@article{MeirKannapinDiefenbacheretal.2021, author = {Meir, Michael and Kannapin, Felix and Diefenbacher, Markus and Ghoreishi, Yalda and Kollmann, Catherine and Flemming, Sven and Germer, Christoph-Thomas and Waschke, Jens and Leven, Patrick and Schneider, Reiner and Wehner, Sven and Burkard, Natalie and Schlegel, Nicolas}, title = {Intestinal epithelial barrier maturation by enteric glial cells is GDNF-dependent}, series = {International Journal of Molecular Sciences}, volume = {22}, journal = {International Journal of Molecular Sciences}, number = {4}, issn = {1422-0067}, doi = {10.3390/ijms22041887}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-258913}, year = {2021}, abstract = {Enteric glial cells (EGCs) of the enteric nervous system are critically involved in the maintenance of intestinal epithelial barrier function (IEB). The underlying mechanisms remain undefined. Glial cell line-derived neurotrophic factor (GDNF) contributes to IEB maturation and may therefore be the predominant mediator of this process by EGCs. Using GFAP\(^{cre}\) x Ai14\(^{floxed}\) mice to isolate EGCs by Fluorescence-activated cell sorting (FACS), we confirmed that they synthesize GDNF in vivo as well as in primary cultures demonstrating that EGCs are a rich source of GDNF in vivo and in vitro. Co-culture of EGCs with Caco2 cells resulted in IEB maturation which was abrogated when GDNF was either depleted from EGC supernatants, or knocked down in EGCs or when the GDNF receptor RET was blocked. Further, TNFα-induced loss of IEB function in Caco2 cells and in organoids was attenuated by EGC supernatants or by recombinant GDNF. These barrier-protective effects were blunted when using supernatants from GDNF-deficient EGCs or by RET receptor blockade. Together, our data show that EGCs produce GDNF to maintain IEB function in vitro through the RET receptor.}, language = {en} } @article{FarmerStrzelczykFinisguerraetal.2021, author = {Farmer, Adam D. and Strzelczyk, Adam and Finisguerra, Alessandra and Gourine, Alexander V. and Gharabaghi, Alireza and Hasan, Alkomiet and Burger, Andreas M. and Jaramillo, Andr{\´e}s M. and Mertens, Ann and Majid, Arshad and Verkuil, Bart and Badran, Bashar W. and Ventura-Bort, Carlos and Gaul, Charly and Beste, Christian and Warren, Christopher M. and Quintana, Daniel S. and H{\"a}mmerer, Dorothea and Freri, Elena and Frangos, Eleni and Tobaldini, Eleonora and Kaniusas, Eugenijus and Rosenow, Felix and Capone, Fioravante and Panetsos, Fivos and Ackland, Gareth L. and Kaithwas, Gaurav and O'Leary, Georgia H. and Genheimer, Hannah and Jacobs, Heidi I. L. and Van Diest, Ilse and Schoenen, Jean and Redgrave, Jessica and Fang, Jiliang and Deuchars, Jim and Sz{\´e}les, Jozsef C. and Thayer, Julian F. and More, Kaushik and Vonck, Kristl and Steenbergen, Laura and Vianna, Lauro C. and McTeague, Lisa M. and Ludwig, Mareike and Veldhuizen, Maria G. and De Couck, Marijke and Casazza, Marina and Keute, Marius and Bikson, Marom and Andreatta, Marta and D'Agostini, Martina and Weymar, Mathias and Betts, Matthew and Prigge, Matthias and Kaess, Michael and Roden, Michael and Thai, Michelle and Schuster, Nathaniel M. and Montano, Nicola and Hansen, Niels and Kroemer, Nils B. and Rong, Peijing and Fischer, Rico and Howland, Robert H. and Sclocco, Roberta and Sellaro, Roberta and Garcia, Ronald G. and Bauer, Sebastian and Gancheva, Sofiya and Stavrakis, Stavros and Kampusch, Stefan and Deuchars, Susan A. and Wehner, Sven and Laborde, Sylvain and Usichenko, Taras and Polak, Thomas and Zaehle, Tino and Borges, Uirassu and Teckentrup, Vanessa and Jandackova, Vera K. and Napadow, Vitaly and Koenig, Julian}, title = {International Consensus Based Review and Recommendations for Minimum Reporting Standards in Research on Transcutaneous Vagus Nerve Stimulation (Version 2020)}, series = {Frontiers in Human Neuroscience}, volume = {14}, journal = {Frontiers in Human Neuroscience}, issn = {1662-5161}, doi = {10.3389/fnhum.2020.568051}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-234346}, year = {2021}, abstract = {Given its non-invasive nature, there is increasing interest in the use of transcutaneous vagus nerve stimulation (tVNS) across basic, translational and clinical research. Contemporaneously, tVNS can be achieved by stimulating either the auricular branch or the cervical bundle of the vagus nerve, referred to as transcutaneous auricular vagus nerve stimulation(VNS) and transcutaneous cervical VNS, respectively. In order to advance the field in a systematic manner, studies using these technologies need to adequately report sufficient methodological detail to enable comparison of results between studies, replication of studies, as well as enhancing study participant safety. We systematically reviewed the existing tVNS literature to evaluate current reporting practices. Based on this review, and consensus among participating authors, we propose a set of minimal reporting items to guide future tVNS studies. The suggested items address specific technical aspects of the device and stimulation parameters. We also cover general recommendations including inclusion and exclusion criteria for participants, outcome parameters and the detailed reporting of side effects. Furthermore, we review strategies used to identify the optimal stimulation parameters for a given research setting and summarize ongoing developments in animal research with potential implications for the application of tVNS in humans. Finally, we discuss the potential of tVNS in future research as well as the associated challenges across several disciplines in research and clinical practice.}, language = {en} }