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Evaluating Coaches of Older Adults for Cancer Care and Health Behaviors

ABSTRACT: The overall goal of the COACH study is to conduct a comparative effectiveness trial to assess the effectiveness of trained, participant-designated health coaches versus traditional health education efforts on cancer screening among African American older adults. We hypothesize that members of older adults’ extended families can be trained to be effective coaches who support them through the cancer control spectrum, i.e., prevention, screening, diagnosis and treatment. This research objective is guided by the theoretical model of the PRECEDE-PROCEED conceptual framework that has been widely adopted in health promotion. The target jurisdictions for this study are Baltimore City (BC) and Prince George’s County (PGC), Maryland. The study is anchored in community-based participatory research (CBPR) principles, involving community members in all its phases. The CBPR component is guided by Community Advisory Groups (CAGs) representing key stakeholders in the two jurisdictions. The CAGs are essential in determining the questions included in data collection instruments, mechanisms of recruitment, interpretation of findings, and dissemination of results within the target communities.

DISEASE(S): Uterine Cervical Neoplasms,Cervical Cancer,Colorectal Cancer,Colorectal Neoplasms,Breast Cancer

PROVIDER: 2126493 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Skeletal muscle transcriptome response to a bout of endurance exercise in physically active and sedentary older adults

Project description:Age-related declines in cardiorespiratory fitness and physical function are mitigated by regular endurance exercise in older adults. This may be due, in part, to changes in the transcriptional program of skeletal muscle following repeated bouts of exercise. However, the impact of chronic exercise training on the transcriptional response to an acute bout of endurance exercise has not been clearly determined. Here, we characterized baseline differences in muscle transcriptome and exercise-induced response in older adults who were active/endurance trained or sedentary. RNA-sequencing was performed on vastus lateralis biopsy specimens obtained before, immediately after, and 3 h following a bout of endurance exercise (40 min of cycling at 60%–70% of heart rate reserve). Using a recently developed bioinformatics approach, we found that transcript signatures related to type I myofibers, mitochondria, and endothelial cells were higher in active/endurance-trained adults and were associated with key phenotypic features including V̇o2peak, ATPmax, and muscle fiber proportion. Immune cell signatures were elevated in the sedentary group and linked to visceral and intermuscular adipose tissue mass. Following acute exercise, we observed distinct temporal transcriptional signatures that were largely similar among groups. Enrichment analysis revealed catabolic processes were uniquely enriched in the sedentary group at the 3-h postexercise timepoint. In summary, this study revealed key transcriptional signatures that distinguished active and sedentary adults, which were associated with difference in oxidative capacity and depot-specific adiposity. The acute response signatures were consistent with beneficial effects of endurance exercise to improve muscle health in older adults irrespective of exercise history and adiposity.

2022-03-01 | GSE151066 | GEO

Expression of protocadherin gamma in skeletal muscle tissue is associated with age and muscle weakness

Project description:The skeletal muscle system plays an important role in the independence of older adults. In this study we examine differences in the skeletal muscle transcriptome between healthy young and older subjects and (pre‐)frail older adults. Additionally, we examine the effect of resistance‐type exercise training on the muscle transcriptome in healthy older subjects and (pre‐)frail older adults. Baseline transcriptome profiles were measured in muscle biopsies collected from 53 young, 73 healthy older subjects, and 61 frail older subjects. Follow‐up samples from these frail older subjects (31 samples) and healthy older subjects (41 samples) were collected after 6 months of progressive resistance‐type exercise training. Frail older subjects trained twice per week and the healthy older subjects trained three times per week. At baseline genes related to mitochondrial function and energy metabolism were differentially expressed between older and young subjects, as well as between healthy and frail older subjects. Three hundred seven genes were differentially expressed after training in both groups. Training affected expression levels of genes related to extracellular matrix, glucose metabolism, and vascularization. Expression of genes that were modulated by exercise training was indicative of muscle strength at baseline. Genes that strongly correlated with strength belonged to the protocadherin gamma gene cluster (r = −0.73). Our data suggest significant remaining plasticity of ageing skeletal muscle to adapt to resistance‐type exercise training. Some age‐related changes in skeletal muscle gene expression appear to be partially reversed by prolonged resistance‐type exercise training. The protocadherin gamma gene cluster may be related to muscle denervation and re‐innervation in ageing muscle.

2018-07-24 | GSE117525 | GEO

Differential gene expression in circulating leukocytes from chronically lonely individuals

Project description:Gene expression profiling was carried out on peripheral blood mononuclear cell mRNA samples collected from 93 older adults participating in the Chicago Health Aging and Social Relations Study (CHASRS). The primary research question is whether gene expression differs in participants who are chronically lonely. Keywords: Risk prediction Gene expression profiling was carried out on peripheral blood mononuclear cell mRNA samples collected from 93 older adults participating in the Chicago Health Aging and Social Relations Study (CHASRS). The primary research question is whether gene expression differs in participants who are chronically lonely.

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Subgingival microbiome in Finnish elderly population

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2015-11-15 | GSE68526 | GEO

Neutrophil transcriptome in community acquired pneumonia and age matched controls

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2011-03-16 | GSE25837 | GEO

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| 2148711 | ecrin-mdr-crc

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