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...

We describe a simple approach for assaying immune complexes from serum by usinganti-lgG as the indicatorafter a three-step extraction procedure with polyethylene glycol. Analysisof the data indicatesthat assaysof suchextractsfor immune complexes by absorbance nephelometry, kinetic light scatter, and immunoradiometric techniques correlate well. For 116 samples, results by absorbance nephelometry...

Bioconsequences Section, Unilever Research Port Sunlight Laboratory, Port Sunlight, Wirral, Merseyside L62 4XN, U.K. Polyethylene glycols are an important group of polymers used in the manufacture of explosives, cosmetics and pharmaceuticals. In addition, the polyoxyethylene group is the hydrophilic head group of non-ionic surfactants such as the alcohol ethoxylates used in detergent formulatio...

We report a reliable radioimmunoassay for plasma progesterone in which polyethylene glycol ("Carbowax 6000") is used to separate antibody-bound and free hormone. Initially, progesterone is concentrated by putting the sample through a column of LH-20 Sephadex. Procedural losses in each sample are not monitored. We compared the reliability and practicality of this method with that of another meth...

An enzyme-linked immunosorbent assay (ELISA) has been developed to detect amebic antigen in polyethylene-glycol-precipitable circulating immune complexes. Seventy-nine percent of 191 patients with amebic liver abscesses and 46% of 26 Entamoeba histolytica cyst passers had positive tests. None of the samples from 43 apparently healthy controls, 8 patients with past amebic liver abscesses or 31 p...

Pure polymer films cannot meet the diverse range of controlled release and material properties demanded for the fabrication of medical implants or other devices. Additives are added to modulate and optimize thin films for the desired qualities. To characterize the property trends that depend on additive concentration, an assay was designed which involved casting a single polyester poly(lactic-c...

Human glycol ether poisonings are sparsely reported in the medical literature. We describe a healthy 22-month-old boy who accidentally drank up to 330 mL of brake fluid containing a 75% bleed of various glycol ethers (5%–50% polyethylene glycol monomethyl ether, 15%– 40% triethylene glycol monoethyl ether, 1%–30% triethylene glycol monomethyl ether, 1%–25% triethylene glycol monobutyl ether, 1%...

Polymer nanoparticles (PNPs) were formed from amphiphilic diblock copolymers consisting of a hydrophilic block with pendant polyethylene glycol tosylate (PEG-OTs) groups and a hydrophobic block with pendant terthiophene (TTT) groups. The resulting PNPs were characterized using dynamic light scattering (DLS) and transmission electron microscopy (TEM) to determine size, shape, and polydispersity....

We assessed the efficacy of a new thyroxine radioimmunoassay kit (Abott) in which polyethylene glycol is used to separate bound from free hormone. Mean serum thyroxine was 88 +/- 15 (+/-SD) microgram/liter for 96 normal persons. Results for hypothyroid and hyperthyroid persons were clearly separated from those for normal individuals. Women taking oral contraceptive preparations showed variable ...

an atom-efficient, eco-friendly, solvent-free, high yielding, multicomponent green strategy to synthesize triazolo[1,2-a]indazole-triones derivatives by the one-pot condensation of aldehyde, dimedone, and phenyl urazole is presented. a series of different substituted aromatic aldehydes including either electron-withdrawing or electron-donating groups used in this reaction participated well and ...