75 results on '"Lecot P"'
Search Results
2. Descriptive analysis and prognostic factors in cats with myeloma‐related disorders: A multicenter retrospective study of 50 cases
- Author
-
Lorris Lecot, Isabelle Desmas‐Bazelle, Sarah Benjamin, Pauline De Fornel, Frédérique Ponce, Matthew Kornya, Loïc Desquilbet, Claire Beaudu‐Lange, Catherine Ibisch, David Sayag, Ghita Benchekroun, and Jérémy Béguin
- Subjects
cat ,oncology ,plasma cell ,prognosis ,Veterinary medicine ,SF600-1100 - Abstract
Abstract Background Myeloma‐related disorders (MRDs) are rare and poorly documented neoplasms of cats. Hypothesis/Objectives To describe clinical, clinicopathologic, and imaging findings, response to treatment, and survival time and to identify factors associated with shorter outcomes in cats with MRD. Animals Fifty cats with a diagnosis of MRD. Methods Cats with paraproteinemia confirmed by serum protein electrophoresis (SPE) and either intramedullary plasmacytosis >10%, marked cytonuclear atypia with intramedullary plasmacytosis that ranged between 5% and 10%, or cytologically or histologically confirmed visceral infiltration were retrospectively included from several veterinary referral centers. Results Bone marrow plasmacytosis and splenic or hepatic involvement were present in 17/27 cats (63%), 36/42 cats (86%), and 27/38 cats (71%), respectively. Anemia was reported in 33/49 cats (67%) and thrombocytopenia in 16/47 cats (34%). Some of the treatments that the cats received included melphalan and prednisolone (n = 19), cyclophosphamide and prednisolone (n = 10), chlorambucil and prednisolone (n = 4), prednisolone (n = 4), or other (n = 4). The overall response rates to melphalan, cyclophosphamide, and chlorambucil in combination with prednisolone were 87%, 90%, and 100%, respectively. Adverse events to melphalan or cyclophosphamide occurred in 65% and 23% of cats, respectively. Median survival time was 122 days (range, 0‐1403) and was not significantly associated with chemotherapy protocol. Anemia (hazard ratio [HR], 3.1; 95% confidence interval [CI], 1.0‐9.8) and thrombocytopenia (HR, 2.7; 95% CI, 1.2‐6.0) were risk factors for shorter survival. Conclusions and Clinical Importance Our study confirmed the guarded prognosis of MRD in cats and identified risk factors for shorter survival times.
- Published
- 2024
- Full Text
- View/download PDF
3. Prevalence and clinical relevance of cholelithiasis in cats: A multicenter retrospective study of 98 cases
- Author
-
Audrey Brunet, Cyril Duperrier‐Simond, Suzanne Amoyal, Ghita Benchekroun, Juan Hernandez, Lorris Lecot, Thibaut Lurier, Jean‐Luc Cadoré, and Emilie Krafft
- Subjects
cholelith ,hepatobiliary disease ,obstruction ,risk factors ,ultrasonography ,Veterinary medicine ,SF600-1100 - Abstract
Abstract Background Cholelithiasis is an uncommon and mainly incidental finding in dogs; current literature on this topic is scarce in cats. Hypothesis Report prevalence, clinical presentation, management, and outcome of cholelithiasis in cats. Animals Ninety‐eight cats with cholelithiasis. Methods Retrospective multicenter case series. Electronic databases from 3 hospitals were searched for cats diagnosed with cholelithiasis by ultrasonography (US). Cholelithiasis was classified as incidental (IC) or symptomatic (SC) depending on clinicopathological signs, biliary tract US appearance, and presence of another disease potentially explaining the clinical presentation. Multivariate analysis was used to investigate factors associated with clinical expression of cholelithiasis and, within the SC group, survival. Results The observed prevalence of cholelithiasis was 0.99% (95% confidence interval [CI], 0.79%‐1.19%) among cats that underwent abdominal US. Cholelithiasis was classified as IC in 41% and SC in 59%. Choleliths found in multiple locations within the biliary tract (odds ratio [OR], 8.11; 95% CI, 2.32‐34.15; P = .001) or associated with US signs of obstruction (OR, 18.47; 95% CI, 2.13‐2413.34; P = .004) were significantly associated with SC. Concurrent hepatobiliary diseases were suspected or confirmed in 83% of cases with SC. Forty‐three cats (74%) with SC survived to discharge. Biliary tract obstruction (BTO) was negatively associated with survival (OR, 13.87; 95% CI, 1.54‐124.76; P = .001). None of the cats with IC that had available follow‐up (47%) developed clinicopathological signs related to cholelithiasis. Conclusions and Clinical Importance Cholelithiasis is uncommon and can be asymptomatic in cats. Symptomatic cholelithiasis frequently is associated with another hepatobiliary disease or BTO or both. Biliary tract obstruction is associated with poorer outcome.
- Published
- 2023
- Full Text
- View/download PDF
4. Effects of triclabendazole and its metabolite exposure on the heart‐rate–corrected QT intervals: A randomized, placebo‐ and positive‐controlled thorough QT study in healthy individuals
- Author
-
William T. Prince, Vinay Kumar Venishetty, Jean Lecot, Kasra Shakeri‐Nejad, Cathy Gray, Amanda Taylor, Ganesh R. Iyer, and Julia Zack
- Subjects
Therapeutics. Pharmacology ,RM1-950 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Triclabendazole is an effective and well‐tolerated treatment for human fascioliasis. A placebo‐ and positive‐controlled, four‐sequence by four‐period crossover study was conducted in 45 healthy participants to assess the effect of therapeutic (10 mg/kg twice daily [b.i.d.] for 1 day) and supratherapeutic (10 mg/kg b.i.d. for 3 days) oral doses of triclabendazole on corrected QT (QTc) interval prolongation. Moxifloxacin (400 mg, oral) was used as a positive control. The highest mean placebo‐corrected change from baseline in QTcF (ΔΔQTcF) on day 4 with triclabendazole was 9.2 at therapeutic dose ms and 21.7 ms at supratherapeutic dose, at 4 h postdose. The upper limit of the two‐sided 90% confidence interval exceeded 10 ms across all timepoints, except at predose timepoint on day 4 in the therapeutic group indicating that an effect of triclabendazole on cardiac repolarization could not be excluded. However, triclabendazole had no clinically significant effects on heart rate and cardiac conduction at the studied doses. In the moxifloxacin group, the mean ΔΔQTcF peak value was 13.7 ms at 3 h on day 4. The assay sensitivity was confirmed. Maximum plasma concentration of triclabendazole, sulfoxide metabolite, and sulfone metabolite occurred at ~3‐, 4‐, and 6‐h postdose, respectively. No deaths, serious adverse events, study discontinuations due to treatment‐emergent adverse events, or clinically relevant abnormalities in laboratory evaluations and vital sign values were observed. This study showed that triclabendazole had no clinically relevant effects on heart rate and cardiac conduction; however, an effect on cardiac repolarization (ΔΔQTcF >10 ms) could not be excluded.
- Published
- 2023
- Full Text
- View/download PDF
5. Short notice cancellations — an insight into Irish surgical waiting lists
- Author
-
O’Riordan, Brian, Reynolds, Ian S., Hechtl, Daniel, Lecot, Frederik P., Arya, Shobhit, Geoghegan, Justin, and Kennelly, Rory
- Published
- 2023
- Full Text
- View/download PDF
6. A Clustering Study of Dietary Patterns and Physical Activity among Workers of the Uruguayan State Electrical Company
- Author
-
Maria Mercedes Medina-Vadora, Julio Plaza-Diaz, Francisco Jesús Llorente-Cantarero, Cecilia Severi, Carlos Lecot, María Dolores Ruiz-López, and Ángel Gil
- Subjects
cluster analysis ,dietary patterns ,food groups ,principal component analysis ,physical activity ,sedentary behavior ,Nutrition. Foods and food supply ,TX341-641 - Abstract
Recent studies have shown that certain nutrients, specific food groups, or general dietary patterns (DPs) can promote health and prevent noncommunicable chronic diseases (NCCDs). Both developed and developing countries experience a high prevalence of NCCDs due to poor lifestyle habits, DPs, and low physical activity levels. This study aims to examine the dietary, physical activity, sociodemographic, and lifestyle patterns of Uruguayan State Electrical Company workers (the IN-UTE study). A total of 2194 workers participated in the study, providing information about their sociodemographics, lifestyles, and dietary habits through different questionnaires. To identify DPs from 16 food groups, principal component analysis (PCA) was performed. A hierarchical cluster algorithm was used to combine food groups and sociodemographic/lifestyle variables. Four DPs were extracted from the data; the first DP was related to the intake of energy-dense foods, the second DP to the characteristics of the job, the third DP to a Mediterranean-style diet, and the fourth DP to age and body mass index. In addition, cluster analysis involving a larger number of lifestyle variables produced similar results to the PCA. Lifestyle and sociodemographic factors, including night work, working outside, and moderate and intense PA, were significantly correlated with the dietary clusters, suggesting that working conditions, socioeconomic status, and PA may play an important role in determining DPs to some extent. Accordingly, these findings should be used to design lifestyle interventions to reverse the appearance of unhealthy DPs in the UTE population.
- Published
- 2024
- Full Text
- View/download PDF
7. Acerola (Malpighia spp.) Waste: A Sustainable Approach to Nutraceutical, Pharmaceutical, and Energy Applications
- Author
-
José Roberto Vega-Baudrit, Melissa Camacho, Diego Batista-Menezes, Yendry Corrales-Ureña, Juan Miguel Zúñiga, Arturo Mora Chacón, Nicole Lecot, Luis Castillo Henríquez, and Mary Lopretti
- Subjects
acerola ,acerola waste ,circular economy ,nutraceutical ,biopolymers ,Environmental sciences ,GE1-350 - Abstract
This study reviews the many uses for waste generated from acerola (Malpighia spp.) production, a tropical fruit renowned for its nutrient-rich content. Traditionally considered an environmental burden, this waste is now gaining attention for its sustainable applications in green technology. This review outlines the extraction of valuable bioactive compounds, like polyphenols, carotenoids, and pectin, that can be extracted from the acerola fruit and acerola waste, and it also delves into its potential in materials science, particularly in the creation of pharmaceutical formulations, nanomaterials, composites, biofuels, and energy applications. On the medical front, the paper highlights the promise that acerola waste holds in anti-inflammatory, antihyperglycemic, and anticancer therapies. By outlining challenges and opportunities, the review emphasizes the untapped potential of acerola waste as a resource for high-value products. These findings suggest a paradigm shift, turning what has been considered waste into a sustainable asset, thereby encouraging environmentally responsible practices within the fruit industry.
- Published
- 2023
- Full Text
- View/download PDF
8. Biofilms Functionalized Based on Bioactives and Nanoparticles with Fungistatic and Bacteriostatic Properties for Food Packing Uses
- Author
-
Gabriela Lluberas, Diego Batista-Menezes, Juan Miguel Zuñiga-Umaña, Gabriela Montes de Oca-Vásquez, Nicole Lecot, José Roberto Vega-Baudrit, and Mary Lopretti
- Subjects
food packaging films ,chitosan ,PVA ,nanoparticles ,phenols extract ,Plant ecology ,QK900-989 ,Animal biochemistry ,QP501-801 ,Biology (General) ,QH301-705.5 - Abstract
The objective of this work was to formulate PVA films with the addition of modified phenols, chitosan, silver, or copper nanoparticles with fungistatic and bacteriostatic activity. The films were characterized by Fourier transform infrared spectroscopy, thermogravimetry analysis, differential scanning calorimetry, and scanning electron microscopy. The bacteriostatic activity against Salmonella gallinarum and Lactobacillus acidophilus, and the fungistatic activity against Penicillium acidophilus were determined. The results indicated that the addition of phenols enhanced the effect on the stability of the chemical structure of the PVA film. PVA films with modified bioactives and nanoparticles inhibited the colonization of the microorganisms tested, indicating germicidal control.
- Published
- 2023
- Full Text
- View/download PDF
9. Longevity of preserved Solanum lycopersicum L. seeds: physicochemical characteristics
- Author
-
Guadalupe, Guidi M., Raúl, Amado-Cattáneo, Javier, Lecot C., Lorena, Deladino, and Aline, Schneider-Teixeira
- Published
- 2022
- Full Text
- View/download PDF
10. Preparation and Characterization of a Novel Nanocellulose-Derivative as a Potential Radiopharmaceutical Agent
- Author
-
Nicole, Lecot, Rosario, Gandaras, Diego, Batista-Menezes, Gabriela, Montes de Oca-Vásquez, Pablo, Cabral, Ma. Fernanda, García, José, Vega-Baudrit, Hugo, Cerecetto, and Mary, Lopretti
- Published
- 2022
- Full Text
- View/download PDF
11. Stratified Monte Carlo simulation of Markov chains
- Author
-
Fakhereddine, Rana, Haddad, Rami El, and Lécot, Christian
- Subjects
Mathematics - Statistics Theory - Abstract
We present several Monte Carlo strategies for simulating discrete-time Markov chains with continuous multi-dimensional state space; we focus on stratified techniques. We first analyze the variance of the calculation of the measure of a domain included in the unit hypercube, when stratified samples are used. We then show that each step of the simulation of a Markov chain can be reduced to the numerical integration of the indicator function of a subdomain of the unit hypercube. Our approach for Markov chains simulates N copies of the chain in parallel using stratified sampling and the copies are sorted after each step, according to their successive coordinates. We analyze variance reduction on examples of pricing of European and Asian options: enhanced efficiency of stratified strategies is shown., Comment: 16 pages, 4 figures
- Published
- 2016
12. Development of fluorescent- and radio-traceable T1307-polymeric micelles as biomedical agents for cancer diagnosis: biodistribution on 4T1 tumor-bearing mice
- Author
-
Nicole Lecot, Gonzalo Rodríguez, Valentina Stancov, Marcelo Fernández, Mercedes González, Romina J. Glisoni, Pablo Cabral, and Hugo Cerecetto
- Subjects
Amphiphilic polymeric micelles ,T1307 ,BODIPY ,99mTc ,In vivo biodistribution ,Cancer diagnosis ,Pharmacy and materia medica ,RS1-441 - Abstract
Abstract In recent years, nanocarriers have been studied as promising pharmaceutical tools for controlled drug-delivery, treatment-efficacy follow-up and disease imaging. Among them, X-shaped amphiphilic polymeric micelles (Tetronic®, poloxamines) display great potential due to their biocompatibility and non-toxic effects, among others. In the present work, polymeric micelles based on the T1307 copolymer were initially decorated with a 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY)-fluorophore in order to determinate its in vivo biodistribution on 4T1 tumor-bearing mice. However, unfavorable results with this probe led to two different strategies. On the one hand, the BODIPY-micelle-loaded, L-T1307-BODIPY, and on the other hand, the 99mTc-micelle-radiolabeled, L-T1307- 99m Tc, were analyzed separately in vivo. The results indicated that T1307 accumulates mainly in the stomach, the kidneys, the lungs and the tumor, reaching the maximum organ-accumulation 2 hours after intravenous injection. Additionally, and according to the results obtained for L-T1307- 99m Tc, the capture of the polymeric micelles in organs could be observed up to 24 hours after injection. The results obtained in this work were promising towards the development of new radiotracer agents for breast cancer based on X-shaped polymeric micelles.
- Published
- 2022
- Full Text
- View/download PDF
13. Context-dependent effects of cellular senescence in cancer development.
- Author
-
Lecot, Pacome, Alimirah, Fatouma, Desprez, Pierre-Yves, Campisi, Judith, and Wiley, Christopher
- Subjects
Extracellular Matrix ,Animals ,Humans ,Mice ,Neoplasms ,Neoplasm Invasiveness ,Inflammation ,Neovascularization ,Pathologic ,Regeneration ,Cell Aging ,Cell Division ,Embryonic Development ,Neovascularization ,Physiologic ,Phenotype ,Cellular Microenvironment ,Cellular Senescence ,Oncology & Carcinogenesis ,Oncology and Carcinogenesis - Abstract
Cellular senescence is an established tumour-suppressive mechanism that prevents the proliferation of premalignant cells. However, several lines of evidence show that senescent cells, which often persist in vivo, can also promote tumour progression in addition to other age-related pathologies via the senescence-associated secretory phenotype (SASP). Moreover, new insights suggest the SASP can facilitate tissue repair. Here, we review the beneficial and detrimental roles of senescent cells, highlighting conditions under which the senescence response does and does not promote pathology, particularly cancer. By better understanding the context-dependent effects of cellular senescence, it may be feasible to limit its detrimental properties while preserving its beneficial effects, and develop novel therapeutic strategies to prevent or treat cancer and possibly other age-associated diseases.
- Published
- 2016
14. Mitochondrial Dysfunction Induces Senescence with a Distinct Secretory Phenotype
- Author
-
Wiley, Christopher D, Velarde, Michael C, Lecot, Pacome, Liu, Su, Sarnoski, Ethan A, Freund, Adam, Shirakawa, Kotaro, Lim, Hyung W, Davis, Sonnet S, Ramanathan, Arvind, Gerencser, Akos A, Verdin, Eric, and Campisi, Judith
- Subjects
Biochemistry and Cell Biology ,Biological Sciences ,Stem Cell Research ,Aging ,Genetics ,2.1 Biological and endogenous factors ,Underpinning research ,1.1 Normal biological development and functioning ,Aetiology ,Adenylate Kinase ,Animals ,Cellular Senescence ,DNA Polymerase gamma ,DNA-Directed DNA Polymerase ,Enzyme Activation ,Mice ,Mitochondria ,NAD ,Phenotype ,Sirtuins ,Tumor Suppressor Protein p53 ,Medical Biochemistry and Metabolomics ,Endocrinology & Metabolism ,Biochemistry and cell biology ,Medical biochemistry and metabolomics - Abstract
Cellular senescence permanently arrests cell proliferation, often accompanied by a multi-faceted senescence-associated secretory phenotype (SASP). Loss of mitochondrial function can drive age-related declines in the function of many post-mitotic tissues, but little is known about how mitochondrial dysfunction affects mitotic tissues. We show here that several manipulations that compromise mitochondrial function in proliferating human cells induce a senescence growth arrest with a modified SASP that lacks the IL-1-dependent inflammatory arm. Cells that underwent mitochondrial dysfunction-associated senescence (MiDAS) had lower NAD+/NADH ratios, which caused both the growth arrest and prevented the IL-1-associated SASP through AMPK-mediated p53 activation. Progeroid mice that rapidly accrue mtDNA mutations accumulated senescent cells with a MiDAS SASP in vivo, which suppressed adipogenesis and stimulated keratinocyte differentiation in cell culture. Our data identify a distinct senescence response and provide a mechanism by which mitochondrial dysfunction can drive aging phenotypes.
- Published
- 2016
15. Surgical Strategies to Reduce Postoperative Recurrence of Crohn's Disease After Ileocolic Resection
- Author
-
Ian S. Reynolds, Katie L. Doogan, Éanna J. Ryan, Daniel Hechtl, Frederik P. Lecot, Shobhit Arya, and Sean T. Martin
- Subjects
Crohn's disease ,ileocolic resection ,anastomotic techniques ,mesenteric excision ,resection margins ,Surgery ,RD1-811 - Abstract
Postoperative recurrence after ileocaecal resection for fibrostenotic terminal ileal Crohn's disease is a significant issue for patients as it can result in symptom recurrence and requirement for further surgery. There are very few modifiable factors, aside from smoking cessation, that can reduce the risk of postoperative recurrence. Until relatively recently, the surgical technique used for resection and anastomosis had little or no impact on postoperative recurrence rates. Novel surgical techniques such as the Kono-S anastomosis and extended mesenteric excision have shown promise as ways to reduce postoperative recurrence rates. This manuscript will review and discuss the evidence regarding a range of surgical techniques and their potential role in reducing disease recurrence. Some of the techniques have been shown to be associated with significant benefits for patients and have already been integrated into the routine clinical practice of some surgeons, while other techniques remain under investigation. Current techniques such as resection of the mesentery close to the intestine and stapled side to side anastomosis are being challenged. It is looking more likely that surgeons will have a major role to play when it comes to reducing recurrence rates for patients undergoing ileocaecal resection for Crohn's disease.
- Published
- 2021
- Full Text
- View/download PDF
16. Conversion of Adjustable Gastric Banding to Adjustable Banded Roux-en-Y Gastric Bypass: Should We Leave the Band in Place?
- Author
-
Lecot, Frederik PDM, Boerma, Evert-Jan G, Sigterman-Nelissen, Rochelle, Meesters, Berry, Fransen, Sofie, and Greve, Jan Willem
- Published
- 2019
- Full Text
- View/download PDF
17. Activate Your Health, a 3-year, multi-site, workplace healthy lifestyle promotion program: study design
- Author
-
Thiffya Arabi Kugathasan, François Lecot, Suzanne Laberge, Jonathan Tremblay, and Marie-Eve Mathieu
- Subjects
Workplace ,Health promotion program ,Lifestyle habits ,Lifestyle change ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Workplace Health Promotion Programs (WHPP) have been shown to be an efficient way of improving workers’ health. These programs can be incorporated in the worker’s daily schedule and improve their productivity at work. Improving employees’ health also benefits the employers by increasing their return on investment and lowering healthcare costs. The Activate Your Health program, created by Capsana in 2015, is a WHPP targeting multiple lifestyle habits for a three-year period. This WHPP includes tailored web-based interventions and the support of different health professionals throughout the years. We hypothesize that this approach will yield long-term lifestyle changes. The objective of the current paper is to describe the Activate Your Health program’s design. Methods/design Eleven companies are taking part in this WHPP and had to choose among five different options of this program and all their employees were encouraged to participate. Each option differs by the number and type of interventions included. The limited option, which is considered the control group, only consists in completing a questionnaire regarding their health status, lifestyle habits and behaviors. On the other end, the extensive option receives a combination of multiple interventions: online menus, health challenges, support in creating a healthy work environment, coaching by health professionals (nurse, nutritionist, and kinesiologist), health screening and flexibility assessment, online resources, social health platform, and activity tracking. The remaining options are in between these options and vary by the amount of intervention. Baseline data are already gathered; two other data collection periods will take place after one and 2 years into the program. The primary outcomes of the current program are physical activity and fitness measures, nutritional data, smoking habits, stress and intention to change. Discussion The Activate Your Health program will allow us to compare which combinations of interventions are the most effective. It is expected that the extensive option will be the most advantageous to improve lifestyle habits. The results will indicate the strength and weakness of each intervention and how it could be improved. Trial registration Clinicaltrails.gov, registration number: NCT02933385 (updated on the 26th of March 2019, initially registered on the 5th of October 2016).
- Published
- 2019
- Full Text
- View/download PDF
18. 99mTc Stearyl 6-(benzylidenehydrazinyl) nicotinamide Liposomes as Tumor Permeability Evaluation Tracer
- Author
-
Cabrera, Mirel, Lecot, Nicole, Fernández, Marcelo, Gambini, J. P., Porcal, Williams, and Cabral, Pablo
- Published
- 2021
- Full Text
- View/download PDF
19. Development and Evaluation of 2-Amino-7-Fluorophenazine 5,10-Dioxide Polymeric Micelles as Antitumoral Agents for 4T1 Breast Cancer
- Author
-
Nicole Lecot, Belén Dávila, Carina Sánchez, Marcelo Fernández, Mercedes González, Pablo Cabral, Hugo Cerecetto, and Romina Glisoni
- Subjects
bioreductive-drug ,phenazine-5,10-dioxide ,amphiphilic pristine polymeric micelles ,4T1-tumor model ,in vivo antitumoral activity ,Organic chemistry ,QD241-441 - Abstract
2-Amino-7-fluorophenazine 5,10-dioxide (FNZ) is a bioreducible prodrug, poorly soluble in water, with potential anticancer activity on hypoxic-tumors. This poor solubility limits its potential applications in clinic. Amphiphilic pristine polymeric micelles (PMs) based on triblock copolymers Pluronic® and Tetronic®, glycosylated derivatives and their mixtures with preformed-liposomes (LPS), were analyzed as strategies to improve the bioavailability of FNZ. FNZ encapsulations were performed and the obtaining nanostructures were characterized using UV-visible spectroscopy (UV-VIS), Transmission Electron Microscopy (TEM) and Dynamic Light Scattering (DLS). The most promising nanoformulations were analyzed for their potential toxicity and pharmacologically, at 20 mg/kg FNZ-doses, in a stage-IV murine metastatic-breast tumor model. The results revealed that the solubility of the encapsulated-FNZ increased up to 14 times and the analysis (UV-VIS, DLS and TEM) confirmed the interaction between vehicles and FNZ. In all the cases appropriate encapsulation efficiencies (greater than 75%), monodisperse nanometric particle sizes (PDI = 0.180–0.335), adequate Z-potentials (−1.59 to −26.4 mV), stabilities and spherical morphologies were obtained. The in vitro profile of FNZ controlled releases corresponded mainly to a kinetic Higuchi model. The in vitro/in vivo biological studies revealed non-toxicity and relevant tumor-weight diminution (up to 61%).
- Published
- 2021
- Full Text
- View/download PDF
20. Concentration‐QTcF Modeling of Icenticaftor from a Randomized, Placebo‐ and Positive‐Controlled Thorough QT Study in Healthy Participants
- Author
-
Iyer, Ganesh R., Darpo, Borje, Xue, Hongqi, Lecot, Jean, Zack, Julia, Bebrevska, Lidiya, Weis, Wendy, Jones, Ieuan, and Drollmann, Anton
- Abstract
Icenticaftor (QBW251) is a potentiator of the cystic fibrosis transmembrane receptor. Based on its mechanism of action, icenticaftor is expected to provide benefits in patients with chronic obstructive pulmonary disease by restoring mucociliary clearance, which would eventually lead to a reduction of bacterial colonization and related inflammatory cascade. A placebo‐ and positive‐controlled, 4‐way crossover thorough QT study was conducted in 46 healthy participants with the objective to assess the effect of therapeutic (300 mg twice daily for 6 days) and supratherapeutic (750 mg twice daily for 6 days) oral doses of icenticaftor on electrocardiogram parameters, including concentration‐corrected QT (QTc) analysis. Moxifloxacin (400 mg, oral) was used as a positive control. In the concentration‐QTc analysis performed on pooled data from Day 1 and Day 6 (steady state), the estimated population slope was shallow and slightly negative: –0.0012 ms/ng/mL. The effect on the Fridericia corrected QT (QTcF) interval (∆ΔQTcF) was predicted to be −1.3 milliseconds at the icenticaftor 300‐mg twice‐daily peak concentration (geometric mean was 1094 ng/mL) and −5.5 milliseconds at the 750‐mg twice‐daily peak concentration (geometric mean Cmaxwas 4529 ng/mL) indicated a mild shortening effect of icenticaftor on QTcF interval length. The results of the by‐time‐point analysis indicated least squares placebo corrected mean ∆∆QTcF across time points ranged from –7.9 to 0.1 milliseconds at 1 and 24 hours after dosing both on Day 6 in the 750‐mg dose group compared with –3.7 to 1.6 milliseconds at 1.5 and 24 hours after dosing on Day 1 in the 300‐mg dose group. Assay sensitivity was demonstrated with moxifloxacin. The large accumulation of exposures, especially the 4.3‐fold increase in peak plasma concentration observed at the icenticaftor 750‐mg twice‐daily dosage compared with Icenticaftor 300 mg twice daily (2.3‐fold) on Day 6 provided a large concentration range (up to 9540 ng/mL) to evaluate the effect of icenticaftor on ΔΔQTcF. Based on the concentration–QTc analysis, an effect on ΔΔQTcF exceeding 10 milliseconds can be excluded within the full observed ranges of plasma concentrations on icenticaftor, up to approximately 9540 ng/mL. Icenticaftor at the studied doses demonstrated a mild shortening in QTcF, which is unlikely to be of clinical relevance in a therapeutic setting.
- Published
- 2024
- Full Text
- View/download PDF
21. Study of Food Intake and Physical Activity Patterns in the Working Population of the Uruguayan State Electrical Company (UTE): Design, Protocol and Methodology
- Author
-
Maria Mercedes Medina-Vadora, Cecilia Severi, Carlos Lecot, Maria Dolores Ruiz-Lopez, and Angel Gil
- Subjects
food intake ,lifestyle habits ,physical activity ,food consumption ,workers nutritional state ,food intake patterns ,Nutrition. Foods and food supply ,TX341-641 - Abstract
Noncommunicable diseases are the main cause of death globally, and most are potentially preventable; they are long term diseases and generally evolve slowly. In Uruguay 64.9% of the population between 25 and 64 years of age are either overweight or obese. The available scientific data show that workplaces are good for developing food-intake interventions for a healthier life. The present study aims to report the design, protocol and methodology for the evaluation of the food intake and physical activity patterns of the Uruguayan State Electrical Company (UTE) workers, as it is distributed across the whole country, and has established associations with overweight and obesity in order to establish institutional strategies to improve the situation. This study uses a population and a cross-sectional, randomized, representative sample of UTE workers with a precision of 3% and a confidence level of 95%. The considered anthropometric variables are weight, height, waist circumference, percentage of fat mass and percentage of visceral fat. A questionnaire on frequency of consumption of different foods and two 24-h dietary recalls (24-h DR) will be performed to evaluate the food intake. Accelerometry will be used to evaluate physical activity, and the International physical activity questionnaire (IPAQ) will be applied. Clinical data will be obtained from the UTE clinical charts. This is the first study of its kind that will be undertaken in Uruguay. It is registered under ClinicalTrials.gov Identifier nº NCT04509908.
- Published
- 2021
- Full Text
- View/download PDF
22. Process Development and Manufacturing: OUTCOMES OF THE T2EVOLVE EUROPEAN SURVEY ON CAR T CELL ANALYTICAL METHODS FROM APHERESIS TO POST-INFUSION IMMUNOMONITORING
- Author
-
Lecot, P., primary, Courcault, E., additional, Neininger, K., additional, Lorrain, M., additional, Gambotti, L., additional, Dreuillet, C., additional, Chatterjee, S., additional, Locatelli, F., additional, Luu, M., additional, Sanges, C., additional, Hudecek, M., additional, Kremer, A., additional, De Angelis, B., additional, Quintarelli, C., additional, and Negre, H., additional
- Published
- 2023
- Full Text
- View/download PDF
23. Neutrophil Heterogeneity in Cancer: From Biology to Therapies
- Author
-
Pacôme Lecot, Matthieu Sarabi, Manuela Pereira Abrantes, Julie Mussard, Leo Koenderman, Christophe Caux, Nathalie Bendriss-Vermare, and Marie-Cécile Michallet
- Subjects
neutrophil (PMN) ,cancer ,immunotherapy ,MDSC (myeloid-derived suppressor cells) ,G-MDSC (granulocytic MDSC) ,tumor-associated neutrophils (TANs) ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Neutrophils have been extensively described in the pathophysiology of autoimmune and infectious diseases. Accumulating evidence also suggests the important role of neutrophils in cancer progression through their interaction with cancer and immune cells in blood and in the tumor microenvironment (TME). Most studies have described neutrophils as key drivers of cancer progression, due to their involvement in various tumor promoting functions including proliferation, aggressiveness, and dissemination, as well as in immune suppression. However, such studies were focusing on late-stages of tumorigenesis, in which chronic inflammation had already developed. The role of tumor-associated neutrophils (TANs) at early stages of tumor development remains poorly described, though recent findings indicate that early-stage TANs may display anti-tumor properties. Beyond their role at tumor site, evidence supported by NLR retrospective studies and functional analyses suggest that blood neutrophils could also actively contribute to tumorigenesis. Hence, it appears that the phenotype and functions of neutrophils vary greatly during tumor progression, highlighting their heterogeneity. The origin of pro- or anti-tumor neutrophils is generally believed to arise following a change in cell state, from resting to activated. Moreover, the fate of neutrophils may also involve distinct differentiation programs yielding various subsets of pro or anti-tumor neutrophils. In this review, we will discuss the current knowledge on neutrophils heterogeneity across different tissues and their impact on tumorigenesis, as well as neutrophil-based therapeutic strategies that have shown promising results in pre-clinical studies, paving the way for the design of neutrophil-based next generation immunotherapy.
- Published
- 2019
- Full Text
- View/download PDF
24. Activate Your Health, a 3-year, multi-site, workplace healthy lifestyle promotion program: study design
- Author
-
Kugathasan, Thiffya Arabi, Lecot, François, Laberge, Suzanne, Tremblay, Jonathan, and Mathieu, Marie-Eve
- Published
- 2019
- Full Text
- View/download PDF
25. Les risques d’une consommation addictive d’argile ou de kaolin chez la femme enceinte : à propos de 3 cas
- Author
-
Cellier, Morgane, Lecot, Jérémy, Morin, Emilie, Deguigne, Marie, Lelièvre, Bénédicte, and Le Roux, Gaël
- Abstract
Dans la littérature, une consommation chronique de kaolin expose potentiellement la femme enceinte à deux risques : une anémie ferriprive/carence en micronutriments et une intoxication par les métaux lourds. Les conséquences pour le fœtus et le nouveau-né sont encore très peu documentées dans la littérature. Nous rapportons donc ici les cas de 3 femmes enceintes ayant consommé du silicate d’aluminium, sous forme de kaolin ou de coomba, par pratique culturelle et syndrome de Pica. Le premier cas a été documenté par une analyse qualitative et quantitative d’un échantillon du kaolin consommé. L’analyse quantitative du kaolin consommé par la patiente 1 a retrouvé une teneur très élevée en aluminium et dans un second temps une teneur élevée en cuivre, vadanium et plomb. Seule une patiente sur les 3 a présenté une anémie ferriprive avec une plombémie normale. Les autres n’ont eu aucunes répercussions. Le centre antipoison a suivi rétrospectivement ces femmes enceintes pour connaître le déroulement de l’accouchement et l’absence de complication chez le nouveau-né. Ces suivis renseignaient des accouchements sans complication et un poids de l’enfant normal à la naissance. Malgré la teneur très importante en aluminium de l’échantillon de la patiente 1, le risque de survenue d’effets chroniques liés à l’aluminium reste minime compte-tenu du faible dépassement des valeurs de référence sanitaires d’après l’autorité européenne de sécurité des aliments (EFSA).
- Published
- 2023
- Full Text
- View/download PDF
26. La maladie d’Addison chez le chat
- Author
-
Lecot, Lorris, Benchekroun, Ghita, Lecot, Lorris, and Benchekroun, Ghita
- Abstract
Ce cas illustre le diagnostic d’une maladie d’Addison chez un chat femelle stérilisée Scottish fold de 4,5 ans présentant un historique de dysorexie, d’abattement et d’amaigrissement évoluant depuis un mois dans un contexte d’azotémie et de diminution du rapport Na/K persistantes. L’hypocorticisme primaire est confirmé par une valeur d’ACTH (hormone adrénocorticotrope) endogène augmentée ainsi qu’un test de stimulation à l’ACTH documentant un hypocortisolisme et un hypoaldostéronisme. La prise en charge thérapeutique constituée d’une supplémentation en prednisolone et en DOCP (pivalate de désoxycortone) permet une amélioration des signes cliniques et des anomalies biologiques en moins de 5 jours. Ce cas illustre le défi diagnostique de l’hypocorticisme, très rarement rencontré chez le chat et mimant parfois des maladies beaucoup plus fréquentes dans cette espèce. Enfin, ce cas montre que le DOCP peut être utilisé avec succès en tant que supplémentation en minéralocorticoïdes lors de maladie d’Addison chez le chat.
- Published
- 2022
- Full Text
- View/download PDF
27. L’attaque des concombres sauteurs ! À propos de 3 cas
- Author
-
Carrey, N., Cellier, M., Le Roux, G., and Lecot, J.
- Abstract
Ecballium elateriumou « concombre sauteur » est une plante retrouvée habituellement au niveau du pourtour méditerranéen. Le centre antipoison (CAP) d’Angers a été sollicité pour des cas d’intoxications à cette plante jusqu’alors absente de nos jardins. Le but de cette étude était de décrire les cas d’intoxications à Ecballium elateriumrecensés par le CAP d’Angers.
- Published
- 2024
- Full Text
- View/download PDF
28. Scombrotoxisme : expérience des centres antipoison de France de 2012 à 2021
- Author
-
Jarrige, Xavier, Glaizal, Mathieu, Sinno-Tellier, Sandra, Boels, David, Delcourt, Nicolas, Labadie, Magali, Langrand, Jérôme, Le Roux, Gaël, Paret, Nathalie, Tournoud, Christine, Simon, Nicolas, de Haro, Luc, Azzouz, Ramy, Nisse, Patrick, Chevalier, Cécile, Paradis, Camille, Blanc, Ingrid, Nardon, Audrey, Torrents, Romain, Schmitt, Corine, Battefort, Florent, Puskarczyk, Emmanuel, Laborde, Hervé, Caré, Weniko, Vodovar, Dominique, Lecot, Jérémy, Legeay, Marion, and Deguigne, Marie
- Abstract
Le scombrotoxisme est une intoxication observée après ingestion de chair de poisson mal conservée, le plus souvent de la famille des scombridés, d’où le nom du toxidrome. La chair de poissons habituellement comestibles comme les thons ou les maquereaux, peut, dans certaines conditions, contenir d’importantes quantités d’histamine générant un tableau clinique évoquant une anaphylaxie. Les auteurs présentent l’expérience des Centres Antipoison de France sur une décennie (de 2012 à 2021 inclus) concernant cette intoxication fréquente mais souvent méconnue : 173 repas concernant 543 patients ont été colligés (47 % d’intoxications individuelles et 53 % d’intoxications collectives allant de 2 à 200 patients par repas). Il n’existe pas de véritable saisonnalité avec des cas observés tout au long de l’année. Les départements côtiers et du sud de la France sont plus concernés, mais l’ensemble du territoire y compris l’outremer peut être le théâtre de ce type d’intoxication. Si la famille des scombridés est impliquée dans la très grande majorité des cas (93 % des repas et 95 % des patients), il est possible d’observer de telles intoxications avec d’autres familles (dans cette série, 7 repas toxiques après ingestion de poissons de la famille des clupéidés). Le tableau clinique est caractérisé par un délai d’apparition court, des symptômes mimant une allergie et une bonne efficacité des médicaments antihistaminiques. Pour seulement 3 patients sur 543, un signe de gravité (collapsus) a été rapporté. Tous les patients ont rapidement guéri sans séquelle, confirmant que le scombrotoxisme est une intoxication au tableau clinique impressionnant, mais ne posant pas de véritable problème de prise en charge si le diagnostic est correctement posé.
- Published
- 2023
- Full Text
- View/download PDF
29. Trends in Distal Esophageal and Gastroesophageal Junction Cancer Care
- Author
-
Kalff, Marianne C., van Berge Henegouwen, Mark I., Baas, Peter C., Bahadoer, Renu R., Belt, Eric J. T., Brattinga, Baukje, Claassen, Linda, Ćosović, Admira, Crull, David, Daams, Freek, van Dalsen, Annette D., Dekker, Jan Willem T., van Det, Marc J., Drost, Manon, van Duijvendijk, Peter, Eshuis, Wietse J., van Esser, Stijn, Gaspersz, Marcia P., Görgec, Burak, Groenendijk, Richard P. R., Hartgrink, Henk H., van der Harst, Erwin, Haveman, Jan Willem, Heisterkamp, Joos, van Hillegersberg, Richard, Kelder, Wendy, Kingma, B. Feike, Koemans, Willem J., Kouwenhoven, Ewout A., Lagarde, Sjoerd M., Lecot, Frederik, van der Linden, Philip P., Luyer, Misha D. P., Nieuwenhuijzen, Grard A. P., Olthof, Pim B., van der Peet, Donald L., Pierie, Jean-Pierre E. N., Pierik, E. G. J. M. Robert, Plat, Victor D., Polat, Fatih, Rosman, Camiel, Ruurda, Jelle P., van Sandick, Johanna W., Scheer, Rene, Slootmans, Cettela A. M., Sosef, Meindert N., Sosef, Odin V., de Steur, Wobbe O., Stockmann, Hein B. A. C., Stoop, Fanny J., Voeten, Daan M., Vugts, Guusje, Vijgen, Guy H. E. J., Weeda, Víola B., Wiezer, Marinus J., van Oijen, Martijn G. H., and Gisbertz, Suzanne S.
- Published
- 2023
- Full Text
- View/download PDF
30. Apport de la signature stéroïdienne par spectrométrie de masse dans la stratification des patientes sopk
- Author
-
Lecot-Connan, T., Rives, M., Bachelot, G., Sow, C., Fourati, S., Tejedor, I., Godon, T., Lamazière, A., and Bachelot, A.
- Abstract
Le SOPK est fréquemment associé à des troubles métaboliques tels que l’obésité et/ou l’insulino-résistance. Un bilan métabolique est recommandé quel que soit l’IMC. Cependant, la littérature est moins prolifique concernant les patientes avec un IMC normal. L’objectif de cette étude est de caractériser la signature métabolomique des patientes SOPK avec un IMC normal.
- Published
- 2024
- Full Text
- View/download PDF
31. Intoxication à la xylazine en France : une série de cas sur 20ans
- Author
-
Douvinet, A., Lecot, J., Deguigne, M., Le Roux, G., and Cellier, M.
- Abstract
La xylazine, sédatif à usage vétérinaire, est de plus en plus utilisée de façon détournée aux Etats-Unis, comme produit de coupe du fentanyl ou en association avec l’héroïne et la cocaïne (« speedball ») afin d’en potentialiser et prolonger la durée des effets [1]. En France cet usage détourné est peu connu ce qui explique que les centres antipoison français sont peu appelés pour cette problématique. L’objectif de cette étude est de décrire la gravité des cas d’intoxication à la xylazine en France.
- Published
- 2024
- Full Text
- View/download PDF
32. V max estimate from three-parameter critical velocity models: validity and impact on 800 m running performance prediction
- Author
-
Bosquet, Laurent, Duchene, Antoine, Lecot, François, Dupont, Grégory, and Leger, Luc
- Published
- 2006
- Full Text
- View/download PDF
33. Protection of steel with only one coat
- Author
-
del Amo, B, Di Sarli, A R, Lecot, J, and Caprari, JJ
- Published
- 2003
- Full Text
- View/download PDF
34. Recurrent Disease After Esophageal Cancer Surgery
- Author
-
Kalff, Marianne C., Henckens, Sofie P.G., Voeten, Daan M., Heineman, David J., Hulshof, Maarten C.C.M., van Laarhoven, Hanneke W.M., Eshuis, Wietse J., Baas, Peter C., Bahadoer, Renu R., Belt, Eric J.T., Brattinga, Baukje, Claassen, Linda, Ćosović, Admira, Crull, David, Daams, Freek, van Dalsen, Annette D., Dekker, Jan Willem T., van Det, Marc J., Drost, Manon, van Duijvendijk, Peter, van Esser, Stijn, Gaspersz, Marcia P., Görgec, Burak, Groenendijk, Richard P.R., Hartgrink, Henk H., van der Harst, Erwin, Haveman, Jan W., Heisterkamp, Joos, van Hillegersberg, Richard, Kelder, Wendy, Kingma, B. Feike, Koemans, Willem J., Kouwenhoven, Ewout A., Lagarde, Sjoerd M., Lecot, Frederik, van der Linden, Philip P., Luyer, Misha D.P., Nieuwenhuijzen, Grard A.P., Olthof, Pim B., van der Peet, Donald L., Pierie, Jean-Pierre E.N., Pierik, E.G.J.M. Robert, Plat, Victor D., Polat, Fatih, Rosman, Camiel, Ruurda, Jelle P., van Sandick, Johanna W., Scheer, Rene, Slootmans, Cettela A.M., Sosef, Meindert N., Sosef, Odin V., de Steur, Wobbe O., Stockmann, Hein B.A.C., Stoop, Fanny J., Vugts, Guusje, Vijgen, Guy H.E.J., Weeda, Víola B., Wiezer, Marinus J., van Oijen, Martijn G.H., van Berge Henegouwen, Mark I., and Gisbertz, Suzanne S.
- Published
- 2022
- Full Text
- View/download PDF
35. Hantavirus Infection in Children in Argentina
- Author
-
Noemí C. Pini, Amanda Resa, Gladys del Jesús Laime, Gustavo Lecot, Thomas G. Ksiazek, Silvana Levis, and Delia A. Enria
- Subjects
Argentina ,United States ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
Clinical hantavirus infection was diagnosed in five Argentine children ages 5 to 11 years by immunoglobulin M (IgM)- capture enzyme-linked immunosorbent assay using Sin Nombre virus (SNV) antigens. Death in three of the children was associated with absence of detectable IgG to SNV antigens. An additional two cases in healthy children were studied: one, a breast-fed 15-month-old whose mother died of suspected hantavirus pulmonary syndrome (HPS) 8 months previously, had hantavirus IgG(> 1:6400); a second, whose mother survived HPS during month three of pregnancy, apparently had maternal antibodies no longer detectable 1 year after birth.
- Published
- 1998
- Full Text
- View/download PDF
36. Curious Binding Energy Increase between the Receptor-Binding Domain of the SARS-CoV-2 Spike Protein and Angiotensin-Converting Enzyme 2 Adsorbed on a Silane Monolayer from Molecular Dynamics Simulations.
- Author
-
Lecot, Solène, Chevolot, Yann, Phaner-Goutorbe, Magali, and Yeromonahos, Christelle
- Published
- 2021
- Full Text
- View/download PDF
37. Les syndromes mycotoxiques de latence courte.
- Author
-
Landreau, Anne, Bruneau, Chloé, Aubriot, Edwige, Lecot, Jeremy, and Le Roux, Gaël
- Abstract
Les syndromes mycotoxiques de latence courte apparaissent dans les six heures qui suivent l'ingestion de champignons. Ils entraînent principalement des signes digestifs rapidement résolutifs et sont généralement banalisés. Une étude réalisée grâce aux données du centre antipoison et de toxicovigilance d'Angers permet de mettre en exergue leur gravité potentielle. Il est important de sensibiliser les professionnels de santé à leur prévention et à une prise en charge adéquate des patients. Short-latency mycotoxic syndromes appear within six hours after ingestion of mushrooms. They mainly lead to digestive signs that resolve quickly and are generally trivialized. A study carried out with data from the Angers Poison and Toxicovigilance Center highlights their potential seriousness. It is important to raise awareness among health professionals about their prevention and proper management of patients. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
38. Impact of Silane Monolayers on the Adsorption of Streptavidin on Silica and Its Subsequent Interactions with Biotin: Molecular Dynamics and Steered Molecular Dynamics Simulations.
- Author
-
Lecot, Solène, Chevolot, Yann, Phaner-Goutorbe, Magali, and Yeromonahos, Christelle
- Published
- 2020
- Full Text
- View/download PDF
39. Impact of Silane Monolayers on the Adsorption of Streptavidin on Silica and Its Subsequent Interactions with Biotin: Molecular Dynamics and Steered Molecular Dynamics Simulations.
- Author
-
Solène Lecot, Yann Chevolot, Magali Phaner-Goutorbe, and Yeromonahos, Christelle
- Published
- 2020
- Full Text
- View/download PDF
40. Les erreurs médicamenteuses en établissement médico-social : étude prospective sur un an
- Author
-
Cellier, Morgane, Lecot, Jérémy, Hamon, Yveline, Triquet, Louise, Descatha, Alexis, and Deguigne, Marie
- Abstract
Il existe une réelle méconnaissance des erreurs médicamenteuses (EM) qui surviennent dans les structures médico-sociales. L’objectif de cette étude consiste à établir un état des lieux des EM qui surviennent dans ces structures, afin d’étudier les déterminants, causes et conséquences de ces erreurs sur la santé des patients.
- Published
- 2023
- Full Text
- View/download PDF
41. Intoxication grave après ingestion d’un scléroderme : à propos d’un cas
- Author
-
Arnaud, E., Bruneau, C., Le Roux, G., and Lecot, J.
- Abstract
Tous les ans, de nombreux appels sont traités par les centres antipoison en France pour des intoxications à la suite d’ingestion de champignons toxiques. La famille des sclérodermes contient des spécimens de comestibilité médiocre entraînant des troubles digestifs mineurs. Ce cas présente une intoxication grave après l’ingestion d’un scléroderme formellement identifié.
- Published
- 2023
- Full Text
- View/download PDF
42. Arrangement of Monofunctional Silane Molecules on Silica Surfaces: Influence of Alkyl Chain Length, Head-Group Charge, and Surface Coverage, from Molecular Dynamics Simulations, X-ray Photoelectron Spectroscopy, and Fourier Transform Infrared Spectroscopy
- Author
-
Lecot, Solène, Lavigne, Antonin, Yang, Zihua, Géhin, Thomas, Botella, Claude, Jousseaume, Vincent, Chevolot, Yann, Phaner-Goutorbe, Magali, and Yeromonahos, Christelle
- Abstract
Surface chemical functionalization is used in analytical tools to immobilize biomolecules that will capture a specific analyte and also to reduce the nonspecific adsorption. Silane monolayers are widely used to functionalize silica surfaces. Their interfacial properties are linked to the silane organization. Here, we study, by molecular dynamics simulations, the effects of silane molecule head-group charge, alkyl chain length, and surface coverage on the structure of silane monolayers. Four molecules are investigated: 3-aminopropyldimethylethoxysilane, n-propyldimethylmethoxysilane, octadecyldimethylmethoxysilane, and tert-butyl-11-(dimethylamino(dimethyl)silyl)undecanoate. The results suggest that, while long alkyl chains straighten out and adopt a more organized structure as surface coverage increases, the tilt angle of short chains is independent of surface coverage. Furthermore, in the case of long alkyl chains, a charged head-group seems to reduce the tilt angle to surface coverage dependence. The simulated alkyl chain tilt angles were qualitatively validated by infrared spectroscopy and X-ray photoelectron spectroscopy. Also, a hexagonal packing is observed in all of the monolayers but is more defined as surface coverage increases. The nematic order parameter suggests that this packing is governed by the parallel orientation of the first C–C bonds near the surface. So, even short alkyl chains, with a large tilt angle distribution, present a hexagonal packing.
- Published
- 2020
- Full Text
- View/download PDF
43. Bon appetit. Diarrhoea after eating mushrooms
- Author
-
Bruneau, Chloé, Lecot, Jérémy, D’Aillières, Gae¨tan, and Descatha, Alexis
- Published
- 2024
- Full Text
- View/download PDF
44. Saturnisme à la suite d’une tentative de suicide par arme à feu : à propos de 2 cas
- Author
-
Lelièvre, Bénédicte, Bruneau, Chloé, Cellier, Morgane, Legeay, Marion, Chauveau, Philippe, and Lecot, Jérémy
- Abstract
Décrire le risque de saturnisme à la suite d’une tentative de suicide par arme à feu.
- Published
- 2023
- Full Text
- View/download PDF
45. Promoter Hypermethylation of Genes Encoding for RASSF/Hippo Pathway Members Reveals Specific Alteration Pattern in Diffuse Gliomas
- Author
-
Levallet, Guénaëlle, Creveuil, Christian, Bekaert, Lien, Péres, Elodie, Planchard, Gaëtane, Lecot-Cotigny, Sylvie, Guillamo, Jean-Sébastien, Emery, Evelyne, Zalcman, Gérard, and Lechapt-Zalcman, Emmanuèle
- Abstract
Ras association domain family (RASSF)/Hippo pathway alterations are poorly characterized in diffuse gliomas. We assayed promoter methylation of LATS1/2, MST1(STK4)/MST2(STK3), RASSF1, RASSF2, Nore1A/RASSF5, RASSF6, and RASSF10genes in 133 diffuse gliomas. The RASSF/Hippo pathway was highly silenced in gliomas, particularly RASSF1A (79.4%) and LATS2 (35.9%). The most frequent combination of promoter hypermethylation of one RASSF gene and one Hippo pathway member's gene was RASSF1/LATS2-coupled hypermethylation [n= 44 (33.08%)]. Hypermethylated profiles were related to IDHmutation, yet not randomly in IDH-mutated gliomas, because LATS2promoter hypermethylation was more frequent in oligodendroglioma than in astrocytoma. RASSF1and LATS2promoter hypermethylation predicted a longer overall survival (OS). Considering hypermethylation of these two promoters, Cox proportional hazard regression analysis categorized the patients into three prognostic groups: i) high risk of death (n= 24; both RASSF1and LATS2unmethylated promoters; median OS, 13 months); ii) intermediate risk of death (n = 65; RASSF1or LATS2hypermethylated promoter; median OS, 50.5 months; HR = 3.3; 95% CI, 1.6–6.4; P = 0.001); and iii) low risk of death (n = 44; both RASSF1and LATS2hypermethylated promoters; median OS, 119 months; HR = 75.1; 95% CI, 3.3–15.1; P = 0.001). We have thus highlighted a simple two-gene (RASSF1/LATS2) methylation signature as a tool to stratify different prognostic groups of patients with diffuse glioma, adding further prognostic information within the IDH-mutated group.
- Published
- 2019
- Full Text
- View/download PDF
46. Health and productivity at work: which active workstation for which benefits: a systematic review
- Author
-
Dupont, Francois, Léger, Pierre-Majorique, Begon, Mickael, Lecot, Francois, Sénécal, Sylvain, Labonté-Lemoyne, Elise, and Mathieu, Marie-Eve
- Abstract
In order to reduce sedentary behaviour at work, research has examined the effectiveness of active workstations. However, despite their relevance in replacing conventional desks, the comparison between types of active workstations and their respective benefits remains unclear. The purpose of this review article is thus to compare the benefits between standing, treadmill and cycling workstations. Search criteria explored Embase, PubMed and Web of Science databases. The review included studies concerning adults using at least two types of active workstations, evaluating biomechanical, physiological work performance and/or psychobiological outcomes. Twelve original articles were included. Treadmill workstations induced greater movement/activity and greater muscular activity in the upper limbs compared with standing workstations. Treadmill and cycling workstations resulted in elevated heart rate, decreased ambulatory blood pressure and increased energy expenditure during the workday compared with standing workstations. Treadmill workstations reduced fine motor skill function (ie, typing, mouse pointing and combined keyboard/mouse tasks) compared with cycling and standing workstations. Cycling workstations resulted in improved simple processing task speeds compared with standing and treadmill workstations. Treadmill and cycling workstations increased arousal and decreased boredom compared with standing workstations. The benefits associated with each type of active workstation (eg, standing, treadmill, cycling) may not be equivalent. Overall, cycling and treadmill workstations appear to provide greater short-term physiological changes than standing workstations that could potentially lead to better health. Cycling, treadmill and standing workstations appear to show short-term productivity benefits; however, treadmill workstations can reduce the performance of computer tasks.
- Published
- 2019
- Full Text
- View/download PDF
47. Intoxication par fer par injection intraveineuse : une série de cas sur 23 ans
- Author
-
Cellier, M., Morin, E., Lagarce, L., Deguigne, M., and Lecot, J.
- Abstract
Aucune recommandation n’existe, concernant la prise en charge des intoxications par le fer administré par voie intraveineuse (IV) et en particulier, l’indication d’une chélation. Le but de cette étude est de décrire la gravité des cas d’erreur thérapeutique (ET) par injection IV de fer et de discuter l’indication de la chélation.
- Published
- 2023
- Full Text
- View/download PDF
48. Cas de 2 syndromes sudoriens avec une présentation clinique atypique
- Author
-
Jolly-Vinas, R., Cellier, M., Deguigne, M., Mégarbane, B., Le Visage, L., Lecot, J., and Bruneau, C.
- Abstract
Décrire deux cas de syndromes sudoriens graves avec une présentation clinique atypique.
- Published
- 2023
- Full Text
- View/download PDF
49. Long-term Results of Totally Laparoscopic Aortobifemoral Bypass.
- Author
-
Lecot, F., Sabbe, T., Houthoofd, S., Daenens, K., and Fourneau, I.
- Abstract
Objectives The aim was to estimate the long-term results and patency rates of totally laparoscopic aortobifemoral bypass in aorto-iliac occlusive disease (AIOD). Methods All 87 patients who received a laparoscopic aortobifemoral bypass for AIOD on an intention to treat basis between October 2003 and October 2013 were identified. All operations were performed by the same surgical team using a totally laparoscopic technique. Demographic, pre-operative, peri-operative, and follow up variables were collected and analyzed. Patients were followed up at 1 month post-operatively and annually thereafter. Patency rates were calculated in accordance with published patency reporting standards. Results The median age was 57 years (range 40–78 years). The conversion rate was 20.6% overall. The thirty-day post-operative mortality was 1.1%. Six patients required early re-intervention. There were no graft infections. The median length hospital stay was 6 days (range 4–39 days). The mean follow up was 58.0 months (range 1–133 months). Graft limb based primary, primary assisted, and secondary patency rates were respectively 96.1%, 98.1% and 99.4% at 1 year, and 83.0%, 92.0% and 97.0% at 5 years. Conclusion Totally laparoscopic aortobifemoral bypass is a safe alternative to open surgery in selected patients, with excellent long-term patency rates, albeit at the cost of a steep learning curve. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
50. Prévalence, présentation clinique, prise en charge et suivi des calculs biliaires chez le chat: étude rétrospective multicentrique de 98 cas
- Author
-
Brunet, Audrey, Duperrier-Simond, Cyril, Amoyal, Suzanne, Bencheckroun, Ghita, Hernandez, Juan, Lecot, Lorris, Cadoré, Jean-Luc, and Krafft, Emilie
- Published
- 2023
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.