Michael Osthoff

ORCID: 0000-0001-5439-957X
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About
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Research Areas
  • Complement system in diseases
  • Antibiotics Pharmacokinetics and Efficacy
  • SARS-CoV-2 and COVID-19 Research
  • Bacterial Identification and Susceptibility Testing
  • Pneumonia and Respiratory Infections
  • Antimicrobial Resistance in Staphylococcus
  • COVID-19 Clinical Research Studies
  • Antibiotic Use and Resistance
  • Biosensors and Analytical Detection
  • Respiratory viral infections research
  • Sepsis Diagnosis and Treatment
  • SARS-CoV-2 detection and testing
  • Antibiotic Resistance in Bacteria
  • Renal Diseases and Glomerulopathies
  • Nosocomial Infections in ICU
  • Cytomegalovirus and herpesvirus research
  • Antifungal resistance and susceptibility
  • Pneumocystis jirovecii pneumonia detection and treatment
  • Infective Endocarditis Diagnosis and Management
  • Drug-Induced Adverse Reactions
  • Systemic Lupus Erythematosus Research
  • Fungal Infections and Studies
  • Patient Satisfaction in Healthcare
  • Urinary Tract Infections Management
  • Bacterial Infections and Vaccines

University Hospital of Basel
2016-2025

University of Basel
2013-2024

Kantonsspital Winterthur
2023-2024

Hospital Base
2022-2023

Faculty (United Kingdom)
2023

Kantonsspital Aarau
2022

Kantonsspital Baselland
2022

International Society for Infectious Diseases
2016

Swiss National Science Foundation
2016

The University of Melbourne
2013-2015

ABSTRACT Ceftazidime-avibactam (CAZ-AVI) is a recently approved β-lactam–β-lactamase inhibitor combination with the potential to treat serious infections caused by carbapenem-resistant organisms. Few patients such were included in CAZ-AVI clinical trials, and experience lacking. We present case series of Enterobacteriaceae (CRE) or Pseudomonas aeruginosa (CRPa) who treated salvage therapy on compassionate-use basis. Physicians had prescribed completed report form. used descriptive statistics...

10.1128/aac.01964-16 article EN Antimicrobial Agents and Chemotherapy 2016-11-29

Extended-spectrum beta-lactamase-expressing Gram-negative bacilli (ESBL-GNB) now commonly cause community-acquired infections, including urinary tract infections (UTI), and represent a challenge for practitioners in choosing empirical antibiotics. The aim of this study was to describe the epidemiology clinical characteristics UTIs/bacteriuria due ESBL-GNB Australia.At single-site tertiary referral hospital, 100 cases with were matched where caused by organisms matching ESBL bacterial species...

10.1016/j.ijid.2015.03.006 article EN cc-by-nc-nd International Journal of Infectious Diseases 2015-03-10

Abstract Objectives SARS-CoV-2 may cause acute lung injury, and secondary infections are thus relevant complications in patients with COVID-19 pneumonia. However, detailed information on community- hospital-acquired among pneumonia is scarce. Methods We identified 220 SARS-CoV-2-positive hospitalized at the University Hospital Basel, Switzerland (between 25 February 31 May 2020). excluded who declined general consent ( n = 12), without clinical evidence of 29), for < 24 h 17). evaluated...

10.1186/s40560-021-00526-y article EN cc-by Journal of Intensive Care 2021-01-18

A dysregulated immune response with hyperinflammation is observed in patients severe coronavirus disease 2019 (COVID-19). The aim of the present study was to assess safety and potential benefits human recombinant C1 esterase inhibitor (conestat alfa), a complement, contact activation kallikrein-kinin system regulator, COVID-19. Patients evidence progressive after 24 h including an oxygen saturation <93% at rest ambient air were included University Hospital Basel, Switzerland April 2020....

10.3389/fimmu.2020.02072 article EN cc-by Frontiers in Immunology 2020-08-14

Early detection, standardized therapy, adequate infrastructure and strategies for quality improvement should constitute essential components of every hospital's sepsis plan. To investigate the extent to which recommendations from guidelines are implemented availability care patients with in acute hospitals. A multidisciplinary cross-sectional questionnaire was used This included use definitions, implementation guideline recommendations, diagnostic therapeutic infrastructure, antibiotic...

10.1164/rccm.202406-1167oc article EN American Journal of Respiratory and Critical Care Medicine 2025-01-09

Background The Mannose-binding lectin (MBL) pathway of complement plays a pivotal role in the pathogenesis ischemia/reperfusion (I/R) injury after experimental ischemic stroke. As comparable data human stroke are limited, we investigated more detail association MBL deficiency with infarction volume and functional outcome large cohort patients receiving intravenous thrombolysis or conservative treatment. Methodology/Principal Findings In post hoc analysis prospective study, admission...

10.1371/journal.pone.0021338 article EN cc-by PLoS ONE 2011-06-21

Coronavirus disease 2019 (COVID-19) leads to inflammatory cytokine release, which can downregulate the expression of metabolizing enzymes. This cascade affects drug concentrations in plasma. We investigated association between lopinavir (LPV) and hydroxychloroquine (HCQ) plasma levels acute-phase inflammation marker C-reactive protein (CRP). LPV 92 patients hospitalized at our institution were prospectively collected. Lopinavir-ritonavir was administered every 12 hours, 800/200 mg on day 1...

10.1128/aac.01177-20 article EN Antimicrobial Agents and Chemotherapy 2020-07-09

The first case of SARS-CoV-2 in Basel, Switzerland was detected on February 26 th 2020. We present a phylogenetic study to explore viral introduction and evolution during the exponential early phase local COVID-19 outbreak from until March 23 rd . sequenced naso-oropharyngeal swabs 746 positive tests that were performed at University Hospital Basel period. successfully generated 468 high quality genomes unique patients called variants with our Pipeline (COVGAP), analysed genetic diversity...

10.1371/journal.ppat.1009374 article EN cc-by PLoS Pathogens 2021-03-19

Abstract Autoantibodies against complement C1q (anti-C1q) are frequently found in patients with systemic lupus erythematosus (SLE). They strongly correlate the occurrence of severe nephritis, suggesting a pathogenic role SLE. Because anti-C1q known to recognize neoepitope on bound C1q, but not fluid-phase aim this study was clarify origin by determining mechanism that renders antigenic. We investigated from serum and purified total IgG SLE hypocomplementemic urticarial vasculitis as well two...

10.4049/jimmunol.0803573 article EN The Journal of Immunology 2009-08-01

10.1016/j.cmi.2020.08.013 article EN publisher-specific-oa Clinical Microbiology and Infection 2020-08-18
Kai-Manuel Adam Michael Osthoff Frédéric Lamoth Anna Conen Véronique Erard and 95 more Katia Boggian Peter W. Schreiber Stefan Zimmerli Pierre‐Yves Bochud Dionysios Neofytos Mapi Fleury Hans Fankhauser Daniel Goldenberger Konrad Mühlethaler Arnaud Riat Reinhard Zbinden Andreas Kronenberg Chantal Quiblier Oscar Marchetti Nina Khanna Thomas Bregenzer Anna Conen Kai-Manuel Adam Anna Conen Ursula Flückiger Nina Khanna Christina Orasch Ulrich Heininger Mario Franciolli Ospedale San Giovanni Lauro Damonti Stefan Zimmerli Madeleine Rothen Claudine Zellweger Madeleine Rothen Philip Tarr Felix Fleisch Christian Chuard Véronique Erard Stéphane Emonet Jorge Garbino Dionysios Neofytos Christian van Delden Daniel Genné Pierre‐Yves Bochud Thierry Calandra Lauro Damonti Véronique Erard Frédéric Lamoth Oscar Marchetti Christina Orasch Jean‐Philippe Chave Clinique Bois-Cerf Clinique Cécil Clinique La Source Peter Gräber R Monotti Ospedale Regionale Enos Bernasconi Ospedale Civico Marco Rossi Martín Krause Rein-Jan Piso Frank Bally Nicolas Troillet Katia Boggian Gerhard Eich Jacques Gubler Jan Fehr Alexander Imhof Christian Ruef Peter W. Schreiber Gerhard Eich Jacques Gubler Christoph Berger Hans Fankhauser I Heinzer Daniel Goldenberger Reno Frei Roland Hertel Marisa Dolina Orlando Petrini Olivier Dubuis Konrad Mühlethaler Suzanne Graf Martin Risch Eva Ritzler Dominique Fracheboud Arnaud Riat Peter Rohner Jacques Schrenzel Reto Lienhardt Jacques Billé Frédéric Lamoth Corinne Andreutti-Zaugg Alberto Gallusser Suzanne Graf Gaby E. Pfyffer Karin Herzog Urs Schibli

The increasing incidence of candidemia and emergence drug-resistant Candida species are major concerns worldwide. Long-term surveillance studies needed.The Fungal Infection Network Switzerland (FUNGINOS) conducted a 15-year (2004-2018), nationwide, epidemiological study candidemia. Hospital-based candidemia, distribution, antifungal susceptibility, consumption were stratified in 3 periods (2004-2008, 2009-2013, 2014-2018). Population-based over the period 2009-2018 derived from Swiss...

10.1093/ofid/ofab471 article EN cc-by-nc-nd Open Forum Infectious Diseases 2021-09-17

A variety of antiviral treatments for COVID-19 have been investigated, involving many repurposed drugs. Currently, the SARS-CoV-2 RNA-dependent RNA polymerase (RdRp, encoded by nsp12-nsp7-nsp8) has targeted numerous inhibitors, e.g., remdesivir, only provisionally approved treatment to-date, although clinical impact these interventions remains inconclusive. However, potential emergence resistance poses a threat to efficacy any successful therapies on wide scale. Here, we propose framework...

10.3390/microorganisms9051094 article EN cc-by Microorganisms 2021-05-19

Autoantibodies against C1q strongly correlate with the occurrence of severe nephritis in patients systemic lupus erythematosus (SLE). We undertook this study to determine whether identification epitope(s) recognized by these autoantibodies might lead a better diagnostic assay and help elucidate putative role anti-C1q SLE.SLE patient-derived Fab were used microarray-based peptide scan identify sequence anti-C1q. Anti-C1q binding target was further analyzed using real-time interaction...

10.1002/art.34605 article EN Arthritis & Rheumatism 2012-06-27

Cytomegalovirus (CMV) retinitis is a major cause of visual impairment and blindness among patients with uncontrolled HIV infections. Whereas polymorphisms in interferon-lambda 3 (IFNL3, previously named IL28B) strongly influence the clinical course hepatitis C, few studies examined role such infections due to viruses other than C virus.To analyze association newly identified IFNL3/4 variant rs368234815 susceptibility CMV-associated cohort HIV-infected patients.This retrospective longitudinal...

10.1097/qad.0000000000000379 article EN AIDS 2014-06-29

We report an imported case of louse-borne relapsing fever in a young adult Eritrean refugee who presented with shortly after arriving Switzerland. Analysis blood smears revealed spirochetes identified as Borrelia recurrentis by 16S rRNA gene sequencing. believe that may be seen more frequently Europe consequence recent increase refugees from East Africa travelling to under poor hygienic conditions confined spaces.

10.2807/1560-7917.es2015.20.32.21204 article EN cc-by Eurosurveillance 2015-08-13

Abstract Objectives Detecting severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) is key to the clinical and epidemiological assessment of CoVID‐19. We cross‐validated manual automated high‐throughput testing for SARS‐CoV‐2‐RNA, evaluated SARS‐CoV‐2 loads in nasopharyngeal–oropharyngeal swabs (NOPS), lower fluids, plasma, analyzed detection rates after lockdown relaxation measures. Methods Basel‐S‐gene, Roche‐E‐gene, Roche‐cobas®6800‐Target1 Target2 were prospectively validated 1344...

10.1002/jmv.26731 article EN Journal of Medical Virology 2020-12-14
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