Publications by authors named "Francois J"

Article Synopsis
  • The Parque Nacional La Campana was found to have a rich microbial diversity in its soil, with a study focused on areas with sclerophyllous forests and xerophytic shrublands.
  • Variation in microbial communities was influenced more by different vegetation types and soil conditions on opposing slopes rather than just the soil depth itself.
  • Key microbial taxa differed significantly between the two environments, with specific fungi and bacteria thriving in each, indicating the impact of the local ecosystem on microbial life and functions.
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Intercellular communication via extracellular vesicles (EVs) has been identified as a vital component of a steadily expanding number of physiological and pathological processes. To accommodate these roles, EVs have highly heterogeneous molecular compositions. Given that surface molecules on EVs determine their interactions with their environment, EV functionality likely differs between subpopulations with varying surface compositions.

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There is solid consensus among physicists and philosophers that, in gauge field theory, for a quantity to be physically meaningful or real, it must be gauge-invariant. Yet, every "elementary" field in the Standard Model of particle physics is actually gauge-variant. This has led a number of researchers to insist that new manifestly gauge-invariant approaches must be established.

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Cardiac resynchronization therapy (CRT) has revolutionized heart failure (HF) management, offering benefits in morbidity, mortality, and symptom alleviation. However, optimal response rates are not universally achieved, necessitating enhanced patient-selection strategies. Myocardial scar patterns, quantified by delayed-enhancement cardiac magnetic resonance (DE-CMR), have been implicated in CRT outcomes.

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The master regulator of the DNA damage response, the transcription factor p53, orchestrates multiple downstream responses and coordinates repair processes. In response to double-strand DNA breaks, p53 exhibits pulses of expression, but how it achieves temporal coordination of downstream responses remains unclear. Here, we show that p53's posttranslational modification state is altered between its first and second pulses of expression.

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Objective: To evaluate the performance of ultrasound at 36 weeks of gestation for screening fetal macrosomia according to the criteria of the randomized "DAME" trial.

Method: Retrospective observational study over 2 years in a type 3 maternity hospital. The primary outcome was birth weight above the 97th percentile on Audipog birth weight curves.

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Article Synopsis
  • The study discusses the effective and selective synthesis of iminosugars, specifically 1,4-dideoxy-1,4-imino-D-arabinitol (DAB) and lentiginosine, focusing on their seven stereoisomers.
  • The starting material for these syntheses is 4-benzoyl-6-deoxy-6-iodoglycopyranosides, yielding between 38% to 68% for DAB and between 44% to 89% for lentiginosine.
  • A key highlight of the process is a complex multistep reaction involving zinc-mediated reductive elimination, reductive amination, and intramolecular nucleophilic substitution, which allows for the
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The study of microorganism interactions is important for understanding the organization and functioning of microbial consortia. Additionally, the interaction between yeast and bacteria is of interest in the field of health and nutrition area for the development of probiotics. To investigate these microbial interactions at the cellular and molecular levels, a simple, reliable, and quantitative method is proposed.

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2,4-dihydroxybutyric acid (DHB) and 2-keto-4-hydroxybutyrate (OHB) are non-natural molecules obtained through synthetic pathways from renewable carbon source. As they are structurally similar to lactate and pyruvate respectively, they could possibly interfere with the metabolic network of Escherichia coli. In fact, we showed that DHB can be easily oxidized by the membrane associated L and D-lactate dehydrogenases encoded by lldD, dld and ykgF into OHB, and the latter being cleaved into pyruvate and formaldehyde by several pyruvate-dependent aldolases, with YagE being the most effective.

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Background: Entrustable Professional Activities (EPAs) have become a cornerstone for an increasing number of competency-based medical education programs. Today, frameworks of EPAs are being used in most, if not all, medical specialties. These frameworks can break a discipline down to its constituting tasks, and structure the training and evaluation of residents.

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Article Synopsis
  • Parque Nacional La Campana (PNLC) is famous for its diverse plant and animal life, but this study focused on examining the lesser-known microbial communities present in its ecosystems.
  • Researchers analyzed soil samples from different plant types found in PNLC, like sclerophyllous and xerophytic forests, using advanced DNA sequencing techniques to identify microbial composition.
  • The study revealed specific microbial communities linked to various plant ecosystems, highlighting that factors like elevation and soil type significantly influence the diversity and structure of microbes in the park.
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Right sided posterior diaphragmatic hernias are a rare diagnosis, especially in adult populations. This patient presented with right thoracic pain for 20 years before investigation. Imaging has provided an accurate diagnosis in this case.

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The borrowing hydrogen methodology (BH) has emerged as a powerful tool for the rapid construction of C-C bonds, offering a greener alternative to traditional multi-step syntheses. This methodology involves the activation of inactivated alcohols followed by condensation or aldolization, ultimately leading to the regeneration of the saturated product. Herein, we report the -alkylation of a hindered ketone with challenging secondary saturated heterocyclic alcohols.

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Article Synopsis
  • * Significant fluctuations in the consumption of these sugars were observed as early as the 50th generation, which were not solely due to the emergence of low-consumption clones but instead linked to variations in the number of gene copies responsible for sugar assimilation.
  • * The findings suggest that while the yeast shows some genetic and metabolic instability, these issues could potentially worsen in more extreme industrial conditions, negatively impacting production efficiency.
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Exercise-induced ventricular tachycardia undergoes ischemia evaluation; however, it is important to identify idiopathic ventricular tachycardia in patients with concomitant coronary artery disease and radiofrequency ablations can be lifesaving. We report a case of exercise-induced right and left ventricular outflow tract ventricular tachycardia in a patient with triple vessel coronary artery disease.

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Background: In chronic mental illness, noncompliance with treatment significantly worsens the illness course and outcomes for patients. Considering that nearly 1 billion people worldwide experience mental health issues, including 1 of 5 Canadians in any given year, finding tools to lower noncompliance in these populations is critical for health care systems. A promising avenue is apps that make mental health services more accessible to patients.

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Dermatophytosis is a superficial fungal infection with an ever-increasing number of patients. Culture-based mycology remains the most commonly used diagnosis, but it takes around four weeks to identify the causative agent. Therefore, routine clinical laboratories need rapid, high throughput, and accurate species-specific analytical methods for diagnosis and therapeutic management.

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Introduction: Although ablation of typical atrial flutter (AFL) can be easily achieved with radiofrequency energy (RF), no studies compare the effectiveness of different ablation catheters. Our study aimed to compare the efficacy of various types of ablation catheters in treating typical AFL.

Methods: We analyzed patients with AFL who underwent RF ablation by a single operator at our institution.

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Non-conventional yeast species, or non- yeasts, are increasingly recognized for their involvement in fermented foods. Many of them exhibit probiotic characteristics that are mainly due to direct contacts with other cell types through various molecular components of their cell wall. The biochemical composition and/or the molecular structure of the cell wall components are currently considered the primary determinant of their probiotic properties.

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BRASH syndrome involves the chain of events resulting from the collective effects of radycardia, enal failure, trioventricular (AV)-nodal blockade, hock, and yperkalemia. BRASH syndrome can rapidly progress to cardiac arrest. Early recognition is crucial.

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The essential sulphur-containing amino acid, methionine, is becoming a mass-commodity product with an annual production that exceeded 1,500,000 tons in 2018. This amino acid is today almost exclusively produced by chemical process from fossil resources. The environmental problems caused by this industrial process, and the expected scarcity of oil resources in the coming years, have recently accelerated the development of bioprocesses for producing methionine from renewable carbon feedstock.

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Quadricuspid aortic valve (QAV) is a very rare congenital abnormality. Here, we present a rare case of QAV incidentally noted in a patient at an advanced age during transthoracic echocardiography (TTE). A 73-year-old man with a history of hypertension, hyperlipidemia, diabetes, and treated prostate cancer was admitted to the hospital with palpitations.

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This paper estimates the intratemporal elasticity of substitution (IES) between private and public consumption in private utility. Using panel data for 17 European countries over 1970-2018, we estimate the IES to lie between 0.6 and 0.

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BACKGROUND The use of amniotic membranes for corneal perforations using different surgical techniques has been widely described in the literature. This case report is a novel variation in the technique that can be useful for incorporating in clinical practice when the need arises. CASE REPORT A 36-year-old male patient presented to our clinic with a corneal ulcer in his left eye caused by herpetic keratitis, treated with a topical non-steroidal anti-inflammatory (indomethacin 0.

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When evolution leads to differences in body size, organs generally scale along. A well-known example of the tight relationship between organ and body size is the scaling of mammalian molar teeth. To investigate how teeth scale during development and evolution, we compared molar development from initiation through final size in the mouse and the rat.

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