

“…Toxicity of Bio-TeNPs, while less than that of soluble Te oxyanions, is still significant and the Bio-TeNPs are able to destroy biofilms, produce reactive oxygen species, damage DNA and release toxic ions in specific contexts (Ghosh et al 2021 ). Thus, Bio-TeNPs were found to inhibit the growth of E. coli (Pugin et al 2014 ), Staphylococcus aureus (Abed et al 2023 ), K . pneumoniae , Pseudomonas aeruginosa (Zare et al 2012 ), Candida albicans (Zare et al 2014 ), Aspergillus flavus and Aspergillus niger (El-Sayyad et al 2020 ).…”

Section: History and Application Of Telluriummentioning

confidence: 99%

Microbial mechanisms to transform the super-trace element tellurium: a systematic review and discussion of nanoparticulate phases

Wei

Guo

et al. 2023

World J Microbiol Biotechnol

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Tellurium is a super-trace metalloid on Earth. Owing to its excellent physical and chemical properties, it is used in industries such as metallurgy and manufacturing, particularly of semiconductors and – more recently – solar panels. As the global demand for tellurium rises, environmental issues surrounding tellurium have recently aroused concern due to its high toxicity. The amount of tellurium released to the environment is increasing, and microorganisms play an important role in the biogeochemical cycling of environmental tellurium. This review focuses on novel developments on tellurium transformations driven by microbes and includes the following sections: (1) history and applications of tellurium; (2) toxicity of tellurium; (3) microbial detoxification mechanisms against soluble tellurium anions including uptake, efflux and methods of reduction, and reduced ability to cope with oxidation stress or repair damaged DNA; and (4) the characteristics and applications of tellurium nanoparticles (TeNPs) produced by microbes. This review raises the awareness of microorganisms in tellurium biogeochemical cycling and the growing applications for microbial tellurium nanoparticles.

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“…Briefly, clinical samples from patients admitted to Al-Zahraa University Hospital and Cairo Specialized Hospital in Cairo city were used to isolate bacterial strains. The samples were cultivated on appropriate agar media, and VITEK 2 was used to identify the bacterial isolates (Biomerieux, New Delhi, India) [18].…”

Section: Isolation and Detection Of Harmfulmentioning

confidence: 99%

In Vitro Antibacterial and Phytochemical Screening of Hypericum perforatum Extract as Potential Antimicrobial Agents against Multi‐Drug‐Resistant (MDR) Strains of Clinical Origin

Sherif

Elshikh

Abdel‐Aziz

et al. 2023

BioMed Research International

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Background. The perennial plant Hypericum perforatum is widely distributed around the world. It has been used for many years in conventional medicine to treat a variety of illnesses, including stress, mild to moderate depression, and minor injuries. This study examined the antimicrobial activity of the H. perforatum total extract and its fractions (n-hexane, ethyl acetate, chloroform, and aqueous) against multi-drug-resistant (MDR) isolates that were gathered from clinical samples, including methicillin-resistant Staphylococcus aureus (MRSA), Enterococcus faecalis, Escherichia coli, and Klebsiella pneumonia. Materials and Methods. Aerial parts of H. perforatum were collected and extracted using various solvents and were tested versus different isolated bacterial species. The inhibition zone of tested extracts was detected using an agar diffusion assay, and MICs were measured. Phytochemical analysis of promising H. perforatum extract was done using LC-ESI-MS/MS. Ultrastructure examination for the most altered bacteria used transmission electron microscopy. Antioxidant assays were done using DPPH and ABTS scavenging capacity methods. Cytotoxicity was reported versus Vero cells. Results. Different extracts of H. perforatum showed promising antibacterial activity against the pathogens. While the subfractions of the total extract were observed to show lesser inhibition zones and higher MIC values than the total extract of H. perforatum against MDR strains, the total extract of H. perforatum demonstrated the most potent antimicrobial action with an inhibition zone range of 17.9-27.9 mm. MDR-K. pneumoniae was discovered to be the most susceptible strain, which is consistent with the antibacterial inhibitory action of H. perforatum whole extract. Additionally, after treatment at the minimum inhibitory concentration (MIC 3.9 μg/ml), the transmission electron microscope showed alterations in the ultrastructure of the K. pneumoniae cells. Methanol extract from H. perforatum has a CC50 value of 976.75 μg/ml. Conclusion. Future inhibitors that target MDR strains may be revealed by these findings. Additionally, the extracts that were put to the test demonstrated strong antioxidant effects as shown by DPPH or ABTS radical-scavenging assays.

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Novel biosynthesis of tellurium nanoparticles and investigation of their activity against common pathogenic bacteria

Cited by 5 publications

References 56 publications

Tellurium and Nano-Tellurium: Medicine or Poison?

Tellurium and Nano-Tellurium: Medicine or Poison?

Microbial mechanisms to transform the super-trace element tellurium: a systematic review and discussion of nanoparticulate phases

In Vitro Antibacterial and Phytochemical Screening of Hypericum perforatum Extract as Potential Antimicrobial Agents against Multi‐Drug‐Resistant (MDR) Strains of Clinical Origin

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