Publications by authors named "Gautier A"

Bitter is one of the five basic taste qualities, along with salty, sour, sweet and umami, used by mammals to access the quality of their food and orient their eating behaviour. Bitter taste detection prevents the ingestion of food potentially contaminated by bitter-tasting toxins. Bitter taste perception is mediated by a family of G protein-coupled receptors (GPCRs) called TAS2Rs.

View Article and Find Full Text PDF

Aim: To develop processes for the development of decentralised clinical trial methodology for Aotearoa New Zealand, focussing on equity of access to cancer clinical trials for Māori, Pacific people, vulnerable communities and those in rural settings.

Methods: A national steering committee supported by Te Aho o Te Kahu - Cancer Control Agency was formed to: guide the adaptation and implementation of overseas decentralised clinical trial models to suit the needs of Aotearoa New Zealand with an equity focus; provide high-level oversight and expertise for direction and development of policies, procedures and infrastructure compliant with ICH GCP R2; and implement a national strategy.

Results: Twelve standard operating procedures were developed, as well as a supervision plan and a glossary.

View Article and Find Full Text PDF
Article Synopsis
  • - Membrane contact sites (MCSs) help organelles coordinate activities, but their small size and dynamic nature make them hard to study with traditional imaging methods.
  • - Researchers developed chemogenetic reporters that enhance the imaging of MCSs in both lab and living systems, enabling the exploration of complex biological questions.
  • - They introduced a new biosensor, PRINCESS, which can detect MCSs and measure calcium dynamics simultaneously, revealing a mechanism where calcium signaling affects the positioning of the endoplasmic reticulum and mitochondria.
View Article and Find Full Text PDF
Article Synopsis
  • - Metabolic dysfunction-associated steatotic liver disease (MASLD) is prevalent among obese individuals and shows differences between sexes. A study sought to create a noninvasive blood test using mid-infrared (MIR) metabolic fingerprinting to diagnose metabolic dysfunction-associated steatohepatitis (MASH) in those with severe obesity.
  • - The study involved 382 patients undergoing bariatric surgery, with liver biopsies assessed to establish a scoring algorithm based on MIR spectroscopy. In women, MASH was diagnosed in 14.3% of cases, showing high sensitivity (86%) and specificity (81%) for correctly identifying the condition.
  • - For men, the test's performance was notably less effective, with a MASH diagnosis
View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the effectiveness and safety of using a 3D computational model fused with real-time fluoroscopy to guide left atrial appendage closure (LAAC) for patients with non-valvular atrial fibrillation.
  • The research included 106 patients who underwent the procedure, achieving a 100% success rate for device implantation and meeting primary efficacy criteria in 89% of cases.
  • The approach was deemed safe, with only 1.9% of patients experiencing major complications, suggesting that this technique could enhance LAAC outcomes.
View Article and Find Full Text PDF

The decontamination of polluted soils is a major socioeconomic issue in many industrialized countries. In situ remediation approaches are nowadays preferred to ex situ techniques, but they require among others the use of bioindicators, which are sensitive to the progressive depollution on health effects. Animal species have been mainly used so far to monitor aquatic and air pollution.

View Article and Find Full Text PDF

Background: Multidisciplinary functional restoration programs (FRPs) aim to improve pain and function in people with chronic low back pain (CLBP). The intensity and content of FRPs varies; the benefits of one program over another are unclear.

Objective: To assess changes in trunk muscle strength and endurance after an intensive (IFRP) (for people on sick leave for >6 months with high levels of fear-avoidance beliefs about physical activity and work) or semi-intensive (SIFRP) (for people working) FRP in people with CLBP.

View Article and Find Full Text PDF

Aims: Omalizumab is an anti-immunoglobulin E (IgE) monoclonal antibody that was first approved by the United States (US) Food and Drug Administration (FDA) for the treatment of allergic asthma in 2003. The pivotal trials supporting the initial approval of omalizumab used dosing determined by patient's baseline IgE and body weight, with the goal of reducing the mean free IgE level to approximately 25 ng/mL or less. While the underlying parameters supporting the dosing table remained the same, subsequent studies and analyses have resulted in approved alternative versions of the dosing table, including the European Union (EU) asthma dosing table, which differs in weight bands and maximum allowable baseline IgE and omalizumab dose.

View Article and Find Full Text PDF

An 86-year-old woman was managed for a non-ST-segment elevation myocardial infarction. Coronary angiography revealed significant stenoses at the left anterior descending, left ostial circumflex (LCX), obtuse first marginal, and a Medina 1.0.

View Article and Find Full Text PDF

Fluorescence lifetime imaging microscopy (FLIM) opens new dimensions for highly multiplexed imaging in live cells and organisms using differences in fluorescence lifetime to distinguish spectrally identical fluorescent probes. Here, a set of fluorescence-activating and absorption-shifting tags (FASTs) capable of modulating the fluorescence lifetime of embedded fluorogenic 4-hydroxybenzylidene rhodanine (HBR) derivatives is described. It is shown that changes in the FAST protein sequence can vary the local environment of the chromophore and lead to significant changes in fluorescence lifetime.

View Article and Find Full Text PDF

Background: Despite major advances in prevention and treatment, cardiovascular diseases - particularly acute myocardial infarction - remain a leading cause of death worldwide and in France. Collecting contemporary data about the characteristics, management and outcomes of patients with acute myocardial infarction in France is important.

Aims: The main objectives are to describe baseline characteristics, contemporary management, in-hospital and long-term outcomes of patients with acute myocardial infarction hospitalized in tertiary care centres in France; secondary objectives are to investigate determinants of prognosis (including periodontal disease and sleep-disordered breathing), to identify gaps between evidence-based recommendations and management and to assess medical care costs for the index hospitalization and during the follow-up period.

View Article and Find Full Text PDF

Protein-protein interactions (PPIs) can be detected through selective complementation of split fluorescent reporters made of two complementary fragments that reassemble into a functional fluorescent reporter when in close proximity. We previously introduced splitFAST, a chemogenetic PPI reporter with rapid and reversible complementation. Here, we present the engineering of splitFAST2, an improved reporter displaying higher brightness, lower self-complementation, and higher dynamic range for optimal monitoring of PPI using an original protein engineering strategy that exploits proteins with orthology relationships.

View Article and Find Full Text PDF

Lipophorin is an essential, highly expressed lipid transport protein that is secreted and circulates in insect hemolymph. We hijacked the gene to make it co-express a single-chain version of antibody 2A10, which binds sporozoites of the malaria parasite . The resulting transgenic mosquitoes show a markedly decreased ability to transmit expressing the circumsporozoite protein to mice.

View Article and Find Full Text PDF
Article Synopsis
  • * Despite its prevalence, vasospastic angina is often underdiagnosed, and specific tests to identify it are not frequently conducted due to inconsistent protocols.
  • * The French Coronary Atheroma and Interventional Cardiology Group (GACI) released a position paper focusing on the criteria and protocols for conducting provocative tests to better diagnose and understand vasospastic angina.
View Article and Find Full Text PDF

Optical protein sensors that enable detection of relevant biomolecules of interest play central roles in biological research. Coupling fluorescent reporters with protein sensing units has enabled the development of a wide range of biosensors that recognize analytes with high selectivity. In these sensors, analyte recognition induces a conformational change in the protein sensing unit that can modulate the optical signal of the fluorescent reporter.

View Article and Find Full Text PDF

Background: This study describes the evolution of vaccination acceptability and associated determinants in the French general population between 2000 and 2021, and vaccinations with the highest vaccine hesitancy between 2010 and 2021.

Methods: Data were collected from the nine national 'Health Barometer' cross-sectional surveys conducted between 2000 and 2021. These surveys included French-speaking individuals aged 18-75 years old who were selected through randomly generated landline and mobile phone numbers.

View Article and Find Full Text PDF

Molecular tools enabling the control and observation of the proximity of proteins are essential for studying the functional role of physical distance between two proteins. Here we present CATCHFIRE (chemically assisted tethering of chimera by fluorogenic-induced recognition), a chemically induced proximity technology with intrinsic fluorescence imaging and sensing capabilities. CATCHFIRE relies on genetic fusion to small dimerizing domains that interact upon addition of fluorogenic inducers of proximity that fluoresce upon formation of the ternary assembly, allowing real-time monitoring of the chemically induced proximity.

View Article and Find Full Text PDF

Background And Aims: Data on new-onset atrial fibrillation (NOAF) in patients with chronic coronary syndromes (CCS) are scarce. This study aims to describe the incidence, predictors, and impact on cardiovascular (CV) outcomes of NOAF in CCS patients.

Methods: Data from the international (45 countries) CLARIFY registry (prospeCtive observational LongitudinAl RegIstry oF patients with stable coronary arterY disease) were used.

View Article and Find Full Text PDF

Background: Cardiovascular diseases (CVDs), being the culprit for one-third of deaths globally, constitute a challenge for biomedical instrumentation development, especially for early disease detection. Pulsating arterial blood flow, providing access to cardiac-related parameters, involves the whole body. Unobtrusive and continuous acquisition of electrical bioimpedance (EBI) and photoplethysmography (PPG) constitute important techniques for monitoring the peripheral arteries, requiring novel approaches and clever means.

View Article and Find Full Text PDF

Owing to their inherent capacity to make invisible biological processes visible and quantifiable, fluorescent reporter systems have numerous applications in biotechnology. For classical fluorescent protein systems (i.e.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the best timing for performing percutaneous coronary interventions (PCI) in patients undergoing transcatheter aortic valve implantation (TAVI), a procedure for severe aortic stenosis with existing coronary artery disease (CAD).
  • An analysis of 1,603 patients from the REVASC-TAVI registry shows that performing PCI after TAVI leads to better 2-year clinical outcomes, with significantly lower rates of all-cause death and major complications compared to PCI before or concurrently with TAVI.
  • The findings suggest that scheduling PCI after TAVI may be more beneficial, but further confirmation through randomized clinical trials is needed.
View Article and Find Full Text PDF

The access to cupola-like or tube-like structures from - and -arylopeptoid macrocycles was explored through CuAAC reaction using a partially flexible bis(azide) and Cu-N-heterocyclic carbene as catalyst. NMR studies showed that a bis-triazolium bicylic compound in the -series adopts well-defined structure in polar aprotic and protic solvents. Besides, preliminary study revealed its potential for oxoanion recognition.

View Article and Find Full Text PDF
Article Synopsis
  • A variety of protein tags enable precise tracking and localization of proteins within cells, enhanced by combining them with polarity-sensitive fluorescent probes for deeper insights into protein environments in organelles.
  • Researchers designed three fluorescent probes using solvatochromic nile red dye linked to HaloTag, with one probe (NR12-Halo) successfully labeling various proteins across key cell compartments, distinguishing between apolar lipid membranes and other proteins.
  • This method revealed important dynamics in protein environments during their lifecycle and how factors like mechanical stress and dietary fats influence protein behavior and interactions within cellular structures.
View Article and Find Full Text PDF