Publications by authors named "Villeneuve L"

Spinal schwannomas are benign, slow-growing tumors originating from Schwann cells, constituting 25 to 30% of primary spinal neoplasms and most frequently arise from sensory nerve roots in the cervical or thoracic spine. 1 2 3 Although generally nonaggressive, their growth can result in significant neurological deficits due to compression of surrounding structures such as the spinal cord or nerve roots. 4 5 Patients commonly present with localized pain, muscle weakness, and sensory disturbances.

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Background: No guidelines exist regarding the management of the uninvolved uterus or adnexa (fallopian tubes and/or ovaries) in patients with peritoneal metastases (PM) from non-gynecologic malignancies. It is unclear whether salpingo-oophorectomy, hysterectomy, or both should be performed when a complete pelvic peritonectomy is otherwise warranted.

Methods: A 25-item electronic survey was sent to 225 surgeons worldwide who routinely perform cytoreductive surgery (CRS) plus hyperthermic intraperitoneal chemotherapy (HIPEC).

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The 2022 PSOGI (Peritoneal Surface Oncology Group International) and RENAPE (French Network for Rare Peritoneal Malignancies) consensus on hyperthermic intraperitoneal chemotherapy (HIPEC) was a comprehensive effort aimed at standardizing treatment protocols for various peritoneal malignancies. This initiative is critical due to the wide range of technical variations in HIPEC procedures and the resulting need for standardization to ensure consistent and effective patient care and meaningful audit of multicenter data.

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has emerged as a significant healthcare-associated pathogen due to its multidrug-resistant nature. Ongoing constraints in the discovery and provision of new antifungals create an urgent imperative to design effective remedies to this pressing global blight. Herein, we screened a chemical library and identified aryl-carbohydrazide analogs with potent activity against both and the most prevalent human fungal pathogen, .

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Fragmentation/loss of the structural protein elastin represents the precipitating event translating to aortic expansion and subsequent aneurysm formation. The present study tested the hypothesis that greater protein expression of tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) and neointimal growth secondary to a reduction of medial elastin content represent sex-dependent events limiting aortic vessel expansion in females. TIMP-1 protein levels were higher in the ascending aorta of female versus male patients diagnosed with a bicuspid aortic valve (BAV).

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Article Synopsis
  • The PRECINCT study is a multicenter analysis of surgical documentation and disease incidence in patients with peritoneal tumors, focusing on the surgical peritoneal cancer index (sPCI) and its variations across centers.
  • Among 707 enrolled patients from September 2020 to December 2021, the study found that different morphological terminologies were used to describe peritoneal lesions, with the most common being "normal peritoneum," "tumor nodules," and "confluent disease."
  • The research revealed that the incidence of pathologically confirmed disease was higher in cases with more severe lesion scores and suggested that using frozen section analysis could be beneficial, indicating the need for larger studies correlating imaging and pathology.
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Context: Chlordecone (CLD) is a carcinogenic organochlorine pesticide. CLD was shown to disturb the activity of cardiac Na-K-ATPase and Ca-Mg-ATPase. Conditions affecting these transmembrane pumps are often associated with cardiac arrhythmias (CA).

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Lymphatic vessels are essential for preventing the accumulation of harmful components within peripheral tissues, including the artery wall. Various endogenous mechanisms maintain adequate lymphatic function throughout life, with platelets being essential for preserving lymphatic vessel integrity. However, since lymph lacks platelets, their impact on the lymphatic system has long been viewed as restricted to areas where lymphatics intersect with blood vessels.

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Background: Mesothelioma is a rare and aggressive malignant neoplasm arising from mesothelial cells, which occasionally manifests recurrent fusions. EWSR1/FUS-CREB, YY1, MAP3K8, NR4A3, and ALK-rearranged proliferations have been reported in limited series with no clear histological or clinical correlations, limiting clinicians' ability to assess prognosis and integrate these new entities into therapeutic decisions. The aim of this study was to better characterize these rearranged proliferations histologically, molecularly, and clinically.

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Objective: To analyze the reasons for stopping pressurized intraperitoneal aerosolized chemotherapy (PIPAC) delivered for unresectable peritoneal surface malignancies (PSM) and to determine survival in a large patient cohort of an experienced PIPAC center.

Background: PIPAC alone or combined with systemic chemotherapy was developed to palliatively treat unresectable PSM. Safety, tolerance and promising survival results were already reported, but the reasons for stopping treatment remain unclear and the influence of the number of PIPAC procedures on prognosis has not been evaluated.

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This manuscript reports the results of an international consensus on technologies of hyperthermic intraperitoneal perioperative chemotherapy (HIPEC) performed with the following goals: To provide recommendations for the technological parameters to perform HIPEC. To identify the role of heat and its application forms in treating peritoneal metastases. To provide recommendations regarding the correct dosimetry of intraperitoneal chemotherapy drugs and their carrier solutions.

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Background: The combination of cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) constitutes the established standard of care for pseudomyxoma peritonei patients. However, the role of HIPEC lacks validation through randomized trials, leading to diverse proposed treatment protocols. This consensus seeks to standardize HIPEC regimens and identify research priorities for enhanced clarity.

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Since its creation in 2010, the progressive structuration of the RENAPE network (Réseau national de prise en charge des tumeurs rares du péritoine) supported by the "Institut national du cancer" and the "Direction générale de l'offre de soins", allowed the optimization of the healthcare system involved in the management of the rare cancers of the peritoneum. In this setting, the RENA-PATH group has also been reinforced, notably by its recognized diagnostic expertise in pathology and its interface with the MESOPATH group. Moreover RENAPE and RENA-PATH led to guidelines diffusion through the integration, in 2019, to the ``Thesaurus National de Cancérologie Digestive'' (TNCD) and to post-university medical education programs.

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Objective: The goal of this study was to evaluate the impact of endoscopic third ventriculostomy (ETV) failure on subsequent risk of ventriculoperitoneal shunt (VPS) placement.

Methods: A retrospective chart review was performed to identify pediatric patients receiving ETV followed by a VPS at Oklahoma Children's Hospital between January 1, 2016, and December 31, 2021. A control group of patients receiving a VPS alone was also gathered.

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Article Synopsis
  • - Epithelioid hemangioendothelioma (EHE) is an uncommon vascular tumor, often found in soft tissue, and this report highlights a unique case of EHE affecting the thoracic spine with lung metastasis.
  • - A 36-year-old man experienced severe symptoms like leg weakness and urinary issues, leading to successful surgical removal of the tumor and improved neurological status.
  • - There is no standardized treatment for EHE yet; however, surgical intervention shows promise, especially for cases causing nerve compression, while the use of chemotherapy and radiation remains uncertain and requires more research.
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Leigh syndrome French Canadian type (LSFC) is a recessive neurodegenerative disease characterized by tissue-specific deficiency in cytochrome c oxidase (COX), the fourth complex in the oxidative phosphorylation system. LSFC is caused by mutations in the leucine rich pentatricopeptide repeat containing gene (). Most LSFC patients in Quebec are homozygous for an A354V substitution that causes a decrease in the expression of the LRPPRC protein.

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Background: Acute respiratory distress syndrome (ARDS) is responsible for 400,000 deaths annually worldwide. Few improvements have been made despite five decades of research, partially because ARDS is a highly heterogeneous syndrome including various types of aetiologies. Lower airway microbiota is involved in chronic inflammatory diseases and recent data suggest that it could also play a role in ARDS.

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Background: High expression of the glycosyltransferase UGT2B17 represents an independent adverse prognostic marker in chronic lymphocytic leukemia (CLL). It also constitutes a predictive marker for therapeutic response and a drug resistance mechanism. The key determinants driving expression of the UGT2B17 gene in normal and leukemic B-cells remain undefined.

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Article Synopsis
  • Heart failure (HF) is associated with chronic inflammation and involves two types of neutrophils: high-density neutrophils (HDNs) and low-density neutrophils (LDNs), with LDNs often increasing in various diseases and releasing inflammatory substances.
  • This study isolated and measured these neutrophil subtypes and their activities in individuals with HF, including both HFrEF and HFpEF patients, compared to healthy volunteers.
  • Results showed significantly higher counts of both HDNs and LDNs in HF patients, particularly those with HFpEF, linking LDN counts to increased inflammatory markers and the formation of neutrophil extracellular traps (NETs).
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Aims: Right heart disease (RHD), characterized by right ventricular (RV) and atrial (RA) hypertrophy, and cardiomyocytes' (CM) dysfunctions have been described to be associated with the incidence of atrial fibrillation (AF). Right heart disease and AF have in common, an inflammatory status, but the mechanisms relating RHD, inflammation, and AF remain unclear. We hypothesized that right heart disease generates electrophysiological and morphological remodelling affecting the CM, leading to atrial inflammation and increased AF susceptibility.

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Background: Several strategies were implemented during the Covid-19 pandemic to enhance residency training and patient care.

Objective: This study aims to assess the post-pandemic landscape of neurosurgical training and practice.

Method: A survey consisting of 28 questions examining the challenges faced in neurosurgery and the adaptive measures was conducted among US neurosurgery residents from May 2022 to May 2023.

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Angiopoietin-like 2 (ANGPTL2) is a pro-inflammatory and pro-oxidant circulating protein that predicts and promotes chronic inflammatory diseases such as atherosclerosis in humans. Transgenic murine models demonstrated the deleterious role of ANGPTL2 in vascular diseases, while deletion of ANGPTL2 was protective. The nature of its role in cardiac tissues is, however, less clear.

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Article Synopsis
  • A study evaluated the effectiveness of cytoreductive surgery (CRS) combined with hyperthermic intraperitoneal chemotherapy (HIPEC) for treating ovarian pseudomyxoma peritonei (OPMP), a rare condition without established treatment protocols.
  • The research involved 15 patients, revealing that 60% achieved complete cytoreduction, and tumors were classified into different groups based on their histological characteristics, with varying outcomes in disease-free survival.
  • The findings suggested that complete CRS/HIPEC may offer favorable long-term results for OPMP patients, especially for those with particular tumor origins linked to teratomas.
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