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Operation Method published in Lancet

Cluster Member Prof. Nickenig and an international team of physicians published a recent study about the minimal invasive treatment of tricuspid regurgitation in the Journal 'Lancet'.

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Georg Nickenig, Marcel Weber, Philipp Lurz, Ralph Stephan von Bardeleben, Marta Sitges, Paul Sorajja, et al.: Transcatheter edge-to-edge repair for reduction of tricuspid regurgitation: 6-month outcomes of the TRILUMINATE single-arm study“, The Lancet, Internet: https://doi.org/10.1016/S0140-6736(19)32600-5

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Die künstlerische Abbildung zeigt Seeigel der Art Arbacia punctulata, die Spermien (weiße Wolke) und Eier (orangefarbene Wolke) ins Wasser abgeben. Von den Eiern freigesetzte Pheromone steuern die Synchronität des Laichens.

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What Makes Sea Urchin and Salmon Sperm Swim

—A recent study by the Max Planck Institute for Multidisciplinary Sciences and the University of Bonn shows that pH plays a crucial role in sperm motility in sea urchins and salmon. A rise in pH activates the enzyme soluble adenylyl cyclase (sAC), which produces the messenger molecule cAMP and thereby regulates sperm movement. This mechanism may be widespread in many marine invertebrates and fish. The findings have now been published in the Journal Proceedings of the National Academy of Sciences.
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Immune cells remember their location

—A new AI-based method reconstructs spatial information about where immune cells were originally located in an organ, even after these cells have been removed from the tissue and analyzed individually. To accomplish this, Researchers at the University Hospital Bonn (UKB) and the University of Bonn use the transcriptome, i.e., the entirety of all messenger RNA transcripts produced by genes within a cell at a given time. The work has now been published in the journal Advanced Science and introduces the new MERLIN algorithm.
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B cells maintain antigen presentation in the splenic marginal zone

—A team of international researchers, including ImmunoSensation³ members Prof. Niels Lemmermann and Prof. Andreas Schlitzer, shows that B cells support antiviral CD8⁺ T-cell responses beyond antibody production. In a murine CMV model, B-cell deficiency weakened virus-specific CD8⁺ T-cell responses. Mechanistically, B-cell-derived lymphotoxin β maintained CD169⁺ macrophages and Langerin⁺ cDC1 cells in the splenic marginal zone, enabling efficient T-cell priming. The study was published in Cellular & Molecular Immunology.
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