زمينه و هدف: پژوهش بر روي نانومواد هوشمندي كه با اثرات آنتي اكسيداني، تحريك تكثير سلول هاي عصبي، تعديل سيستم ايمني و فاكتورهاي التهابي سبب تسريع روند بازسازي و درمان اعصاب مي گردند، از اهميت بالايي برخوردار است. هدف از اين مطالعه تهيه نانوذرات سريم اكسيد پوشيده با سينامون و ارزيابي اثرات آنتياكسيداني و سميتسلولي آن بر رده سلول هاي PC12 ميباشد.
روش كار: نانوذرات سريم اكسيد پوشيده با سينامون تهيه شد و خواص ساختاري آن با تصاوير ميكروسكوپ الكتروني و اسپكتروسكوپي تبديل فوريه مادون قرمز مورد ارزيابي قرار گرفت. خصوصيات آنتي اكسيداني تركيبات از روش به دام انداختن راديكال آزاد 2 و 2 دي فنيل - 1- پيكريل هيدرازيل ارزيابي شد. ميزان زنده ماني سلول ها از طريق آزمون MTT سنجيده شد. تجزيه و تحليل داده ها توسط نرم افزار SPSS انجام شد.
يافته ها: طيف هايFTIR و تصاوير TEM نشان دهنده فراوري نانوذراتي با متوسط اندازهاي كمتر از 100 نانومتر همراه با پوشش سينامون بر سطح آنها است. همچنين، ظرفيت آنتي اكسيداني در نانوذره سريم اكسيد پوشيده با سينامون نسبت به عصاره و نانوذره به تنهايي در غلظت هاي مشابه به طور معناداري (0/038
چكيده لاتين :
Background & objectives: Research on intelligent nanomaterials that accelerate the process of
nerve regeneration and treatment by different methods such as antioxidant effects, stimulation of
nerve cell proliferation, modulation of the immune system and inflammatory factors is great
importance. The aim of this study was to prepare cinnamon-coated cerium oxide nanoparticles
and evaluate its antioxidant and cytotoxicity effects on PC12 cell line.
Methods: Cinnamon-coated cerium oxide nanoparticles were prepared and their structural
properties were evaluated by transmission electron microscopy (TEM) and Fourier transform
infrared spectroscopy (FTIR). To evaluate the antioxidant properties of the compounds, free
radical trapping methods 2 and 2 diphenyl-1-picryl hydrazyl were used. Cell viability in the
presence of compounds was measured by a toxicity test (MTT) [3-(4,5-dimethylthiazol-2-yl)-2,5-
diphenyltetrazolium bromide]. Data were analyzed by one-way analysis of variance and Tukey's
post hoc test.
Results: FTIR spectra and TEM images showed the processing of nanoparticles with an average
size of less than 100 nm with cinnamon coating on their surface. Also, the antioxidant capacity of
cinnamon-coated cerium oxide nanoparticles was significantly higher (*p<0.038) than extracts
and nanoparticles alone at similar concentrations. Evaluation the results of cytotoxicity showed
that the lowest toxicity was observed in the cinnamon-coated cerium oxide nanoparticles group.
Conclusion: Results showed higher antioxidant properties and low cytotoxic effects of cinnamoncoated
cerium oxide nanoparticles compared to other groups, which leads to better efficacy,
proliferation, longer cell survival, its green synthesis and coverage by cinnamon.