Möbius, Wiebke

[["dc.bibliographiccitation.artnumber","012001"],["dc.bibliographiccitation.journal","Journal of Physics. Conference Series"],["dc.bibliographiccitation.volume","849"],["dc.contributor.author","Töpperwien, Mareike"],["dc.contributor.author","Krenkel, Martin"],["dc.contributor.author","Ruhwedel, Torben"],["dc.contributor.author","Möbius, Wiebke"],["dc.contributor.author","Pacureanu, A."],["dc.contributor.author","Cloetens, Peter"],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2020-03-11T09:13:55Z"],["dc.date.available","2020-03-11T09:13:55Z"],["dc.date.issued","2017"],["dc.description.abstract","We present propagation-based phase-contrast tomography of mouse sciatic nerves stained with osmium, leading to an enhanced contrast in the myelin sheath around the axons, in order to visualize the threedimensional (3D) structure of the nerve. We compare different experimental parameters and show that contrast and resolution are high enough to identify single axons in the nerve, including characteristic functional structures such as Schmidt-Lanterman incisures."],["dc.identifier.doi","10.1088/1742-6596/849/1/012001"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/63293"],["dc.language.iso","en"],["dc.relation.issn","1742-6588"],["dc.relation.issn","1742-6596"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.rights","CC BY 3.0"],["dc.subject.gro","x-ray imaging"],["dc.subject.gro","biomedical tomography"],["dc.title","Phase-contrast tomography of sciatic nerves: image quality and experimental parameters"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","6586"],["dc.bibliographiccitation.issue","29"],["dc.bibliographiccitation.journal","The Journal of Neuroscience"],["dc.bibliographiccitation.lastpage","6596"],["dc.bibliographiccitation.volume","38"],["dc.contributor.author","Weil, Marie-Theres"],["dc.contributor.author","Heibeck, Saskia"],["dc.contributor.author","Töpperwien, Mareike"],["dc.contributor.author","tom Dieck, Susanne"],["dc.contributor.author","Ruhwedel, Torben"],["dc.contributor.author","Salditt, Tim"],["dc.contributor.author","Rodicio, María C."],["dc.contributor.author","Morgan, Jennifer R."],["dc.contributor.author","Nave, Klaus-Armin"],["dc.contributor.author","Möbius, Wiebke"],["dc.contributor.author","Werner, Hauke B."],["dc.date.accessioned","2020-12-10T18:42:35Z"],["dc.date.available","2020-12-10T18:42:35Z"],["dc.date.issued","2018"],["dc.description.abstract","In the nervous system, myelination of axons enables rapid impulse conduction and is a specialized function of glial cells. Myelinating glia are the last cell type to emerge in the evolution of vertebrate nervous systems, presumably in ancient jawed vertebrates (gnathostomata) because jawless vertebrates (agnathans) lack myelin. We have hypothesized that, in these unmyelinated species, evolutionary progenitors of myelinating cells must have existed that should still be present in contemporary agnathan species. Here, we used advanced electron microscopic techniques to reveal axon-glia interactions in the sea lamprey Petromyzon marinus By quantitative assessment of the spinal cord and the peripheral lateral line nerve, we observed a marked maturation-dependent growth of axonal calibers. In peripheral nerves, all axons are ensheathed by glial cells either in bundles or, when larger than the threshold caliber of 3 μm, individually. The ensheathing glia are covered by a basal lamina and express SoxE-transcription factors, features of mammalian Remak-type Schwann cells. In larval lamprey, the ensheathment of peripheral axons leaves gaps that are closed in adults. CNS axons are also covered to a considerable extent by glial processes, which contain a high density of intermediate filaments, glycogen particles, large lipid droplets, and desmosomes, similar to mammalian astrocytes. Indeed, by in situ hybridization, these glial cells express the astrocyte marker Aldh1l1 Specimens were of unknown sex. Our observations imply that radial sorting, ensheathment, and presumably also metabolic support of axons are ancient functions of glial cells that predate the evolutionary emergence of myelin in jawed vertebrates.SIGNIFICANCE STATEMENT We used current electron microscopy techniques to examine axon-glia units in a nonmyelinated vertebrate species, the sea lamprey. In the PNS, lamprey axons are fully ensheathed either individually or in bundles by cells ortholog to Schwann cells. In the CNS, axons associate with astrocyte orthologs, which contain glycogen and lipid droplets. We suggest that ensheathment, radial sorting, and metabolic support of axons by glial cells predate the evolutionary emergence of myelin in ancient jawed vertebrates."],["dc.identifier.doi","10.1523/JNEUROSCI.1034-18.2018"],["dc.identifier.eissn","1529-2401"],["dc.identifier.issn","0270-6474"],["dc.identifier.pmid","29941446"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/78012"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation.eissn","1529-2401"],["dc.relation.issn","0270-6474"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.subject.gro","biomedical tomography"],["dc.title","Axonal Ensheathment in the Nervous System of Lamprey: Implications for the Evolution of Myelinating Glia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","111130N"],["dc.bibliographiccitation.firstpage","21"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Eckermann, Marina"],["dc.contributor.author","Töpperwien, Mareike"],["dc.contributor.author","Ruhwedel, Torben"],["dc.contributor.author","Möbius, Wiebke"],["dc.contributor.author","Salditt, Tim"],["dc.contributor.editor","Müller-Myhsok, Bertram"],["dc.contributor.editor","Wang, Geng"],["dc.date.accessioned","2020-03-10T15:20:27Z"],["dc.date.available","2020-03-10T15:20:27Z"],["dc.date.issued","2019"],["dc.description.abstract","In the present work, we evaluate and compare the contrast and resolution obtained on different neuronal tissues with propagation-based x-ray phase contrast computed tomography (PB-CT). At our laboratory-based liquid metal-jet setup, we obtain overview datasets at sub-micron resolution of mm3 -sized volumes. In order to evaluate these parameters down to the sub-cellular level, we utilize the synchrotron endstation GINIX at P10, DESY. At this dedicated endstation1 developed and operated by our group, we utilize x-ray waveguide optics for highresolution cone-beam scans at strong geometrical magnification M. Exploiting this multi-scale approach, we investigate the image quality of cerebellum tissue treated by different heavy-metal stains. In addition, we study the electron density contrast in unstained tissues. Different embedding media are utilized depending on the stain, which also significantly affects contrast and image quality. With this work, we want to contribute to an optimized sample preparation to study the neuronal architecture of the brain tissue in greater detail in three dimensions (3d). © (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only."],["dc.identifier.doi","10.1117/12.2528432"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/63286"],["dc.language.iso","en"],["dc.relation.eventend","2019-08-15"],["dc.relation.eventlocation","San Diego, California, United States"],["dc.relation.eventstart","2019-08-11"],["dc.relation.isbn","978-1-5106-2919-6"],["dc.relation.isbn","978-1-5106-2920-2"],["dc.relation.ispartof","Proc. SPIE 11113"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.subject.gro","biomedical tomography"],["dc.title","Evaluation of different heavy-metal stains and embedding media for phase contrast tomography of neuronal tissue"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","7582"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Biomedical Optics Express"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Eckermann, Marina"],["dc.contributor.author","van der Meer, Franziska"],["dc.contributor.author","Cloetens, Peter"],["dc.contributor.author","Ruhwedel, Torben"],["dc.contributor.author","Möbius, Wiebke"],["dc.contributor.author","Stadelmann, Christine"],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2022-01-11T14:06:10Z"],["dc.date.available","2022-01-11T14:06:10Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1364/BOE.434885"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/97842"],["dc.identifier.url","https://mbexc.uni-goettingen.de/literature/publications/362"],["dc.identifier.url","https://sfb1286.uni-goettingen.de/literature/publications/142"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-507"],["dc.relation","EXC 2067: Multiscale Bioimaging"],["dc.relation","SFB 1286: Quantitative Synaptologie"],["dc.relation","SFB 1286 | A02: Bestimmung der Struktur synaptischer Organellen durch Röntgenbeugungs- und Bildgebungsverfahren"],["dc.relation.eissn","2156-7085"],["dc.relation.issn","2156-7085"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.relation.workinggroup","RG Möbius"],["dc.relation.workinggroup","RG Stadelmann-Nessler"],["dc.subject.gro","biomedical tomography"],["dc.title","Three-dimensional virtual histology of the cerebral cortex based on phase-contrast X-ray tomography"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]