View clinical trials related to Telomere Length, Mean Leukocyte.
Filter by:Intense stress has harmful effects on the body, contributing to various disorders. Breast cancer patients experience a build-up of stress due to their diagnosis and treatments. Stress can cause epigenetic changes in a cellular level (such as accelerated increase in biological age) that may negatively affect oncological treatments. This study aims to investigate the effect of stress management, specifically the Pythagorean Self-Awareness Intervention, on telomere length in T-leukocytes of breast cancer patients after completing all treatments except hormonal therapy. The study involves self-referred questionnaires, hair cortisol collection, and blood material extraction. Understanding the role of stress management in breast cancer may lead to improved patient outcomes and survival rates.
Stressful and traumatic experiences in childhood (Adverse Childhood Events, or ACEs) have been associated with poor health outcomes that extend into adulthood. When stress is sustained or severe in the absence of an adequate buffer, the stress response can become dysregulated--a state referred to as toxic stress. Some professional organizations have advocated for ACEs screening to be part of routine medical care. To date, however, no ACEs screening tool has been validated for use with children. Intervening early at critical points in the life course has the potential to allow a child to avoid the negative consequences of these adverse events. The proposed study has three overarching aims: (1) Examine the relationship between ACEs, stress biomarkers, and symptoms in children and caregivers over time; (2) Validate an ACEs screening in a pediatric health care setting; and (3) Test whether providing primary care-based preventive interventions for children with or at risk for toxic stress can lead to detectable changes in biomarkers, behavior, or health outcomes for children and/or caregivers.
There is now a critical mass of data linking health to telomere length, and blood telomere length is starting to become a commercially available measure, with several companies either offering or planning to offer this measure. With the growing intrigue and interest in telomeres and its commercial measurement, it is becoming increasingly important to understand the psychological and behavioral impact of receiving information about one's own telomere length. Therefore, the primary purpose of this study is to provide results of blood telomere length (from immune cells) to individuals, and to examine the subsequent psychological and lifestyle factors associated with learning one's personal results. Specifically, the investigators will assess if providing both telomere length and educational material on how cell aging is related to health and how it is modifiable, might lead to improvements in salutary health behaviors, and consequently, changes in telomere length. A secondary goal of the study is methodological in nature. Human studies have mainly been limited to immune cells from blood, which requires a blood draw. The relation between blood telomere length and telomere length from other cells that are more easily accessible has not been assessed. Therefore, this study will assess relations between blood telomere length from venous blood draw with telomere lengths from buccal cells, hair follicle cells, and blood cells from a finger prick. This study will assess whether a new measure of telomere damage (TIFS) is related to other measures of cell aging. This study will also assess the reliability of the venous blood draw telomere length across three different assays (PCR, southern blot, and fluorescent in situ hybridization or FISH). To meet these aims, this study will collect samples of these cells from 240 healthy volunteers from the community.
Constitutional mutations of genes involved in telomere repair and maintenance are responsible for "telomeropathy" (" Congenital Dyskeratosis "). Attrition of telomeres promotes cell senescence and genetic instability. The penetrance and severity of organ damage (pulmonary, hematological, liver, and neurological) is variable, depending on the gene involved, the generation concerned (anticipation phenomenon) and also environmental factors. In cases of bone marrow failure, the only curative treatment is hematopoietic stem cell transplant, often limited by pulmonary and / or hepatic involvement or the absence of a suitable HLA match donor. The pulmonary phenotype is most often that of idiopathic pulmonary fibrosis. In severe forms, a lung transplant is proposed in the absence of contraindications. Anti-fibrotic treatments are not very effective or not evaluated. The observed decrease in the vital capacity of these patients is 300 ml / year, abnormally high compared to idiopathic forms. Evolution without transplant is in both situations rapidly unfavorable; the prognosis after lung or marrow transplant is also worse than that of similar transplants without telomeres disease. Danazol has been used for over 4 decades in acquired and constitutional bone marrow failure in the absence of a therapeutic alternative. In telomeropathy, retrospective data on small cohorts indicate a haematological response rate of 60-70%. A prospective study in the United States recently showed a haematological response at 1 year in 78% of cases (10 of 12 evaluable patients) with stabilization of vital capacity. Retrospective data (unpublished) on patients treated in France have shown more side effects and more frequent treatment interruptions and eventually weaker haematological response rate. This study aim to evaluate the benefit of danazol at 12 months on the clinical response.
In our study, we used data from 4,758 healthy adults from the 1999-2002 National Health and Nutrition Examination Surveys to examine the associations between evidence-based diet quality indices and leukocyte telomere length. Our study assessed the four most widely recognized and commonly used diet quality indices in nutritional epidemiology: the USDA-developed Healthy Eating Index-2010, the Alternate Healthy Eating Index-2010, the Mediterranean Diet Score, and the DASH diet score. Analyses were adjusted for sociodemographic and health variables known to influence dietary intake and cellular aging.
Coronary heart disease (CHD) is one of the diseases characterised by biological aging as one of the important risk factors in several epidemiological studies. The mean telomere length and telomerase activity serve as markers for the biological age at the cellular level, with shorter telomeres and lower telomerase activity defining the increased biological age. Telomere length and telomerase activity, therefore, correlates with the risk of CHD and atherosclerosis. A present study states that the treatment with a statin is associated with a reduction in the number of clinical events but only in individuals with increased risk based on their telomere length. This suggests a positive relationship of telomere and telomerase system with the treatment with statins in CHD patients.