Alzheimer's Syndrome (AD) is a neurodegenerative disease that is prevalent in middle-aged and elderly people. As the disease progresses, patients gradually lose the ability to take care of themselves, which brings a heavy burden to the family. There is a link between leukocyte telomere length (LTL) and cognitive ability. To search for possible pathogenic mechanisms and potential therapeutic agents, we demonstrated a causal link between LTL and AD using Mendelian randomization analysis (MR). The expression of the target gene NBR2 and the downstream mRNA GJA1 and GJA1-related genes, pathway enrichment, and association with immune cells were further explored. Using the gene cluster-drug target interaction network, we obtained potential therapeutic drugs. Our study provides evidence for a causal link between AD and LTL, suggesting medicines that may treat and alleviate AD symptoms.
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http://dx.doi.org/10.18632/aging.206107 | DOI Listing |
Acta Neuropsychiatr
January 2025
Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway.
Objective: Accelerated ageing indexed by telomere attrition is suggested in schizophrenia spectrum- (SCZ) and bipolar disorders (BD). While inflammation may promote telomere shortening, few studies have investigated the association between telomere length (TL) and markers of immune activation and inflammation in severe mental disorders.
Methods: Leucocyte TL defined as telomere template/amount of single-copy gene template (T/S ratio), was determined in participants with SCZ ( = 301) or BD ( = 211) and a healthy control group (HC, = 378).
Mult Scler Relat Disord
January 2025
Lung Transplantation Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Electronic address:
Observational studies have suggested a link between leukocyte telomere length (LTL) and multiple sclerosis (MS) progression, but the causal relationship remains uncertain. This study investigates the causal association between LTL and MS progression using a bidirectional two-sample Mendelian randomization (MR) approach. We analyzed genome-wide association summary statistics data from 472,174 individuals for LTL and 12,584 MS patients for disease progression.
View Article and Find Full Text PDFBiol Lett
January 2025
Cluster of Biomolecular Science, Division of Toxicology, Wageningen University and Research, 6708 WE Wageningen, The Netherlands.
Dealing with infections is a daily challenge for wild animals. Empirical data show an increase in reactive oxygen species (ROS) production during immune response. This could have consequences on telomere length, the end parts of linear chromosomes, commonly used as proxy for good health and ageing.
View Article and Find Full Text PDFNat Commun
January 2025
Laboratory of Genome Diversification & Integrity, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125, Berlin, Germany.
The establishment of protective immune responses relies on the ability of terminally differentiated B cells to secrete a broad variety of antigen-specific antibodies with different effector functions. RIF1 is a multifunctional protein that promotes antibody isotype diversification via its DNA end protection activity during class switch recombination. In this study, we showed that RIF1 ablation resulted in increased plasmablast formation ex vivo and enhanced terminal differentiation into plasma cells upon immunization.
View Article and Find Full Text PDFFertil Steril
January 2025
Division of Reproductive Endocrinology & Infertility, University of California, San Francisco.
Objective: To study measures of endothelial health, cardiovascular risk, and cellular aging between PCOS patients and a reproductive age normative cohort.
Design: Cross-sectional study.
Subjects: Community-based PCOS patients and a normative ovarian aging cohort as controls, aged 45 or younger at the time of evaluation.
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