1,450 results match your criteria: "Division of Clinical Epidemiology and Aging Research[Affiliation]"

Background: Post-operative anaemia is linked to iron deficiency. We investigated the prognostic value of post-operative iron biomarkers in colorectal cancer (CRC).

Methods: Ferritin, transferrin, iron, and transferrin saturation (TS%) were measured from blood collected at a single time-point post-surgery in 2769 CRC patients.

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Background: Polygenic risk scores (PRS) and subjective cognitive decline (SCD) are associated with the risk of developing dementia. It remains to examine whether they can improve the established cardiovascular risk factors aging and dementia (CAIDE) model and how their predictive abilities compare.

Methods: The CAIDE model was applied to a sub-sample of a large, population-based cohort study (n = 5,360; aged 50-75) and evaluated for the outcomes of all-cause dementia, Alzheimer's disease (AD) and vascular dementia (VD) by calculating Akaike's information criterion (AIC) and the area under the curve (AUC).

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Single nucleotide polymorphism (SNP) interactions are the key to improving polygenic risk scores. Previous studies reported several significant SNP-SNP interaction pairs that shared a common SNP to form a cluster, but some identified pairs might be false positives. This study aims to identify factors associated with the cluster effect of false positivity and develop strategies to enhance the accuracy of SNP-SNP interactions.

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: Potential calcium-related adverse events of vitamin D supplement use have not been addressed in large-scale, real-world data so far. Leveraging data from the UK Biobank, encompassing 445,493 individuals aged 40-69, we examined associations of high 25-hydroxyvitamin (25(OH)D) levels ≥ 100 nmol/L and vitamin D supplementation with hypercalcemia (serum calcium > 2.6 mmol/L), kidney stones, and atherosclerosis assessments (pulse wave arterial stiffness index and carotid intima-medial thickness).

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Elevated body mass index (BMI) is linked to increased pancreatic cancer (PC) risk. Cancer-associated weight loss can occur years before the malignancy is diagnosed. This might have led to underestimation of the BMI-PC association.

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An International Registry Study of Early-Stage NSCLC treatment variations (LUCAEUROPE) in Europe and the USA highlighting variations.

Eur J Cancer

September 2024

Department of Thoracic Surgery, Thoraxklinik at Heidelberg University Hospital, Germany; Translational Lung Research Center Heidelberg (TLRC), German Center for Lung Research (DZL), Germany.

Objective: Harmonized European NSCLC incidence, treatment approach, and survival based on national tumor registries are unclear.

Summary Background Data: Surgery has the potential to cure NSCLC and significantly prolong survival. This large-scale international study aimed to investigate treatment variations in Europe and the USA, as well as the determinants for its utilization.

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Folate intake and colorectal cancer risk according to genetic subtypes defined by targeted tumor sequencing.

Am J Clin Nutr

September 2024

Public Health Sciences Division, Fred Hutchinson Cancer Center, Seattle, WA, United States; Department of Epidemiology, University of Washington, Seattle, WA, United States.

Article Synopsis
  • Folate intake plays a crucial role in genetic and metabolic processes, and low levels are linked to higher cancer risk, specifically colorectal cancer (CRC).
  • The study analyzed dietary and supplemental folate intake among participants with CRC, investigating how this intake relates to specific genetic mutations using advanced sequencing techniques.
  • Results indicated that higher total folate intake generally reduced CRC risk, but the impact varied when considering mutation status in tumors, with a few specific gene mutations showing different associations with folate intake.
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Introduction: Subjective hearing and memory problems are detectable earlier than objective measures of sensory loss and cognitive decline, which are known to be related to an increased risk of dementia in later life.

Methods: Using a population-representative cohort of 6006 individuals (aged 50-75) we examined whether participants who self-reported hearing and short-term memory issues showed greater rates of dementia within 17 years of follow-up. A sub-cohort was tested for audiometric threshold and cognition after 14 years.

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The mitochondrial cascade hypothesis of Alzheimer's disease (AD) has been portrayed through molecular, cellular, and animal studies; however large epidemiological studies are lacking. This study aimed to explore the association of mitochondrial DNA copy number (mtDNAcn), a marker representative of mtDNA abundance per cell, with risk of incident all-cause dementia, AD, and vascular dementia diagnosis within 17 years and dementia-related blood biomarkers (P-tau181, GFAP, and NfL). Additionally, sex-stratified analyses were completed.

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Understanding the genetic complexity of puberty timing across the allele frequency spectrum.

Nat Genet

July 2024

MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus, Cambridge, UK.

Article Synopsis
  • Scientists looked at the timing of when girls start their periods (called menarche) and how it can affect their health later in life.
  • They studied about 800,000 women and found over a thousand genetic signals that influence when menstruation starts.
  • Some women have a much higher chance of starting their periods too early or too late based on their genetic makeup, suggesting that genes play a big role in this process!
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Article Synopsis
  • CoRSIVs are regions in the genome with consistent DNA methylation patterns across tissues but show individual differences and are influenced by nearby genetic variants.
  • This study focused on investigating SNPs within CoRSIVs and their potential link to pancreatic ductal adenocarcinoma (PDAC) risk, analyzing data from over 14,000 patients and 247,000 controls.
  • The research identified that the A allele of SNP rs2976395 is linked to a higher risk of PDAC in Europeans and is associated with changes in DNA methylation and overexpression of the prostate stem cell antigen gene, highlighting the need for further functional studies.
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Article Synopsis
  • DNA methylation biomarkers in colorectal cancer (CRC) tissues could serve as useful prognostic indicators, but past studies have shown mixed results, highlighting the need for external validation.
  • A systematic search and meta-analysis were conducted involving 2,303 CRC patients, assessing associations of 151 single gene and 29 multiple gene biomarkers with patient prognosis using Cox regression analyses.
  • The analysis found 37 single gene and seven multi-gene biomarkers significantly linked to CRC prognosis, with strong evidence for specific genes like CDKN2A and MLH1, suggesting these candidates warrant further clinical investigation.
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Objectives: The risk of Post-COVID-19 condition (PCC) under hybrid immunity remains unclear.

Methods: Using data from the German National Cohort (NAKO Gesundheitsstudie), we investigated risk factors for self-reported post-infection symptoms (any PCC is defined as having at least one symptom, and high symptom burden PCC as having nine or more symptoms).

Results: Sixty percent of 109,707 participants reported at least one previous SARS-CoV-2 infection; 35% reported having had any symptoms 4-12 months after infection; among them 23% reported nine or more symptoms.

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Objectives: To investigate gender-specific factors associated with case complexity in a population-based sample of middle-aged and older adults using a holistic approach to complexity.

Methods: Data were derived from the 8-year follow-up home visits of the ESTHER study-a German population-based study in middle-aged and older adults. Cross-sectional analyses were conducted for 2932 persons (aged 57-84).

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Two genome-wide interaction loci modify the association of nonsteroidal anti-inflammatory drugs with colorectal cancer.

Sci Adv

May 2024

Division of Biostatistics, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.

Article Synopsis
  • * Researchers analyzed data from 52 studies, including nearly 31,000 CRC cases and over 41,000 controls, to explore the genetic interactions with regular aspirin/NSAID use.
  • * They found significant interactions with genetic variants in two specific regions (6q24.1 and 5p13.1), which could help uncover new targets for understanding how aspirin provides its protective effects against colorectal cancer.
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In the spectrum of colorectal tumors, microsatellite-stable (MSS) tumors with DNA polymerase ε (POLE) mutations exhibit a hypermutated profile, holding the potential to respond to immunotherapy similarly to their microsatellite-instable (MSI) counterparts. Yet, due to their rarity and the associated testing costs, systematic screening for these mutations is not commonly pursued. Notably, the histopathological phenotype resulting from POLE mutations is theorized to resemble that of MSI.

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Aims: The 2021 European Society of Cardiology prevention guidelines recommend the use of (lifetime) risk prediction models to aid decisions regarding initiation of prevention. We aimed to update and systematically recalibrate the LIFEtime-perspective CardioVascular Disease (LIFE-CVD) model to four European risk regions for the estimation of lifetime CVD risk for apparently healthy individuals.

Methods And Results: The updated LIFE-CVD (i.

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Genome-wide interaction study of dietary intake of fibre, fruits, and vegetables with risk of colorectal cancer.

EBioMedicine

June 2024

Division of Biostatistics, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA. Electronic address:

Article Synopsis
  • Consumption of fiber, fruits, and vegetables may lower the risk of colorectal cancer (CRC), but genetic factors might influence this connection.
  • A large study involving nearly 70,000 participants identified two significant genetic variants linked to dietary intake and CRC risk using advanced statistical methods.
  • The findings suggest specific genetic loci (SLC26A3 and NEGR1) may affect how fiber and fruit consumption interacts with CRC risk, highlighting the need for more research on the underlying mechanisms.
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  • The study investigates the prognostic significance of combining microsatellite instability (MSI) status and tumor-infiltrating lymphocytes (TIL) in colorectal cancer, aiming to identify distinct cancer subtypes with varying survival outcomes.
  • A systematic review and network meta-analysis were conducted, including 21 studies with over 14,000 patients, focusing on post-surgery colorectal cancer cases and excluding studies on neoadjuvant therapy.
  • The meta-analysis evaluates overall survival, disease-free survival, and cancer-specific survival based on different MSI and TIL combinations, with findings aimed at providing a comprehensive understanding of these subtypes' impact on patient prognosis.
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  • - Insufficient physical activity (PA) is a major risk factor for non-communicable diseases and has significant economic impacts on healthcare systems; this study analyzed the cost differences between varying levels of PA in Germany.
  • - Data was collected from over 157,000 participants using the Global Physical Activity Questionnaire to assess their PA levels and categorize them as sufficient or insufficient, with costs calculated from self-reported health resource use and productivity losses.
  • - Findings showed that individuals with insufficient PA incurred higher average annual healthcare costs and that these cost differences were more pronounced in older adults, particularly concerning leisure activities, suggesting different cost implications based on the type of PA.
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Article Synopsis
  • Colorectal cancer (CRC) is a widely increasing disease linked to high body mass index (BMI), but the exact biological processes connecting these two factors are not well understood.
  • The study employed Mendelian randomization to explore various biomarkers and lifestyle factors potentially mediating the impact of BMI on CRC risk, focusing on elements like inflammation, insulin levels, and physical activity.
  • The findings indicated that higher genetically predicted BMI correlates with increased CRC risk, with evidence suggesting that the relationship might be partly mediated by plasma IGF1, while smoking and physical activity appear to complicate the association rather than mediate it.
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