@article{SteuerCostaVanderAuweraGlocketal.2019,
  author    = {Steuer Costa, Wagner and Van der Auwera, Petrus and Glock, Caspar and Liewald, Jana F. and Bach, Maximilian and Sch{\"u}ler, Christina and Wabnig, Sebastian and Oranth, Alexandra and Masurat, Florentin and Bringmann, Henrik and Schoofs, Liliane and Stelzer, Ernst H. K. and Fischer, Sabine C. and Gottschalk, Alexander},
  title     = {A GABAergic and peptidergic sleep neuron as a locomotion stop neuron with compartmentalized Ca2+ dynamics},
  series = {Nature Communications},
  volume    = {10},
  journal   = {Nature Communications},
  doi       = {10.1038/s41467-019-12098-5},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-223273},
  year      = {2019},
  abstract  = {Animals must slow or halt locomotion to integrate sensory inputs or to change direction. In Caenorhabditis elegans, the GABAergic and peptidergic neuron RIS mediates developmentally timed quiescence. Here, we show RIS functions additionally as a locomotion stop neuron. RIS optogenetic stimulation caused acute and persistent inhibition of locomotion and pharyngeal pumping, phenotypes requiring FLP-11 neuropeptides and GABA. RIS photoactivation allows the animal to maintain its body posture by sustaining muscle tone, yet inactivating motor neuron oscillatory activity. During locomotion, RIS axonal Ca2+ signals revealed functional compartmentalization: Activity in the nerve ring process correlated with locomotion stop, while activity in a branch correlated with induced reversals. GABA was required to induce, and FLP-11 neuropeptides were required to sustain locomotion stop. RIS attenuates neuronal activity and inhibits movement, possibly enabling sensory integration and decision making, and exemplifies dual use of one cell across development in a compact nervous system.},
  language  = {en}
}
@article{WolfBrandstetterBeutnerHessetal.2020,
  author    = {Wolf-Brandstetter, C and Beutner, R and Hess, R and Bierbaum, S and Wagner, K and Scharnweber, D and Gbureck, U and Moseke, C},
  title     = {Multifunctional calcium phosphate based coatings on titanium implants with integrated trace elements},
  series = {Biomedical Materials},
  volume    = {15},
  journal   = {Biomedical Materials},
  number    = {2},
  doi       = {10.1088/1748-605X/ab5d7b},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-254085},
  year      = {2020},
  abstract  = {For decades, the main focus of titanium implants developed to restore bone functionality was on improved osseointegration. Additional antimicrobial properties have now become desirable, due to the risk that rising antibiotic resistance poses for implant-associated infections. To this end, the trace elements of copper and zinc were integrated into calcium phosphate based coatings by electrochemically assisted deposition. In addition to their antimicrobial activity, zinc is reported to attract bone progenitor cells through chemotaxis and thus increase osteogenic differentiation, and copper to stimulate angiogenesis. Quantities of up to 68.9 ± 0.1 μg cm\(^{-2}\) of copper and 56.6 ± 0.4 μg cm\(^{-2}\) of zinc were deposited; co-deposition of both ions did not influence the amount of zinc but slightly increased the amount of copper in the coatings. The release of deposited copper and zinc species was negligible in serum-free simulated body fluid. In protein-containing solutions, a burst release of up to 10 μg ml\(^{-1}\) was observed for copper, while zinc was released continuously for up to 14 days. The presence of zinc was beneficial for adhesion and growth of human mesenchymal stromal cells in a concentration-dependent manner, but cytotoxic effects were already visible for coatings with an intermediate copper content. However, co-deposited zinc could somewhat alleviate the adverse effects of copper. Antimicrobial tests with E. coli revealed a decrease in adherent bacteria on brushite without copper or zinc of 60\%, but if the coating contained both ions there was almost no bacterial adhesion after 12 h. Coatings with high zinc content and intermediate copper content had the overall best multifunctional properties.},
  language  = {en}
}