0000000000008054

AUTHOR

Stefan Niemann

0000-0002-6604-0684

showing 5 related works from this author

Mycobacterium tuberculosiscomplex lineage 5 exhibits high levels of within-lineage genomic diversity and differing gene content compared to the type …

2020

AbstractPathogens of theMycobacterium tuberculosiscomplex (MTBC) are considered monomorphic, with little gene content variation between strains. Nevertheless, several genotypic and phenotypic factors separate the different MTBC lineages (L), especially L5 and L6 (traditionally termedMycobacterium africanum), from each other. However, genome variability and gene content especially of L5 and L6 strains have not been fully explored and may be potentially important for pathobiology and current approaches for genomic analysis of MTBC isolates, including transmission studies.We compared the genomes of 358 L5 clinical isolates (including 3 completed genomes and 355 Illumina WGS (whole genome seque…

Genetics0303 health sciencesLineage (genetic)030306 microbiologySequence assemblySingle-nucleotide polymorphismBiologybiology.organism_classificationGenome3. Good health03 medical and health sciencesMycobacterium tuberculosis complexGeneMycobacterium africanum030304 developmental biologyReference genome
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Phylogenomics of Mycobacterium africanum reveals a new lineage and a complex evolutionary history.

2021

Coscolla et al.

0301 basic medicineEvolutionmycobacteriaLineage (evolution)030106 microbiologyPopulation610 Medicine & healthSystems Microbiology: Large-scale comparative genomicsGenomediversityMycobacterium tuberculosisEvolution Molecular03 medical and health sciences360 Social problems & social servicesPhylogenomicsevolutionDrug Resistance BacterialHumansTuberculosiseducationgenomePhylogeny030304 developmental biology0303 health scienceseducation.field_of_studyGenetic diversityDiversityGenomeMycobacterium africanumbiologyWhole Genome Sequencing030306 microbiologyMycobacteriaHigh-Throughput Nucleotide SequencingGeneral MedicineMycobacterium tuberculosisAfrica Easternbiology.organism_classification3. Good healthPhylogeographyAfrica WesternPhylogeography030104 developmental biologyMycobacterium tuberculosis complexEvolutionary biologyMycobacterium africanumGenome BacterialResearch Article
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Reference set of Mycobacterium tuberculosis clinical strains: A tool for research and product development

2018

TheMycobacterium tuberculosiscomplex (MTBC) causes tuberculosis (TB) in humans and various other mammals. The human-adapted members of the MTBC comprise seven phylogenetic lineages that differ in their geographical distribution. There is growing evidence that this phylogenetic diversity modulates the outcome of TB infection and disease. For decades, TB research and development has focused on the two canonical MTBC reference strains H37Rv and Erdman, both of which belong to Lineage 4. Relying on only a few laboratory-adapted strains can be misleading as study results might not be directly transferrable to clinical settings where patients are infected with a diverse array of strains, includin…

Bacterial DiseasesResearch FacilitiesExtensively Drug-Resistant TuberculosisLineage (evolution)DiseaseAnimal PhylogeneticsMedicine and Health SciencesPhylogenyData Management0303 health sciencesGeographyPhylogenetic treeStrain (biology)QRGenomics3. Good healthActinobacteriaPhylogeneticsPhylogeographyInfectious DiseasesBiogeographyMycobacterium tuberculosis complexMedicineResearch LaboratoriesResearch ArticleComputer and Information SciencesTuberculosisTuberculosiScienceBiologyResearch and Analysis MethodsMycobacterium tuberculosis03 medical and health sciencesGenomic MedicineGeneticsmedicineTuberculosisHumansEvolutionary SystematicsTaxonomy030304 developmental biologyEvolutionary BiologyPopulation BiologyBacteria030306 microbiologyEcology and Environmental SciencesOrganismsBiology and Life SciencesGenetic VariationMycobacterium tuberculosisTropical Diseasesbiology.organism_classificationmedicine.diseaseGenòmicaPhylogenetic diversityEvolutionary biologyEarth SciencesZoologyPopulation Genetics
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Mycobacterium tuberculosis complex lineage 5 exhibits high levels of within-lineage genomic diversity and differing gene content compared to the type…

2021

Pathogens of theMycobacterium tuberculosiscomplex (MTBC) are considered to be monomorphic, with little gene content variation between strains. Nevertheless, several genotypic and phenotypic factors separate strains of the different MTBC lineages (L), especially L5 and L6 (traditionally termedMycobacterium africanum) strains, from each other. However, this genome variability and gene content, especially of L5 strains, has not been fully explored and may be important for pathobiology and current approaches for genomic analysis of MTBC strains, including transmission studies. By comparing the genomes of 355 L5 clinical strains (including 3 complete genomes and 352 Illumina whole-genome sequenc…

0301 basic medicineLineage (genetic)Genotype030106 microbiologySequence assemblyPathogens and Epidemiologylineage 5Genomegenomic diversity03 medical and health sciencesSpecies SpecificityDrug Resistance Multiple BacterialGenotypeHumansTuberculosisH37RvBiologyGeneResearch Articlesreference genomewithin-lineage variabilityGeneticsWhole Genome SequencingbiologyChromosome MappingGenetic VariationHigh-Throughput Nucleotide SequencingMycobacterium tuberculosisSequence Analysis DNAgene presence/absenceGeneral Medicinebiology.organism_classification030104 developmental biologyL5.3.2Mycobacterium tuberculosis complexM. africanumHuman medicineMycobacterium africanumGenome BacterialReference genomeMicrobial Genomics
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Sulcus implantation of a single-piece foldable acrylic intraocular lens after posterior capsular rupture in cataract surgery.

2012

Purpose. To evaluate the safety of a foldable acrylic single-piece intraocular lens (IOL) in cases of complicated cataract surgery and sulcus implantation. The setting was University and private anterior segment surgery practices. Methods. In this observational case series study, 13 eyes of 13 patients were included after complicated phacoemulsification with extensive posterior capsule rupture with or without vitreous loss. A foldable acrylic single-piece IOL (Rayner Superflex 620H; Rayner Intraocular Lenses Limited, Hove, East Sussex, UK) was implanted in the ciliary sulcus in each eye. Postoperative follow-up included best-corrected visual acuity, anterior segment biomicroscopy, IOL centr…

Malemedicine.medical_specialtyIntraocular pressureVisual acuitygenetic structuresmedicine.medical_treatmentAcrylic ResinsVisual AcuityIntraocular lensFundus (eye)PupilPostoperative ComplicationsLens Implantation IntraocularOphthalmologymedicineHumansIntraocular PressureAgedAged 80 and overLenses IntraocularPhacoemulsificationbusiness.industryGeneral MedicinePhacoemulsificationCataract surgerySulcusMiddle AgedPosterior Capsular Rupture Oculareye diseasesSurgeryOphthalmologymedicine.anatomical_structureFemalesense organsmedicine.symptombusinessEuropean journal of ophthalmology
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