Publications de Leonardo Venturelli

Nanomechanical bio-sensing for fast and reliable detection of viability and susceptibility of microorganisms

Giovanni Dietler, Sandor Kasas, María Inés Villalba, Leonardo Venturelli, Raphaël Foschia

The metabolic activity of living organisms results in cellular motion on a nanometric scale that can be efficiently detected by micro- and nano- fabricated sensors. Quartz crystal microbalance and atomic force microscopy (AFM) inspired techniques have rece ...

2021

Fiber-Tip Polymer Microcantilever for Fast and Highly Sensitive Hydrogen Measurement

Giovanni Dietler, Sandor Kasas, Jiangtao Zhou, Leonardo Venturelli, Yiping Wang, Chaohui Li, Meng Zhu, Cong Xiong

Hydrogen as an antioxidant gas has been widely used in the medical and biological fields for preventing cancer or treating inflammation. However, controlling the hydrogen concentration is crucial for practical use due to its explosive property when its vol ...

AMER CHEMICAL SOC2020

A perspective view on the nanomotion detection of living organisms and its features

Giovanni Dietler, Sandor Kasas, María Inés Villalba, Anne-Céline Verenna Kohler, Giovanni Longo, Petar Stupar, Leonardo Venturelli, Massimiliano Bertacchi

The insurgence of newly arising, rapidly developing health threats, such as drug-resistant bacteria and cancers, is one of the most urgent public-health issues of modern times. This menace calls for the development of sensitive and reliable diagnostic tool ...

WILEY2020

Yeast Nanometric Scale Oscillations Highlights Fibronectin Induced Changes in C. albicans

Giovanni Dietler, Sandor Kasas, Anne-Céline Verenna Kohler, Leonardo Venturelli

Yeast resistance to antifungal drugs is a major public health issue. Fungal adhesion onto the host mucosal surface is still a partially unknown phenomenon that is modulated by several actors among which fibronectin plays an important role. Targeting the ye ...

2020

Adaptation of Pseudomonas aeruginosa to constant sub-inhibitory concentrations of quaternary ammonium compounds

Urs von Gunten, Giovanni Dietler, Sandor Kasas, Florian Frédéric Vincent Breider, Leonardo Venturelli, Myriam Borgatta

Quaternary ammonium compounds (QACs) are widely used in consumer products for disinfection purposes. QACs are frequently detected in aquatic systems at sub-inhibitory concentrations and were found to affect the development of antimicrobial resistance if ba ...

2020

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

A Rapid Unraveling of the Activity and Antibiotic Susceptibility of Mycobacteria

Giovanni Dietler, Sandor Kasas, Giovanni Longo, Leonardo Venturelli

The development of antibiotic-resistant bacteria is a worldwide health-related emergency that calls for new tools to study the bacterial metabolism and to obtain fast diagnoses. Indeed, the conventional analysis time scale is too long and affects our abili ...

AMER SOC MICROBIOLOGY2019

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