Metabolism Changes

The goal of this study is to understand if there are differences in the fat, muscle and metabolism of individuals who developed obesity during childhood versus those who developed obesity in adulthood. We will do this by having recruited participants undergo subcutaneous adipose tissue biopsies in the abdomen and thigh, a muscle biopsy in the thigh, collect blood and urine samples, a DEXA scan and 3 submaximal exercise tests. participants will also have their resting energy expenditure measured through indirect calorimetry to tailor a targeted weight loss protocol through caloric restriction and cardiovascular exercise (3 times a week). After 10% of weight loss is completed, study participants will repeat all tests during a 2 week weight stabilization period. At 12 weeks into the intervention, indirect calorimetry, DEXA scan and blood tests will be repeated.

Assess the acute effects of high-temperature exposure (including both daytime and nighttime conditions) on multiple physiological and psychological indicators, including cardiovascular, respiratory, neuropsychiatric, and metabolic functions, along with their potential mechanisms.

Sleep is an important factor for overall health. This study will see how different light exposure patterns and food intake impact a person's metabolism (how the body breaks down food) when sleeping is reduced. Participants will attend 6 to 8 in-person visits to the study clinic, including three overnight stays. People will complete surveys and medical tests. The study will last about 4 to 6 months.

A large ongoing randomized, open-label trial aimed at evaluating the effects of two different dietary interventions, FMD and LD, on body composition and cardiovascular (CV) biomarkers in a real word population (NCT05698654) is actually ongoing. This trial started in January 2024 will enrol 501 adult subjects between the ages of 30 and 65: 167 subjects randomized to the FMD arm with a 5-day meal program once every three months for a 6-month period (arm 1); 167 subjects randomized to follow the FMD plus a Longevity Diet program (FMD+LD) for a 6-month period (arm 2); 167 randomized to the control group (arm 3) that will continue their usual diet. On 2024,410, participants were enrolled and randomly assigned to FMD, FMD + LD, or control arm. Although preliminary data demonstrated the beneficial effects of such nutritional plans on body weight, BMI, body composition, and cardiovascular (CV) biomarkers, limited data is available on the long-term effects of these powerful nutritional interventions.

This is a prospective, monocentric, randomized controlled trial to investigate the effect of anti-hypertensive treatment and/or individualized exercise training intervention on blood pressure and vascular health. Furthermore the investigators want to decipher mechanisms, which contribute to vascular health by analyzing changes in metabolism and cell function in relation to vascular reaction.

Stimulation of O-GlcNAcylation has been shown to be beneficial in several acute pathologies and different animal models, such as haemorrhagic and septic shock, and ischaemia-reperfusion (cerebral and cardiac). It could therefore be interesting to use this approach in children in order to limit the impact of various pathologies inducing SIRS, such as extracorporeal circulation for major surgery, septic shock or various traumas. The investigators demonstrated in 2 different animal models (endotoxemia by injection of Lipopolysaccharides and caecal puncture ligation model) with 3 different pharmacological molecules (Glucosamine, ThiametG and NButGT) that stimulation of O-GlcNAcylation was beneficial in the early phase of septic shock with a marked effect on cardiac function and survival. The investigators thus demonstrated that stimulation of O-GlcNAcylation was beneficial in young rats in septic shock. However, none of this work has yet been reproduced in humans, either children or adults.