Publications by authors named "Pechoux C"

Prophylactic cranial irradiation (PCI) has long been used for SCLC to reduce the risk of brain metastases and potentially improve overall survival. Nevertheless, recent immunotherapy trials have provided limited data on its impact, as few patients were treated with PCI. The ADRIATIC trial reported improved outcomes with consolidation immunotherapy in limited-stage SCLC, and PCI was a stratification factor.

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  • The ovarian follicle's development relies on factors from both the blood and follicular cells, with extracellular vesicles (EVs) playing a crucial role in communication within the follicle.
  • Recent findings indicate that EVs are involved in follicular development and disorders like polycystic ovary syndrome (PCOS), with different protein patterns seen in EVs from follicular fluid (FF) and plasma.
  • sEVs from normal patients enhance steroid hormone secretion in granulosa cells, while those from PCOS patients fail to do so, indicating that PCOS alters granulosa cell functions, including inflammation and steroid production.
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Termination factor Rho, responsible for the main factor-dependent pathway of transcription termination and the major inhibitor of antisense transcription, is an emerging regulator of various physiological processes in microorganisms. In Gram-positive bacterium Bacillus subtilis, Rho is involved in the control of cell adaptation to starvation and, in particular, in the control of sporulation, a complex differentiation program leading to the formation of a highly resistant dormant spore. While the initiation of sporulation requires a decrease in Rho protein levels during the transition to stationary phase, the mechanisms regulating the expression of rho gene throughout the cell cycle remain largely unknown.

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  • Dairy cattle breeds face recurrent recessive genetic defects that are often undetected due to conventional observation techniques missing various conditions, particularly those without clear symptoms.
  • A new data mining framework has been developed to identify these hidden recessive defects in livestock by analyzing genomic data and comparing homozygote numbers in cattle with diverse life histories.
  • This research uncovered 33 new genetic loci linked to increased juvenile mortality, offering insights into the genetic causes of inbreeding depression, which can enhance animal welfare and reduce industry losses.
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Beyond their link to metabolic issues like type 2 diabetes, factors like lifestyle, environment, and excess weight may also influence fertility. Fibroblast growth factor 21 (FGF21), a liver-derived hormone linked to energy balance, has recently emerged as a potential player in female mammalian reproduction. In male, only two studies have described potential effects of FGF21 on fertility.

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  • * The study involved a randomized trial design with patients aged 18 or older who had inoperable stage III NSCLC and met certain health and treatment criteria, comparing an adaptive radiotherapy approach to standard treatment.
  • * Participants were divided into two groups: one received a radiation boost based on PET scans while the other group received standard radiation doses; all received chemotherapy as part of their treatment.
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Background: The efficacy of front-line pembrolizumab has been established in studies that limit treatment duration to 2 years, but decision to stop pembrolizumab after 2 years is often at physician's discretion. ATHENA is a retrospective cohort study using a comprehensive administrative database aimed firstly at exploring the optimal duration of pembrolizumab and secondly real-life prognosis factors in patients with advanced non-small cell lung cancer (NSCLC).

Methods: Using the French National Health Insurance database (SNDS), we identified patients with incident lung cancer in France from 2015 to 2022.

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Background: Leiomyosarcoma of the vena cava (LMS-VC) is a rare entity with poor oncological outcomes and a lack of histological staging prognostic factors.

Methods: Outcomes of consecutive patients operated on LMS-VC between March 2003 and May 2022, in two specialized sarcoma centers were reported.

Result: Forty-one patients were identified.

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Introduction: The international phase II single-arm LungTech trial 22113-08113 of the European Organization for Research and Treatment of Cancer assessed the safety and efficacy of stereotactic body radiotherapy (SBRT) in patients with centrally located early-stage NSCLC.

Methods: Patients with inoperable non-metastatic central NSCLC (T1-T3 N0 M0, ≤7cm) were included. After prospective central imaging review and radiation therapy quality assurance for any eligible patient, SBRT (8 × 7.

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Correlative microscopy is an important approach for bridging the resolution gap between fluorescence light and electron microscopy. Here, we describe a fast and simple method for correlative immunofluorescence and immunogold labeling on the same section to elucidate the localization of phosphorylated vimentin (P-Vim), a robust feature of pulmonary vascular remodeling in cells of human lung small arteries. The lung is a complex, soft and difficult tissue to prepare for transmission electron microscopy (TEM).

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Purpose: To assess the prognostic factors and patterns of failure of patients consecutively treated with surgery and postoperative radiation therapy (PORT) for thymic epithelial tumours (TET).

Patients And Methods: Data from 192 TET patients who were operated and received PORT at a single centre from 1990 to 2019 was retrospectively analysed.

Results: Most patients had thymoma (77 %, B247%), were classified Masaoka-Koga stage III (35 %) or IV (32 %) and had a R0 (75 %) resection.

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Introduction: Thymomas are rare intrathoracic malignancies that can relapse after surgery. Whether or not Post-Operative RadioTherapy (PORT) should be delivered after surgery remains a major issue. RADIORYTHMIC is an ongoing, multicenter, randomized phase 3 trial addressing this question in patients with completely R0 resected Masaoka-Koga stage IIb/III thymoma.

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Pulmonary arterial (PA) hypertension (PAH) is a severe cardiopulmonary disease that may be triggered by exposure to drugs such as dasatinib or facilitated by genetic predispositions. The incidence of dasatinib-associated PAH is estimated at 0.45%, suggesting individual predispositions.

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Purpose: CONVERT was a phase 3 international randomized clinical trial comparing once-daily (OD) and twice-daily (BD) radiation therapy (RT). This updated analysis describes the 6.5-year outcomes of these regimens delivered with conformal techniques.

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Lactation is an essential process for mammals. In sheep, the R96C mutation in suppressor of cytokine signaling 2 (SOCS2) protein is associated with greater milk production and increased mastitis sensitivity. To shed light on the involvement of R96C mutation in mammary gland development and lactation, we developed a mouse model carrying this mutation (SOCS2KI/KI).

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In recent years, the development of both medical imaging and new systemic agents (targeted therapy and immunotherapy) have revolutionized the field of oncology, leading to a new entity: oligometastatic disease. Adding local treatment of oligometastases to systemic treatment could lead to prolonged survival with no significant impact on quality of life. Given the high prevalence of lung oligometastases and the new systemic agents coming with increased pulmonary toxicity, this article provides a comprehensive review of the current state-of-art for radiotherapy of lung oligometastases.

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Soft tissue sarcomas are a rare and heterogeneous disease. For localized disease, treatment is based on surgery and radiotherapy with or without chemotherapy depending on risk factors. Upfront metastases are present in 7 to 20% of cases, and are localized to the lungs in most of cases.

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Desmoid tumors (DT) are rare, slow-growing, locally invasive soft tissue tumors that often pose significant therapeutic challenges. Traditional management strategies including active surveillance, surgery, radiotherapy, and systemic therapy which are associated with varying recurrence rates and high morbidity. Given the challenging nature of DT and the modest outcomes associated with current treatment strategies, there has been a growing interest in the field of γ-secretase inhibitors as a result of its action on the Wnt/β-catenin signaling pathway.

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In Gram-positive bacteria, cell wall polysaccharides (CWPS) play critical roles in bacterial cell wall homeostasis and bacterial interactions with their immediate surroundings. In lactococci, CWPS consist of two components: a conserved rhamnan embedded in the peptidoglycan layer and a surface-exposed polysaccharide pellicle (PSP), which are linked together to form a large rhamnose-rich CWPS (Rha-CWPS). PSP, whose structure varies from strain to strain, is a receptor for many bacteriophages infecting lactococci.

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Article Synopsis
  • Retroperitoneal sarcomas have a poor prognosis, and it's challenging to accurately characterize them before treatment, which leads to frequent under-grading of the tumours.
  • Researchers aimed to create a CT-based radiomics model to predict the histological type and grade of retroperitoneal leiomyosarcoma and liposarcoma, validating their model using patient data from both discovery and independent validation cohorts.
  • A total of 170 patients were part of the discovery cohort and 89 in the validation cohort, with median ages of 63 and 59 years, respectively, leading up to promising results in predicting the types and grades of sarcomas.
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