1,756 results match your criteria: "Centre Hospitalier de l'universite de Montreal CHUM[Affiliation]"

Article Synopsis
  • The KEYNOTE-671 trial showed that adding pembrolizumab to neoadjuvant chemotherapy significantly enhanced event-free survival in patients with early-stage non-small-cell lung cancer (NSCLC).
  • The trial involved randomizing nearly 800 participants across 189 medical centers, comparing treatment with pembrolizumab plus chemotherapy against a placebo plus chemotherapy.
  • Results indicated that after 36 months, overall survival was higher in the pembrolizumab group (71%) compared to the placebo group (64%), suggesting a positive impact of the immunotherapy.
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Article Synopsis
  • A phase 3 trial found that 12 months of adjuvant pembrolizumab significantly improved recurrence-free survival (RFS) and distant metastasis-free survival (DMFS) in patients with high-risk stage III melanoma compared to placebo, with longer follow-up data available.
  • With a median follow-up of 6.9 years, the pembrolizumab group showed a 50% RFS at 7 years versus 36% for the placebo group, and a 54% DMFS compared to 42% in the placebo group.
  • The results indicated consistent positive outcomes across various melanoma subtypes, confirming the long-term benefits of pembrolizumab in improving survival metrics in these patients.
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  • A study found that antibiotics can harm the good bacteria in our bodies and make cancer treatments less effective, particularly a type of treatment called immune checkpoint inhibitors (ICI).
  • Researchers tested a new treatment called DAV132 on healthy volunteers to see if it could help fix the issues caused by antibiotics, and it turned out to be safe and did not change antibiotic levels too much.
  • In mice tests, DAV132 helped keep the good bacteria safe and improved the effectiveness of cancer treatments compared to those given antibiotics alone. This means DAV132 might be a good way to protect the bacteria and help cancer patients who take antibiotics.
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  • Intervertebral disc degeneration (IDD) is a common health issue where inflammation plays a significant role, and molecules in the bloodstream may affect this condition.
  • This study collected plasma samples and clinical data from 83 patients with IDD before their spine surgery to find biomarkers that could indicate specific spinal problems and predict recovery outcomes.
  • Findings revealed that certain plasma proteins, especially Neurofilament Light chain (NfL) and CCL22, could help predict a patient’s recovery two months after surgery, highlighting their potential as biomarkers in assessing IDD recovery.
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Trial selection criteria should not be used for clinical decisions and recommendations: the thrombectomy trials example.

Neurochirurgie

November 2024

University of Alberta Hospital, Division of Neurosurgery, Department of Surgery, Mackenzie Health Sciences Centre, Edmonton, Alberta, Canada.

Background: Despite multiple calls for more inclusive studies, most clinical trial eligibility criteria remain too restrictive. Thrombectomy trials have been no exception.

Methods: We review the landmark trials that have shown the benefits of thrombectomy, their eligibility criteria, and consequences on clinical practice.

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Article Synopsis
  • The Prostate Cancer Study 5 (PCS5) aimed to compare the effectiveness and side effects of two types of radiotherapy: conventional fractionated radiotherapy (CFRT) and hypofractionated radiotherapy (HFRT) for high-risk prostate cancer patients.
  • The study included 329 patients who were randomly assigned to receive either CFRT or HFRT, with the primary focus on comparing toxicity and secondary outcomes like survival rates over a 5-year median follow-up.
  • Results showed no significant differences in overall survival or other survival metrics between the two treatments, suggesting that HFRT could be adopted as a new standard treatment option for high-risk patients.
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We studied three brothers and a maternal half-brother featuring global developmental delay, mild to moderate intellectual disability, epilepsy, microcephaly, and strabismus. All had bilateral perisylvian and perirolandic polymicrogyria, while some also had malformations of the hippocampus (malrotation and dysplasia), cerebellum (heterotopias and asymmetric aplasia), corpus callosum dysgenesis, and brainstem asymmetric dysplasia. Exome sequencing showed that all four patients had a novel variant (c.

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Objective: The purpose of this study was to determine and compare the performance of pre-treatment clinical risk score (CRS), radiomics models based on computed (CT), and their combination for predicting time to recurrence (TTR) and disease-specific survival (DSS) in patients with colorectal cancer liver metastases.

Methods: We retrospectively analyzed a prospectively maintained registry of 241 patients treated with systemic chemotherapy and surgery for colorectal cancer liver metastases. Radiomics features were extracted from baseline, pre-treatment, contrast-enhanced CT images.

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Quantitative ultrasound (QUS) and ultrasound-based elastography techniques are emerging as non-invasive effective methods for assessing chronic liver disease. They are more accurate than B-mode imaging alone and more accessible than MRI as alternatives to liver biopsy. Early detection and monitoring of diffuse liver processes such as steatosis, inflammation, and fibrosis play an important role in guiding patient management.

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How science can harm: The true history of thrombectomy trials.

Neurochirurgie

November 2024

University of Alberta Hospital, Division of Neurosurgery, Department of Surgery, Mackenzie Health Sciences Centre, Edmonton, Alberta, Canada.

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Understanding why restrictive trial eligibility criteria are inappropriate.

Neurochirurgie

November 2024

University of Alberta Hospital, Division of Neurosurgery, Department of Surgery, Mackenzie Health Sciences Centre, Edmonton, Alberta, Canada.

Background: An important difference between explanatory and pragmatic clinical trials concerns eligibility criteria. Eligibility criteria are restrictive in explanatory trials, while pragmatic trials are more inclusive or even all-inclusive.

Methods: To better understand the diverging views regarding eligibility criteria, we examine the contrast between theoretical and clinical medicine, and 3 different research contexts: laboratory research, population studies and clinical trials.

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Acyl-coenzyme a binding protein (ACBP) - a risk factor for cancer diagnosis and an inhibitor of immunosurveillance.

Mol Cancer

September 2024

Centre de Recherche des Cordeliers, Université Paris Cité, Sorbonne Université, Equipe labellisée par la Ligue contre le cancer, Inserm U1138, Paris, France.

Article Synopsis
  • Higher plasma levels of ACBP/DBI, linked to age and obesity, are associated with an increased risk of cancer, especially in patients with genetic predispositions like BRCA1/2 or TP53 mutations.
  • In studies, elevated ACBP/DBI levels were predictive of future cancer development, particularly lung cancer, while neutralization of ACBP/DBI slowed tumor growth and enhanced the effects of chemoimmunotherapy in animal models.
  • The research suggests that ACBP/DBI functions as an immune suppressor and indicates that targeting it may improve cancer immunotherapy outcomes.
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Giant metastatic mixed-type spinal ependymoma presenting with hydrocephalus.

Radiol Case Rep

November 2024

Division of Neurosurgery, Department of Surgery, Sacré-Coeur Hospital, Montréal, Quebec, Canada.

Ependymomas are rare nervous system tumors that can arise anywhere in the neuraxis. While having a high propensity for leptomeningeal dissemination, retrograde dissemination (from the spine to the CNS) remains infrequent. We describe the case of a 31-year-old female who presented with hydrocephalus secondary to an intracranial leptomeningeal metastasis of a giant spinal ependymoma with mixed (classic and myxopapillary) histopathologic features, successfully treated with surgical resection and radiotherapy of the entire neuraxis.

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Article Synopsis
  • Plasma cell leukemia (PCL) is a rare and aggressive blood cancer with two forms: primary (pPCL) and secondary (sPCL), but information on it is limited due to its low incidence.* -
  • A study involving 99 patients found that pPCL has a significantly better survival rate and progression-free survival compared to sPCL, which shows very short survival times and tends to arise from high-risk multiple myeloma cases.* -
  • The research indicates no improvement in survival rates for PCL over time and emphasizes the critical need for better treatment strategies to address this serious condition.*
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Intravenous alteplase versus tenecteplase in patients with acute posterior circulation strokes: A secondary analysis from the AcT randomized controlled trial.

J Stroke Cerebrovasc Dis

November 2024

Department of Clinical Neurosciences, University of Calgary, Calgary, Canada; Department of Internal Medicine-Neurology Division, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada.

Article Synopsis
  • The study examines the safety and effectiveness of intravenous tenecteplase compared to alteplase in treating patients with acute ischemic strokes in the posterior circulation.
  • A post-hoc analysis of over 1,500 patients found no significant differences in outcomes between the two treatments in terms of recovery, symptomatic intracerebral hemorrhage, and mortality.
  • Both medications showed similar rates of successful reperfusion and recanalization, suggesting that tenecteplase can be as effective as alteplase for this type of stroke without increased risks.
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Introduction: Despite the growing body of literature on sacral neuromodulation (SNM) outcomes, research focusing on male patients remains limited and often represented by small cohorts nested within a larger study of mostly women. Herein, we evaluated the outcomes of SNM in a male-only cohort with overactive bladder (OAB), fecal incontinence (FI), chronic bladder pain, and neurogenic lower urinary tract dysfunction (NLUTD).

Materials And Methods: This retrospective cohort study included 64 male patients who underwent SNM insertion between 2013 and 2021 at a high-volume tertiary center.

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Introduction: In stroke patients with acute large vessel occlusion, endovascular therapy (EVT) may be performed with or without sedation. Our aim is to describe self-reported intraprocedural comfort in patients undergoing EVT depending on sedation type.

Methods: We performed a prospective observational single-center study of patients undergoing EVT.

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Introduction: Smokers frequently display respiratory symptoms despite the fact that their pulmonary function tests (PFTs) can be normal. Quantitative lung ventilation single-photon emission computed tomography (SPECT/CT) can provide a quantification of lung ventilatory homogeneity and could prove useful as an early marker of airway disease in smokers. We measured the effects of smoking on regional ventilation distribution in subjects with normal lung function and evaluated whether ventilation distribution in these subjects is related to lung function tests results and clinical symptoms.

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Breast flap remodeling is a common procedure after breast reconstruction. We present a unique approach to breast reduction using a superomedial pedicle inverted "T" technique in patients with previous free deep inferior epigastric perforator (DIEP) flap breast reconstruction, not previously reported. Breast reduction can be a valid option for reshaping breasts after free DIEP flap reconstruction.

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Background: HIV drug resistance (HIV-DR) may jeopardize the benefit of antiretroviral therapy (ART) in treatment and prevention. This study utilized viral phylogenetics to resolve the influence of transmission networks on sustaining the spread of HIV-DR in Quebec spanning 2002 to 2022.

Methods: Time trends in acquired (ADR) and transmitted drug resistance (TDR) were delineated in treatment-experienced ( = 3500) and ART-naïve persons ( = 6011) with subtype B infections.

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Poly (ADP-Ribose) Polymerase (PARP) inhibitors have changed the outcomes and therapeutic strategy for several cancer types. As a targeted therapeutic mainly for patients with mutations, PARP inhibitors have commonly been exploited for their capacity to prevent DNA repair. In this review, we discuss the multifaceted roles of PARP-1 and PARP-2 beyond DNA repair, including the impact of PARP-1 on chemokine signalling, immune modulation, and transcriptional regulation of gene expression, particularly in the contexts of angiogenesis and epithelial-to-mesenchymal transition (EMT).

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The insula is often considered the fifth lobe of the brain and is increasingly recognized as one of the most connected regions in the brain, with widespread connections to cortical and subcortical structures. As a follow-up to our previous tractography work, we investigated the resting-state functional connectivity (rsFC) profiles of insular subregions and assessed their concordance with structural connectivity. We used the CONN toolbox to analyze the rsFC of the same 19 insular regions of interest (ROIs) we used in our prior tractography work and regrouped them into six subregions based on their connectivity pattern similarity.

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Concerns exist regarding increased toxicities, including endocrine therapy toxicity, with concurrent radiation and endocrine therapy in early breast cancer (EBC). We present a pragmatic, randomized trial comparing concurrent versus sequential endocrine and radiotherapy in hormone-responsive EBC. In this multicenter trial, patients were randomized to receive adjuvant endocrine therapy concurrent with, or sequential to, radiotherapy.

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Aims: The prevalence and associations of overweight and obesity in Canadian adult people living with type 1 diabetes (PWT1D) are poorly documented. In a cohort of PWT1D patients, this study assesses (i) overweight and obesity frequencies and associated PWT1D clinicodemographic characteristics, (ii) diabetes characteristics, and (iii) the use of noninsulin adjunctive agents.

Materials And Methods: Cross-sectional analysis of self-reported data from the BETTER registry: 1091 adult PWT1D (aged 44.

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