Specimens containing Rheumatoid factor (RF) were examined for possible interference in Prolactin (PRL) measurement. PRL levels following polyethylene glycol (PEG) treatment were significantly lower than in untreated RFpositive samples (p<0.001; n=43) and spurious hyperprolactinemia was indicated in 7 percent. Gel filtration chromatography suggested that the PRL-like immunoreactivity was from as...

Delivering intact small interfering RNA (siRNA) into the cytoplasm of targeted cells in vivo is considered a major obstacle in the development of clinically applicable RNA interference-based therapies. Although dextran hydroxyethyl methacrylate (dex-HEMA) nanogels have been reported to be suitable carriers for siRNA delivery in vitro, and are ideally sized (approximately 180 nm) for intravenous...

Objective: The study aimed to solubilization of imidazole drugs of interest; ketoconazole (KT) and miconazole nitrate (MN), for enhancement of the water solubility, the dissolution properties and the antimycotic activity of these drugs. Method: Different solid dispersion methods were used to prepare various dispersion systems of KT and MN using polyethylene glycol 4000 (PEG 4000), polyethylene ...

Nano- and microceramics of Gd3Ga5O12 garnet doped with 1 mol % Tb3+ ions were synthesized via co-precipitation and high-temperature solid-state reaction methods. X-ray diffraction measurements confirmed the formation of the garnet structure with Ia3d space group in all investigated samples. Atomic force microscopy surface images and grain-size distribution diagrams of Gd3Ga5O12: 1 mol % Tb3+ na...

A unique hyperbranched polymeric system with a linear poly-2-dimethylaminoethyl methacrylate (pDMAEMA) block and a hyperbranched polyethylene glycol methyl ether methacrylate (PEGMEMA) and ethylene dimethacrylate (EGDMA) block was designed and synthesized via deactivation enhanced atom transfer radical polymerisation (DE-ATRP) for efficient gene delivery. Using this unique structure, with a lin...

Large numbers of viable protoplasts of pea (Pisum sativum) and grass pea (Lathyrus sativus) were efficiently and reproducibly obtained and, for the first time, fused. Different procedures for fusion were compared, based either on electrofusion (750, 1000, 1250 or 1500 V cm(-1)), or on the use of macro or micromethods with a polyethylene glycol (PEG 6000 or PEG 1540), or a glycine/high pH soluti...

Silicon surfaces were modified by covalent attachment of a self-assembled (SA) polyethylene glycol (PEG) film. Adsorption of albumin, fibrinogen, and IgG to PEG immobilized silicon surfaces was studied by ellipsometry to evaluate the non-fouling and non-immunogenic properties of the surfaces. The adhesion and proliferation of human fibroblast and Hela cells onto the modified surfaces were inves...

PEGylation changes the physical and chemical properties of the biomedical molecule, such as its conformation, electrostatic binding, and hydrophobicity, and results in an improvement in the pharmacokinetic behavior of the drug, while it also causes some disadvantages of which cannot be neglected. The available data manifests that polyethylene glycol (PEG) itself shows potential risk, such as im...

Polyethylene glycol (PEG) 4000 is one of numerous substances used as non-absorbable markers to correct for variable faecal output when assessing daily faecal losses of nutrients. The introduction of enteric coated micro-encapsulated pancreatic enzyme (EMPE) preparations has greatly improved the control of fat malabsorption in cystic fibrosis and chronic pancreatitis patients. Unfortunately, the...

Nanoparticles are an essential component in the emerging field of nanomedical imaging and therapy. When deployed in vivo, these materials are typically protected from the immune system by polyethylene glycol (PEG). A wide variety of strategies to coat and characterize nanoparticles with PEG has established important trends on PEG size, shape, density, loading level, molecular weight, charge and...