Zimmermann, Ortrud

[["dc.bibliographiccitation.artnumber","2087"],["dc.bibliographiccitation.journal","Frontiers in Microbiology"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Emele, Matthias F."],["dc.contributor.author","Joppe, Felix M."],["dc.contributor.author","Riedel, Thomas"],["dc.contributor.author","Overmann, Jörg"],["dc.contributor.author","Rupnik, Maja"],["dc.contributor.author","Cooper, Paul"],["dc.contributor.author","Kusumawati, R. Lia"],["dc.contributor.author","Berger, Fabian K."],["dc.contributor.author","Laukien, Friederike"],["dc.contributor.author","Zimmermann, Ortrud"],["dc.contributor.author","Bohne, Wolfgang"],["dc.contributor.author","Groß, Uwe"],["dc.contributor.author","Bader, Oliver"],["dc.contributor.author","Zautner, Andreas E."],["dc.date.accessioned","2019-09-24T08:07:22Z"],["dc.date.available","2019-09-24T08:07:22Z"],["dc.date.issued","2019"],["dc.description.abstract","Clostridioides difficile, a Gram-positive spore-forming bacterium, is the leading cause of nosocomial diarrhea worldwide and therefore a substantial burden to the healthcare system. During the past decade, hypervirulent PCR-ribotypes (RT) e.g., RT027 or RT176 emerged rapidly all over the world, associated with both, increased severity and mortality rates. It is thus of great importance to identify epidemic strains such as RT027 and RT176 as fast as possible. While commonly used diagnostic methods, e.g., multilocus sequence typing (MLST) or PCR-ribotyping, are time-consuming, proteotyping offers a fast, inexpensive, and reliable alternative solution. In this study, we established a MALDI-TOF-based typing scheme for C. difficile. A total of 109 ribotyped strains representative for five MLST clades were analyzed by MALDI-TOF. MLST, based on whole genome sequences, and PCR-ribotyping were used as reference methods. Isoforms of MS-detectable biomarkers, typically ribosomal proteins, were related with the deduced amino acid sequences and added to the C. difficile proteotyping scheme. In total, we were able to associate nine biomarkers with their encoding genes and include them in our proteotyping scheme. The discriminatory capacity of the C. difficile proteotyping scheme was mainly based on isoforms of L28-M (2 main isoforms), L35-M (4 main isoforms), and S20-M (2 main isoforms) giving rise to at least 16 proteotyping-derived types. In our test population, five of these 16 proteotyping-derived types were detected. These five proteotyping-derived types did not correspond exactly to the included five MLST-based C. difficile clades, nevertheless the subtyping depth of both methods was equivalent. Most importantly, proteotyping-derived clade B contained only isolates of the hypervirulent RT027 and RT176. Proteotyping is a stable and easy-to-perform intraspecies typing method and a promising alternative to currently used molecular techniques. It is possible to distinguish the group of RT027 and RT176 isolates from non-RT027/non-RT176 isolates using proteotyping, providing a valuable diagnostic tool."],["dc.identifier.doi","10.3389/fmicb.2019.02087"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16398"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62451"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1664-302X"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Proteotyping of Clostridioides difficile as Alternate Typing Method to Ribotyping Is Able to Distinguish the Ribotypes RT027 and RT176 From Other Ribotypes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","6"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Antimicrobial Chemotherapy"],["dc.bibliographiccitation.lastpage","10"],["dc.bibliographiccitation.volume","74"],["dc.contributor.author","Schwanbeck, Julian"],["dc.contributor.author","Riedel, Thomas"],["dc.contributor.author","Laukien, Friederike"],["dc.contributor.author","Schober, Isabel"],["dc.contributor.author","Oehmig, Ines"],["dc.contributor.author","Zimmermann, Ortrud"],["dc.contributor.author","Overmann, Jörg"],["dc.contributor.author","Groß, Uwe"],["dc.contributor.author","Zautner, Andreas E."],["dc.contributor.author","Bohne, Wolfgang"],["dc.date.accessioned","2020-08-06T06:17:51Z"],["dc.date.available","2020-08-06T06:17:51Z"],["dc.date.issued","2019"],["dc.description.abstract","The identification and characterization of clinical Clostridioides difficile isolates with reduced fidaxomicin susceptibility."],["dc.identifier.doi","10.1093/jac/dky375"],["dc.identifier.pmid","30247587"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/67529"],["dc.language.iso","en"],["dc.relation.eissn","1460-2091"],["dc.relation.issn","0305-7453"],["dc.title","Characterization of a clinical Clostridioides difficile isolate with markedly reduced fidaxomicin susceptibility and a V1143D mutation in rpoB"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","BMC Genomics"],["dc.bibliographiccitation.lastpage","14"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Groß, Uwe"],["dc.contributor.author","Brzuszkiewicz, Elzbieta B."],["dc.contributor.author","Gunka, Katrin"],["dc.contributor.author","Starke, Jessica"],["dc.contributor.author","Riedel, Thomas"],["dc.contributor.author","Bunk, Boyke"],["dc.contributor.author","Spröer, Cathrin"],["dc.contributor.author","Wetzel, Daniela"],["dc.contributor.author","Poehlein, Anja"],["dc.contributor.author","Chibani, Cynthia"],["dc.contributor.author","Bohne, Wolfgang"],["dc.contributor.author","Overmann, Jörg"],["dc.contributor.author","Zimmermann, Ortrud"],["dc.contributor.author","Daniel, Rolf"],["dc.contributor.author","Liesegang, Heiko"],["dc.date.accessioned","2019-07-09T11:45:11Z"],["dc.date.available","2019-07-09T11:45:11Z"],["dc.date.issued","2018"],["dc.description.abstract","BACKGROUND: Clostridioides difficile infections (CDI) have emerged over the past decade causing symptoms that range from mild, antibiotic-associated diarrhea (AAD) to life-threatening toxic megacolon. In this study, we describe a multiple and isochronal (mixed) CDI caused by the isolates DSM 27638, DSM 27639 and DSM 27640 that already initially showed different morphotypes on solid media. RESULTS: The three isolates belonging to the ribotypes (RT) 012 (DSM 27639) and 027 (DSM 27638 and DSM 27640) were phenotypically characterized and high quality closed genome sequences were generated. The genomes were compared with seven reference strains including three strains of the RT 027, two of the RT 017, and one of the RT 078 as well as a multi-resistant RT 012 strain. The analysis of horizontal gene transfer events revealed gene acquisition incidents that sort the strains within the time line of the spread of their RTs within Germany. We could show as well that horizontal gene transfer between the members of different RTs occurred within this multiple infection. In addition, acquisition and exchange of virulence-related features including antibiotic resistance genes were observed. Analysis of the two genomes assigned to RT 027 revealed three single nucleotide polymorphisms (SNPs) and apparently a regional genome modification within the flagellar switch that regulates the fli operon. CONCLUSION: Our findings show that (i) evolutionary events based on horizontal gene transfer occur within an ongoing CDI and contribute to the adaptation of the species by the introduction of new genes into the genomes, (ii) within a multiple infection of a single patient the exchange of genetic material was responsible for a much higher genome variation than the observed SNPs."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2018"],["dc.identifier.doi","10.1186/s12864-017-4368-0"],["dc.identifier.pmid","29291715"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15054"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59178"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.intern","In goescholar not merged with http://resolver.sub.uni-goettingen.de/purl?gs-1/15123 but duplicate"],["dc.notes.status","final"],["dc.relation.issn","1471-2164"],["dc.rights","CC BY 4.0"],["dc.rights.access","openAccess"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","570"],["dc.title","Comparative genome and phenotypic analysis of three Clostridioides difficile strains isolated from a single patient provide insight into multiple infection of C. difficile."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","1843"],["dc.bibliographiccitation.journal","Frontiers in Microbiology"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Seugendo, Mwanaisha"],["dc.contributor.author","Janssen, Iryna"],["dc.contributor.author","Lang, Vanessa"],["dc.contributor.author","Hasibuan, Irene"],["dc.contributor.author","Bohne, Wolfgang"],["dc.contributor.author","Cooper, Paul"],["dc.contributor.author","Daniel, Rolf"],["dc.contributor.author","Gunka, Katrin"],["dc.contributor.author","Kusumawati, R. L."],["dc.contributor.author","Mshana, Stephen E."],["dc.contributor.author","von Müller, Lutz"],["dc.contributor.author","Okamo, Benard"],["dc.contributor.author","Ortlepp, Jan R."],["dc.contributor.author","Overmann, Jörg"],["dc.contributor.author","Riedel, Thomas"],["dc.contributor.author","Rupnik, Maja"],["dc.contributor.author","Zimmermann, Ortrud"],["dc.contributor.author","Groß, Uwe"],["dc.date.accessioned","2019-07-09T11:45:47Z"],["dc.date.available","2019-07-09T11:45:47Z"],["dc.date.issued","2018"],["dc.description.abstract","Clostridioides (Clostridium) difficile infections (CDI) are considered worldwide as emerging health threat. Uptake of C. difficile spores may result in asymptomatic carrier status or lead to CDI that could range from mild diarrhea, eventually developing into pseudomembranous colitis up to a toxic megacolon that often results in high mortality. Most epidemiological studies to date have been performed in middle- and high income countries. Beside others, the use of antibiotics and the composition of the microbiome have been identified as major risk factors for the development of CDI. We therefore postulate that prevalence rates of CDI and the distribution of C. difficile strains differ between geographical regions depending on the regional use of antibiotics and food habits. A total of 593 healthy control individuals and 608 patients suffering from diarrhea in communities in Germany, Ghana, Tanzania and Indonesia were selected for a comparative multi-center cross-sectional study. The study populations were screened for the presence of C. difficile in stool samples. Cultured C. difficile strains (n = 84) were further subtyped and characterized using PCR-ribotyping, determination of toxin production, and antibiotic susceptibility testing. Prevalence rates of C. difficile varied widely between the countries. Whereas high prevalence rates were observed in symptomatic patients living in Germany and Indonesia (24.0 and 14.7%), patients from Ghana and Tanzania showed low detection rates (4.5 and 6.4%). Differences were also obvious for ribotype distribution and toxin repertoires. Toxin A+/B+ ribotypes 001/072 and 078 predominated in Germany, whereas most strains isolated from Indonesian patients belonged to toxin A+/B+ ribotype SLO160 and toxin A-/B+ ribotype 017. With 42.9-73.3%, non-toxigenic strains were most abundant in Africa, but were also found in Indonesia at a rate of 18.2%. All isolates were susceptible to vancomycin and metronidazole. Mirroring the antibiotic use, however, moxifloxacin resistance was absent in African C. difficile isolates but present in Indonesian (24.2%) and German ones (65.5%). This study showed that CDI is a global health threat with geographically different prevalence rates which might reflect distinct use of antibiotics. Significant differences for distributions of ribotypes, toxin production, and antibiotic susceptibilities were observed."],["dc.identifier.doi","10.3389/fmicb.2018.01843"],["dc.identifier.pmid","30131799"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15318"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59311"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1664-302X"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","610"],["dc.title","Prevalence and Strain Characterization of Clostridioides (Clostridium) difficile in Representative Regions of Germany, Ghana, Tanzania and Indonesia - A Comparative Multi-Center Cross-Sectional Study"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","566"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Genome Biology and Evolution"],["dc.bibliographiccitation.lastpage","577"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Riedel, Thomas"],["dc.contributor.author","Neumann-Schaal, Meina"],["dc.contributor.author","Wittmann, Johannes"],["dc.contributor.author","Schober, Isabel"],["dc.contributor.author","Hofmann, Julia Danielle"],["dc.contributor.author","Lu, Chia-Wen"],["dc.contributor.author","Dannheim, Antonia"],["dc.contributor.author","Zimmermann, Ortrud"],["dc.contributor.author","Lochner, Matthias"],["dc.contributor.author","Groß, Uwe"],["dc.contributor.author","Overmann, Jörg"],["dc.contributor.editor","Hershberg, Ruth"],["dc.date.accessioned","2021-04-14T08:26:40Z"],["dc.date.available","2021-04-14T08:26:40Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1093/gbe/evaa072"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82037"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1759-6653"],["dc.title","Characterization of Clostridioides difficile DSM 101085 with A−B−CDT+ Phenotype from a Late Recurrent Colonization"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Microbial Genomics"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Frentrup, Martinique"],["dc.contributor.author","Zhou, Zhemin"],["dc.contributor.author","Steglich, Matthias"],["dc.contributor.author","Meier-Kolthoff, Jan P."],["dc.contributor.author","Göker, Markus"],["dc.contributor.author","Riedel, Thomas"],["dc.contributor.author","Bunk, Boyke"],["dc.contributor.author","Spröer, Cathrin"],["dc.contributor.author","Overmann, Jörg"],["dc.contributor.author","Blaschitz, Marion"],["dc.contributor.author","Indra, Alexander"],["dc.contributor.author","von Müller, Lutz"],["dc.contributor.author","Kohl, Thomas A."],["dc.contributor.author","Niemann, Stefan"],["dc.contributor.author","Seyboldt, Christian"],["dc.contributor.author","Klawonn, Frank"],["dc.contributor.author","Kumar, Nitin"],["dc.contributor.author","Lawley, Trevor D."],["dc.contributor.author","García-Fernández, Sergio"],["dc.contributor.author","Cantón, Rafael"],["dc.contributor.author","del Campo, Rosa"],["dc.contributor.author","Zimmermann, Ortrud"],["dc.contributor.author","Groß, Uwe"],["dc.contributor.author","Achtman, Mark"],["dc.contributor.author","Nübel, Ulrich"],["dc.date.accessioned","2021-04-14T08:24:13Z"],["dc.date.available","2021-04-14T08:24:13Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1099/mgen.0.000410"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81205"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","2057-5858"],["dc.title","A publicly accessible database for Clostridioides difficile genome sequences supports tracing of transmission chains and epidemics"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","311"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","International Journal of Medical Microbiology"],["dc.bibliographiccitation.lastpage","320"],["dc.bibliographiccitation.volume","307"],["dc.contributor.author","Riedel, Thomas"],["dc.contributor.author","Wetzel, Daniela"],["dc.contributor.author","Hofmann, Julia Danielle"],["dc.contributor.author","Plorin, Simon Paul Erich Otto"],["dc.contributor.author","Dannheim, Henning"],["dc.contributor.author","Berges, Mareike"],["dc.contributor.author","Zimmermann, Ortrud"],["dc.contributor.author","Bunk, Boyke"],["dc.contributor.author","Schober, Isabel"],["dc.contributor.author","Spröer, Cathrin"],["dc.contributor.author","Liesegang, Heiko"],["dc.contributor.author","Jahn, Dieter"],["dc.contributor.author","Overmann, Jörg"],["dc.contributor.author","Groß, Uwe"],["dc.contributor.author","Neumann-Schaal, Meina"],["dc.date.accessioned","2020-12-10T14:24:37Z"],["dc.date.available","2020-12-10T14:24:37Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1016/j.ijmm.2017.05.007"],["dc.identifier.issn","1438-4221"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/72302"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","High metabolic versatility of different toxigenic and non-toxigenic Clostridioides difficile isolates"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]