535 results match your criteria: "Institute of Mathematics and Statistics[Affiliation]"
Gut Microbes
December 2025
Estonian Genome Center, Institute of Genomics, University of Tartu, Tartu, Estonia.
Assessing causality is undoubtedly one of the key questions in microbiome studies for the upcoming years. Since randomized trials in human subjects are often unethical or difficult to pursue, analytical methods to derive causal effects from observational data deserve attention. As simple covariate adjustment is not likely to account for all potential confounders, the idea of instrumental variable (IV) analysis is worth exploiting.
View Article and Find Full Text PDFNPJ Syst Biol Appl
January 2025
BIH Center for Regenerative Therapies (BCRT), Julius Wolff Institute (JWI), and Berlin Institute of Health (BIH); all Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), 10117, Berlin, Germany.
Coronavirus disease 2019 (COVID-19) presents a wide spectrum of symptoms, the causes of which remain poorly understood. This study explored the associations between autoantibodies (AABs), particularly those targeting G protein-coupled receptors (GPCRs) and renin‒angiotensin system (RAS) molecules, and the clinical manifestations of COVID-19. Using a cross-sectional analysis of 244 individuals, we applied multivariate analysis of variance, principal component analysis, and multinomial regression to examine the relationships between AAB levels and key symptoms.
View Article and Find Full Text PDFPsychother Psychosom
January 2025
Bipolar Disorder Research Program (PROMAN), Institute of Psychiatry, University of São Paulo Medical School, São Paulo, Brazil.
Introduction: Impairments in social cognition in bipolar disorder (BD) have been extensively described in the last decade but few treatment strategies have been studied to address this issue. This study presents findings from a randomized controlled trial (RCT) investigating the efficacy of metacognitive training for bipolar disorder (MCT-BD) compared to Treatment as Usual (TAU) among individuals with BD in remission. The aim was to determine whether MCT-BD could improve social cognition and overall functioning in this population.
View Article and Find Full Text PDFHealthcare (Basel)
January 2025
Department of Computer Science, Institute of Mathematics and Statistics, University of São Paulo (USP), São Paulo 05508-220, SP, Brazil.
Background/objectives: The aim of this paper was to compare voice and speech characteristics between post-COVID-19 and control subjects. The hypothesis was that acoustic parameters of voice and speech may differentiate subjects infected by COVID-19 from control subjects. Additionally, we expected to observe the persistence of symptoms in women.
View Article and Find Full Text PDFJ Biomed Inform
January 2025
Institute of Computer Science, University of Tartu, 51009 Tartu, Estonia; STACC, 51009 Tartu, Estonia.
Objective: This study aims to address the gap in the literature on converting real-world Clinical Document Architecture (CDA) data into the Observational Medical Outcomes Partnership (OMOP) Common Data Model (CDM), focusing on the initial steps preceding the mapping phase. We highlight the importance of a repeatable Extract-Transform-Load (ETL) pipeline for health data extraction from HL7 CDA documents in Estonia for research purposes.
Methods: We developed a repeatable ETL pipeline to facilitate the extraction, cleaning, and restructuring of health data from CDA documents to OMOP CDM, ensuring a high-quality and structured data format.
Diagnostics (Basel)
November 2024
Department of Clinical Sciences, Malmö, Lund University, 214 28 Malmö, Sweden.
Background: There are no clinical or laboratory markers that can diagnose acute mesenteric ischemia (AMI) accurately. This study aimed to find differences in clinical and laboratory markers between arterial occlusive AMI and other acute abdominal diseases where AMI was initially suspected.
Methods: This was a post hoc study of an international prospective multicenter study where data on patients with suspected AMI were collected.
Eur J Pediatr
December 2024
School of Medicine, Universidade Federal Fluminense, Rua Marquês de Paraná, 303. Centro, Niterói 24.033-900, Rio de Janeiro, Brazil.
This study aimed to evaluate the association between microcephaly and hearing disorders in children with exposed or suspected exposure to Zika virus (ZIKV) during the intrauterine period. In this cross-sectional study, we enrolled children exposed or suspected of being exposed to ZIKV during intrauterine period, admitted to the hospital between April 2016 and July 2018, and followed up until September 2021. All children underwent at least one automated auditory brainstem response (AABR) test.
View Article and Find Full Text PDFPLoS Genet
December 2024
Institute of Translational Genomics, Helmholtz Zentrum München- German Research Center for Environmental Health, Neuherberg, Germany.
Circulating metabolite levels have been associated with type 2 diabetes (T2D), but the extent to which T2D affects metabolite levels and their genetic regulation remains to be elucidated. In this study, we investigate the interplay between genetics, metabolomics, and T2D risk in the UK Biobank dataset using the Nightingale panel composed of 249 metabolites, 92% of which correspond to lipids (HDL, IDL, LDL, VLDL) and lipoproteins. By integrating these data with large-scale T2D GWAS from the DIAMANTE meta-analysis through Mendelian randomization analyses, we find 79 metabolites with a causal association to T2D, all spanning lipid-related classes except for Glucose and Tyrosine.
View Article and Find Full Text PDFBiomark Insights
November 2024
Institute of Clinical Medicine, University of Tartu, Estonia.
Background: Acute mesenteric venous thrombosis (MVT) is rarely suspected as primary diagnosis in emergency departments and still carries an in-hospital mortality rate of above 20%.
Objectives: The aim of this study was to find differences in clinical and laboratory markers between patients with acute MVT and a control group of suspected but confirmed as not having any type of acute mesenteric ischaemia (AMI).
Design: Data was retrieved from the AMESI (Acute MESenteric Ischaemia) study.
Healthcare (Basel)
November 2024
Department of Nursing, Botucatu Medical School, São Paulo State University (UNESP), Botucatu 18618-687, SP, Brazil.
Occupational stress and workplace violence are highly prevalent risk factors among healthcare professionals and can affect not only the psychosocial well-being of workers but also that of patients and healthcare organizations. The objective of this study is to translate and cross-culturally adapt the ENvironmental PRotectors against hOspital work Stress scale to facilitate future psychometric validation of the instrument. A methodological study was conducted at the School of Medicine of São Paulo State University (UNESP) in São Paulo, Brazil.
View Article and Find Full Text PDFHealthcare (Basel)
November 2024
School of Arts, Sciences and Humanities, University of São Paulo, São Paulo 03828-000, Brazil.
There is a lack of empirical studies of out-of-pocket health expenditures associated with dyslipidemias, which are major cardiovascular risk factors, especially in underrepresented admixed populations. The study investigates associations of health costs with lipid traits, GWAS-derived genetic risk scores (GRSs), and other cardiometabolic risk factors. Data from the observational cross-sectional 2015 ISA-Nutrition comprised lifestyle, environmental factors, socioeconomic and demographic variables, and biochemical and genetic markers related to the occurrence of cardiometabolic diseases.
View Article and Find Full Text PDFJ Bodyw Mov Ther
October 2024
Graduate Program in Biological Sciences - Physiology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil; Graduate Program in Nutrition Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil; Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil.
Purpose: To evaluate the effects of an intradialytic aerobic exercise training program on the expression of transcription factors nuclear factor κappa B (NF-κB) and nuclear factor erythroid 2-related factor 2 (Nrf2), related to inflammatory and antioxidant pathways, respectively, in patients with chronic kidney disease (CKD) on hemodialysis.
Methods: This was a longitudinal, randomized clinical trial with a washout period and crossover performed with 33 patients randomized into two groups: Exercise (individualized intradialytic aerobic exercise on an adapted stationary exercise bike) three times per week for three months and control (without exercise). After the washout period (1 month), the exercise group became the control, and the other group performed the exercises for another three months.
Autism Res
December 2024
Department of Microbiology, Institute of Biomedical Sciences (ICB-USP), University of São Paulo, São Paulo, SP, Brazil.
Autism spectrum disorder (ASD) is a complex neurodevelopmental condition that combines genetic and environmental factors. The human microbiota is colonized by permanent or transitory microorganisms, depending on the host and the external factors controlling their permanence. The composition of the gut microbiota (GM) in ASD individuals is notably different from that in controls, which may contribute to the clinical conditions observed in these individuals.
View Article and Find Full Text PDFFront Aging Neurosci
October 2024
Institute of Neuroimmunology, Slovak Academy of Sciences, Bratislava, Slovakia.
Introduction: Alzheimer's disease (AD) is marked by the accumulation of fibrillary aggregates composed of pathological tau protein. Although neuroinflammation is frequently observed in conjunction with tau pathology, current preclinical evidence does not sufficiently establish a direct causal role in tau tangle formation. This study aimed to evaluate whether chronic Toll-like receptor 4 (TLR4) stimulation, induced by a high dose of lipopolysaccharide (LPS, 5 mg/kg), exacerbates neurofibrillary tangle (NFT) pathology in a transgenic mouse model of tauopathy that expresses human truncated 151-391/3R tau, an early feature of sporadic AD.
View Article and Find Full Text PDFJ Vis Exp
October 2024
Graduate Program in Chemistry, University of São Paulo, Institute of Chemistry;
We present a method for real-time recording of human interaction with three-dimensional (3D) virtual objects. The approach consists of associating rotation data of the manipulated object with behavioral measures, such as eye tracking, to make better inferences about the underlying cognitive processes. The task consists of displaying two identical models of the same 3D object (a molecule), presented on a computer screen: a rotating, interactive object (iObj) and a static, target object (tObj).
View Article and Find Full Text PDFRev Bras Epidemiol
October 2024
Fundação Oswaldo Cruz, Aggeu Magalhães Institute, Department of Public Health - Recife (PE), Brazil.
Objective: To describe the sociodemographic, socio-occupational profile, and effects on the health of artisanal fishers from the state of Pernambuco, Brazil, affected by the oil disaster-crime in Brazil in 2019.
Methods: This is a cross-sectional epidemiological study, carried out in 16 municipalities on the coast of Pernambuco, with a sample made up of 1,259 artisanal fishers. A questionnaire containing 14 blocks was used, including socioeconomic issues, exposure to oil, among others.
Naunyn Schmiedebergs Arch Pharmacol
October 2024
Institute of Biological Sciences, Federal University of Goiás, Goiânia, GO, Brazil.
Chrysin (CHR) is a naturally occurring flavonoid found in the human diet, recognized for its potential in preventing neurodegenerative diseases. However, its limited water solubility restricts its bioavailability and therapeutic applications. To address this issue and bolster the neuroprotective properties of CHR for potential nutraceutical or medicinal use, we investigated a novel compound, LQFM280, formed by conjugating CHR with β-d-glucose tetraacetate.
View Article and Find Full Text PDFSci Rep
October 2024
Institute of Neuroimmunology, Slovak Academy of Sciences, Dúbravská Cesta 9, Bratislava, Slovak Republic.
Psychiatry Res
December 2024
School of Pharmacy and Biomolecular Sciences, RCSI University of Medicine and Health Sciences, Dublin, Ireland; Jiangsu Key Laboratory of Translational Research and Therapy for Neuropsychiatric Disorders, Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China. Electronic address:
Development of the craniofacies occurs in embryological intimacy with development of the brain and both show normal left-right asymmetries. While facial dysmorphology occurs to excess in psychotic illness, facial asymmetry has yet to be investigated as a putative index of brain asymmetry. Ninety-three subjects (49 controls, 22 schizophrenia, 22 bipolar disorder) received 3D laser surface imaging of the face.
View Article and Find Full Text PDFSensors (Basel)
August 2024
Systems Engineering and Computer Science Graduate Program (PESC)/COPPE, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-972, RJ, Brazil.
Maritime traffic is essential for global trade but faces significant challenges, including navigation safety, environmental protection, and the prevention of illicit activities. This work presents a framework for detecting illegal activities carried out by vessels, combining navigation behavior detection models with rules based on expert knowledge. Using synthetic and real datasets based on the Automatic Identification System (AIS), we structured our framework into five levels based on the Joint Directors of Laboratories (JDL) model, efficiently integrating data from multiple sources.
View Article and Find Full Text PDFPLoS One
September 2024
Department of Nutrition, School of Public Health, University of São Paulo, São Paulo, São Paulo, Brazil.
Objectives: To develop an allometric body mass index (ABMI) reference that adjusts the weight in relation to height, taking into account the changes during development (MULT ABMI reference), and to compare it with international BMI references.
Methods: The MULT ABMI reference was constructed through the LMS method, calculated with 65 644 ABMI observations of 17 447 subjects aged 5-22 years, from the United Kingdom, Ethiopia, India, Peru, Vietnam, Portugal, and Brazil. The M, S, and L curves of the MULT ABMI reference were compared with the curves of the MULT, World Health Organization (WHO), Centers for Disease Control and Prevention (CDC), International Obesity Task Force (IOTF), and Dutch Growth Study (DUTCH).
Stem Cells
November 2024
BIH Center for Regenerative Therapies (BCRT), Charité Universitätzsmedizin, corporate member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health (BIH), 10117 Berlin, Germany.
Advanced bioinformatics analysis, such as systems biology (SysBio) and artificial intelligence (AI) approaches, including machine learning (ML) and deep learning (DL), is increasingly present in stem cell (SC) research. An approximate timeline on these developments and their global impact is still lacking. We conducted a scoping review on the contribution of SysBio and AI analysis to SC research and therapy development based on literature published in PubMed between 2000 and 2024.
View Article and Find Full Text PDFHGG Adv
October 2024
Institute of Computer Science, University of Tartu, Tartu, Estonia. Electronic address:
Identifying causal genes underlying genome-wide association studies (GWASs) is a fundamental problem in human genetics. Although colocalization with gene expression quantitative trait loci (eQTLs) is often used to prioritize GWAS target genes, systematic benchmarking has been limited due to unavailability of large ground truth datasets. Here, we re-analyzed plasma protein QTL data from 3,301 individuals of the INTERVAL cohort together with 131 eQTL Catalog datasets.
View Article and Find Full Text PDFScand Cardiovasc J
December 2024
Department of Cardiology, University of Tartu, Tartu, Estonia.
. Chronic kidney disease (CKD) and diabetes mellitus (DM) contribute significantly to cardiovascular disease (CVD) and mortality, with prevalence increasing. The evolving demographic of myocardial infarction (MI) patients, influenced by sedentary lifestyles and advanced medical care, lacks understanding regarding the interplay of CKD, DM, age, and post-MI mortality.
View Article and Find Full Text PDFFront Public Health
August 2024
Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Infants growing up in low- and middle-income countries are at increased risk of suffering adverse childhood experiences, including exposure to environmental pollution and lack of cognitive stimulation. In this study, we aimed to examine the levels of metals in the human milk of women living in São Paulo City, Brazil, and determine the effects on infants' neurodevelopment. For such, a total of 185 human milk samples were analyzed for arsenic (As), lead (Pb), mercury (Hg), and cadmium (Cd) using inductively coupled plasma mass spectrometry (ICP-MS).
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