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Einleitung: Das Dermatofibrosarcoma protuberans ist das Häufigste Sarkom der Haut, insgesamt hat es allerdings nur einen Anteil von, 132. Kongress der Deutschen Gesellschaft für Chirurgie

The present invention relates to the synthesis of GPI-related surface antigens of the parasite Toxoplasma gondii (T. gondii) and the resulting products obtained. These synthetic compounds are suitable for diagnosis of toxoplasmosis, as well as vaccine against toxoplasmosis, a diseases caused by infection with T. gondii.

The present invention relates to the synthesis of compounds derived from glycosylphosphatidylinositol (GPI) glycolipids from Toxoplasma gondii and the resulting products obtained. These synthetic compounds are suitable for diagnosis of toxoplasmosis and for use as a vaccine against diseases caused by infection with T. gondii.

The invention relates to a continuous flow process for the photoconjugation of chemical entities selected from the group comprising carbohydrates, including mono-, oligo- and polysaccharides, amino acids, peptides and proteins, unbranched and branched oligomers and polymers, including dendrimers, which process comprises at least the following steps: a) providing a mixture of the reactants dissolved in an aqueous or organic solvent; b) passing said mixture through a continuous flow reactor and concomitantly irradiating the mixture with light in order to initiate and perform the photoreaction. In preferred embodiments, the photoconjugation is a thiol-ene conjugation or a [2+2] cycloaddition. A further aspect of the invention relates to the conjugates obtainable by this continuous flow process, in particular dendronized polymers such as carbohydrate-dendronized polymers.

Diffusely infiltrative growth of human astrocytic gliomas is one of the major obstacles to successful tumor therapy. Thorough insights into the molecules and pathways signaling glioma cell invasion thus appear of major relevance for the development of targeted and individualized therapies. By miRNA [for full text, please go to the a.m. URL], 57th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)

The influence of the high temperature annealing ambient (N2 or Ar) on size controlled Si nanocrystals (NCs) in SiO2 ranging from ~2 to ~6 nm has been investigated in detail. Generally, N2 annealing is beneficial as the dangling bond density (Pb-defects at the NC/SiO2 interface) is about half accompanied by a doubled PL intensity. The N-related PL blueshift was found to be pronounced only for the small NCs whereas it appears to be insignificant for larger NCs. The origin of this N-blueshift was previously attributed to NC growth suppression by the presence of N. However, no evidence for this assumption is found by time-resolved PL, as the luminescence decay times are similar despite considerable N-blueshift. The exact location of the N incorporated during annealing was investigated by ToF-SIMS and ESR: Besides the distinct N-enrichment in the NC-layer, the K0-center (•Si≡N3) was detected indicating the formation of an interfacial N layer at the NC/SiO2 interface. ERD analysis enabled the quantification of the incorporated N as well as the excess Si. Combined with TEM analysis (determination of NC size) the calculation of the NC-density per superlattice layer and the thickness of the interfacial N-layer were achieved. It turns out that ~ 5×1014 N-atoms cm-2 exist at the NC, which is well in accordance to the optimum value of the bulk Si/SiO2 interface. These results support our recently suggested explanation for the N-blueshift that is based on the influence of the polarity of the surface terminating groups on the bandgap of the NC.