Publications by authors named "Barbara Thorand"

Background: We sought to investigate the association between circulating inflammatory and cardiovascular proteomics biomarkers and cardiac autonomic nervous dysfunction-sensitive heart rate variability indices.

Methods: Using the population-based KORA (Cooperative Health Research in the Region of Augsburg) cohort, 233 proteomics biomarkers were quantified in baseline plasma samples of 1389 individuals using proximity extension assay technology. Five heart rate variability indices (Rényi entropy of the histogram with order [α] 4, total power of the density spectra, SD of word sequence, SD of the short-term normal-to-normal interval variability, compression entropy) were assessed at baseline in 982 individuals and in 407 individuals at baseline and at 14-year follow-up.

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Background And Aims: The major predictors of future coronary heart disease (CHD) events in individuals without traditional modifiable cardiovascular risk factors (CVRFs) remain unknown. We investigated the association between circulating biomarkers, reflecting residual risk, with incident CHD in a general population, according to the presence of five CVRFs (hypertension, diabetes mellitus, hypercholesterolemia, smoking and obesity) at baseline.

Methods: Overall 212,598 CHD-free individuals from 21 European population-based cohorts were stratified by CVRF burden into three groups, having zero (n = 35,707), one (n = 68,548) or ≥2 (n = 108,343) risk factors at baseline.

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Background: Steatotic liver disease is a major public health issue, with hepatic iron overload exacerbating fibrotic conditions. This study aimed to identify metabolites associated with hepatic fat and/or iron overload using targeted metabolomics in a population-based cohort.

Methods: We used the cross-sectional KORA-MRI study (N = 376 individuals).

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Background: Previous studies suggest that afamin is associated with steatotic liver diseases (SLD). However, the exact role of afamin in SLD development and fibrogenesis remains unclear. Potential modifying effects of sex and glucose tolerance status have also not been examined.

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Atherosclerosis progresses silently over decades before manifesting clinically as myocardial infarction or stroke. Currently, no circulating biomarker reliably quantifies the burden of atherosclerosis beyond imaging techniques. Here, we sought to define plasma proteomic signatures that reflect the systemic burden of atherosclerosis.

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Aims: Deleterious effects Lipoprotein (a) (Lp(a)) might be mitigated by overall cardiovascular (CV) risk reduction. However, data on the relationship between increased Lp(a) and incident coronary heart disease (CHD) according to the distribution of modifiable CV risk factors (CVRF) at baseline are still scarce. We investigated the association between high Lp(a) and incident CHD in the general population, depending on the presence/absence of four major CVRFs (hypertension, diabetes, hypercholesterolemia, smoking) at baseline.

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Objective: Concentrations of soluble alpha klotho (sαKL) are higher in active acromegaly compared with healthy controls. However, reference intervals based on large population-based samples are lacking, and the impact of many biological variables is unclear.

Design: Cross-sectional study.

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Background: It has been hypothesized but seldom tested that the winter excess in cardiovascular disease (CVD) is related to hypovitaminosis D. The present study examined the association between CVD and (i) seasonality of 25-hydroxyvitamin D (25[OH]D) and (ii) individual 25(OH)D concentrations.

Methods And Findings: Harmonized 25(OH)D data were obtained from the Biomarkers for Cardiovascular Risk Assessment in Europe (BiomarCaRE) project, including 79,570 participants examined between 1984 and 2010.

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Article Synopsis
  • Five risk factors (hypertension, hyperlipidemia, obesity, diabetes, smoking) contribute significantly to global cardiovascular disease burden.
  • A study analyzed data from over 2 million people worldwide to understand how these factors affect lifetime risks and potential life-years free of disease and death.
  • Results revealed that having all risk factors increases cardiovascular disease risk significantly, while addressing hypertension and smoking in middle age can lead to the most additional life-years free of disease and death.
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The impact of different drinking solutions used for an oral glucose tolerance test (oGTT) on 2-h glucose values and gastrointestinal side effects are not clear. This study compared a commercially produced solution (Accu-Chek Roche solution) and a standardized pharmacy solution (NRF 13.8.

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Background: Using a data-driven approach, six clusters with different risk profiles and burden of complications were recently identified in middle-aged people before the diagnosis of type 2 diabetes (T2D). We aimed to investigate whether these clusters could be generalised to older people and if subclinical inflammation was related to their cardiometabolic risk profiles.

Methods: We assigned 843 participants of the KORA F4 study aged 61-82 years without T2D to the six previously defined phenotype-based clusters.

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Background: Type 2 diabetes (T2D) has been linked to changes in DNA methylation levels, which can, in turn, alter transcriptional activity. However, most studies for epigenome-wide associations between T2D and DNA methylation comes from cross-sectional design. Few large-scale investigations have explored these associations longitudinally over multiple time-points.

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Article Synopsis
  • Distal sensorimotor polyneuropathy (DSPN) is a prevalent neurological condition affecting older adults and those with obesity or diabetes, leading to significant health issues.
  • The Interpretable Multimodal Machine Learning (IMML) framework was used to predict the prevalence and incidence of DSPN by analyzing a diverse set of data from over 1,000 participants, including clinical, genomic, and metabolomic information.
  • Results showed that while clinical data alone could differentiate DSPN cases, combining it with additional molecular data improved prediction accuracy and identified potential biomarkers related to inflammation and fatty acid metabolism, offering new insights for treatment and prevention strategies.
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Background: Frailty, resilience and intrinsic capacity (IC) are concepts to evaluate older person`s health status, but no comparison of their associations with adverse health outcomes exists. We therefore aimed to assess which concept is most useful for determining long-term health of older adults.

Methods: Analyses were based on the KORA (Cooperative Health Research in the Region of Augsburg)-Age study (n = 940, 65-93 years).

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Article Synopsis
  • MRI can identify key biomarkers like bone marrow fat-fraction (BMFF), skeletal muscle fat-fraction (SMFF), and total adipose tissue (TAT) to assess conditions related to osteosarcopenic adiposity (OSA) in individuals.
  • In a study with 363 participants, 81 (22.3%) were classified with OSA, characterized by older age, higher SMFF levels, and greater body mass index (BMI).
  • The OSA subgroup also showed the highest prevalence of health issues such as impaired glucose tolerance, high blood pressure, higher cholesterol levels, and liver fat accumulation, suggesting the importance of MRI in monitoring these health risks.
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Understanding the genetics of kidney function decline, or trait change in general, is hampered by scarce longitudinal data for GWAS (longGWAS) and uncertainty about how to analyze such data. We use longitudinal UK Biobank data for creatinine-based estimated glomerular filtration rate from 348,275 individuals to search for genetic variants associated with eGFR-decline. This search was performed both among 595 variants previously associated with eGFR in cross-sectional GWAS and genome-wide.

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Background: Sex differences exist in type 2 diabetes (T2D), and androgens have been implicated in the etiology of T2D in a sex-specific manner. We therefore aimed to investigate whether androgens play a role in explaining sex differences in glucose homeostasis and incidence of T2D.

Methods: We used observational data from the German population-based KORA F4 study (n = 1975, mean age: 54 years, 41% women) and its follow-up examination KORA FF4 (median follow-up 6.

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Aims: A data-driven cluster analysis in a cohort of European individuals with type 2 diabetes (T2D) has previously identified four subgroups based on clinical characteristics. In the current study, we performed a comprehensive statistical assessment to (1) replicate the above-mentioned original clusters; (2) derive de novo T2D subphenotypes in the Kooperative Gesundheitsforschung in der Region Augsburg (KORA) cohort and (3) describe underlying genetic risk and diabetes complications.

Methods: We used data from n = 301 individuals with T2D from KORA FF4 study (Southern Germany).

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Background: Protein biomarkers may contribute to the identification of vulnerable subgroups for premature mortality. This study aimed to investigate the association of plasma proteins with all-cause and cause-specific mortality among individuals with and without baseline type 2 diabetes (T2D) and evaluate their impact on the prediction of all-cause mortality in two prospective Cooperative Health Research in the Region of Augsburg (KORA) studies.

Methods: The discovery cohort comprised 1545 participants (median follow-up 15.

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Background: There is insufficient evidence to provide recommendations for leisure-time physical activity among workers across various occupational physical activity levels. This study aimed to assess the association of leisure-time physical activity with cardiovascular and all-cause mortality across occupational physical activity levels.

Methods: This study utilized individual participant data from 21 cohort studies, comprising both published and unpublished data.

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Objective: Health effects of different physical activity domains (ie, during leisure time, work and transport) are generally considered positive. Using data, we assessed independent associations of occupational and leisure-time physical activity (OPA and LTPA) with all-cause mortality.

Design: Two-stage individual participant data meta-analysis.

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Article Synopsis
  • Understanding how kidney function ages is crucial for identifying those at risk for chronic kidney disease.
  • This study analyzed data from four German cohorts over 25 years, focusing on estimated glomerular filtration rates (eGFR) from blood tests to provide age-specific reference values.
  • Findings indicate that eGFR declines linearly with age, and the study offers tools for clinicians to evaluate eGFR based on patients' age and health profiles.
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  • Oxidative stress is linked to distal sensorimotor polyneuropathy (DSPN), and this study explores the role of selenoprotein P, an antioxidant protein, in individuals with and without type 2 diabetes (T2D).
  • In a study with over 1,000 participants, higher levels of selenoprotein P were found to be protective against prevalent DSPN in individuals without T2D, while no such association was observed in those with T2D.
  • The findings suggest that lower levels of selenoprotein P are associated with a higher prevalence of DSPN in older adults without T2D, highlighting the need for further research to understand the antioxidant properties of s
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