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Gabriel Olaiya Omotoso,Ismail Temitayo Gbadamosi,Theresa Titilayo Afolabi,Ahmad Bolakale Abdulwahab,Adelaja Abdulazeez Akinlolu 대한해부학회 2018 Anatomy & Cell Biology Vol.51 No.2
Cuprizone is a neurotoxin with copper-chelating ability used in animal model of multiple sclerosis in which oxidative stress has been documented as one of the cascade in the pathogenesis. Moringa oleifera is a phytomedicinal plant with antioxidant and neuroprotective properties. This study aimed at evaluating the ameliorative capability of M. oleifera in cuprizone-induced behavioral and histopathological alterations in the prefrontal cortex and hippocampus of Wistar rats. Four groups of rats were treated with normal saline, cuprizone, M. oleifera and a combination of M. oleifera and cuprizone, for five weeks. The rats were subjected to Morris water maze and Y-maze to assess long and short-term memory respectively. The animals were sacrificed, and brain tissues were removed for histochemical and enzyme lysate immunosorbent assay for catalase, superoxide dismutase, and nitric oxide. Cuprizone significantly induced oxidative and nitrosative stress coupled with memory decline and cortico-hippocampal neuronal deficits; however, administration of M. oleifera significantly reversed the neuropathological deficits induced by cuprizone.
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Asma M. Elsharif,Ismail Abdulazeez,Monerah A. Almarzooq,Shamsuddeen A. Haladu 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.116 No.-
In this study, three new non-ionic surfactants containing more than one active site and their nanohybrid’sderivatives were characterized and synthesized as effective corrosion inhibitors against steel using a newenvironmentally friendly protocol synthesis and traditional methods. All the newly prepared non-ionicsurfactants were confirmed by Fourier infrared (FTIR), NMR spectroscopy, and elemental analysis. Furthermore, the formation of the prepared nanoparticles and nanohybrid silver nanoparticles (HPDS,HPDO, and HPDE) were confirmed using ultraviolet–visible (UV–vis) spectroscopy. Scanning electronmicroscopy (SEM) was also used to characterize AgNPs and nanohybrid’s derivatives (HPDS, HPDO,and HPDE). The molecules exhibited excellent corrosion inhibitive performance in the acid medium withthe nanohybrid’s molecules achieving 98.8, 93.7, and 99.9 % at 200 ppm, for LANH, OANH, and SANH,respectively. The nanohybrid’s inhibitors described in this paper show better efficacy than the inhibitorsmentioned in the previous papers because they achieved a very excellent inhibition efficiency of up to99.9 % by environmentally friendly methods and at the lowest possible cost. In addition, it has the advantagethat it is compatible with many complex mixtures because it remains neutral in aqueous solutions,which makes it good at inhibiting corrosion of steel in acidic medium and important in oil and gas industry. The molecules were found to exhibit chemisorption on mild steel surface in acid media and fit theLangmuir adsorption isotherms with free energies of adsorption of 38.79, 36.52, and 38.46 kJ/molfor the LANH, OANH, and SANH, respectively. Similarly, the molecular level adsorption studies derivedfrom density functional theory resulted in theoretical adsorption energies of 364.7, 385.6, and427.9 kcal/mol for the nanohybrid’s molecules, indicating the strong adsorption and consequentlyhigher suppression of mild steel corrosion by the compounds.
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