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Showing papers by "Markus Meissner published in 2013"



Journal ArticleDOI
TL;DR: The results suggest that the PPARα-dependent anti-angiogenic action of Wy14643 seems to be mediated, in part, by Wy 14643-dependent but PPAR α-independent regulation of cathepsin B expression.
Abstract: Cathepsin B has been shown to be important in angiogenesis; therefore, understanding its regulation in endothelial cells should provide fundamental information that will aid in the development of new treatment options. Peroxisome proliferator-activated receptors (PPARs) have been shown to have anti-inflammatory, anti-angiogenic and anti-tumorigenic properties. We explored the influence of a PPARα agonist on cathepsin B expression in human endothelial cells. The PPARα agonist, Wy14643, was found to inhibit cathepsin B protein expression. Further studies demonstrated the Wy14643-dependent but PPARα-independent suppression of cathepsin B. This has been previously described for other PPAR agonists. Wy14643 suppressed the accumulation of cathepsin B mRNA, which was accompanied by the selective suppression of a 5′-alternative splice variant. Consistent with these results, luciferase promoter assays and electrophoretic mobility shift analysis demonstrated that the suppression was facilitated by reduced binding of the transcription factors USF1/2 to an E-box within the cathepsin B promoter. Additionally, Wy14643 treatment resulted in a reduction in cathepsin B half-life, suggesting a posttranslational regulatory mechanism. Overall, our results suggest that the PPARα-dependent anti-angiogenic action of Wy14643 seems to be mediated, in part, by Wy14643-dependent but PPARα-independent regulation of cathepsin B expression.

10 citations


Journal ArticleDOI
28 Jul 2013-Hautarzt
TL;DR: NPWT has become one of the standard therapeutic options, especially for non-healing diabetic, venous and arterial ulcers of the legs, when managing large wounds after tumor surgery, and is frequently used to induce granulation tissue and reduce wound size.
Abstract: In den letzten Jahren hat die Vakuumversiegelung von akuten und chronischen Wunden in der Dermatochirurgie immer mehr Anhanger gefunden. Gerade bei nicht heilenden diabetischen, chronisch venosen oder auch arteriellen Ulzerationen im Fus- und Unterschenkelbereich ist diese Technik ein fester Bestandteil der Behandlungsoptionen. Aber auch in der Versorgung von grosen Exzisionswunden, beispielsweise nach der Entfernung groser Tumoren, wird die Vakuumtherapie vorzugsweise zur Induktion von Granulationsgewebe und Verkleinerung des Wunddefekts vor Spalt- oder Vollhauttransplantation oder lokaler Lappenplastik verwendet. Neben diesen allseits bekannten Anwendungsmoglichkeiten kann die Vakuumversiegelung auch fur „neue“ oder seltenere Anwendungen gute Dienste leisten, von denen einige in diesem Ubersichtsbeitrag dargestellt werden sollen.

6 citations