Antibacterial potential of silver nanoparticles against isolated urinary tract infectious bacterial pathogens

Inbaneson, Samuel Jacob; Sundaram, Ramalingam; Manikandan, N.

doi:10.1007/s13204-011-0031-2

Cited by 45 publications

(21 citation statements)

References 48 publications

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“…The most frequently isolated bacteria significantly (p<0.05) were Escherichia coli 96 (45.2%) followed by, Klebsiella pneumoniae 48 (22.6%), Staphylococcus aureus 43(20.3%), Pseudomonas aeruginosa 14 (6.6%) and Staphylococcus epidermidis 11 (5.2%). This result was in agreement with Inbaneson et al (2011).…”

Section: Resultssupporting

confidence: 93%

Biosynthesis of Zinc Oxide Nanoparticles and Assay of Antibacterial Activity

Ibrahem¹,

Thalij

Saleh

et al. 2017

American Journal of Biochemistry and Biotechnology

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In this study Out of 280 urinary tract infections samples, 212(75.7%) bacterial isolates were recovered. Based on, morphological, cultural and biochemical testes, further, confirmed the results by VITEK 2 System there were 54 (30.2%) of gram positive whereas the 158 (69.8%) of gram negative. The bacterial isolates were distributed as Escherichia coli followed by Klebsiella pneumoniae, Staphylococcus aureus, Pseudomonas aeruginosa and Staphylococcus epidermidis which represented 96(45.2%), 48 (22.6%), 43(20.3%), 14 (6.6%) and 11 (5.2%) respectively. The synthesis of Zinc Oxide nanoparticles (ZnO NPs) using biological methods as eco-friendly from the use of Aspergillus niger filtrate in the extracellular synthesis, then identified and characterized by UV-Vis Spectrophotometer and Scanning Electron Microscopy (SEM). Furthermore, determine the antibacterial efficacy of biological synthesized ZnO NPs against isolated pathogens microbes Staphylococcus aureus and Escherichia coli. The results found the used of 100 mL of ZnCL2 in cultivation of Aspergillus niger was obtained and biosynthesis of ZnO NPs at 46 mg. SEM was illustrate the morphology and practices of ZnO NPs sizes and appear as spherical in shape besides, the size range at 41-75 nm. The assurance by the UV-Vis spectrum appears the absorption bands of ZnO NPs at 380 nm. The results of 1.0 and 1.5 mg mL −1 from ZnO NPs synthesized from A. niger were effect of inhibition against S. aureus and E. coli bacterial isolated from urine tracts infection sources. The Inhibition Zone Diameters (IZD) against S. aureus was appear at 24 and 26 mm respectively compared with the IZD from Ciprofloxacin alone at 20 mm. while the same concentration from ZnO NPs against E. coli causing in IZD at 25 and 28 mm respectively compared with Ciprofloxacin inhibition alone at 23 mm.

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Section: Resultssupporting

confidence: 93%

Biosynthesis of Zinc Oxide Nanoparticles and Assay of Antibacterial Activity

Ibrahem¹,

Thalij

Saleh

et al. 2017

American Journal of Biochemistry and Biotechnology

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“…All previous reports agree with our results as AgNPs showed good antibacterial activity against MDR isolates. In another finding, E. coli isolates showed no response to AgNPs indicated by absence of inhibition zone which is in a disagreement with results obtained in our study (Inbaneson et al, 2011). Our study shows that 11 isolates were positive for OmpC and OmpF genes as it confirms the presence of porin channels among 11 AgNPs-sensitive tested E. coli isolates.…”

Section: Isolate No Resistance Patterncontrasting

confidence: 91%

Molecular characterization of silver resistant E. coli strains isolated from patients suffering from diarrhea

Mohamed¹,

Ahmed²,

El-Baky³

2019

Afr. J. Microbiol. Res.

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Silver nanoparticles (AgNPs) are considered a good alternative for antibiotics due to emerging Multidrug Resistance (MDR) crisis. Resistance to AgNPs is approximately limited among Gram-positive and Gram-negative pathogens. Low toxicity to human cells permits its safe use as a new antimicrobial with broad spectrum. Bacterial cells are used as a factory for AgNPs synthesis supplying a powerful antimicrobial with eco-friendly way. In this study, MDR Escherichia coli strains were recovered from patients attending Minia University hospital. Biogenic synthesis of AgNPs was performed using E. coli cells. Transmission Electron Microscopy (TEM) was used to characterize AgNPs size and shape. Antibacterial activity of AgNPs was tested against the MDR E. coli isolates. Screening for Sil and Omp genes was done using polymerase chain reaction (PCR). A total of 13 MDR E. coli bacterial culture supernatant isolates were recovered from patients under study. Biosynthesis of AgNPs was observed after addition of supernatant to AgNO 3 by color change from yellow to brown. TEM characterization indicated the presence of silver nanoparticles with 15-75 nm particle size range. Eleven of MDR E. coli isolates were sensitive to biogenic AgNPs under study. SilB and SilE genes were encoded by the two AgNPs-resistant E. coli isolates which were negative for OmpF and OmpC genes, respectively demonstrating the role of Sil efflux pump genes and porin deficiency in AgNPs resistance. As indicated, the emergence of silver resistance due to the wide spread of biocides including silver has become a great challenge for the treatment of different infections.

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“…Silver nanoparticles are well known as an antimicrobial agent against wide range of microorganisms (Ansari et al 2014;Inbaneson et al 2011;Augustine and Rajarathinam 2012). Biosynthesis of silver nanoparticles using plant resources is an eco-friendly, reliable approach and is suitable for large-scale production of nanoparticles (Vanaja and Annadurai 2013;Selvam and Sivakumar 2014).…”

Section: Introductionmentioning

confidence: 99%

Electrospun PCL membranes incorporated with biosynthesized silver nanoparticles as antibacterial wound dressings

2015

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An open wound is highly prone to bacterial colonization and infection. Bacterial barrier property is an important factor that determines the success of a wound coverage material. Apart from the bacterial barrier property, presence of antibacterial agents can successfully eliminate the invasion and colonization of pathogen in the wound. Silver nanoparticles are well-known antimicrobial agents against a wide range of microorganisms. Biosynthesized silver nanoparticles are more acceptable for medical applications due to superior biocompatibility than chemically synthesized ones. Presence of biomolecules on biosynthesized silver nanoparticles enhances its therapeutic efficiency. Polycaprolactone (PCL) is a well-known material for biomedical applications including wound dressings. Electrospinning is an excellent technique for the fabrication of thin membranes for wound coverage applications with barrier property against microbes. In this paper, we report the fabrication and characterization of electrospun PCL membranes incorporated with biosynthesized silver nanoparticles for wound dressing applications.

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Antibacterial potential of silver nanoparticles against isolated urinary tract infectious bacterial pathogens

Cited by 45 publications

References 48 publications

Biosynthesis of Zinc Oxide Nanoparticles and Assay of Antibacterial Activity

Biosynthesis of Zinc Oxide Nanoparticles and Assay of Antibacterial Activity

Molecular characterization of silver resistant E. coli strains isolated from patients suffering from diarrhea

Electrospun PCL membranes incorporated with biosynthesized silver nanoparticles as antibacterial wound dressings

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