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How does graphene oxide get in the body? 

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Importantly, similar to previously reported graphene inhalation data, this short-term nose-only inhalation study found only minimal or unnoticeable graphene oxide toxicity in the lungs and other organs.
Graphene oxide with functional groups has a promising biological effect.
Hence, graphene oxide is a particularly promising substrate for the examination of biological materials by electron microscopy.
Hence, the structural investigations of graphene oxide have complemented the findings for biological activity and emerged as an advanced functional biomaterial for biomedical applications of graphene.
The strong impact of the size of graphene oxide on the interaction between proteins and graphene oxide has been confirmed, as well.
Graphene oxide shows great promise as a material for biomedical applications, e. g., as a multi-drug delivery platform.
Besides, graphene oxide has a negative effect on the biological treatment.
Furthermore, graphene oxide acts as a general enhancer of cellular growth by increasing cell attachment and proliferation.
In striking contrast, graphene oxide is non-toxic for “bulk” cancer cells (non-stem) and normal fibroblasts.
Our results point out implications for in vitro studies of graphene oxide materials concerning the effective dose delivered to cells and corona bioactivity.

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Dextran-coated magnetic nanoparticles can be prepared using various methods. One approach involves synthesizing iron oxide nanoparticles through alkaline precipitation and coating them with dextran to enhance biocompatibility and stability. Another method utilizes dextran-coated iron oxide nanoparticles as drug carriers, such as for delivering curcumin to overcome its hydrophobicity. Additionally, dextran shell-iron oxide core nanoparticles loaded with protocatechuic acid have been developed for anti-inflammatory purposes, showcasing potential therapeutic applications in vascular inflammation. Furthermore, a study demonstrated the synthesis of dextran-coated iron oxide nanoparticles for medical device coatings, showing good biocompatibility and no cytotoxic effects on cells. These diverse approaches highlight the versatility and potential of dextran-coated magnetic nanoparticles in various biomedical applications.
How does the chemical composition of Nb2O5 affect the redox properties of a GCE modified electrode?
5 answers
The chemical composition of Nb2O5 significantly influences the redox properties of a GCE modified electrode. Different studies have explored the synthesis and modification of Nb2O5 to enhance its electrochemical performance. For instance, the synthesis of Nb2O5/rGO composites has shown improved specific capacitance and electron transfer compared to rGO alone. Additionally, in situ doping of alkali metals in Nb2O5 has demonstrated a twofold enhancement in photoelectrochemical water splitting efficiencies, indicating improved charge carrier density and surface charge transfer. Moreover, Nb2O5/graphene nanocomposites have exhibited superior electrochemical conductivity and cyclic stability, making them effective electrodes for supercapacitor applications. These findings collectively highlight the crucial role of Nb2O5 chemical composition in enhancing the redox properties of GCE modified electrodes.
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7 answers
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7 answers
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