فهرست مطالب fatemeh sadat dehghani

Regarding the specific physiochemical and biomedical properties of graphene oxide (GO), it has been a long time that experts have preferred anticancer drug cocktails to single drugs. Given that the former may develop a more balanced molecular basis for recent chemotherapeutic strategies. In this study, graphene oxide was investigated as a bioavailable nanocarrier for indoles. The synthesized components were characterized using Fourier transform infrared (FTIR), X-ray diffraction (XRD), UV–Vis spectroscopies, and scanning electron microscopy (FE-SEM) techniques. Interestingly, maximum drug loading efficiency was achieved in the neutral media (pH=7). The release analysis in different media revealed higher rate in both acidic and basic media than in neutral media. However, the total loaded drug was released in less than 80 minutes in all the systems prepared. The MTT assay results toward mesenchymal stem cells exhibited a desirable biocompatibility of GO-indole and GO. Taken together, the prepared GO-indole has suitable drug loading efficiency.

The use of core-shell nanoparticles as controlled drug delivery vehicles has proven successful, yet their production and application require costly and toxic chemicals. We hereby use a natural glycosylated flavonoid (rutin) for synthesis of a nanocarrier for doxorubicin delivery. For this target, a convenient two-step synthesis was processed including a synthesis of bio-zinc ferrite nanoparticles without N2 gas and chitosan coating (CS; bio-zincferrite@chitosan). The as-synthesized magnetic nanogel was characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transformed infrared (FT-IR) spectroscopy, and electro-analytical methods including cyclic voltammetry and electrochemical impedance spectroscopies. The collapse/swell potential of the coated CS layers of the bio-NPs were found to be responsible for the observed pH dependence of doxorubicin delivery. Results exhibited the drug release of bio-nanogel can be induced at pH ranging from 6 to 7. Therefore, capacity and efficiency parameters of the anti-cancer drug onto the NPs were obtained as equal to 43.5% and 78.6%. The present work provides a simple method to fabricate smart pH-responsive nanogel for cancer therapy.