Chitosan-graft-polyethylenimine (CHI-g-PEI) copolymer has been used for theimprovement of low transfection efficiency of chitosan. The present study aims to test thepulmonary toxicity and efficiency of CHI-g-PEI as an aerosol gene carrier. Mice were exposedto aerosol containing green-fluorescent protein (GFP)-polyethylenimine (PEI) or GFP-CHIg-PEI complexes for 30 min during the development of ...

objective: dna vaccines have been widely used to develop immunity against various pathogens including parasites and viruses. the potential of dna vaccine to induce an effective immune response is related to the expression levels of the encoded protein in eukaryotic cells. therefore, optimization of plasmid dna delivery system is a major concern in protein expression in order to make an efficien...

An electrochemical sensor based on carbon paste modified with polyethyleneimine was developed and employed for the determination of caffeic acid in aromatic herbs. The prepared by mixing polyethylenimine (1.5% v/v), graphite powder, mineral oil. polyethylenimine-based electrode showed an enhancement charge transfer at electrode–solution interface a higher current intensity reaction acid, compar...

In this work, partially hydrolyzed thermoresponsive polyoxazoline was used for complexation with DNA. The resulting polyelectrolyte complex particles were characterized by dynamic and electrophoretic light scattering. They showed narrow size distribution and hydrodynamic diameter of 183 ±5 nm at 65 °C. To improve stability of the system at physiological temperature, the particles were coated wi...

The release of anthraquinone dyes from β-cyclodextrin modified, hyperbranched polyethylenimine (PEI-CD) was investigated. 5,8-Dichloro-1,4-dihydroxyanthraquinone (AQ-OH) was enclosed simply by ionic attraction between the phenolate groups of AQ-OH and the protonated amino groups of polyethylenimine (PEI). Additionally, the adamantyl moieties of 1,4-bis-N-adamantylaminoanthraquinone (AQ-Ada) wer...

Chitosan-graft-polyethylenimine (CHI-g-PEI) copolymer has been used for theimprovement of low transfection efficiency of chitosan. The present study aims to test thepulmonary toxicity and efficiency of CHI-g-PEI as an aerosol gene carrier. Mice were exposedto aerosol containing green-fluorescent protein (GFP)-polyethylenimine (PEI) or GFP-CHIg-PEI complexes for 30 min during the development of ...

A polyethylenimine-impregnated hierarchical silica monolith exhibited significantly higher CO(2) capturing capacity than other silica-supported amine sorbents, and produced a reversible and durable sorption performance.

Self-assembly of hyperbranched polyethylenimine (PEI) and fatty acids leads to supramolecular inverted micellar structures that are able to irreversibly transfer water-soluble guest molecules into organic solvents.

Polyethylenimine (PEI), an organic branched or linear polyamine polymer, has been successfully used in the past for DNA complexation and transfection in vitro and in vivo into several cell lines and tissues. PEI was also applied in different fields from gene therapy and several studies have emphasized the importance of this polymer in medicinal chemistry. In this brief critical review the uses ...

polyethylenimine (pei) has been proposed as a non-viral vector, and has been successfully used to transfer reporter genes into the central nervous system (cns), kidneys, and lungs of adult mice. neuropeptide y (npy) is a peptide expressed in the hypothalamus and is important in the regulation of body weight. using pei combined with stereotactic microinjection, we have successfully transferred c...