Publications by authors named "Poncet J"

Article Synopsis
  • * Findings showed that younger patients with fewer comorbidities had much better access to a Specialized Haematology Unit (SHU), leading to more favorable treatment outcomes compared to older or more severely ill patients.
  • * The research concluded that timely access to SHU is crucial for effective diagnosis and treatment of AML, emphasizing the need for improved care pathways, especially for the most deprived patients.
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There are limited population-based studies of hairy cell leukemia (HCL), a rare chronic lymphoproliferative disorder of B-cells. We conducted a population-based study that included all patients diagnosed with HCL between 1996 and 2016 in Western Normandy. Recorded data focused on medical history, clinical presentation, biological results, treatment modalities in the first line and in relapsed/refractory patients and the occurrence of secondary malignancies.

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Objectives: To describe steroid-sparing in rheumatoid arthritis (RA) patients treated with tocilizumab (TCZ).

Methods: To evaluate the proportion of RA patients treated with more than 5 mg of prednisone (or equivalent)/day and starting TCZ who can receive less than 5 mg/day after 12 months without intensification of disease-modifying anti-rheumatic drugs (DMARDs), we conducted a non-interventional, multicentre, prospective study from 2011 to 2013. We included patients with moderate-to-severe RA, >18 years old, starting TCZ and receiving corticosteroids (GCs) at a dose greater than 5 mg/day of prednisone for at least 3 months.

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The Superfluid High REynolds von Kármán experiment facility exploits the capacities of a high cooling power refrigerator (400 W at 1.8 K) for a large dimension von Kármán flow (inner diameter 0.78 m), which can work with gaseous or subcooled liquid (He-I or He-II) from room temperature down to 1.

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Corynespora Leaf Fall (CLF) is a major disease of rubber tree (Hevea brasiliensis) caused by the Ascomycota Corynespora cassiicola. Here we describe the cloning and characterization of a gene encoding cassiicolin (Cas), a glycosylated cystein-rich small secreted protein (SSP) identified as a potential CLF disease effector in rubber tree. Three isolates with contrasted levels of aggressiveness were analyzed comparatively.

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We present a new cryogenic wind tunnel facility developed to study the high Reynolds number developed classical or quantum turbulence in liquid (4)He. A stable inertial round jet flow with a Reynolds number of 4 × 10(6) can be sustained in both He I and He II down to a minimum temperature of 1.7 K.

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Objective: Study the results of surgical treatment of large vestibular schwannomas.

Material And Methods: Between January 1995 and December 2005, 87 stage III and IV unilateral vestibular schwannomas (Koos classification) were operated.

Results: The approach used was for the most part translabyrinthine.

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Introduction: Surgical removal of giant cystic vestibular schwannomas is difficult because of adherences between the cyst membrane, brainstem, and the VII-VIII nerve complex. The recurrence of the cyst is frequent and requires reoperation. The aim of this study was to analyze the role of the palliative cystoperitoneal shunt in giant cystic vestibular schwannomas.

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Endotracheal intubation can induce iatrogenic laryngeal and tracheal complications, particularly when the intubation lasts for a long time. The ENT pratician's job is not only to cure the laryngeal sequelaes but also to prevent and diagnose them. Authors report three atypical cases of laryngeal and tracheal post-intubation complications (laryngeal bilateral immobility, interarythenoidal synechia, oesotracheal fistulae) and discuss them regarding medical literature data.

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Objective: The aim of the study was to compare the efficiency, safety, and cost of the different methods of hemostasis (conventional hemostasis versus LigaSure vessel sealing system [LVSS] versus harmonic scalpel) currently available for thyroid surgery.

Study Design: Randomized, controlled trial.

Setting: The study was conducted from September 2007 to December 2008 in a university hospital.

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The spleen tyrosine kinase Syk has predominantly been studied in hematopoietic cells in which it is involved in immunoreceptor-mediated signaling. Recently, Syk expression was evidenced in numerous nonhematopoietic cells and shown to be involved in tumor formation and progression. The Syk downstream signaling effectors in nonhematopoietic cells remain, however, to be uncovered, and were investigated using MS-based quantitative phosphoproteomics.

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The nonreceptor tyrosine kinase Src is frequently overexpressed and/or activated in human colorectal carcinoma (CRC), and its increased activity has been associated with a poor clinical outcome. Src has been implicated in growth and invasion of these cancer cells by still not well-known mechanisms. Here, we addressed Src oncogenic signaling using quantitative phosphoproteomics.

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One of the most conserved features of the invasion process in Apicomplexa parasites is the formation of a moving junction (MJ) between the apex of the parasite and the host cell membrane that moves along the parasite and serves as support to propel it inside the host cell. The MJ was, up to a recent period, completely unknown at the molecular level. Recently, proteins originated from two distinct post-Golgi specialised secretory organelles, the micronemes (for AMA1) and the neck of the rhoptries (for RON2/RON4/RON5 proteins), have been shown to form a complex.

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Objective Of The Study: To evaluate the long term functional and esthetical results of the patients who underwent a facial palsy rehabilitation surgery by a hypoglossal-facial anastomosis.

Patients And Methods: In this retrospective study, 11 patients (8 males and 3 females) with a complete facial palsy (grade VI House-Brackmann) due to an otoneurosurgery performed between 1985 and 2006 (6 vestibular schwannomas, 1 facial schwannoma of the geniculate ganglion and 4 meningiomas) were evaluated (with the help of an auto-questionnary, a physical exam and electromyography) between July and september in 2008.

Results: The voluntary palpebral closure was obtained in 8 cases out 11 (grade III of House-Brackmann).

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Subacute cervical lymphadenopathy among young adults may be of an infectious or malignant aetiology. We report two cases of young males with chronic cervical lymphadenopathy. A diagnosis of Cat scratch disease (CSD) was made by serological and molecular studies.

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Human cerebrospinal fluid (CSF) proteome is actively investigated to identify relevant biomarkers and therapeutic targets for neurological disorders. Approximately 80% of CSF proteome originate from plasma, yielding a high dynamic range in CSF protein concentration and precluding identification of potential biomarkers originating from CNS cells. Here, we have adapted the most complete multiaffinity depletion method available to remove 20 abundant plasma proteins from a CSF pool originating from patients with various cognitive disorders.

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The Plasmodium falciparum food vacuole (FV) is a lysosome-like organelle where erythrocyte hemoglobin digestion occurs. It is a favorite target in the development of antimalarials. We have used a tandem mass spectrometry approach to investigate the proteome of an FV-enriched fraction and identified 116 proteins.

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In this study, we identified the multifunctional protein GC1q-R as a novel vasopressin V(2) receptor (V(2)R) interacting protein. For this purpose, we have developed a proteomic approach combining pull-down assays using a cyclic peptide mimicking the third intracellular loop of V(2)R as a bait and mass spectrometry analyses of proteins isolated from either rat or human kidney tissues or the HEK 293 cell line. Co-immunoprecipitation of GC1q-R with the c-Myc-tagged h-V(2)R expressed in a HEK cell line confirmed the existence of a specific interaction between GC1q-R and the V(2) receptor.

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Xenorhabdus nematophila, a member of the Enterobacteriaceae, kills many species of insects by strongly depressing the immune system and colonizing the entire body. A peptide cytotoxin has been purified from X. nematophila broth growth, and the cytolytic effect on insect immunocytes and hemolytic effect on mammalian red blood cells of this toxin have been described (Ribeiro, C.

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18F-Fluorodeoxyglucose positron emission tomography (PET) is an imaging modality which is becoming increasingly esential in oncology, especially in the management of head and neck squamous cell carcinomas (SCC). The most common uses of the PET are listed in this thematic study: initial staging, cervical lymph node metastases from an unknown primary tumor and post-therapeutic follow-up. The advantages and drawbacks of this imaging tool are exposed here according to both our experience and data from the literature.

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Cassiicolin, a phytotoxin produced by the necrotrophic fungus Corynespora cassiicola, was purified to homogeneity from a rubber tree isolate. The optimized protocol involves reverse phase chromatography followed by size exclusion chromatography, with monitoring of the toxicity on detached rubber tree leaves. Cassiicolin appeared to be a peptide composed of 27 amino acids, glycosylated on the second residue, with a N-terminal pyroglutamic acid and 6 cysteines involved in disulfide bonds.

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The cytoplasmic Leishmania silent information regulator 2 (SIR2)RP1 protein is essential for parasite growth and survival and constitutes an attractive therapeutic target. Little information is available on putative substrate(s) and/or partner(s) that could shed light on the pathways in which this enzyme plays a role. We carried out co-immunoprecipitation experiments on the soluble fractions of wild-type and parasites overexpressing LmSIR2RP1 and found that the essential chaperone heat shock protein (HSP) 83, the Leishmania ortholog of the mammalian HSP90, constantly co-immunoprecipitated with LmSIR2RP1.

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Four rhoptry proteins (ROP) of Toxoplasma gondii previously identified with mAb have been affinity purified and analyzed by MS; the data obtained allowed the genomic sequences to be assigned to these proteins. As previously suggested for some of them by antibody crossreactivity, these proteins were shown to belong to a family, the prototype of which being ROP2. We describe here the proteins ROP2, 4, 5, and 7.

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