Biogenic synthesis, characterization and biological activity of lanthanum nanoparticles

In this study, biogenic lanthanum (La) nanoparticles were synthesized through ecofriendly green chemistry methodology. Mutingia calabura leaf extract was used for the synthesis of La nanoparticles. The synthesized La nanoparticles were characterized using FTIR, SEM and EDAX. Further, the nanoparticles were analysed for antibacterial activity, bacterial toxicity, antioxidant activity, blood compatibility and dye degradation efficiency. Well diffusion technique was used to study the antibacterial activity and antioxidant activity was evaluated using DPPH assay. Photocatalytic dye degradation study was carried out with Coomasie brilliant blue dye. Peaks obtained in the FTIR analysis of the plant sample confirmed the presence of the carbonyl, hydroxyl and amine group which was responsible in bioreduction for La nanoparticles synthesis. Size of La nanoparticles was less than that of 100 nm as observed in SEM. EDAX analysis confirmed the presence of lanthanum in the synthesized La nanoparticles. DPPH assay results showed that La nanoparticles providing 70.06% inhibition percentage. Mutingia calabura leaf extract based La Nanoparticles showed good bactericidal activity against Klebsiella pneumonia, Proteus mirabilis, Staphylococcus aureus and E. coli Sps. Blood compatibility study showed involvement of La nanoparticles in blood coagulation mechanism and thrombolytic activity. Furthermore, La nanoparticles were effective in Coomassie brilliant blue dye degradation beneath the sunli...
Source: Materials Today: Proceedings - Category: Materials Science Source Type: research

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Publication date: Available online 14 September 2019Source: Journal of Cardiology CasesAuthor(s): Toshio Kimura, Yoshiharu Nishibori, Kojiro Miki, Katsunao Tanaka, Koichi Fujita, Masanori Takada, Takao Maruyama, Masaharu IshiharaAbstractEndovascular therapy (EVT) has been accepted as a minimally invasive treatment for peripheral artery disease, and its applicability has been widened with the development of techniques and devices. A long, totally occluded lesion in the superficial femoral artery (SFA) is one of the most challenging lesions for EVT due to technical difficulties in wire-crossing. Recently, intentional subinti...
Source: Journal of Cardiology Cases - Category: Cardiology Source Type: research
Abstract The development of a method for multi-phase detection of antioxidants using surface-enhanced Raman spectroscopy (SERS) with a gold nanoparticle (AuNP)-coated fiber as a substrate is described. The AuNP-coated fiber was directly inserted into a multi-phase system containing model analytes of ascorbic acid, ascorbyl palmitate, and α-tocopherol, representing hydrophilic, amphiphilic, and lipophilic antioxidants, respectively. The AuNP-coated fiber enabled simultaneous detection of antioxidants present within the aqueous, interfacial, and organic phases of the multi-phase system. An oil-in-water emulsio...
Source: Talanta - Category: Chemistry Authors: Tags: Talanta Source Type: research
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Source: Talanta - Category: Chemistry Authors: Tags: Talanta Source Type: research
Abstract The possibility of achieving bacterial discrimination using a miniaturized aspiration ion mobility spectrometer model ChemPro-100i (Environics Oy) has been tested by interrogating the headspace air samples above in vitro bacterial cultures of three species - Escherichia coli, Bacillus subtilis and Staphylococcus aureus, respectively. The ChemPro-100i highly integrated seven sensor array, composed of one a-IMS cell, three MOS (metal oxide sensors), one FET (field effect transistor) sensor and two SC (semiconductor) sensors, provided enough analytical information to discriminate between the three bacterial ...
Source: Talanta - Category: Chemistry Authors: Tags: Talanta Source Type: research
Authors: Rodriguez AE, Restrepo MI Abstract INTRODUCTION: Aspiration pneumonia is a subclass of community-acquired pneumonia that is expected to have an increasing contribution in mortality and morbidity, particularly in the elderly population over the next coming decades. While studies have revealed significant progress in identifying risk factors for aspiration pneumonia, the clinical presentation and diagnosis remains challenging to healthcare providers. Areas Covered: We conducted a broad literature review using the MeSH heading in PubMed/MEDLINE of "aspiration pneumonia" from January 1970 to July 201...
Source: Expert Review of Clinical Pharmacology - Category: Drugs & Pharmacology Tags: Expert Rev Clin Pharmacol Source Type: research
Abstract The possible impact of carbamazepine (CBZ) and propranolol (PROP), two widespread pharmaceuticals in the aquatic environment, were investigated on morphology and gene transcription of early larvae of Mytilus galloprovincialis. Pharmaceuticals were first tested in a wide concentration range (from 0.01 to 1000 μg/L) through the 48-hpf embryotoxicity assay. The results showed that both compounds significantly affected embryo development from environmental concentrations. Although similar EC50 were obtained, (≅ 1 μg/L) CBZ induced a progressive increase in embryo malformations, whereas PROP app...
Source: Chemosphere - Category: Chemistry Authors: Tags: Chemosphere Source Type: research
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Source: Saudi Journal of Biological Sciences - Category: Biology Source Type: research
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Source: Endocrine Regulations - Category: Endocrinology Tags: Endocr Regul Source Type: research
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Source: Endocrine Regulations - Category: Endocrinology Tags: Endocr Regul Source Type: research
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Source: Carbohydrate Polymers - Category: Biomedical Science Source Type: research
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