We present optical spectroscopy of the host galaxies of four quasi-stellar objects (QSOs)—PG 1444 407, PKS 2349 147, 3C 323.1, and 4C 31.63—having a redshift range . The spectra were obtained at 0.1 ≤ z ≤ 0.3 the Keck Observatory with the Low Resolution Imaging Spectrograph instrument offset 2 –4 from the nucleus at several position angles in each galaxy. The objects close to 3C 323.1 and PKS 2...

Alexander Jehn / Albrecht Kirschner Nicola Wurthmann (Hg.), IG Farben zwischen Schuld und Profit. Abwicklung eines Weltkonzerns (Veröffentlichungen der Historischen Kommission für Hessen 91). Marburg: Historische 2022. 407 S. ISBN 978-3-942225519. € 32,–

Evidence is presented that a high level Shiga toxin-producing strain Shigella dysenteriae 60R adheres to and invades the epithelial cell lines Hct8 and Henle 407. The invasive phenotype of S. dysenteriae 60R differs in four ways from the heretofore studied invasive Shigella phenotypes. First, S. dysenteriae 60R lacks the virulence plasmid characteristic of other invasive Shigella spp. and enter...

Thermoreversible gel of meloxicam, efficient for the treatment of joint diseases, was aimed to prepare for night application available for chronotherapy in this study. Poloxamer 407 and 188 polymers were used at 20-30% w/w as a vehicle in combination with different additives (polyvinylmethylether maleic anhydride copolymer, hydroxypropyl methylcellulose, polyethylene glycol 400, dimethyl sulfox...

The pharmacokinetic properties and tolerability of a triamcinolone acetonide poloxamer 407 hydrogel for intratympanic application were investigated in a guinea pig model. Evaluation of in vivo release kinetics showed very high initial perilymph drug levels, with clinically relevant levels present for a minimum of 10 days. Assessment of auditory brainstem response thresholds showed a minimal, de...

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Epithelial cell infection by Shigella flexneri 2a was studied in an in vitro model system. Using the Henle 407 human intestinal epithelial cell line as host cells, a standardized experimental protocol which allowed quantitative measurement of infection was developed. Intravellular residence of infecting organisms was confirmed by indirect fluorescent-antibody staining of unfixed and methanol-fi...

Bovine serum albumin (BSA) nanoemulsions were produced by high pressure homogenization with a tri-block copolymer (Poloxamer 407), which presents a central hydrophobic chain of polyoxypropylene (PPO) and two identical lateral hydrophilic chains of polyethylene glycol (PEG). We observed a linear correlation between tri-block copolymer concentration and size - the use of 5mg/mL of Poloxamer 407 y...