Nyctanthes arbor-tristis mediated silver sulphide nano particles: Synthesis, characterization and anti-inflammatory activities

Litsea quinqueflora (Dennst.) Suresh is an ethno botanically important medicinal plant used by the traditional healers of Kerala to heal inflammatory disorders. In this paper we describe the synthesis of bio-nanoparticles of silver, capped with the methanolic leaf extract L. quinqueflora; its characterization and anti-bacterial and anti-inflammatory activities. The production of silver nanoparticles was recognized by the colour change of the solution from yellow to dark brown; it was further confirmed and characterized by UV-Vis spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy, X-ray Diffraction (XRD) studies, Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Analysis (EDAX). The Surface Plasmon Resonance (SPR) peak obtained at 421 nm from the UV spectrum confirms the formation of AgNPs. The capping of nanoparticles with phytochemicals was assessed from the FTIR spectrum. Also, XRD, SEM and EDAX analysis showed that the nanoparticles are crystalline in nature with an average size of 62.63 nm. The AgNPs thus synthesized exhibited anti-bacterial activity against Pseudomonas fluorescens, Staphylococcus warneri, Klebsiella pneumoniae, Bacillus cereus and Escherichia coli. The anti inflammatory activity of the nanoparticles was tested by inhibition of protein denaturation assay; this gave positive results with the IC 50 value of 244.92 μg/ml.

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Protective and anti-inflammatory effect of selenium nano-particles against bleomycin-induced pulmonary injury in male rats

Drug and Chemical Toxicology ◽

10.1080/01480545.2018.1560466 ◽

2019 ◽

Vol 44 (1) ◽

pp. 92-100 ◽

Cited By ~ 2

Author(s):

Rana Shahabi ◽

Ali Anissian ◽

Seyed Ali Javadmoosavi ◽

Farinaz Nasirinezhad

Keyword(s):

Nano Particles ◽

Male Rats ◽

Pulmonary Injury ◽

Anti Inflammatory ◽

Inflammatory Effect

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Silver sulphide nano-particles enhanced photo-current in polymer solar cells

Applied Physics A ◽

10.1007/s00339-020-3389-8 ◽

2020 ◽

Vol 126 (3) ◽

Cited By ~ 3

Author(s):

Mohammed S. G. Hamed ◽

Michael A. Adedeji ◽

Yong Zhang ◽

Genene Tessema Mola

Keyword(s):

Solar Cells ◽

Polymer Solar Cells ◽

Nano Particles ◽

Silver Sulphide ◽

Photo Current

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Antiglycation and Fatty Acids Profiling in Response to Phyocyanin Extracted from Chlorophyta Ulva lactuca Algae Loaded on Albumin Nano-particles (ULANP) in Diabetic Rats

Journal of Pharmaceutical Research International ◽

10.9734/jpri/2019/v26i430144 ◽

2019 ◽

pp. 1-7

Author(s):

Abdulrahman L. Al-Malki ◽

Elie K. Barbour ◽

Khadijah S. Balamash ◽

Fawzia A. Alshubaily ◽

Khalid O. Abualnaja ◽

...

Keyword(s):

Fatty Acids ◽

Unsaturated Fatty Acids ◽

Saturated Fatty Acids ◽

Diabetic Rats ◽

Ulva Lactuca ◽

Nano Particles ◽

Albino Rats ◽

Fatty Acids Profile ◽

Spectral Bands ◽

Anti Inflammatory

Aim: This study evaluated the effect of Phyocyanin extracted from Chlorophyta Ulva lactuca algae loaded on albumin nano-particles (ULANP) on diabetic rats. Materials and Methods: Fifty albino rats were divided into 5 goups. GPI: control and GPII: rats were injected with alloxan (75 mg /kg) i.p for six consecutive days for induction of diabetes. This group was subdivided into 4 subgroups: GP IIa: (Untreated diabetic): GP IIb: rats were given with ULANP (100 mg/kg).GP IIc: Rats were given ULANP (200 mg/kg) i.p. GP IId: Rats were given insulin (100 unit/ day). Serum NO, interleukin-6 glucose, AGEs and fatty acids profile was determined. Results: Analysis of ULANP by FTIR showed the characteristic band (2100 cm-1~ 3700 cm-1) that is indicated mainly from -COO, – CO and conjugated double bond. These bonds showed spectral bands peak 2985 cm-1 and 2860 cm-1, 2986 cm-1. Administration of ULANP in diabetic rats exerted an anti-inflammatory by lowering NO and IL-6 levels and hypoglycemic effects by decreased glucose and reduced AGEs levels. In addition, ULAPN lowered percent of saturated fatty acids while elevated unsaturated fatty acids percent. Conclusion: It was concluded that, ULAPN is a promising effective anti-inflammatory and hypoglycemic agent compared with other therapeutic agents with lower site effects.

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Construction of Nano-Carriers Coated with Platelet Membrane and Its Application in Targeted Therapy of Inflammation

NANO ◽

10.1142/s1793292021501289 ◽

2021 ◽

pp. 2150128

Author(s):

Dandan Ren ◽

Tianyu Xiao ◽

Jiadong Lou ◽

Rong Ren ◽

Yuhan Ye ◽

...

Keyword(s):

Flow Cytometry ◽

Particle Size ◽

Glycolic Acid ◽

Surface Protein ◽

Plga Nanoparticles ◽

Platelet Membrane ◽

Nano Particles ◽

Poly Lactic Acid ◽

Anti Inflammatory ◽

Inflammatory Effect

In this study, poly (lactic acid-glycolic acid) (PLGA) nanoparticles loaded with anti-inflammatory drug ketoprofen (KET) were prepared and then coated with platelet membrane (PLTM) to form KET@PLTM-PLGA nano-particles (NPs). The particle size of the KET@PLTM-PLGA NPs is 176[Formula: see text]nm and the surface protein is the same as that of PLTM. The results of confocal microscopy and flow cytometry showed that the KET@PLTM-PLGA NPs uptake of RAW264.7 induced by LPS was significantly higher than that of KET@PLGA NPs, without PLTM, which was due to the binding of P-selectin to CD44 receptors on the surface of RAW264.7 cells induced by LPS on the surface of PLTM. Compared with other KET preparations, KET@PLTM-PLGA NPs have better anti-inflammatory effect.

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Electron holography of catalysts

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100138452 ◽

1995 ◽

Vol 53 ◽

pp. 416-417

Author(s):

A. K. Datye ◽

D. S. Kalakkad ◽

L. F. Allard ◽

E. Völkl

Keyword(s):

Heterogeneous Catalysts ◽

High Surface ◽

High Surface Area ◽

Atomic Scale ◽

Nano Particles ◽

Phase Image ◽

Electron Holography ◽

Specimen Thickness ◽

Phase Information ◽

Particle Structure

The active phase in heterogeneous catalysts consists of nanometer-sized metal or oxide particles dispersed within the tortuous pore structure of a high surface area matrix. Such catalysts are extensively used for controlling emissions from automobile exhausts or in industrial processes such as the refining of crude oil to produce gasoline. The morphology of these nano-particles is of great interest to catalytic chemists since it affects the activity and selectivity for a class of reactions known as structure-sensitive reactions. In this paper, we describe some of the challenges in the study of heterogeneous catalysts, and provide examples of how electron holography can help in extracting details of particle structure and morphology on an atomic scale.Conventional high-resolution TEM imaging methods permit the image intensity to be recorded, but the phase information in the complex image wave is lost. However, it is the phase information which is sensitive at the atomic scale to changes in specimen thickness and composition, and thus analysis of the phase image can yield important information on morphological details at the nanometer level.

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Coherent electron nanodiffraction from clean silver nano particles in a UHV STEM

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010015112x ◽

1993 ◽

Vol 51 ◽

pp. 1058-1059

Author(s):

J. Liu ◽

M. Pan ◽

G. E. Spinnler

Keyword(s):

Supported Catalysts ◽

Imaging Techniques ◽

Nano Particles ◽

Metal Particles ◽

Shape Structure ◽

Dynamical Simulations ◽

Small Metal Particles ◽

Extract Information

Small metal particles have peculiar chemical and physical properties as compared to bulk materials. They are especially important in catalysis since metal particles are common constituents of supported catalysts. The structural characterization of small particles is of primary importance for the understanding of structure-catalytic activity relationships. The shape and size of metal particles larger than approximately 5 nm in diameter can be determined by several imaging techniques. It is difficult, however, to deduce the shape of smaller metal particles. Coherent electron nanodiffraction (CEND) patterns from nano particles contain information about the particle size, shape, structure and defects etc. As part of an on-going program of STEM characterization of supported catalysts we report some preliminary results of CEND study of Ag nano particles, deposited in situ in a UHV STEM instrument, and compare the experimental results with full dynamical simulations in order to extract information about the shape of Ag nano particles.

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