Search

Your search keyword '"Jetter, M."' showing total 389 results
Start Over Author "Jetter, M."
389 results on '"Jetter, M."'

132. Laterally Coupled InGaN/GaN DFB Laser Diodes

Author

Schweizer, H., primary, Gr�beldinger, H., additional, Dumitru, V., additional, Jetter, M., additional, Bader, S., additional, Br�derl, G., additional, Weimar, A., additional, Lell, A., additional, and H�rle, V., additional

Published
2002
Full Text
View/download PDF

137. All quantum dot mode-locked semiconductor disk laser emitting at 655 nm.

Author

Bek, R., Kersteen, G., Kahle, H., Schwarzbäck, T., Jetter, M., and Michler, P.

Subjects
SEMICONDUCTOR lasers, SEMICONDUCTOR devices, QUANTUM dots, QUANTUM electronics, EPITAXY
Abstract

We present a semiconductor disk laser mode-locked by a semiconductor saturable absorber mirror (SESAM) with emission in the red spectral range. Both the gain and the absorber structure are fabricated by metal-organic vapor-phase epitaxy in an anti-resonant design using quantum dots as active material. A v-shaped cavity is used to tightly focus onto the SESAM, producing pulses with a duration of about 1 ps at a repetition rate of 852 MHz. [ABSTRACT FROM AUTHOR]

Published
2014
Full Text
View/download PDF

150. Topical curcumin can inhibit deleterious effects of upper respiratory tract bacteria on human oropharyngeal cells in vitro: potential role for patients with cancer therapy induced mucositis?

Author

Lüer S, Troller R, Jetter M, Spaniol V, Aebi C, Lüer, Sonja, Troller, Rolf, Jetter, Marion, Spaniol, Violeta, and Aebi, Christoph

Abstract

Purpose: Curcumin exerts its anti-inflammatory activity via inhibition of nuclear factor κB. Oropharyngeal epithelia and residing bacteria closely interact in inflammation and infection. This in vitro model investigated the effects of curcumin on bacterial survival, adherence to, and invasion of upper respiratory tract epithelia, and studied its anti-inflammatory effect. We aimed to establish a model, which could offer insights into the host-pathogen interaction in cancer therapy induced mucositis.Methods: Moraxella catarrhalis (Mcat) and the oropharyngeal epithelial cell line Detroit 562 were used. Time-kill curves assessed the inhibition of bacterial growth and adherence assays and gentamicin protection assays determined the effect of curcumin-preincubated cells on bacterial adherence and invasion. Curcumin-mediated inhibition of pro-inflammatory activation by Mcat was determined via interleukin-8 concentrations in the supernatants. The synergistic role of secretory IgA (sIgA) on adherence was investigated.Results: Curcumin was bactericidal at concentrations >50 µM. Preincubation of Detroit cells for 60 min demonstrated that concentrations >100 µM inhibited bacterial adherence. Together with sIgA, curcumin inhibited adherence at concentrations ≥50 µM. Both 100 and 200 µM curcumin significantly inhibited Mcat cell invasion. Finally, curcumin inhibited Mcat-induced pro-inflammatory activation by strongly suppressing IL-8 release. At a concentration of 200 µM, 10 min of curcumin exposure inhibited IL-8 release significantly, and complete suppression required a pre-exposure time of ≥45 min.Conclusion: Curcumin, in clinically relevant concentrations for topical use, displayed strong antibacterial effect against a facultative upper respiratory tract pathogen by inhibiting bacterial growth, adherence, invasion, and pro-inflammatory activation of upper respiratory tract epithelial cells in vitro. [ABSTRACT FROM AUTHOR]

Published
2011
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results