Publications by authors named "Lars Sorensen"

Article Synopsis
  • Ulcerative colitis (UC) is a disease that causes inflammation, making it hard to monitor without invasive procedures like endoscopy; this study explores serum extracellular matrix (ECM) fragments as possible noninvasive indicators of disease severity and treatment effectiveness.
  • The research involved 49 UC patients and 50 healthy controls, measuring various ECM biomarkers at three different time points, revealing that certain markers like PRO-C11 and PRO-C3 can effectively predict responses to treatment and differentiate between disease severity levels.
  • The findings suggest that serum ECM fragments correlate with endoscopic disease severity and may serve as future therapeutic targets to help prevent intestinal damage in UC patients.
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Background: People with hemophilia often experience pain and suffer from comorbidities related to their bleeding disorder. Consequently, unemployment due to disability is prevalent among people with hemophilia.

Objectives: To explore associations between unemployment due to disability and treatment while adjusting for known risk factors for unemployment.

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Background And Aims: Despite advances in the medical treatment of Crohn's disease [CD], many patients will still need bowel resections and face the subsequent risk of recurrence and re-resection. We describe contemporary re-resection rates and identify disease-modifying factors and risk factors for re-resection.

Methods: We conducted a retrospective, population-based, individual patient-level data cohort study covering 47.

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Context: Women with gestational diabetes mellitus (GDM) have an increased risk of long-term complications, including impaired glucose metabolism, type 2 diabetes (T2DM), cardiovascular disease, and obesity. In current clinical practice, a 1 size fits all approach to GDM is applied, although heterogeneity among women with GDM has been recognized.

Objective: To give the most adequate preventive care and postpartum (PP) guidance, we aimed to make a metabolic characterization and identify subgroups of women with previous GDM within the first year PP.

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Objective: Hypertensive response to exercise (HRE) is observed in patients with hypertrophic cardiomyopathy (HCM) with normal resting blood pressure (BP). However, the prevalence or prognostic implications of HRE in HCM remain unclear.

Methods: In this study, normotensive HCM subjects were enrolled.

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Background: Endoscopic retrograde cholangiography (ERC) with stone extraction and papillotomy with subsequent laparoscopic cholecystectomy-the two-step approach-is the standard treatment of common bile duct stones in many countries. However, ERC is associated with a high risk of complications and more than half of patients require multiple ERCs. Meta-analyses of randomised clinical trials find no major differences of the two-step approach in comparison with laparoscopic cholecystectomy with intraoperative laparoscopic stone clearance-the one-step approach.

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Phosphatidylinositol 4,5-bisphosphate (PI(4,5)P) lipids have been shown to stabilize an active conformation of class A G-protein coupled receptors (GPCRs) through a conserved binding site, not present in class B GPCRs. For class B GPCRs, previous molecular dynamics (MD) simulation studies have shown PI(4,5)P interacting with the Glucagon receptor (GCGR), which constitutes an important target for diabetes and obesity therapeutics. In this work, we applied MD simulations supported by native mass spectrometry (nMS) to study lipid interactions with GCGR.

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Background And Objective: Exposures of gallstones and treatments thereof in relation to development of cancer have not been explored before in long-term follow-up studies. Our objective was to determine whether symptomatic gallstones, cholecystectomy, or sphincterotomy were associated with development of upper gastrointestinal cancers.

Methods: This is a nationwide cohort study of persons born in Denmark 1930-1984 included from age 30 years with long-term follow-up (1977-2014).

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Background And Objective: Gallstones are highly prevalent, and more than 9000 cholecystectomies are performed annually in Denmark. The aim of this guideline was to improve the clinical course of patients with gallstone disease including a subgroup of high-risk patients. Outcomes included reduction of complications, readmissions, and need for additional interventions in patients with uncomplicated gallstone disease, acute cholecystitis, and common bile duct stones (CBDS).

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The use of mass spectrometry to investigate proteins is now well established and provides invaluable information for both soluble and membrane protein assemblies. Maintaining transient noncovalent interactions under physiological conditions, however, remains challenging. Here, using nanoscale electrospray ionization emitters, we establish conditions that enable mass spectrometry of two G protein-coupled receptors (GPCR) from buffers containing high concentrations of sodium ions.

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Ageing people with hemophilia (PWH) have a higher prevalence of hypertension than the general population. This study aimed to determine whether macroscopic hematuria was associated with hypertension in PWH in a post hoc analysis using data from a cross-sectional study conducted by the ADVANCE Working Group (the H3 study), which included PWH ≥ 40 years of age. Data from 16 contributing centers, located in 13 European countries and Israel, were analyzed using logistic regression models.

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Two-stage treatment of common bile duct stones by Endoscopic Retrograde Cholangio-Pancreatography and subsequent laparoscopic cholecystectomy is well established. In many cases multiple procedures are needed before clearance of the common bile duct is obtained. This study aimed to describe the clinical course from common bile duct stone diagnosis to successful clearance.

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Introduction: A venous thromboembolism (VTE), i.e. deep vein thrombosis (DVT) or pulmonary embolism (PE), is a potentially lethal complication to surgical procedures.

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Background: Percutaneous cholecystostomy is frequently used as a treatment option for acute calculous cholecystitis in patients unfit for surgery. There is sparse evidence on the long-term impact of cholecystostomy on gallstone-related morbidity and mortality in patients with acute calculous cholecystitis. This study describes the long-term outcome of acute calculous cholecystitis following percutaneous cholecystostomy compared to conservative treatment.

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Hydrogen deuterium exchange measured by mass spectrometry (HDX-MS) is a commonly used technique for studying the structural dynamics of proteins in solution. The first part of any bottom-up HDX-MS experiment is to identify the peptides generated from a digestion step. This requires manual inspection of the identified peptides to determine their use for HDX-MS analysis, which is a time-consuming task.

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Background: Impaired cardiac function is the main predictor of poor outcome in infective endocarditis (IE). Global longitudinal strain (GLS) derived from two-dimensional strain echocardiography has proven superior in prediction of long-term outcome as compared to left ventricular ejection fraction (LVEF) in valvular disease and heart failure in general. Whether measurements of cardiac deformation can predict survival in patients with IE has not previously been investigated.

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Article Synopsis
  • Hypertrophic cardiomyopathy (HCM) results from mutations in heart muscle proteins, leading to different cellular responses and disease characteristics.
  • A study compared two mouse models with different HCM-related mutations, revealing significant variations in their cellular functions and molecular profiles.
  • The findings suggest that the R92W-TnT mutation may respond better to certain treatments, highlighting the potential for personalized therapy approaches in managing HCM.
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Background: Hypertrophic cardiomyopathy (HCM) is a common inherited cardiac disease characterized by varying degrees of left ventricular outflow tract obstruction. In a large cohort, we compare the outcomes among 3 different hemodynamic groups.

Methods And Results: We prospectively enrolled patients fulfilling standard diagnostic criteria for HCM from January 2005 to June 2015.

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Background: Exercise intolerance is the most common symptom in hypertrophic cardiomyopathy (HCM). We examined whether inability to augment myocardial mechanics during exercise would influence functional performance and clinical outcomes in HCM.

Methods: Ninety-five HCM patients (32 nonobstructive, 32 labile-obstructive, 31 obstructive) and 26 controls of similar age and gender distribution were recruited prospectively.

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Background: Gallstone disease is highly prevalent and is associated with systemic inflammation.

Aims: To determine whether screen-detected gallstones or cholecystectomy are associated with the occurrence of autoimmune and autoinflammatory diseases and the most common subgroups thereof.

Methods: A cohort study of three randomly selected general population samples from Copenhagen was performed.

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Left ventricular hypertrophy (LVH) is an adaptive response to physiological or pathological stimuli, and distinguishing between the two has obvious clinical implications. However, asymmetric septal hypertrophy and preserved cardiac function are noted in early stages in both cases. We characterized the early anatomic and functional changes in a mouse model of physiological and pathological stress using serial echocardiography-based morphometry and tissue velocity imaging.

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Organophosphate esters (OPEs) are used as flame retardants, plasticizers, and as hydraulic fluids. They are present in indoor environments in high concentrations compared with other flame retardants, and human exposure is ubiquitous. In this study we provide data for estimating dermal uptake for eight OPEs and ranking in OPEs risk assessment.

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Background And Aim: A risk-stratified approach for selecting patients likely to harbor common bile duct (CBD) stones to proceed directly to endoscopic or surgical stone clearance, rather than undergo less invasive testing, has been proposed. We assessed the performance of three clinical algorithms used to predict CBD stones.

Methods: All patients undergoing first-time endoscopic retrograde cholangiopancreatography (ERCP) in 2011-2012 as a result of suspected CBD stones were enrolled prospectively in a clinical database.

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Objectives: The objectives for this study were to examine the associations between metabolic biomarkers of obesity including insulin resistance, vascular dysfunction, systemic inflammation, genetic susceptibility and ultrasound proven gallstone disease or cholecystectomy in a population-based cross-sectional study.

Material And Methods: A total of 2650 participants were included, of whom 422 had gallstone disease. Associations between selected metabolic biomarkers and gallstone disease were estimated by multivariable logistic regression models and expressed as odds ratio (OR) and 95% confidence interval (CI).

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