نتایج جستجو برای: telomere shortening
تعداد نتایج: 29708 فیلتر نتایج به سال:
Significance Telomeres play an important role in aging, and having relatively short telomeres is associated with increased risk of death humans other animals. Telomere length influenced by both genetic environmental factors, which could potentially drive the positive association survival. We used lifelong telomere measurements from a population wild sheep to disentangle this relationship. Our a...
The long noncoding telomeric repeat containing RNA (TERRA) is expressed at chromosome ends. TERRA upregulation upon experimental manipulation or in ICF (immunodeficiency, centromeric instability, facial anomalies) patients correlates with short telomeres. To study the mechanism of telomere length control by TERRA in Saccharomyces cerevisiae, we mapped the transcriptional start site of TERRA at ...
Ten-eleven translocation (Tet) family proteins convert 5-methylcytosine to 5-hydroxymethylcytosine. We show that mouse embryonic stem cells (ESCs) depleted of Tet1 and/or Tet2 by RNAi exhibit short telomeres and chromosomal instability, concomitant with reduced telomere recombination. Tet1 and Tet2 double-knockout ESCs also display short telomeres but to a lesser extent. Notably, Tet1/2/3 tripl...
Telomeres are DNA repeats at the ends of linear chromosomes in eukaryotic cells; they form cap-like specialized structures at chromosome ends to protect them from digestion and degradation. With each cell division, somatic cell telomeres progressively wear and shorten, leading to cell senescence. Various environmental factors, such as oxidative stress and inflammation, can accelerate telomere s...
The main mechanism of pathogenesis which causes systemic complications in obstructive sleep apnea (OSA) patients is believed to be intermittent hypoxia-induced intermediary effect and it depends on the burden of oxidative stress during sleep. We aimed to search the predictive markers which reflect the burden of systemic oxidative stress in patients with OSA and whether excessive telomere length...
Telomeres are short tandem repeated sequences of DNA found at the ends of eukaryotic chromosomes that function in stabilizing chromosomal end integrity. In vivo studies of somatic tissue of mammals and birds have shown a correlation between telomere length and organismal age within species, and correlations between telomere shortening rate and lifespan among species. This result presents the ta...
Reduced telomere length has been associated with aging and age-related diseases. Latent infection with the Cytomegalovirus (CMV) induces telomere shortening in the infected cells. Latent CMV infection may cause reduced telomere length via GABP transcription factor deficiency, according to the Microcompetition Theory. Microcompetition and viral-induced transcription factor deficiency is importan...
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