665 results match your criteria: "Wallenberg Centre for Molecular and Translational Medicine[Affiliation]"

Point of view: Challenges in implementation of new immunotherapies for Alzheimer's disease.

J Prev Alzheimers Dis

January 2025

Division of Neurogeriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, BioClinicum, 171 64 Solna, Sweden; Theme Inflammation and Aging, Karolinska University Hospital, 141 86 Stockholm, Sweden.

The advancement of disease-modifying treatments (DMTs) for Alzheimer's disease (AD), along with the approval of three amyloid-targeting therapies in the US and several other countries, represents a significant development in the treatment landscape, offering new hope for addressing this once untreatable chronic progressive disease. However, significant challenges persist that could impede the successful integration of this class of drugs into clinical practice. These challenges include determining patient eligibility, appropriate use of diagnostic tools and genetic testing in patient care pathways, effective detection and monitoring of side effects, and improving the healthcare system's readiness by engaging both primary care and dementia specialists.

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Influenza remains a persistent global health challenge, largely due to the virus' continuous antigenic drift and occasional shift, which impede the development of a universal vaccine. To address this, the identification of broadly neutralizing antibodies and their epitopes is crucial. Nanobodies, with their unique characteristics and binding capacity, offer a promising avenue to identify such epitopes.

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Introduction: Numerous studies have characterised trajectories of asthma and allergy in children using machine learning, but with different techniques and mixed findings. The present work aimed to summarise the evidence and critically appraise the methodology.

Methods: 10 databases were searched.

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Background: Cerebrospinal fluid (CSF) biomarkers of synaptic dysfunction, neuroinflammation, and glial response, complementing Alzheimer's disease (AD) core biomarkers, have improved the pathophysiological characterization of the disease. Here, we tested the hypothesis that the co-expression of multiple CSF biomarkers will help the identification of AD-like phenotypes when biomarker positivity thresholds are not met yet.

Methods: Two hundred and seventy cognitively unimpaired adults with family history (FH) of sporadic AD (mean age = 60.

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Artificial intelligence in pediatric allergy research.

Eur J Pediatr

December 2024

Krefting Research Centre, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box 424, 405 30, Gothenburg, Sweden.

Unlabelled: Atopic dermatitis, food allergy, allergic rhinitis, and asthma are among the most common diseases in childhood. They are heterogeneous diseases, can co-exist in their development, and manifest complex associations with other disorders and environmental and hereditary factors. Elucidating these intricacies by identifying clinically distinguishable groups and actionable risk factors will allow for better understanding of the diseases, which will enhance clinical management and benefit society and affected individuals and families.

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Integration of personalised ultrasensitive ctDNA monitoring of patients with metastatic breast cancer to reduce imaging requirements.

Int J Cancer

December 2024

Sahlgrenska Center for Cancer Research, Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

Circulating tumour DNA (ctDNA) is an emerging biomarker for monitoring cancers. The personalised disease monitoring in metastatic breast cancer (PDM-MBC) study is an ongoing study instigated to evaluate ctDNA as a biomarker to individualise imaging requirements in patients with MBC. Patients receiving first-line endocrine therapy (aromatase inhibitor + cyclin-dependent kinase 4/6 inhibitor) had plasma samples collected pre-treatment, weeks 2 and 4, and concurrently with imaging until progressive disease (PD).

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Background: Superparamagnetic iron oxide nanoparticles (SPIO) are emerging as a viable alternative to technetium and blue dye. Our study was designed to evaluate the correlation between SPIO dose, injection site, and timing with sentinel lymph node (SLN) detection and iron content in retrieved SLNs.

Methods: This study combined individual patient data from three Dutch and five Swedish studies.

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Rituximab Treatment as Second-Line Therapy in Glucocorticoid Nonresponsive Graves' Orbitopathy: A Nonrandomized, Controlled, Interventional Study.

Endocr Pract

December 2024

Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Department of Endocrine Research, Blå Stråket, Sahlgrenska University Hospital, Göteborg, Sweden; Wallenberg Centre for Molecular and Translational Medicine, Västra Götalands Region, Sweden; Department of Endocrinology, Sahlgrenska University Hospital, Göteborg, Sweden; Gothenburg Centre for Person-Centred Care, University of Gothenburg, Göteborg, Sweden.

Objective: In moderate-to-severe Graves' orbitopathy, rituximab is recommended as second-line therapy in patients nonresponsive to intravenous glucocorticoids. We aimed to evaluate rituximab as early second-line therapy, as data are scarce and contradictory.

Methods: In this nonrandomized, controlled, interventional study, patients with Graves' orbitopathy started on intravenous glucocorticoids.

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Cortical hypometabolism in Parkinson's disease is linked to cholinergic basal forebrain atrophy.

Mol Psychiatry

December 2024

Unidad de Trastornos del Movimiento, Servicio de Neurología y Neurofisiología Clínica, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/Universidad de Sevilla/CSIC/CIBERNED, Sevilla, Spain.

Cortical hypometabolism on FDG-PET is a well-established neuroimaging biomarker of cognitive impairment in Parkinson's disease (PD), but its pathophysiologic origins are incompletely understood. Cholinergic basal forebrain (cBF) degeneration is a prominent pathological feature of PD-related cognitive impairment and may contribute to cortical hypometabolism through cholinergic denervation of cortical projection areas. Here, we investigated in-vivo associations between subregional cBF volumes on 3T-MRI, cortical hypometabolism on [F]FDG-PET, and cognitive deficits in a cohort of 95 PD participants with varying degrees of cognitive impairment.

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Development of an optimized MRI protocol for a rapid preoperative identification of sentinel lymph nodes using superparamagnetic iron oxide - The Gothenburg fast acquisition sentinel lymph node tracking magnetic resonance imaging protocol (GO-FAST-MRI).

Eur J Surg Oncol

January 2025

Department of Surgery, Sahlgrenska University Hospital, Region Västra Götaland, Gothenburg, Sweden; Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden; Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden.

Introduction: Determining sentinel lymph node (SLN) status is important for treatment decisions in patients with melanoma. Superparamagnetic iron oxide nanoparticles (SPIO) combined with MRI have emerged as an alternative to Technetium lymphoscintigraphy for preoperative mapping of SLN, however, the MRI protocols so far are extensive with long in-camera time. This study aimed to evaluate an optimized MRI protocol for rapid identification of SLNs using SPIO as a tracer, without compromising diagnostic quality, the GOthenburg Fast Acquisition Sentinel lymph node Tracking MRI (GO-FAST-MRI).

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Circulating tumor DNA (ctDNA) has shown potential as a non-invasive tumor biomarker in neuroblastoma. Previous studies used generic assays for detection of selected predefined oncogenic variants as markers of ctDNA, which limits the sensitivity and excludes a subset of patients from analysis. Here we assessed patient-specific ctDNA analysis for treatment evaluation and detection of relapse in neuroblastoma.

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Article Synopsis
  • Aggressive pituitary neuroendocrine tumors (PitNETs) often grow despite treatment and can metastasize, making them particularly challenging to manage.
  • This study analyzed tumor samples from 64 patients to investigate genetic markers, finding distinct patterns between aggressive/metastatic tumors and benign ones through genome-wide methylation and chromosomal analyses.
  • The results indicate potential biomarkers that could help in identifying high-risk patients earlier, refining treatment protocols, and improving outcomes for those with aggressive pituitary tumors.
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Mechanistic basis of atypical TERT promoter mutations.

Nat Commun

November 2024

Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

Non-coding mutations in the TERT promoter (TERTp), typically at one of two bases -124 and -146 bp upstream of the start codon, are among the most prevalent driver mutations in human cancer. Several additional recurrent TERTp mutations have been reported but their functions and origins remain largely unexplained. Here, we show that atypical TERTp mutations arise secondary to canonical TERTp mutations in a two-step process.

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Gene-edited human pluripotent stem cells provide attractive model systems to functionally interrogate the role of specific genetic variants in relevant cell types. However, the need to isolate and screen edited clones often remains a bottleneck, in particular when recombination rates are sub-optimal. Here, we present a protocol for flexible gene editing combining Cas9 ribonucleoprotein with donor templates delivered by adeno-associated virus (AAV) vectors to yield high rates of homologous recombination.

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Diagnosis of Alzheimer's disease using plasma biomarkers adjusted to clinical probability.

Nat Aging

November 2024

Translational Neuroimaging Laboratory, McGill Research Centre for Studies in Aging, Alzheimer's Disease Research Unit, Douglas Research Institute, Centre intégré universitaire de santé et de services sociaux de l'Ouest-de-l'Île-de-Montréal, McGill University, Montreal, Quebec, Canada.

Article Synopsis
  • Recent advancements in Alzheimer's treatment now require verification of amyloid-β pathology using PET scans or cerebrospinal fluid, but blood tests could simplify this process.* -
  • A study involving nearly 7,000 individuals identified that the plasma biomarker p-tau217 can reliably indicate amyloid-β pathology, especially in patients with probable Alzheimer’s dementia.* -
  • The findings suggest that combining p-tau217 results with clinical assessments may allow for accurate diagnoses without the need for more invasive PET or CSF tests.*
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Background: ST-elevation myocardial infarction (STEMI) and Takotsubo syndrome (TS) are two distinct cardiac conditions that both result in sudden loss of cardiac dysfunction and that are difficult to distinguish clinically. This study compared plasma protein changes in 24 women with STEMI and 12 women with TS in the acute phase (days 0-3 post symptom onset) and the stabilization phase (days 7, 14, and 30) to examine the molecular differences between these conditions.

Methods: Plasma proteins from STEMI and TS patients were extracted during the acute and stabilization phases and analyzed via quantitative proteomics.

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Article Synopsis
  • There is a high prevalence of ADHD among prison populations, which is linked to increased criminal behavior; the study reviews how ADHD medications impact recidivism and symptoms in inmates.
  • The review followed strict research guidelines and focused on peer-reviewed studies that examined incarcerated individuals with diagnosed ADHD who began pharmacological treatment.
  • Only one of the included studies found a lower than expected rate of recidivism among those receiving treatment, while results varied widely for ADHD symptoms and rehabilitation factors, highlighting a lack of strong evidence for medication effectiveness.
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Identification of late-stage tau accumulation using plasma phospho-tau217.

EBioMedicine

November 2024

Translational Neuroimaging Laboratory, McGill Research Centre for Studies in Aging, Montreal, Quebec, QC H4H 1R3, Canada; Department of Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, Quebec, QC H3A 1A1, Canada. Electronic address:

Article Synopsis
  • This study focuses on identifying individuals with advanced Alzheimer's disease (specifically Braak V or VI) using plasma biomarkers in those who are already confirmed to have amyloid-β (Aβ).
  • Researchers evaluated 595 participants from two studies, employing tests like amyloid-PET and tau-PET while measuring various plasma tau levels.
  • Findings suggest that elevated levels of plasma pTau-217 are strongly associated with Braak V positivity, indicating it could be a useful biomarker for patient stratification in treatment and clinical studies.
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2024 AA criteria for Alzheimer's disease diagnosis: Mainly anchored at Aβ not tau.

Alzheimers Dement

December 2024

Institute of Memory and Alzheimer's Disease, Department of Neurology, AP-HP Sorbonne Université, Hôpital Pitié-Salpêtrière, Paris, France.

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Unveiling metabolo-genomic insights of potent antitumoral and antibiotic activity in sp. VB1 from Valparaíso Bay.

Front Microbiol

October 2024

Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Centro de Biotecnología DAL, Universidad Técnica Federico Santa María, Valparaíso, Chile.

sp. VB1, an actinomycete isolated from marine sediments in Valparaíso Bay, Chile, synthesizes antimicrobial and antiproliferative compounds. This study presents comprehensive metabolomics and comparative genomics analyses of strain VB1.

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Effects of iodine contrast media on thyroid function - a prospective study.

Eur Thyroid J

December 2024

Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

Article Synopsis
  • Exposure to iodine contrast medium (ICM) may lead to thyroid dysfunction due to excess iodide, but past studies have yielded mixed results due to their observational nature.
  • A study involving 422 individuals aged 50-65 assessed thyroid hormone levels before and after contrast-enhanced CT angiography, finding a small significant effect on hormone levels but no cases of severe thyroid problems.
  • The study concluded that in iodine-sufficient countries, ICM-related thyroid dysfunction is uncommon, typically mild, self-limiting, and often asymptomatic in the studied age group.
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Subtle cognitive changes in preclinical Alzheimer's disease (AD) are difficult to detect using traditional pen-and-paper neuropsychological assessments. Remote and unsupervised digital assessments can improve scalability, measurement reliability, and ecological validity, enabling the detection and monitoring of subtle cognitive change. Here, we evaluate such tools deployed in preclinical AD samples, defined as cognitively unimpaired individuals with abnormal levels of amyloid-β (Aβ), or Aβ and tau.

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