43 results match your criteria: "Stockholm (O.W.); and Louisiana Research Center[Affiliation]"

Cerebrovascular and Alzheimer's disease biomarkers in dementia with Lewy bodies and other dementias.

Brain Commun

August 2024

Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, 171 77 Stockholm, Sweden.

Article Synopsis
  • The study examines the prevalence of cerebrovascular and Alzheimer's disease co-pathologies in patients with dementia with Lewy bodies against various other cognitive states, including mild cognitive impairment and Alzheimer's disease.
  • A multi-cohort dataset of 4,549 participants was analyzed, revealing that 43% of dementia with Lewy bodies patients had a high load of white matter hyperintensities, indicating a significant difference compared to other groups.
  • Findings showed that white matter hyperintensities in dementia with Lewy bodies correlate with medial temporal atrophy, suggesting that the impact of these co-pathologies is particularly pronounced in this group compared to others.
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Novel Endogenous Engineering Platform for Robust Loading and Delivery of Functional mRNA by Extracellular Vesicles.

Adv Sci (Weinh)

November 2024

Division of Biomolecular and Cellular Medicine, Department of Laboratory Medicine, Karolinska Institutet, ANA Futura, Alfred-Nobels-Allé 8, Huddinge, Stockholm, 14152, Sweden.

Article Synopsis
  • mRNA is a promising therapeutic tool that needs effective delivery systems to ensure stability, safety, and reduced immune reactions.
  • A new bioengineering method uses bionormal nanoparticles and extracellular vesicles (EVs) to load and deliver mRNA by incorporating a specific RNA-binding domain and an endosomal escape moiety.
  • This method shows promising results in delivering cancer immunotherapy in a melanoma mouse model, improving upon existing EV-based delivery systems and advancing their potential clinical use.
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Background: Previous studies comparing percutaneous coronary intervention (PCI) with coronary artery bypass grafting (CABG) in patients with multivessel coronary disease not involving the left main have shown significantly lower rates of death, myocardial infarction (MI), or stroke after CABG. These studies did not routinely use current-generation drug-eluting stents or fractional flow reserve (FFR) to guide PCI.

Methods: FAME 3 (Fractional Flow Reserve versus Angiography for Multivessel Evaluation) is an investigator-initiated, multicenter, international, randomized trial involving patients with 3-vessel coronary artery disease (not involving the left main coronary artery) in 48 centers worldwide.

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Protective immunity induced by an inhaled SARS-CoV-2 subunit vaccine.

Vaccine

July 2023

National Veterinary Institute, Uppsala, Sweden; Clinical Microbiology, LABMED, Karolinska Institute, Sweden. Electronic address:

Targeting the site of infection is a promising strategy for improving vaccine effectivity. To date, licensed COVID-19 vaccines have been administered intramuscularly despite the fact that SARS-CoV-2 is a respiratory virus. Here, we aim to induce local protective mucosal immune responses with an inhaled subunit vaccine candidate, ISR52, based on the SARS-CoV-2 Spike S1 protein.

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Background: An increasing proportion of patients with cancer experience acute myocardial infarction (AMI). We investigated differences in quality of AMI care and survival between patients with and without previous cancer diagnoses.

Methods: A retrospective cohort study using Virtual Cardio-Oncology Research Initiative data.

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Unlabelled: Although prolonged-release tacrolimus (PR-T) is widely approved for posttransplantation immunosuppression in kidney recipients, large-scale studies are required to assess long-term outcomes. We present follow-up data from the Advagraf-based Immunosuppression Regimen Examining New Onset Diabetes Mellitus in Kidney Transplant Recipients (ADVANCE) trial, in which kidney transplant patients (KTPs) received corticosteroid minimization with PR-T.

Methods: ADVANCE was a 24-wk, randomized, open-label, phase-4 study.

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Changes in preterm birth and stillbirth during COVID-19 lockdowns in 26 countries.

Nat Hum Behav

April 2023

Children's Hospital Research Institute of Manitoba, Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba, Canada.

Article Synopsis
  • Preterm birth (PTB) is a major cause of infant mortality globally, and studies show mixed results regarding its rates during COVID-19 lockdowns, with changes ranging from -90% to +30%.
  • Analysis of data from 52 million births in 26 countries indicates modest reductions in PTB rates during the first three months of lockdown, but no significant changes in the fourth month.
  • High-income countries showed an increase in stillbirth risk during the first month of lockdown, with Brazil experiencing increased stillbirth rates throughout the entire lockdown period, highlighting the need for further investigation into these trends.
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Article Synopsis
  • The INFORM program studies cancer in kids by looking at their tumors to find the best treatments.
  • In a two-year test, they used a special method to check how 75 different drugs work on tumor samples from 132 young patients across seven countries.
  • They found that 80% of the time they could suggest helpful drugs, especially when there weren't clear markers in the tumors.
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β-Amyloid, Tau, Neurodegeneration Classification and Eligibility for Anti-amyloid Treatment in a Memory Clinic Population.

Neurology

November 2022

From the Division of Clinical Geriatrics (A.R., U.Ö.-W., C.T., A.S.-M., A.S., M.K.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden; Department of Neurology (A.R., A.H., A.S, M.K.), Institute of Clinical Medicine, University of Eastern Finland, Kuopio; Medical Unit Aging (U.Ö.-W., A.B., G.H., M.R., F.W., M.K.), Karolinska University Hospital, Stockholm, Sweden; Division of Neurogeriatrics (A.S.M.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden; Ageing Epidemiology Research Unit, School of Public Health, Imperial College London, United Kingdom.

Background And Objectives: ATN (β-amyloid [Aβ], tau, neurodegeneration) system categorizes individuals based on their core Alzheimer disease (AD) biomarkers. An important potential future use for ATN is therapeutic decision-making in clinical practice once disease-modifying treatments (e.g.

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8-oxo Guanine DNA Glycosylase 1 is the initiating enzyme within base excision repair and removes oxidized guanines from damaged DNA. Since unrepaired 8-oxoG could lead to G : C→T : A transversion, base removal is of utmost importance for cells to ensure genomic integrity. For cells with elevated levels of reactive oxygen species this dependency is further increased.

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Background: Differences in adverse cardiac remodeling between patients who have bicuspid (BAV) and tricuspid aortic valve (TAV) with severe isolated aortic stenosis (AS) and its prognostic impact after surgical aortic valve replacement remains unclear. We sought to investigate differences in preoperative diastolic and systolic function in patients with BAV and TAV who have severe isolated AS and the incidence of postoperative heart failure hospitalization and mortality.

Methods: Two hundred seventy-one patients with BAV (n=152) or TAV (n=119) and severe isolated AS without coronary artery disease or other valvular heart disease, scheduled for surgical aortic valve replacement, were prospectively included.

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Association of Cerebrovascular and Alzheimer Disease Biomarkers With Cholinergic White Matter Degeneration in Cognitively Unimpaired Individuals.

Neurology

October 2022

From the Division of Clinical Geriatrics (N.C., D.F., A.M., J.B.P., S.S., L.-O.W., M.E., E.W.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences, and Society, and the Division of Insurance Medicine (A.M.), Department of Clinical Neuroscience, Karolinska Institutet, Stockholm; Department of Psychology (N.C.), Sensory Cognitive Interaction Laboratory (SCI-lab), Stockholm University, Sweden; Department of Radiology (D.F.), Mayo Clinic, Rochester, MN; Department of Cybernetics (M.N.), Faculty of Electrical Engineering and Czech Institute of Informatics (M.N., O.S., L.V.), Robotics, and Cybernetics, Czech Technical University, Prague, Czech Republic; Clinical Memory Research Unit (J.B.P.), Department of Clinical Sciences, Lund University, Malmö; Department of Psychiatry Cognition and Old Age Psychiatry, (A.Z., S.K., I.S.), Clinical Neurochemistry Laboratory (K.B., H.Z.), and Department of Clinical Physiology (M.S.), Sahlgrenska University Hospital, Gothenburg; Neuropsychiatric Epidemiology Unit (A.Z., K.B., H.Z., S.K., I.S.), Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy, Centre for Ageing and Health (AGECAP) at the University of Gothenburg; Theme Inflammation and Aging (M.E.), Karolinska University Hospital, Huddinge, Sweden; Clinical Dementia Research Section (S.T.), Department of Psychosomatic Medicine, University Medicine Rostock; German Center for Neurodegenerative Diseases (DZNE) (S.T., M.J.G.), Rostock, Germany; Unidad de Trastornos del Movimiento (M.J.G.), Servicio de Neurología y Neurofisiología Clínica, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Spain; Department of Neurodegenerative Disease (H.Z.), UCL Institute of Neurology, London; Dementia Research Institute at UCL (H.Z.), London, UK; Hong Kong Center for Neurodegenerative Diseases (H.Z.), China; Wallenberg Centre for Molecular and Translational Medicine (M.S.) and Department of Psychiatry and Neurochemistry (M.S.), Institute of Physiology and Neuroscience, University of Gothenburg, Sweden; Dementia Research Centre (M.S.), Institute of Neurology, University College London; and Department of Neuroimaging (E.W.), Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.

Background And Objectives: Several pathologic processes might contribute to the degeneration of the cholinergic system in aging. We aimed to determine the contribution of amyloid, tau, and cerebrovascular biomarkers toward the degeneration of cholinergic white matter (WM) projections in cognitively unimpaired individuals.

Methods: The contribution of amyloid and tau pathology was assessed through CSF levels of the Aβ ratio and phosphorylated tau (p-tau).

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Background: Our current understanding of right heart failure (RHF) post-left ventricular assist device (LVAD) is lacking. Recently, a new Interagency Registry for Mechanically Assisted Circulatory Support definition of RHF was introduced. Based on this definition, we investigated natural history, risk factors, and outcomes of post-LVAD RHF.

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Water-in-oil-in-water (W/O/W) emulsions (double emulsions) have often been used for the encapsulation of bioactive compounds such as anthocyanins. Instability of both anthocyanins and double emulsions creates a need for a tailored composition of the aqueous phase. In this work, double emulsions with a gelled internal water phase were produced and monitored over a 20-day storage period.

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The emergence and ongoing convergent evolution of the SARS-CoV-2 N501Y lineages.

Cell

September 2021

Institute for Genomics and Evolutionary Medicine, Department of Biology, Temple University, Philadelphia, PA 19122, USA. Electronic address:

The independent emergence late in 2020 of the B.1.1.

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Atrial Fibrillation, Stroke, and Silent Cerebrovascular Disease: A Population-based MRI Study.

Neurology

October 2021

From the Institute of Neuroscience and Physiology (L.R., S.Sacuiu, H.W., J.N., X.G., S.K., A.Z., I.S.), Sahlgrenska Academy, Centre for Ageing and Health at the University of Gothenburg; Department of Psychiatry Cognition and Old Age Psychiatry (L.R., S.S., J.N., S.K., I.S.), Sahlgrenska University Hospital, Region Västra Götaland, Mölndal; Department of Mood Disorders (X.G.), Sahlgrenska University Hospital, Region Västra Götaland, Göteborg; Division of Clinical Geriatrics (S.Shams, J.B.P., L.-O.W., E.W.), Centre for Alzheimer Research, Department of Neurobiology, Care Sciences, and Society, Karolinska Institutet, Stockholm, Sweden; Department of Radiology (S.S.), Stanford, CA; and Clinical Memory Research Unit (J.B.P.), Department of Clinical Sciences, Malmö, Lund University, Sweden.

Background And Objectives: Atrial fibrillation (AF) has been associated with cognitive decline and dementia. However, the mechanisms behind these associations are not clear. Examination of cerebrovascular pathology on MRI may shed light on how AF affects the brain.

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The rapamycin analogue everolimus (EVR) is a potent inhibitor of the mammalian target of rapamycin (mTOR) and clinically used to prevent allograft rejections as well as tumor growth. The pharmacokinetic and immunosuppressive efficacy of EVR have been extensively reported in patient populations and in vitro studies. However, dose-dependent ex vivo effects upon acute EVR administration in healthy volunteers are rare.

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Oxygen protection/isolation is imperative to prevent the lipid oxidation since oxygen molecule is an ultimate quencher in photon conversion process. Inspired by the structural buildup of seeds from oil crops, a sustainable solid particle stabilizer with novel antioxidant activity was prepared by using cellulose and polyphenol. In this work, bacterial cellulose (BC) nanofibrils modified by tea polyphenols (TPs) was prepared and used as Pickering emulsifier for the O/W emulsion.

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The World Health Organization (WHO) recommends that countries implement pharmacovigilance and collect information on active drug safety monitoring (aDSM) and management of adverse events.The aim of this prospective study was to evaluate the frequency and severity of adverse events to anti-tuberculosis (TB) drugs in a cohort of consecutive TB patients treated with new ( bedaquiline, delamanid) and repurposed ( clofazimine, linezolid) drugs, based on the WHO aDSM project. Adverse events were collected prospectively after attribution to a specific drug together with demographic, bacteriological, radiological and clinical information at diagnosis and during therapy.

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Due to a polar or even charged binding interface, DNA-binding proteins are considered extraordinarily difficult targets for development of small-molecule ligands and only a handful of proteins have been targeted successfully to date. Recently, however, it has been shown that development of selective and efficient inhibitors of 8-oxoguanine DNA glycosylase is possible. Here, we describe the initial druggability assessment of DNA glycosylases in a computational setting and experimentally investigate several methods to target endonuclease VIII-like 1 (NEIL1) with small-molecule inhibitors.

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and cortical superficial siderosis in CAA: Meta-analysis and potential mechanisms.

Neurology

July 2019

From the Hemorrhagic Stroke Research Program, Department of Neurology (A.C., M.P., A.B., M.E.G., J.N.G., J.R., S.M.G., A.V.), Massachusetts General Hospital Stroke Research Center, Harvard Medical School, Boston; Alzheimer Center and the Neuroscience Campus Amsterdam and Departments of Radiology and Nuclear Medicine (H.I.Z., F.B.), VU University Medical Center, the Netherlands; Karolinska Institutet (S.S., L.-O.W.), Karolinska University Hospital, Stockholm, Sweden; Department of Radiology (K.K., J.R.C.), Mayo Clinic, Rochester, MN; Department of Medicine (Neurology) (A.S.), McMaster University and Population Health Research Institute, Hamilton, Canada; Memory, Aging and Cognition Center (S.H., Y.L.C., J.R.C., C.C.), National University Health System, Singapore; Department of Pharmacology (S.H., Y.L.C., J.R.C., C.C.), National University of Singapore; Department of Nuclear Medicine and Centre for PET (P.A.Y.), The University of Melbourne, Parkville, Australia; Department of Neuroradiology (G.B.), Université Paris-Descartes, INSERM U894, CH Sainte-Anne, Paris, France; Department of Neurology and Neuroscience Center (H.K.N., D.L.N., S.W.S.), Samsung Medical Center, Seoul, Republic of Korea; UCL Institutes of Neurology and Healthcare Engineering (F.B.), London, UK; and Center for Genomic Medicine (J.R.) and Division of Neurocritical Care and Emergency Neurology (J.R.), Massachusetts General Hospital, Harvard Medical School, Boston.

Objective: To assess potential mechanisms of cortical superficial siderosis (cSS), a central MRI biomarker in cerebral amyloid angiopathy (CAA), we performed a collaborative meta-analysis of associations with cSS presence and severity.

Methods: We pooled data from published studies reporting genotype and MRI assessment of cSS in 3 distinct settings: (1) stroke clinic patients with symptomatic CAA (i.e.

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Surveillance of adverse events in the treatment of drug-resistant tuberculosis: A global feasibility study.

Int J Infect Dis

June 2019

Global Tuberculosis Programme, World Health Organization, Geneva, Switzerland. Electronic address:

The World Health Organization launched a global initiative, known as aDSM (active TB drug safety monitoring and management) to better describe the safety profile of new treatment regimens for drug-resistant tuberculosis (TB) in real-world settings. However, comprehensive surveillance is difficult to implement in several countries. The aim of the aDSM project is to demonstrate the feasibility of implementing national aDSM registers and to describe the type and the frequency of adverse events (AEs) associated with exposure to the new anti-TB drugs.

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Objective: To compare the reoperation rate for recurrence of different lightweight to heavyweight meshes after an open anterior mesh (OAM) inguinal hernia repair.

Summary Background Data: Lightweight meshes have shown benefits compared with heavyweight meshes in terms of accelerated recovery after surgery with less postoperative pain. The use of such meshes may, however, be associated with an increase in hernia recurrence.

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Brain myoinositol as a potential marker of amyloid-related pathology: A longitudinal study.

Neurology

January 2019

From the Division of Clinical Geriatrics (O.V., K.P., L.-O.W., E.W.), Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Stockholm; Department of Diagnostic Radiology (P.S., D.v.W.), Lund University; Imaging and Function (D.v.W.), Skåne University Health Care, Lund; Clinical Memory Research Unit (S.P., E.S., O.H.), Department of Clinical Sciences, Malmö, Lund University; Memory Clinic (E.S., O.H.), Skåne University Hospital, Malmö, Sweden; and Department of Neuroimaging (E.W.), Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.

Objective: To investigate the association between longitudinal changes in proton magnetic resonance spectroscopy (MRS) metabolites and amyloid pathology in individuals without dementia, and to explore the relationship between MRS and cognitive decline.

Methods: In this longitudinal multiple time point study (a subset of the Swedish BioFINDER), we included cognitively healthy participants, individuals with subjective cognitive decline, and individuals with mild cognitive impairment. MRS was acquired serially in 294 participants (670 individual spectra) from the posterior cingulate/precuneus.

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Karonudib (TH1579) is a novel compound that exerts anti-tumor activities and has recently entered phase I clinical testing. The aim of this study was to conduct a pre-clinical trial in patient-derived xenografts to identify the possible biomarkers of response or resistance that could guide inclusion of patients suffering from metastatic melanoma in phase II clinical trials. Patient-derived xenografts from 31 melanoma patients with metastatic disease were treated with karonudib or a vehicle for 18 days.

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