Concept

Antibiotique à large spectre

Publications associées (78)

Unravelling the collateral damage of antibiotics on gut bacteria

Antibiotics are used to fight pathogens but also target commensal bacteria, disturbing the composition of gut microbiota and causing dysbiosis and disease1. Despite this well-known collateral damage, the activity spectrum of different antibiotic classes on ...

2021

Microtissue models for studying the dynamics of host-pathogen interactions in the urinary bladder

Kunal Sharma

Urinary tract infections (UTIs) are amongst the most common bacterial infections and are the second-most frequent reason for antibiotic prescriptions. Moreover, in about 25% of all treated cases, recurrence of infection occurs. Uropathogenic Escherichia co ...

EPFL2021

Presence of sub-inhibitory concentrations of quaternary ammonium compounds in water: effects on bacteria and their inactivation by ozone and monochloramine

Margaux Océane Voumard

Disinfection agents have been present in our daily lives for several decades in detergents or in personal care products, where their role is to prevent the spread of pathogenic microor-ganisms. One of the largest class of disinfection agents is quaternary ...

EPFL2021

Scratching the Surface: Bacterial Cell Envelopes at the Nanoscale

Georg Fantner

The bacterial cell envelope is essential for viability, the environmental gatekeeper and first line of defense against external stresses. For most bacteria, the envelope biosynthesis is also the site of action of some of the most important groups of antibi ...

AMER SOC MICROBIOLOGY2020

Modified cyclodextrins as broad-spectrum antivirals

Francesco Stellacci, Natalia Gasilova, Matteo Gasbarri, Valeria Cagno, Samuel Thomas Jones, Matej Janecek

Viral infections kill millions of people and new antivirals are needed. Nontoxic drugs that irreversibly inhibit viruses (virucidal) are postulated to be ideal. Unfortunately, all virucidal molecules described to date are cytotoxic. We recently developed n ...

AMER ASSOC ADVANCEMENT SCIENCE2020

Parietal Structures of Escherichia coli Can Impact the D-Cateslytin Antibacterial Activity

Georg Fantner, Oliver Peric

Bacterial resistance to conventional antibiotics is of major concern. Antimicrobial peptides (AMPs) are considered excellent alternatives. Among them, D-cateslytin (D-Ctl, derivative of a host defense peptide) has shown high efficiency against a broad spec ...

2020

Monitoring Tuberculosis Drug Activity in Live Animals by Using Near-Infrared Fluorescence Imaging

Stewart Cole, Raphael Christopher Sommer

Worldwide, tuberculosis (TB) is the leading cause of death due to infection with a single pathogenic agent, Mycobacterium tuberculosis. In the absence of an effective vaccine, new, more powerful antibiotics are required to halt the growing spread of multid ...

AMER SOC MICROBIOLOGY2019

Photocatalytic degradation of binary and ternary mixtures of antibiotics: reactive species investigation in pilot scale

Sami Rtimi

The present study investigates the photocatalytic degradation of three quinolone antibiotics (i.e., Flumequine (FLU), Oxolinic Acid (OA) and Nalidixic Acid (NA)) in mono-, binary and ternary compound systems. The closed-loop step photo-reactor and TiO2 imp ...

INST CHEMICAL ENGINEERS2019

Enhanced transformation of sulfonamide antibiotics by manganese(IV) oxide in the presence of model humic constituents

Urs von Gunten, Jin Jiang, Jun Ma, Yang Song, Yang Zhou

In this study, a manganese(IV) oxide-mediator (MnO2-mediator) system for the abatement of sulfonamide antibiotics was evaluated. Two simple model humic constituents, syringaldehyde (SA) and acetosyringone (AS), could promote the transformation of sulfonami ...

PERGAMON-ELSEVIER SCIENCE LTD2019

Resistance to disinfection agents: Adaptation of P. aeruginosa to sub inhibitory concentrations of quaternary ammonium compounds (QACs)

Urs von Gunten, Florian Frédéric Vincent Breider, Leonardo Venturelli, Margaux Océane Voumard

Quaternary ammonium compounds (QACs) are among the most used disinfection agents in consumer products and in industrial applications. Because of their poor biodegradabil ity, after use, they will persist in technical and natural aquatic systems at sub - in ...

2019

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