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A simple method has been developed for the preconcentration of copper(II) based on the adsorption of its Modified nano polyacrylonitrile fiber. Modified nano polyacrylonitrile fiber (PANF) was prepared by adding of acrylic fibers to mSethanolamine (MMA) with different concentration solutions. The stability of a chemically Modified nano polyacrylonitrile fiber especially in concentrated hydrochloric acid which was then used as a recycling and pre-concentration reagent for further uses of modified nano polyacrylonitrile fiber. The application of this Modified nano polyacrylonitrile fiber for sorption of a series of metal ions was performed by using different controlling factors such as the pH of metal ion solution and the equilibration shaking time by the static technique. Cu (II) was found to exhibit the highest affinity towards extraction by these Modified nano polyacrylonitrile fiber phases. The pronounced selectivity was also confirmed from the determined distribution coefficient (Kd) of all the metal ions, showing the highest value reported for Cu (II) to occur by Modified nano polyacrylonitrile fiber. The potential applications ofModified nano polyacrylonitrile fiber for selective extraction of Cu(II) to occur from aqueous solution were successfully accomplished as well as pre- concentration of low concentration of Cu(II) (60 pg ml-1) from natural tap water with a pre-concentration factor of 100 for Cu(II) off-line analysis by flame atomic absorption analysis. Manuscript profile

This study sought to investigate how ∆9 Tetrahydrocannabinol (THC) affects inflammation within the adipose tissue of an obese rat model. Female Sprague-Dawley rats, aged 4 weeks (total: 15 rats), were divided into four groups: Control, which received a standard diet; Obese, which were fed a high-fat diet (HFD); and THC, which received both THC treatment and an HFD. After a 16-week period, we measured their body weight and C-reactive protein (CRP) levels. Adipose tissue samples were collected to analyze the expression levels of Mcp, Tnf-α, and Il-1β mRNA. The obese rats showed a significant increase in body weight compared to the other groups, while the THC-treated group exhibited significantly lower weights than the obese rats. CRP levels were notably higher in the obese group than in the other groups, but CRP levels in the THC group were significantly lower than in the obese group. Expression levels of Mcp, Tnf-α, and Il-1β mRNA were markedly higher in the obese group compared to the control. In contrast, the THC group displayed significantly lower mRNA expression levels than the obese group. Treatment with a low dose of THC resulted in a reduction of inflammation markers in the adipose tissue of obese rats. Manuscript profile

This study aimed to investigate the effects of zinc oxide nanoparticle shape on the optical characteristics of tapioca starch films and the microbial growth kinetics of Escherichia coli. For this purpose, nanorods, nano-spheres, and nanoparticles of ZnO at 0.5, 1.0, and 2.0% levels were incorporated into the tapioca starch film solution by solvent casting method. The results showed that tapioca starch-based films were colorless, and by adding different morphology of ZnO nanoparticles and increasing nanoparticles concentrations, the lightness and transparency of the films decreased, and a*, b* and ΔE increased significantly (p<0.05). The bionanocomposite films containing nano-ZnO represented antibacterial activity against E. coli. Their action was directly related to their concentration. With increasing the nano-ZnO concentration, the antibacterial activity increased, and the microbial growth kinetics tended downward. The morphology of nano-ZnO had a remarkable effect on their antibacterial activity, so the highest activity was related to ZnO nano-spheres. Manuscript profile

شیمی درمانی با استفاده از سیستم های دارورسانی می تواند سلول های تومور را به طور انتخابی هدف قرار دهد و سلول های طبیعی را تحت تاثیر قرار ندهد. در این مطالعه، یک سیستم دارورسانی خاص با پپتید NL2 تثبیت شده بر روی سطح نانو داروی پلیمری برای درمان تومور پستان طراحی شد. ساختار سوم پپتیدNL2 (AEGEFIHNRYNRF FYWYGDPAK) از پایگاه داده انتخاب و سنتز شد. پس از آن، به نانوکامپوزیت پلی 3،4-دی هیدروکسی-1- فنیل آلانین (DOPA)/SiO2 سنتز شده جفت شد و برای تحویل هدفمند 5- فلوئورواوراسیل (5-FU) بر رده سلول های رده سرطان پستان SK-BR3 و رده سلول های نرمال پستان MCF-10A مورد آزمایش قرار گرفت. نتایج MTT‌ و همولیز گلبول های قرمز نشان داد که اجزای نانوکامپویست و پپتید NL2 هیچ گونه سمیت سلولی ندارند در صورتی که نتایج تست MTT‌ بعد از شستشو نشان داد که نانوکامپوزیت های عملکردی شده با پپتید NL2‌ برای سلول های دارای مارکر Her2 یعنی سلول های SK-BR3‌ دارای اختصاصیت بوده ولی بعد از شستشو از سلول های MCF-10A‌ که فاقد این مارکر هستند جدا شده و داروی ۵- فلورویوراسیل نمی تواند آثار سمی خود را بر این سلول ها اعمال کند. Manuscript profile