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1.
Materials (Basel) ; 15(16)2022 Aug 21.
Artículo en Inglés | MEDLINE | ID: mdl-36013904

RESUMEN

Nanocomposites based on iron oxide/titanium oxide nanoparticles were prepared by employing green synthesis, which involved phytochemical-mediated reduction using ginger extract. XRD confirmed the composite formation, while scanning electron microscopy (SEM), dynamic light scattering (DLS), and energy-dispersive X-ray spectroscopy (EDX) was employed to investigate the particle size, particle morphology, and elemental analysis. SEM indicated the formation of particles with non-uniform shape and size distribution, while EDX confirmed the presence of Fe, Ti and oxygen in their elemental state. The surface effects were investigated by Fourier transform infrared radiation (FTIR) and impedance spectroscopy (IS) at room temperature. IS confirmed the co-existence of grains and grain boundaries. Thus, FTIR and IS analysis helped establish a correlation between enhanced surface activity and the synthesis route adopted. It was established that the surface activity was sensitive to the synthesis route adopted. The sample density, variation in grain size, and electrical resistivity were linked with surface defects, and these defects were related to temperature. The disorder and defects created trap centers at the sample's surface, leading to adsorption of CO2 from the environment.

2.
Pak J Pharm Sci ; 32(3 (Supplementary)): 1179-1183, 2019 May.
Artículo en Inglés | MEDLINE | ID: mdl-31303588

RESUMEN

The current article discusses the activities of several synthesized metal heterochelates in in-vitro as anti-ulcer agents followed by their docking study. For this purpose, two important ligands like 8-hydroxyquinoline and DL-methionine were used in synthesis of heterochelates of metal including Cr (III), Mn (II), Fe (III), Co (II), Ni (II), Cu (II), Zn (II), Cd (II) and Pb (II). It was observed that these complexes showed excellent urease inhibition activities in which thiourea was the standard having IC50 value 21.6 ± 0.12µM. The Cu (II) complex showed potent inhibitory activity (22.6 ± 0.72 µM) when compared with the standard thiourea (21.6±0.12µM) among the nine synthesized complexes while Mn (II), Fe (III), Cd (II) and Pb (II) also showed better inhibitory activities. The urease inhibitory activities of hetercochelates also tested and validated by docking analysis.


Asunto(s)
Quelantes/química , Inhibidores Enzimáticos/farmacología , Ureasa/antagonistas & inhibidores , Proteínas Bacterianas/antagonistas & inhibidores , Proteínas Bacterianas/química , Proteínas Bacterianas/metabolismo , Dominio Catalítico , Quelantes/farmacología , Evaluación Preclínica de Medicamentos , Inhibidores Enzimáticos/química , Simulación del Acoplamiento Molecular , Sporosarcina/enzimología , Ureasa/química , Ureasa/metabolismo
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