Antibiotic efficacy patterns in the critically ill

Rajendran, Ramesh; Murugan, Raghavan; Gagarin, P. Yuri; Joena, M Virgin; Deneshkumar, V; Arun, M

doi:10.18203/2320-6012.ijrms20162800

Cited by 6 publications

(7 citation statements)

References 4 publications

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“…Silver nanoparticles were synthesised from Salvia leucantha that revealed considerable antibacterial activity [17]. Salvia o cinalis is well known of Salvia genus.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Silver Nanoparticles from Salvia aethiopis L. and Their Antioxidant Activity

Geçer

2021

J Inorg Organomet Polym

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Salvia aethiopis L. was heated in distilled water for 2 hours. After ltration, water extract was treated with silver nitrate for 2 hours at 60°C to yield the silver nanoparticles (Sa-AgNPs). The structure of silver nanoparticles was elucidated by spectroscopic methods such as Ultraviolet-visible (UV-Vis), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and Scanning electron microscope (SEM). The maximum absorption in UV-Vis spectrum was observed at 508 nm. XRD pattern at (2θ) 38.1°, 44.3°, 64.4°, and 77.4° degrees can be assigned to the (111), ( 200), ( 220) and (311) Bragg's re ections of the face-centered cubic crystalline structure. The average size of Sa-AgNPs was found as 74.09 nm by SEM analysis. The characteristic hydroxyl vibration signal appeared at 3222 cm − 1 . Antioxidant activity of extract and Sa-AgNPs were carried out using DPPH • , ABTS •+ FRAP assay. The Sa-AgNPs revealed the considerable ABTS •+ scavenging effect with the value of 4.93 (IC 50 , µg/mL) compared to BHT (IC 50 , µg/mL, 8.34). However, Sa-AgNPs displayed the lower DPPH • activity (IC 50 , µg/mL, 24.37) than that of the standard BHT (IC 50 , µg/mL, 9.67). The reducing power activity of Sa-AgNPs was found as 4.52 (µmol TE/mg extract) while the standard BHT value was 488 (µmol TE/mg extract).

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“…Silver nanoparticles were synthesised from Salvia leucantha that revealed considerable antibacterial activity [17]. Salvia o cinalis is well known of Salvia genus.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Silver Nanoparticles from Salvia aethiopis L. and Their Antioxidant Activity

Geçer

2021

J Inorg Organomet Polym

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“…In this method, the synthesis is carried out without any dangerous chemicals, and also wasteful purifications . There are many reports in literature on the synthesis of silver nanoparticles using plant extracts such as Pogostemon benghalensis leaf extract, ascarob leaf extract, Salvia splendens extract, leaf extract of Wattakaka volublis , Saliva officinalis , Ocimum tenuiflorum , Solanum trilobatum , Syzygium cumini , Centella asiatica , Citrus sinensis, and Mimusops elengi . The uses of the microorganisms to the green synthesis of silver nanoparticles also reported.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of silver nanoparticles using water extract of Salvia leriifolia: Antibacterial studies and applications as catalysts in the electrochemical detection of nitrite

Baghayeri

Mahdavi

Abadi

et al. 2017

Applied Organom Chemis

147

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Here, a green method is described for the biosynthesis of Ag nanoparticles (Ag NPs) using aqueous extracts of the leaf of Salvia leriifolia as reducing and stabilizing agent. Various techniques such as scanning electron microscopy (SEM), atomic force microscopy (AFM), transmission electron microscopy (TEM) and X‐ray diffraction (XRD) were employed for the characterization of the structure and morphology of bio‐synthesized AgNPs. The results reveal that AgNPs synthesized with uniform spherical morphology and average diameters of 27 nm. The AgNPs as a green and efficient heterogeneous catalyst presented superior antibacterial activity. Direct electrochemistry studies of the synthesized AgNPs confirmed that nanoparticles retained their direct electrochemical activity. This is mainly attributed to the proper biosynthesis process, the large specific surface area and the good conductivity of the synthesized nanoparticles. Hence, the present synthesized AgNPs displayed good electrocatalytic activity to the reduction of nitrite ions. The proposed method is highly recommended as a novel platform for the development of electrochemical sensors which can further expand the applications of AgNPs. Antibacterial activity of the synthesized AgNPs was evaluated against nine microorganisms. AgNPs prevented the growth of all selected bacteria. The nanoparticles inhibited the growth of Pseudomonas aeruginosa, Klebsiella pneumonia, Staphylococcus coagulase, Acinetobacter baumannii, and Streptococcus pneumonia more than antibiotic of vancomycin, however, the ability of AgNPs against Echerishia coli and Serratia marcescens was less than the antibiotic. On the other hand AgNPs were active against Citrobacter frurdii, while the antibiotic was inactive.

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“…Blends of poly (ethyl methacrylate) (PEMA) with cellulose acetate butyrate (CAB) were previously prepared in THF via solution method, using different loadings of CAB (30%, 50%, and 70%) . These blends were characterized by FTIR, DSC, and TGA analysis.…”

Section: Methodsmentioning

confidence: 99%

Morphology and Thermal Properties of Nano‐Blends Based on Cellulose Acetate Butyrate, Poly (ethyl methacrylate) and An Organically Modified Algerian Bentonite

Kadi

Ouaad

Djadoun

et al. 2019

Macromolecular Symposia

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Poly (ethyl methacrylate)/Cellulose acetate butyrate/organically modified Algerian Bentonite nano‐blends (PEMA/CAB/OMMT) are prepared via solution intercalation method. Transmission electron microscopy (TEM) investigations reveal that depending on the OMMT loading, intercalated and exfoliated silicate layers nano‐blends were obtained. These nano‐blends exhibit an overall improved thermal stability compared to the pure (PEMA/CAB) blend as evidenced by thermogravimetric analysis (TGA).

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Antibiotic efficacy patterns in the critically ill

Cited by 6 publications

References 4 publications

Green Synthesis of Silver Nanoparticles from Salvia aethiopis L. and Their Antioxidant Activity

Green Synthesis of Silver Nanoparticles from Salvia aethiopis L. and Their Antioxidant Activity

Green synthesis of silver nanoparticles using water extract of Salvia leriifolia: Antibacterial studies and applications as catalysts in the electrochemical detection of nitrite

Morphology and Thermal Properties of Nano‐Blends Based on Cellulose Acetate Butyrate, Poly (ethyl methacrylate) and An Organically Modified Algerian Bentonite

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