Effects of Fecal Microbiota Transplantation

Condition(s) studied

Investigational drug(s) / intervention(s)

Patients: A clinical examination (weight, height, Body Mass Index calculation) and ED screening using the SCOFF questionnaire will then be carried out, allowing the patients eligibility criteria to be verified. If the patient is included, the self-questionnaire will be completed on site and stool collection will be carried out.

healthy volunteer: A clinical examination (weight, height, Body Mass Index calculation) and ED screening using the SCOFF questionnaire will then be carried out, allowing the volunteer's eligibility criteria to be verified. If the volunteer is included, the self-questionnaire will be completed on site and stool collection will be carried out.

Study summary

The intestinal microbiota plays an essential role in digestion and, through the gut-brain axis, in the regulation of weight gain and eating behavior. The balaEating disorders (EDs) are serious pathologies affecting adolescence and young adults, likely to become chronic, with long-term morbidity and mortality impacts. These pathologies represent a very important public health issue. EDs are defined by the DSM-V classification criteria and include different forms: anorexia nervosa, bulimia nervosa, hyperphagia, and atypical or unspecified forms. The global prevalence of these diseases reaches 8.4% in women and 2.2% in men. These eating disorders lead to numerous psychiatric and somatic complications and have a significant impact on the quality of life and mortality of patients (particularly in anorexic patients). The molecular mechanisms underlying eating disorders are still poorly understood. The etiological origin of these diseases is complex and involves various biological, psychological, and sociocultural factors. The intestinal microbiota, which corresponds to the community of microorganisms living inside the intestine, could be one of these factors. Indeed, the microorganisms of the microbiota interact very closely with intestinal cells but also with distant organs, such as the brain, via nerve communications or the bloodstream. nce and dialogue between the intestinal microbiota and human cells can be altered following changes in the environment, diet, or stress. These disturbances, found among others in patients suffering from eating disorders, can lead to a lasting change in the composition or metabolic activity of the microbiota (dysbiosis), which can have profound repercussions on human physiology. Several clinical studies conducted on patients with anorexia have highlighted the existence of intestinal dysbiosis in these individuals. As with anorexia, the potential role of intestinal dysbiosis in bulimic and binge eating patients remains currently unknown. This dysbiosis could have a harmful effect on intestinal physiology and promote the onset of functional digestive disorders, which are frequently found in patients suffering from eating disorders. This dysbiosis could also lead to a disruption of communication along the gut-brain axis and contribute to the eating disorders observed in these patients.

Eligibility

Primary outcome measure(s)

• Body weight assessment of mice receiving fecal microbiota from patients suffering from eating disorders — Day 1
  After collecting stool samples from the patient with eating disorders (ED) or the healthy volunteer, a suspension will be created from the stool samples of the patients or healthy volunteers. This suspension will be transplanted by oral gavage into C57Bl/6 mice whose endogenous microbiota will have been previously eliminated by the administration of antibiotics. Over time, the body weight of the transplanted animals will be evaluated. The main objective of this study is to evaluate the evolution of body weight in mice that received a fecal microbiota transplant from patients with eating disorders and to compare it with that of mice that received a microbiota transplant from healthy volunteers.

Trial sites (1)

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