Active clinical trials for "Sarcopenia"

With the rapid growth of the global elderly population, the studies of the biomarkers of the sarcopenia and aging are under investigation in different ways. The investigators use Metabolomics to explore the biomarkers of the sarcopenia and aging of the senior adults.

Frailty is a syndrome in which the accumulation of small, individually insignificant deficits leads to heightened vulnerability to adverse events and predisposes to potential catastrophic decompensation. Objective of this study is to clarify the underlying genetic and immunological mechanisms responsible of frailty condition focused on: i. nephrosclerosis ageing kidney phenotype related to salt effects on immunosystem, ii. immunological aspect of sarcopenia, iii. psychological disorder related to immunosystem activation, iv. detection of new biomarkers of frailty.

Frailty is a multideterminant syndrome in which muscle function appears to play a central role. Muscle function depends on brain control, nutrition and perfusion. We hypothesized that multiparametric MRI assessment combined with comprehensive gerontological assessment (CGA) and routine biological assessment of inflammation in a sample of older people with and without diabetes will allow to explore on one side the possibilities of multi-parametric MRI muscle and brain imaging to describe the correlates of frailty and on the other side will describe the different muscle/brain alterations due to diabetes in frailty. The main objective is to compare the lipid percent of the rectus femoris in frail and pre-frail older subjects and in non-frail older subjects.

This pilot study will aid the development of a sonographic screening method used to obtain proxy measures of LBM and estimates of muscle composition that relate to Intramuscular adipose tissue (IMAT), lipid metabolism, and insulin resistance. Typically, age-related muscle loss is not assessed in older adults until they began to show signs of trouble managing their own lives independently. In addition to the loss of independence that is typically seen with diminished muscle mass and function (sarcopenia), age-related changes in lean body mass can have negative effects on insulin sensitivity. The investigators central hypothesis is that the muscle characteristics derived from ultrasound (US) will be significantly associated with estimates of dual energy X-ray absorptiometry (DXA) LBM, CT scan measures of IMAT, estimates of insulin homeostasis, and serum levels of inflammatory cytokines.

Deficits in skeletal muscle function exist during aging and muscular dystrophy, and suboptimal function has been related to factors such as atrophy, excessive inflammation and fibrosis. Sarcopenia is the age-related loss of skeletal muscle mass and function. It is now recognised as a major clinical problem for older people and research in the area is expanding exponentially. This interest stems from the fact that sarcopenia is both common and associated with serious health consequences in terms of frailty, disability, morbidity and mortality. The age-related loss of human skeletal muscle mass is due to a decrease in myofibre size and number with the loss of both fast and slow type myofibres, although the loss of fast myofibres tends to start earlier, at ∼70 years. Many factors influence the decrease in muscle mass. A significant contributor is an anabolic resistance of older skeletal muscle to protein nutrition as seen during immobilisation which can be ameliorated at least in part by resistance exercise and dietary supplementation. Other intensive areas of research are related to the loss of innervation and oxidative damage. Moreover, ineffective muscle regeneration underlies each condition and has been attributed to a deficit in myogenic potential of resident stem cells or satellite cells. It is now widely accepted that satellite cells, and generally adult stem cells, are normally quiescent and tend to reside in hypoxic areas of the tissue to preserve their undifferentiated state. To govern these processes, cells have developed a very complex machinery that is mainly regulated by a group of transcription factors known as hypoxia-inducible factors (HIFs). In particular, several observations support the idea that oxygen deprivation and HIF-1a may play a key role during ischemia to activate the regeneration process, which, after an initial hypoxic insult, needs to proceed under normoxia. On these bases, in this study we will investigate the role of HIF-1a in skeletal atrophy during aging.

Currently there is no standard way to detect age-related skeletal muscle loss in patients with chronic kidney disease. Investigators are working on finding rapid and inexpensive ways to measure muscle size and fat within the muscle.

The primary aim of this study is to assess if the mobility dose that patients receive in the surgical intensive care unit (SICU) predicts adverse discharge disposition (primary endpoint), and muscle wasting diagnosed by bedside ultrasound (secondary endpoint).

A common condition associated with ageing is sarcopenia, which is a progressive decrease in muscle mass. Sarcopenia is associated with adverse outcomes including increased mortality, and places a major burden on healthcare spending, with the annual cost of sarcopenia in the United States exceeding that of osteoporosis and hip fracture. In the UK, the prevalence of sarcopenia in community-dwelling older people has been estimated at 5% for men and 8% for women. Current guidelines for sarcopenia diagnosis require muscle mass to be measured using costly devices such as Dual Energy X-ray Absorptiometry (DXA) and Magnetic Resonance Imaging (MRI). Previous research has found strong relationships between the sit-to-stand (STS) test and both muscle mass and muscle strength. This pilot study aims to examine this relationship in community-dwelling older people to develop predictive equations for initial screening of sarcopenia. Forty subjects will be tested using the diagnostic criteria developed by the European Working Group on Sarcopenia in Older People (EWGSOP). Muscle mass will be measured using the DXA and diagnostic ultrasound. Muscle strength will be measured using isokinetic dynamometer, handgrip dynamometry, and hand-held dynamometry. Functional performance will be measured using the Timed-up-and-Go and gait velocity, and the STS. Subjects will perform two variants of the STS; the five times STS (5STS), which requires subjects to perform five consecutive STS movements as quick as possible, and the 30-second STS (30STS), which requires subjects to perform as many STS movements as possible in 30 seconds. All testing will be completed in a single session lasting 90 minutes for each subject. Testing will be performed at the University of Bedfordshire Polhill Campus. Subject recruitment will be recruited using advertisement posters and word of mouth.

Colorectal cancer (CRC), second leading cause of cancer worldwide, is associated with a poor prognosis, especially in patients with advanced disease. Therefore, there is still a need to develop new prognostic tools to replace or supplement those routinely used, with the aim to optimize treatment strategies. Studies on gut microbiota composition provide new strategies to identify powerful biomarkers. Indeed, beyond its beneficial functions for the host, increasing evidences suggest that gut microbiota is a key factor involved in CRC carcinogenesis. Many clinical studies have described an imbalance in the gut microbiota (dysbiosis) in CRC patients, with the emergence of pathogenic bacterial species, Recent studies reported that pks-positive E. coli, a pathogenic bacterial producing toxin encoded by the pks genomic island, is more frequently detected in CRC patients, suggesting a possible role in tumor development. Therefore, this suggests the potential use of microbial signatures associated with CRC for prognostic assessment. Furthermore, influence of body composition profile (BMI, sarcopenia, metabolic syndrome) also appears to be a new relevant prognostic tool regarding surgical and oncological outcomes following CRC surgery. The aim of this translational research project is to study the impact of these new prognostic tools on surgical and oncologic results in a prospective cohort of patients who underwent CRC surgery at the Digestive Surgery Department of the University Hospital of Clermont-Ferrand (France). This could allow to optimize treatment strategies and provide new ways to identify news promising biomarkers associations in order to better define high risk patients. Investigators aim to identify specific microbial signatures associated with some metabolic profiles in order to improve surgical morbidity and/or response to cancer therapies.

This study evaluate the association of body composition (mainly free-fat mass), clinical and biochemical parameters with development of toxicity in patients under treatment with Carboplatin/Paclitaxel in advanced NSCLC.