Alexander Platzer

ORCID: 0000-0002-2318-8806
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About
Contact & Profiles
Research Areas
  • Rheumatoid Arthritis Research and Therapies
  • Bioinformatics and Genomic Networks
  • Metabolomics and Mass Spectrometry Studies
  • Systemic Lupus Erythematosus Research
  • RNA Research and Splicing
  • Microbial Metabolic Engineering and Bioproduction
  • interferon and immune responses
  • Photosynthetic Processes and Mechanisms
  • Monoclonal and Polyclonal Antibodies Research
  • Genomics and Phylogenetic Studies
  • Viral Infections and Immunology Research
  • Histone Deacetylase Inhibitors Research
  • Lymphoma Diagnosis and Treatment
  • Image and Video Quality Assessment
  • Microbial Community Ecology and Physiology
  • Chromosomal and Genetic Variations
  • Plant Reproductive Biology
  • Protein Degradation and Inhibitors
  • Plant and animal studies
  • Cancer, Hypoxia, and Metabolism
  • Plant Molecular Biology Research
  • Mycotoxins in Agriculture and Food
  • Machine Learning in Bioinformatics
  • Cytokine Signaling Pathways and Interactions
  • Wheat and Barley Genetics and Pathology

Medical University of Vienna
2017-2022

Center for Rheumatology
2019

Austrian Academy of Sciences
2013-2018

Gregor Mendel Institute of Molecular Plant Biology
2012-2018

Vienna Biocenter
2016-2017

University of Vienna
2007-2016

Forschungszentrum Telekommunikation Wien
2011

University Medical Center Freiburg
2010

University of Potsdam
2009

Max Planck Institute of Molecular Plant Physiology
2009

Protein secretion systems play a key role in the interaction of bacteria and hosts. EffectiveDB (http://effectivedb.org) contains pre-calculated predictions bacterial secreted proteins intact systems. Here we describe major update database, which was previously featured NAR Database Issue. bundles various tools to recognize Type III signals, conserved binding sites chaperones, IV peptides, eukaryotic-like domains subcellular targeting signals host. Beyond analysis arbitrary protein sequence...

10.1093/nar/gkv1269 article EN cc-by Nucleic Acids Research 2015-11-20

In plants, gametogenesis occurs late in development, and somatic mutations can therefore be transmitted to the next generation. Longer periods of growth are believed result an increase number cell divisions before gametogenesis, with a concomitant arising due replication errors. However, there is little experimental evidence addressing how many occur gametogenesis. Here, we measured loss telomeric DNA accumulation errors Arabidopsis short long life spans determine replications lineages...

10.1073/pnas.1609686113 article EN Proceedings of the National Academy of Sciences 2016-10-11

Recent evidence suggests that metabolic changes play a pivotal role in the biology of cancer and particular renal cell carcinoma (RCC). Here, global metabolite profiling approach was applied to characterize pool RCC normal tissue. Advanced decision tree models were signature explore features metastasized tumours. The findings validated second independent dataset. Vitamin E derivates metabolites glucose, fatty acid, inositol phosphate metabolism determined profile RCC. α-tocopherol, hippuric...

10.1111/j.1582-4934.2009.00939.x article EN Journal of Cellular and Molecular Medicine 2009-10-20

Abstract Background Analyzing differential-gene-expression data in the context of protein-interaction networks (PINs) yields information on functional cellular status. PINs can be formally represented as graphs, and approximating undirected graphs allows network properties to characterized using well-established graph measures. This paper outlines features derived from 29 studies differential gene expression cancer. For each study number differentially regulated genes was determined used a...

10.1186/1471-2105-8-224 article EN cc-by BMC Bioinformatics 2007-06-27

Quality of Experience (QoE) has gained enormous attention during the recent years. So far, most existing QoE research focused on audio and video streaming applications, although HTTP traffic carries majority in residential broadband Internet. However, models for this domain do not consider temporal dynamics or historical experiences user's satisfaction while consuming a certain service. This psychological influence factor past experience is referred to as memory effect. The first...

10.5555/2043468.2043485 article EN International Teletraffic Congress 2011-09-06

Single Nucleotide Polymorphisms (SNPs) are one of the largest sources new data in biology. In most papers, SNPs between individuals visualized with Principal Component Analysis (PCA), an older method for this purpose.

10.1371/journal.pone.0056883 article EN cc-by PLoS ONE 2013-02-15

Anti-citrullinated protein antibodies (ACPA) and rheumatoid factor (RF) are the most commonly used diagnostic markers of arthritis (RA). These predominantly IgM or IgG isotype. Other subtypes both – particularly IgA isotypes- other autoantibodies such as RA33 have been repeatedly reported but their value has still not fully elucidated. Here, we investigated prevalence IgA, RF, ACPA in patients with RA. To determine specificity sensitivity sera from 290 RA (165 early 125 established disease),...

10.3389/fimmu.2018.00876 article EN cc-by Frontiers in Immunology 2018-04-24

Rheumatoid arthritis (RA) is an autoimmune disease characterized by persistent synovial inflammation. The major drivers of inflammation are cytokines and chemokines. Among these molecules, TNF activates fibroblast-like synoviocytes (FLSs), which leads to the production inflammatory mediators. Here, we show that regulates expression transcription factor interferon regulatory 1 (IRF1) in human FLSs as well a transgenic mouse model. Transcriptomic analyses IRF1-deficient, TNF-stimulated define...

10.1038/s12276-019-0267-6 article EN cc-by Experimental & Molecular Medicine 2019-07-01

Although the transition to selfing in model plant Arabidopsis thaliana involved loss of self-incompatibility (SI) system, it clearly did not occur due fixation a single inactivating mutation at locus determining specificities SI (the S-locus). At least three groups divergent haplotypes (haplogroups), corresponding ancient functional S-alleles, have been maintained this locus, and extensive studies shown that all carry distinct mutations. However, historical process is well understood,...

10.1093/molbev/msx122 article EN cc-by-nc Molecular Biology and Evolution 2017-04-04

Mycotoxins are secondary metabolites produced by certain fungi, posing significant health risks to humans and animals through contaminated food feed. These consequently the mycotoxins which they produce, strongly influenced weather, this shifts over time due climate change, leading more frequent severe events, such as heat waves, storms, heavy rainfall. This study investigates how long-term weather trends climatic factors impacted mycotoxin levels in corn samples a 17-year period (2006-2022)...

10.3390/toxins17020077 article EN cc-by Toxins 2025-02-08

Due to the accelerating uptake of mobile broadband services, Quality Experience (QoE) assessment and optimization for wireless networks has become a topic vital importance. In this field, subjective quality evaluation methods based on MOS (Mean Opinion Score) are most widely used approaches understanding measuring perceived performance. However, while these have been proven reliably quantify users' degrees satisfaction, they do not sufficiently address following important question: "Which...

10.1109/icc.2011.5963220 article EN 2011-06-01

Experimental high-throughput analysis of molecular networks is a central approach to characterize the adaptation plant metabolism environment. However, recent studies have demonstrated that it hardly possible predict in situ metabolic phenotypes from experiments under controlled conditions, such as growth chambers or greenhouses. This particularly due high variance samples induced by environmental fluctuations. An functional metabolome interpretation field would be desirable order able...

10.3389/fpls.2018.01556 article EN cc-by Frontiers in Plant Science 2018-11-06

Transposable elements (TEs) are common mobile DNA present in nearly all genomes. Since the movement of TEs within a genome can sometimes have phenotypic consequences, an accurate report TE actions is desirable. To this end, we developed TE-Locate, computational tool that uses paired-end reads to identify novel locations known TEs. TE-Locate utilize either database sequences, or annotated reference sequence interest. This makes useful search for any sequence, including retrotransposed gene...

10.3390/biology1020395 article EN cc-by Biology 2012-09-12

TNF-induced activation of fibroblast-like synoviocytes (FLS) is a critical determinant for synovial inflammation and joint destruction in RA. The detrimental role TNF-receptor 1 (TNFR1) has thoroughly been characterized. contributions TNFR2, however, are largely unknown. This study was performed to delineate the TNFR2 human FLS activation.TNFR2 expression tissue samples determined by immunohistochemistry. Expression silenced using RNAi or CRISPR/Cas9 technologies. Global transcriptional...

10.1093/rheumatology/keac124 article EN Lara D. Veeken 2022-03-04

Abstract Objectives To develop and test the reliability of a new semiquantitative scoring system for assessment cartilage changes by ultrasound in web-based exercise as well patient patients with RA. Methods A taskforce Outcome Measures Rheumatology Ultrasound Working Group performed systematic literature review on US RA, followed Delphi survey system, finally exercise. For exercise, members scored dataset anonymized static images MCP joints RA healthy controls, which also contained...

10.1093/rheumatology/kez153 article EN Lara D. Veeken 2019-03-29

Abstract Metagenomics provides quantitative measurements for microbial species over time. To obtain a global overview of an experiment and to explore the full potential given dataset, intuitive interactive visualization tools are needed. Therefore, we established BioSankey visualize in microbiome studies time as Sankey diagram. These diagrams embedded into project-specific webpage which depends only on JavaScript Google API allow searches interesting without requiring web server or...

10.1515/jib-2017-0063 article EN cc-by Berichte aus der medizinischen Informatik und Bioinformatik/Journal of integrative bioinformatics 2018-06-13

The era of next-generation sequencing has mounted the foundation many gene expression studies. In rheumatoid arthritis research, this led to discovery important candidate genes which offered novel insights into mechanisms and their possible roles in cure disease. last years, data generation outstripped analysis while studies focused on specific aspects disease, a global picture disease is not yet accomplished. Here, we analyzed compared collection information from healthy individuals...

10.1371/journal.pone.0219698 article EN cc-by PLoS ONE 2019-07-25

Abstract Motivation: The rapidly growing number of available prokaryotic genome sequences requires fully automated and high-quality software solutions for their initial re-annotation. Here we present ConsPred, a annotation framework that performs intrinsic gene predictions, homology searches, predictions non-coding genes as well CRISPR repeats integrates all evidence into consensus annotation. ConsPred achieves comprehensive, annotations based on rules priorities, similar to decision-making...

10.1093/bioinformatics/btw393 article EN Bioinformatics 2016-07-04

Wheat represents one of the most widely consumed cereals worldwide. Cultivated in winter and spring, it is vulnerable to an array different pathogens, including fungi, which are managed largely through in-field application fungicides. During this study, a 4-year field investigation (2018–2021) was performed France, aiming assess efficacy fungicide treatment reduce mycotoxin contamination common durum wheat. Several commercially available fungicides were applied via sprayers. Concentrations...

10.3390/toxins15070443 article EN cc-by Toxins 2023-07-04

Identification of trajectories radiographic damage in rheumatoid arthritis (RA) by clustering patients according to the shape their curve Sharp-van der Heijde scores (SHSs) over time. Developing models predict progression cluster from baseline characteristics.Patient-level data a 2-year period five large randomised controlled trials on tumour necrosis factor inhibitors RA were used. SHSs clustered shape-respecting manner identify distinct clusters progression. Characteristics within...

10.1136/annrheumdis-2021-220331 article EN Annals of the Rheumatic Diseases 2021-08-10
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