Immune aging and infectious diseases DOI Creative Commons
Ruochan Chen,

Zou Ju,

Jun Chen Chen

et al.

Chinese Medical Journal, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 16, 2024

Abstract The rise in global life expectancy has led to an increase the older population, presenting significant challenges managing infectious diseases. Aging affects innate and adaptive immune systems, resulting chronic low-grade inflammation (inflammaging) function decline (immunosenescence). These changes would impair defense mechanisms, susceptibility infections reduce vaccine efficacy adults. Cellular senescence exacerbates these issues by releasing pro-inflammatory factors, further perpetuating inflammation. Moreover, comorbidities, such as cardiovascular disease diabetes, which are common adults, amplify dysfunction, while immunosuppressive medications complicate responses infections. This review explores molecular cellular mechanisms driving inflammaging immunosenescence, focusing on genomic instability, telomere attrition, mitochondrial dysfunction. Additionally, we discussed how aging-associated alterations influence bacterial, viral, parasitic evaluated emerging antiaging strategies, aimed at mitigating effects improve health outcomes aging population.

Language: Английский

Keeping well with dementia: supporting the person with dementia to function to capacity DOI

Linda Nazarko

British Journal of Community Nursing, Journal Year: 2025, Volume and Issue: 30(3), P. 118 - 122

Published: Feb. 26, 2025

Nearly a million people are living with dementia in the UK, and less than 65% of them have been formally diagnosed according to Alzheimer's Society. Dementia exists on continuum can mild, moderate or severe symptoms. People more likely experience health problems same age who do not dementia. affects ability understand relate world manage conditions. This article discusses how person be helped maintain enjoy best possible quality life.

Language: Английский

Citations

0

Gene Expression Changes as Biomarkers of Immunosenescence in Bulgarian Individuals of Active Age DOI Creative Commons
Dragomira Nikolova, Yana Todorova,

Zora Hammoudeh

et al.

Biomedicines, Journal Year: 2025, Volume and Issue: 13(3), P. 721 - 721

Published: March 15, 2025

Background/Objectives: Immunosenescence implies innate and adaptive immunity dysfunction, which naturally occurs with aging. It is a complex multifactorial process can be triggered by either genetic changes, immune changes or both. Numerous research studies have shown that the of senescence goes alongside chronic activation. The purpose this study to analyze in expression genes associated responses order identify reliable biomarkers for Methods: For aim, 55 clinically healthy individuals active age (21–65 years) were distributed based on immunophenotyping two groups, without signs premature senescence. A gene analysis was subsequently made those differentially expressed presented interpreted. Results: Altogether, forty-eight (48) exhibited differential between most showed up-regulation (45) (fold change more than 2), only three down-regulated less −2). highest positive fold IL-1β (10.76), BCL6 (13.25) CCL4 (15.91), while negative documented IL23R (−3.10), IL5 (−2.66) PTGS2 (COX-2) (−2.15). Conclusions: Our results reveal immunosenescence positively inflammation, typical aging process. On other hand, we identified markers possible protective effects against oxidative stress tumorigenesis. These findings aid early diagnosis degenerative diseases subclinical phase, as well development strategies prevent processes

Language: Английский

Citations

0

Development and validation of a biological frailty score based on CRP, haemoglobin, albumin and vitamin D within an electronic health record database in France: a cross-sectional study DOI Creative Commons
Aurélie Mailliez, Maxime Leroy, Michaël Génin

et al.

BMJ Public Health, Journal Year: 2025, Volume and Issue: 3(1), P. e001941 - e001941

Published: Jan. 1, 2025

Objectives To easily detect frailty in a timely fashion, enabling targeted interventions and appropriate monitoring, will be major worldwide public health economic challenge as the proportion of older people increases population. Based on review meta-analysis showing that C-reactive protein (CRP), haemoglobin, albumin vitamin D are associated with frailty, we aimed to develop validate biological score using these biomarkers for detection frailty. Design We conducted retrospective, cross-sectional, monocentric study electronic healthcare database Lille University Hospital, France. Participants Inclusion criteria were patients aged 50 over, being hospitalised at Hospital between 1 January 2008 31 December 2021. identified whose CRP, levels measured. selected assays fell within normal thresholds, outside acute clinical situations. Main outcome measures assess used scale adapted database, called Frailty Risk Score. predictive score, whole population was divided into development validation cohort. Results 26 554 included, which 17 702 cohort 8852 results multivariate analysis, developed an equation combining age sex obtain referred bFRAil (biological FRAilty) score. Within cohort, area under curve this is 0.78 (0.77–0.80) negative value 83.7%. Conclusions This has made it possible, first time, hospital setting based simple, measurable identifying frail daily medical practice. Further studies needed its use.

Language: Английский

Citations

0

Development of Meat‐Based Formulations for 3D Printed Products Oriented to Dysphagia Diet DOI

Aušrinė Kurapkienė,

Rimantė Vinauskienė, Viktorija Eisinaitė

et al.

Journal of Texture Studies, Journal Year: 2025, Volume and Issue: 56(2)

Published: March 1, 2025

Textural modification and nutritional customization of food is considered an effective strategy to ensure safe swallowing prevent malnutrition in people with dysphagia, while improving quality life physical health. The aim the present study was evaluate effect added fat 15%-16% (in form pork fat, liquid oil or bigel structured collagen mono- diglycerides fatty acids), fibers (3.0%) lingonberry pomace protein (2.0%-3.0%) as well interactions between them on stability, rheological textural properties, color printing performance meat-based ink formulations its application dysphagia diet. Results showed that all samples exhibited shear-thinning behavior (the viscosity a material decreases shear rate increases) n < 1. Pork fiber incorporation increase concentration affected apparent viscosity, consistency coefficient, elasticity loss modulus values. Structured addition helped create more stable gel-like network (confirmed by higher elastic G' hardness values) provided stability matrix trapping inside phase, affecting post-printing (> 98%) after thermal treatment (80%-93%). Thermally treated were selected labeled Level 6 (soft bite-sized), defined International Dysphagia Diet Standardization Initiative (IDDSI) framework, suggesting they suit mild dysphagia. outcome this provides insights into how tailor meet needs patients.

Language: Английский

Citations

0

Role of brain-derived neurotrophic factor in frailty: From mechanisms to interventions DOI

Yuanchun Xu,

Ziyan Liu,

Jiao Xu

et al.

Biomedicine & Pharmacotherapy, Journal Year: 2025, Volume and Issue: 186, P. 118016 - 118016

Published: April 6, 2025

Language: Английский

Citations

0

A cross-tissue transcriptome-wide association study identifies new susceptibility genes for frailty DOI Creative Commons

Daoyi Lin,

Shuyan Wu,

Wangyu Li

et al.

Frontiers in Genetics, Journal Year: 2024, Volume and Issue: 15

Published: July 12, 2024

Background: Although genome-wide association studies (GWAS) have identified 14 loci associated with frailty index (FI) susceptibility, the underlying causative genes and biological mechanisms remain elusive. Methods: A cross-tissue transcriptome-wide study (TWAS) was conducted utilizing Unified Test for Molecular Markers (UTMOST), which integrates GWAS summary statistics from 164,610 individuals of European ancestry 10,616 Swedish participants, alongside gene expression matrices Genotype-Tissue Expression (GTEx) Project. Validation significant performed through three distinct methods: FUSION, FOCUS, Multiple Marker Analysis Genome-wide Annotation (MAGMA). Exploration tissue functional enrichment FI-associated SNPs using MAGMA. Conditional joint analyses, along fine mapping, were employed to enhance our understanding FI’s genetic architecture. Mendelian randomization ascertain causal relationships between FI, co-localization analysis utilized investigate shared FI. Results: In this study, two novel susceptibility risk FI application four TWAS methods. demonstrated that HTT may elevate developing frailty, whereas LRPPRC could offer protection against onset frailty. Additionally, a SNP Tissue analyses revealed genomic regions linked predominantly enriched in various brain regions, including frontal cortex, cerebral cerebellar hemispheres. Conditional, combined mapping collectively frailty: 2p21 4q16.3. Functional pathways primarily related MHC complex, PD-1 signaling, cognition, inflammatory response antigenic stimuli, production second messenger molecules. Conclusion: This investigation uncovers newly forecasted levels offering new perspectives on architecture

Language: Английский

Citations

2

Causal association between air pollution and frailty: a Mendelian randomization study DOI Creative Commons
Haixia Xiao, Shan Huang,

Wei Yang

et al.

Frontiers in Public Health, Journal Year: 2023, Volume and Issue: 11

Published: Nov. 7, 2023

Backgrounds Frailty is a significant problem for older persons since it linked to number of unfavorable consequences. According observational researches, air pollution may raise the risk frailty. We investigated causal association between frailty and (including PM 2.5 , 2.5–10 10 nitrogen dioxide, oxides) using Mendelian randomization approach. Methods conducted MR analysis extensive publically accessible GWAS (genome-wide studies) summary data. The inverse variance weighted (IVW) method was employed as primary method. median model, MR-Egger, simple model approaches were chosen quality control. Cochran’s Q test utilized evaluate heterogeneity. Pleiotropy found MR-Egger regression test. MR-PRESSO used recognize outliers. leave-one-out strategy conduct sensitivity analysis. Results results suggested that statistically significantly associated with [odds ratio (OR) = 1.33; 95%confidence interval (CI) 1.12–1.58, p 0.001] in IVW observed no statistical (OR 1.00, 95% CI 0.79–1.28, 0.979), 0.91, 0.75–1.11, 0.364), dioxide 0.98, 0.85–1.12, 0.730), oxides 1.15, 0.98–1.36, 0.086) There pleiotropy results. based on showed individual single nucleotide polymorphisms (SNPs) did not affect robustness Conclusion current investigation shows Frailty’s detrimental progression be slowed down help prevention

Language: Английский

Citations

5

Causal association between genetically predicted circulating immune cell counts and frailty: a two-sample Mendelian randomization study DOI Creative Commons
Xiao-Guang Guo,

Ya-Juan Zhang,

Yaxin Lu

et al.

Frontiers in Immunology, Journal Year: 2024, Volume and Issue: 15

Published: Jan. 23, 2024

Background Despite the recognized link between immune responses and frailty, association cell counts frailty based on previous observational studies remains disputed, with uncertain causal nexus. This study aimed to elucidate genetically predicted circulating frailty. Methods We conducted two-sample Mendelian randomization (MR) independent genetic variants associated six subtype from genome-wide in 563,946 European individuals. Frailty summary data, assessed via index (FI), was obtained comprising 175,226 subjects. Univariate MR, reverse MR multivariate were comprehensive investigate FI, two-step analysis for mediation analysis. Results evidence indicated that among leukocyte counts, only elevated eosinophil count significantly correlated higher FI (β = 0.059, 95% confidence interval [CI], 0.042–0.078, P =5.63E-11), no relationship identified MR. In effect of retained statistical significance 0.063, CI, 0.021–0.104, 0.003). Ultimately, demonstrated two mediators this pathway: asthma (β= 0.019, 0.013–0.025, 35.84E-10, mediated proportion, 31.732%) rheumatoid arthritis 0.004, 0.001–0.006, =1.75E-03, 6.411%). Conclusions Within subtypes, had irreversible possibly serving as partial mediators. The finding stressed need further exploring physiological functions eosinophils order develop effective strategies against

Language: Английский

Citations

1

Elevated circulating procathepsin L as a potential biomarker of inflamm-aging DOI Creative Commons
Shu Zhu, Weiqiang Chen, Xiaoling Qiang

et al.

Medical Hypotheses, Journal Year: 2024, Volume and Issue: 186, P. 111322 - 111322

Published: March 14, 2024

Inflamm-aging is a condition of low-grade and chronic systemic inflammation characterized by increase in multiple inflammatory biomarkers such as tumor necrosis factor (TNF), interleukin 6 (IL-6), C-reactive protein (CRP), CXCL9 (MIG) experimental clinical settings. However, despite the recent identification extracellular procathepsin L (pCTS-L) novel mediator diseases sepsis, its possible role inflamm-aging was previously not investigated. In present study, we compared blood levels pCTS-L other 62 cytokines chemokines between young aged Balb/C mice Western blotting Cytokine Antibody Arrays. light surprising finding marked mice, propose that may serve another biomarker inflamm-aging. Given capacity inducing various (e.g., TNF IL-6), it will be important to test hypothetic under conditions.

Language: Английский

Citations

1

Self-reported Exhaustion and a 4-item Physical Frailty Index to Predict the Incidence of Major Complications after Onco-Geriatric Surgery DOI
Kathrin Scholtz,

Friedrich Borchers,

Rudolf Mörgeli

et al.

European Journal of Surgical Oncology, Journal Year: 2024, Volume and Issue: 50(7), P. 108421 - 108421

Published: May 23, 2024

Language: Английский

Citations

1