Publications by authors named "J-M Meier"

Background: Transcatheter aortic valve replacement (TAVR) pushes aside the diseased native aortic valve and creates a native neo-sinus bordered by the aortic root wall and the displaced native valve. There are limited data on the progression of native valve disease post-TAVR and no previous analysis of the native neo-sinus.

Methods: Native aortic valves and native neo-sinus explants obtained post-TAVR were evaluated histologically (hematoxylin and eosin, Movat pentachrome, and Martius Scarlet Blue stains) and by immunohistochemistry (TGF-β1 [transforming growth factor-beta 1], FAP [fibroblast activation protein], and ALP [alkaline phosphatase]) to assess disease mechanisms.

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Background: In the prehospital tranexamic acid (TXA) for traumatic brain injury (TBI) trial, TXA administered within 2 hours of injury in the out-of-hospital setting did not reduce mortality in all patients with moderate/severe traumatic brain injury (TBI). We examined the association between TXA dosing arms, neurologic outcome, and mortality in patients with intracranial hemorrhage (ICH) on computed tomography (CT).

Methods: This was a secondary analysis of the Prehospital Tranexamic Acid for TBI Trial ( ClinicalTrials.

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Objectives: The aims of the study were to compare the consumption of blood products before and after the implementation of a bleeding management algorithm in patients undergoing liver transplantation and to determine the feasibility of a multicentre, randomized study.

Background: Liver transplantation remains the only curative therapy for patients with end-stage liver disease, but it carries a high risk of surgical bleeding.

Materials And Methods: Retrospective study of patients treated before (group 1) and after (group 2) implementation of a haemostatic algorithm guided by viscoelastic testing, including use of lyophilized coagulation factor concentrates ().

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Background And Objectives: The objective was to characterize the acute effects of concussion (a subset of mild traumatic brain injury) on serum interleukin (IL)-6 and IL-1 receptor antagonist (RA) and 5 additional inflammatory markers in athletes and military service academy members from the Concussion Assessment, Research, and Education Consortium and to determine whether these markers aid in discrimination of concussed participants from controls.

Methods: Athletes and cadets with concussion and matched controls provided blood at baseline and postinjury visits between January 2015 and March 2020. Linear models investigated changes in inflammatory markers measured using Meso Scale Discovery assays across time points (baseline and 0-12, 12-36, 36-60 hours).

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Background: Targeted therapy (TT) of BRAF V600 mutated unresectable melanoma with inhibitors of the MAPK pathway achieves response rates of up to 76%, but most patients develop secondary resistance. Albeit TT is strikingly efficacious during the first days of treatment, even in advanced cases, long-term survival is highly unlikely, especially in patients with unfavorable baseline characteristics like elevated lactate dehydrogenase (LDH). In patients treated with anti-PD-1 immune checkpoint inhibitors, elevated baseline metastatic growth rate (MGR) was the most important prognostic factor.

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Article Synopsis
  • This study investigated the relationship between blood-based neural biomarkers and white matter neuroimaging biomarkers in collegiate athletes with sport-related concussions over one week after injury.
  • The research involved analyzing data from 77 athletes, using clinical assessments, blood samples, and diffusion tensor imaging (DTI) at three different time points post-injury.
  • Findings indicated that total tau levels correlated significantly with microstructural changes in white matter, particularly in specific brain tracts, while the other biomarkers showed varied associations depending on the timing of assessment.
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Background And Objectives: The clinical and physiologic time course for recovery following pediatric mild traumatic brain injury (pmTBI) remains actively debated. The primary objective of the current study was to prospectively examine structural brain changes (cortical thickness and subcortical volumes) and age-at-injury effects. A priori study hypotheses predicted reduced cortical thickness and hippocampal volumes up to 4 months postinjury, which would be inversely associated with age at injury.

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Prioritizing molecules for synthesis is a key role of computational methods within medicinal chemistry. Multiple tools exist for ranking molecules, from the cheap and popular molecular docking methods to more computationally expensive molecular-dynamics (MD)-based methods. It is often questioned whether the accuracy of the more rigorous methods justifies the higher computational cost and associated calculation time.

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Background: Perioperative anemia has been associated with increased risk of red blood cell transfusion and increased morbidity and mortality after surgery. The optimal approach to the diagnosis and management of perioperative anemia is not fully established.

Objective: To develop consensus recommendations for anemia management in surgical patients.

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Article Synopsis
  • - The study explored the effectiveness of cemiplimab as a neoadjuvant therapy for patients with resectable cutaneous squamous-cell carcinoma, aiming to determine its impact on achieving a pathological complete response before surgery.
  • - Out of 79 participants, 51% achieved a pathological complete response, while 68% showed a positive response on imaging; these outcomes suggest cemiplimab is effective for this patient group.
  • - However, 87% of patients experienced adverse events, highlighting the need for careful monitoring and further research to balance treatment benefits with potential side effects.
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Aims: The aim of this TeleCheck-AF sub-analysis was to evaluate motivation and adherence to on-demand heart rate/rhythm monitoring app in patients with atrial fibrillation (AF).

Methods And Results: Patients were instructed to perform 60 s app-based heart rate/rhythm recordings 3 times daily and in case of symptoms for 7 consecutive days prior to teleconsultation. Motivation was defined as number of days in which the expected number of measurements (≥3/day) were performed per number of days over the entire prescription period.

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Mutations in the gene are the cause of an ultra-rare neurological disorder characterized by intellectual disability, impaired speech, motor delay, and hypotonia evolving to spasticity, central sleep apnea, and premature death (SPG49 or HSAN9; OMIM: 615031). Little is known about the biological function of TECPR2, and there are currently no available disease-modifying therapies for this disease. Here we describe implementation of an antisense oligonucleotide (ASO) exon-skipping strategy targeting c.

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Aims: To evaluate the efficacy and safety of oral semaglutide versus comparators by patient characteristic subgroups in patients with type 2 diabetes.

Materials And Methods: Change from baseline in glycated haemoglobin (HbA1c) and body weight, and achievement of HbA1c <7.0% with oral semaglutide 7 mg, oral semaglutide 14 mg, flexibly dosed oral semaglutide (flex) and comparators were assessed across baseline subgroups (age, race, ethnicity, diabetes duration, body mass index and HbA1c) from the PIONEER programme.

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Article Synopsis
  • * Results indicated that tumors with TERT promoter mutations showed significantly improved progression-free survival (PFS) and overall survival (OS) compared to wild-type tumors in both the discovery and validation cohorts.
  • * Median PFS for TERT promoter-mutant tumors was approximately 8.9 months, while wild-type tumors had a median of 5.5 months; OS was about 33.6 months for mutant vs. 17.0 months for wild-type.
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Background: Treatment for patients with recurrent ovarian cancer has been mainly based on systemic therapy. The role of secondary cytoreductive surgery is unclear.

Methods: We randomly assigned patients with recurrent ovarian cancer who had a first relapse after a platinum-free interval (an interval during which no platinum-based chemotherapy was used) of 6 months or more to undergo secondary cytoreductive surgery and then receive platinum-based chemotherapy or to receive platinum-based chemotherapy alone.

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Background: NF1-mutated tumours represent a small subset (10-15%) of melanomas, not sufficiently analysed in large clinical cohorts. This study investigated the largest multicentre collection of NF1-mutated melanomas to date.

Methods: This study analysed a multicentre tumour tissue sample cohort from 266 patients with NF1-mutated melanoma.

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  • - The study investigates cardiac troponin levels in patients suspected of having non-ST-segment-elevation myocardial infarction (NSTEMI) to validate a proposed cutoff for further triage and improve patient assessment in emergency settings.
  • - Out of 2,076 patients surveyed, 1,512 were either ruled out or ruled in for NSTEMI using existing guidelines, while 564 patients fell into an 'observe-zone,' revealing a prevalence of NSTEMI in that group.
  • - A new criterion was derived from the results, suggesting that a 3-hour hs-cTnT concentration of less than 15 ng/L and a change of less than 4 ng/L could effectively rule out NSTEMI in 99.
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Background: Few studies have examined primary care management for acute sciatica, including referral to physical therapy.

Objective: To evaluate whether early referral to physical therapy reduced disability more than usual care (UC) alone for patients with acute sciatica.

Design: Randomized controlled clinical trial.

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Background: The degree to which malnutrition impacts perioperative outcomes in the elderly emergency surgery (ES) patient remains unknown. We aimed to study the relationship between malnutrition, as measured by the Geriatric Nutritional Risk Index (GNRI), and postoperative outcomes in elderly patients undergoing ES.

Methods: Using the 2007 to 2016 American College of Surgeons National Surgical Quality Improvement Program database, all patients 65 years or older undergoing ES were included in our study.

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Objective: To understand the progressive nature of amyotrophic lateral sclerosis (ALS) by investigating differential brain patterns of gray and white matter involvement in clinically or genetically defined subgroups of patients using cross-sectional, longitudinal, and multimodal MRI.

Methods: We assessed cortical thickness, subcortical volumes, and white matter connectivity from T1-weighted and diffusion-weighted MRI in 292 patients with ALS (follow-up: n = 150) and 156 controls (follow-up: n = 72). Linear mixed-effects models were used to assess changes in structural brain measurements over time in patients compared to controls.

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Glucagon-like peptide-1 receptor agonists (GLP-1RAs) are recommended for glycaemic management in patients with type 2 diabetes (T2D). Oral semaglutide, the first oral GLP-1RA, has recently been approved for clinical use, based on the results of the randomized, Phase 3a Peptide InnOvatioN for Early diabEtes tReatment (PIONEER) clinical trials. The PIONEER programme tested oral semaglutide in patients with T2D of duration ranging from 3.

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