The use of copper-containing fungicides in plant protection has a long history and is today widespread in both organic and conventional agriculture in Germany. The treatments are primarily used to control plant diseases such as downy mildew in vines and hops, collar rot and canker, and apple scab in fruit trees. The regularly re-approval of copper as a pesticide in the European Union is always accompanied by critical discussions about the toxic effects of copper on soil organisms, especially earthworms.
View Article and Find Full Text PDFThe availability of nesting resources influences the persistence and survival of bee communities. Although a positive effect of artificial nesting structures has frequently been shown for aboveground cavity-nesting wild bees, studies on below ground-nesting bees are rare. Artificial nesting hills designed to provide nesting habitats for ground-nesting bees were therefore established within the BienABest project in 20 regions across Germany.
View Article and Find Full Text PDFIn summer term 2020, the clinical phase of the undergraduate medical curriculum at University Medical Center Göttingen was restructured since distance teaching had to be used predominantly due to contact restrictions during the COVID-19 pandemic. This paper investigates the impact of restructuring the clinical curriculum on medical students' satisfaction and learning outcomes. In each cohort, the 13-week curriculum was divided into two parts: During the first 9 weeks, factual knowledge was imparted using distance teaching by means of a modified inverted classroom approach.
View Article and Find Full Text PDFEnvironmental factors shape the production and accumulation processes of plant secondary metabolites in medical and aromatic plants and thus their pharmacological and biological activity. Using an environmental metabolomics approach, we determined chemotypes and specific compounds on the basis of essential oils (EOs) from roots of 10 Iranian L. populations and related them to geographical, climate, and edaphic data.
View Article and Find Full Text PDFGeographic location and connected environmental and edaphic factors like temperature, rainfall, soil type, and composition influence the presence and the total content of specific plant compounds as well as the presence of a certain chemotype. This study evaluated whether geographic, edaphic, and climatic information can be utilized to predict the presence of specific compounds from medicinal or aromatic plants. Furthermore, we tested rapid analytical methods based on near infrared spectroscopy (NIR) coupled with gas chromatography/flame ionization (GC/FID) and gas chromatography/mass spectrometry (GC/MS) analytical methods for characterization and classification metabolite profiling of Boiss.
View Article and Find Full Text PDFBiochem Biophys Res Commun
September 2016
High extracellular S100A4 level proves a specific characteristic of some cancer cases, including malignant melanoma. Concerning the latter, extracellular S100A4 in an autocrine manner was shown to promote prometastatic activation of A375 cells by interaction with the receptor for advanced glycation endproducts (RAGE). We hypothesized that interaction of extracellular S100A4 with RAGE in a paracrine manner will affect endothelial cell (EC) integrity thus further promoting melanoma metastasis.
View Article and Find Full Text PDFS100A4, a member of the S100 protein family of EF-hand calcium-binding proteins, is overexpressed in various tumour entities, including melanoma, and plays an important role in tumour progression. Several studies in epithelial and mesenchymal tumours revealed a correlation between extracellular S100A4 and metastasis. However, exact mechanisms how S100A4 stimulates metastasis in melanoma are still unknown.
View Article and Find Full Text PDFS100A4, synthesized and secreted from both tumor and stroma cells, modulates an aggressive tumor phenotype in various cancers by intracellular and extracellular interactions which are not completely understood. Because of the high content of tumor-associated macrophages in melanoma, here, a syngeneic model (coculture of mouse B16-F10 melanoma cells (Mel) and RAW264.7 macrophages (Mϕ); administration (i.
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