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Concept

Concentration minimale inhibitrice

Publications associées (18)

Accurate and rapid antibiotic susceptibility testing using a machine learning-assisted nanomotion technology platform

Sandor Kasas, Anthony Vocat

Antimicrobial resistance (AMR) is a major public health threat, reducing treatment options for infected patients. AMR is promoted by a lack of access to rapid antibiotic susceptibility tests (ASTs). Accelerated ASTs can identify effective antibiotics for t ...

Nature Portfolio2024

Bactericidal effect of tetracycline in E. coli strain ED1a may be associated with ribosome dysfunction

Camille Véronique Bernadette Goemans, Christian Eugen Zimmerli

Ribosomes translate the genetic code into proteins. Recent technical advances have facilitated in situ structural analyses of ribosome functional states inside eukaryotic cells and the minimal bacterium Mycoplasma. However, such analyses of Gram-negative b ...

Nature Research2024

Homogeneous vs. heterogeneous photo-Fenton elimination of antibiotic-resistant bacteria bearing intracellular or extracellular resistance: Do resistance mechanisms interfere with disinfection pathways?

César Pulgarin, Stefanos Giannakis

The present study aimed to fill the knowledge gap between the implications of intracellular and extracellular antibiotic resistance mechanisms may inflict on the inactivation pathways of the photo-Fenton process under mild conditions. It was thus designed ...

Elsevier Sci Ltd2024

Antimicrobial susceptibility testing with integrated photonic crystal optical tweezers

Nicolas Villa

The abusive use of antimicrobial drugs during the last eighty years has favoured the natural selection of resistant pathogens able to neutralise drugs efficiently. Nowadays, antimicrobial resistance contributes to millions of deaths yearly, threatens the e ...

EPFL2023

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

Microfluidic Platforms for the Study of Bacterial Metabolism and Antimicrobial Susceptibility Testing

Yang Liu

Fast spreading antimicrobial resistance (AMR) is an emerging major public health issue. New therapeutic and diagnostic paradigms must be implemented to counteract this evolution. In this respect, fast antimicrobial susceptibility testing (AST) plays an imp ...

EPFL2021

Irreversible inactivation of carbapenem-resistant Klebsiella pneumoniae and its genes in water by photo-electro-oxidation and photo-electro-Fenton- Processes action modes

César Pulgarin

Carbapenem-resistant Klebsiella pneumoniae is a critical priority pathogen according to the World Health Organization's classification. Effluents of municipal wastewater treatment plants (EWWTP) may be a route for K. pneumoniae dissemination. Herein, the i ...

ELSEVIER2021

Fast antimicrobial susceptibility testing onEscherichia coliby metabolic heat nanocalorimetry

Martinus Adela Maria Gijs, Thomas Lehnert, Yang Liu

Fast spreading of antimicrobial resistance is now considered a major global health threat. New technologies are required, enabling rapid diagnostics of bacterial infection combined with fast antimicrobial susceptibility testing (AST) for evaluating the eff ...

2020

Development of an AFM-based nanomotion detection device for microbiological samples

Wojciech Chomicki

The main goals of this thesis pertain to the development of a device capable of detecting microorganism viability through monitoring the oscillations of a microscopic cantilever transducer, to improve the presently used device and to attempt to explain in ...

EPFL2019

Detection of bacteria

Hubert Girault, Andreas Stephan Lesch, Horst Pick, Milica Jovic, Yingdi Zhu

A method for bacteria detection and the assessment of the antimicrobial susceptibility profile uses a bacterial viability assay based on combining a highly efficient affinity bacteria enrichment/ separation with an electrochemical redox interrogation measu ...

2019

Mass Spectrometry Methods for Bacterial Infection Diagnosis and Cancer Analysis

Yingdi Zhu

Matrix-assisted laser desorption/ionisation (MALDI) time-of-flight (TOF) mass spectrometry is an important analytical tool in chemistry and biology. Bearing the advantages of easy-to-use, fast measurements and relatively simple data interpretation, MALDI-T ...

EPFL2019

Single-cell division and killing dynamics of bacteria exposed to isocratic and time-dependent concentrations of antibiotic

Katrin Esther Schneider

Antibiotic resistance, defined as the ability of a bacteria to survive an antibiotic drug to which it was initially sensitive, has become increasingly worrying. While the discovery of antibiotics is considered to be one of the most important of all biomedi ...

EPFL2018

Nanomechanical sensor applied to blood culture pellets: a fast approach to determine the antibiotic susceptibility against agents of bloodstream infections

Giovanni Dietler, Sandor Kasas, Giovanni Longo, Petar Stupar

Objectives: The management of bloodstream infection, a life-threatening disease, largely relies on early detection of infecting microorganisms and accurate determination of their antibiotic susceptibility to reduce both mortality and morbidity. Recently we ...

2017

Single-Cell Tracking Reveals Antibiotic-Induced Changes in Mycobacterial Energy Metabolism

John McKinney, Muhittin Emre Özdemir, Zeljka Maglica

ATP is a key molecule of cell physiology, but despite its importance, there are currently no methods for monitoring single-cell ATP fluctuations in live bacteria. This is a major obstacle in studies of bacterial energy metabolism, because there is a growin ...

American Society for Microbiology2015

Implementation and Characterization of Dynamic Genetic Networks in Vitro

Henrike Marie Niederholtmeyer

Transcription and translation (TX-TL) can be performed in vitro, outside of cells, allowing the assembly and analysis of genetic networks. This approach to engineering biological networks in a less complex and more controllable environment could one day al ...

EPFL2015

Biogrout propagation in soils

Lyesse Laloui

Microbial Induced Calcite Precipitation (MICP) is an innovative technique for soil grouting in which injected bacteria supplemented with chemicals lead to calcite precipitation in soils. A comprehensive research work is carried out to better understand and ...

Springer-Verlag2011

A novel drug discovery concept for tuberculosis: inhibition of bacterial and host cell signalling

Stewart Cole, Edina Rita Székely

The Mycobacterium tuberculosis genome encodes for eleven eukaryotic-like Ser/Thr protein kinases. At least three of these (PknA, PknB and PknG) are essential for bacterial growth and survival. PknG is secreted by pathogenic mycobacteria, in macrophages to ...

2008

Mechanisms of pathogen entry through the endosomal compartments

Françoise Gisou van der Goot Grunberg

Several pathogens - bacteria, viruses and parasites - must enter mammalian cells for survival, replication and immune-system evasion. These pathogens generally make use of existing cellular pathways that are designed for nutrient uptake, receptor downregul ...

2006