Active clinical trials for "Anorexia Nervosa"

Etude d'épidémiologie clinique multicentrique (IMM), naturalistique, comparant un échantillon clinique à un échantillon de témoins issus de la population générale. Cette recherche se fixe pour objectif principal de déterminer, sur un large échantillon de patients pris en charge pour anorexie mentale dans des unités de soins spécialisées, les caractéristiques de l'activité physique et la dépendance à l'exercice physique en comparaison avec des sujets issus de la population générale appariés pour l'âge et le sexe. Nous faisons l'hypothèse que les patients anorexiques mentaux sont plus actifs et plus dépendants à l'exercice physique que des sujets de la population générale de même âge et de même sexe.

Body Image distortion is a key diagnostic feature for Anorexia Nervosa. Patients suffering from Anorexia Nervosa tend to perceive themselves as fatter than they are. This bias might be at the origin of a reinforcement of anorectic behavior which might alter medical care. The objective of this study is to identify neural correlates of self-recognition in Anorexia Nervosa. Patients are hypothesized to activate the self-recognition network when seeing images of a fatter body shape than their own.

This study will use functional magnetic resonance imaging to compare appetite-related brain activity in women with anorexia nervosa before and after receiving treatment for the disorder.

The purpose of this study is to explore the experience of adolescents suffering from anorexia nervosa confronted with the prescription of antidepressants

The study aims to better understand the functioning of the heart of children and adolescents with anorexia nervosa or obesity, compared to the heart function of control subject. This project seeks to find out if a weight disorder affects the heart and whether a systematic cardiac assessment with appropriate management is then to be considered. To meet this objective, several analyzes are planned including a speckle tracking echocardiography, allowing a non-invasive study of myocardial deformations. The hypothesis is that two opposite weight disorders (anorexia nervosa and obesity) lead to similar complications: inflammation, fibrosis altering the myocardial structure and therefore its contractility. Both systolic and diastolic dysfunction appear. Investigator hypothesize that the determinants of this dysfunction involve part of the alteration of body mass, and partly qualitative alterations specific to each pathology.

By use of several questionaires, this study aimed at an investigation of the changes in motivation, symptoms, self-esteem and coping style in adolescent patients with anorexia nervosa.. The psychometric properties of the Anorexia Nervosa Stages of Change Questionnaire (ANSOCQ) and its relation to coping style and self-esteem were assessed. After a treatment period of nine months, clinical AN diagnosis and the body mass index (BMI) were re-assessed. Besides construct validity of the ANSOCQ, its predictive validity in terms of predicting the outcome of AN was assessed.

The objective of this study is to identify the patterns of brain activity in reward circuitry that promote symptoms of anorexia nervosa. This project will compare weight-restored individuals with anorexia nervosa to a non-eating disorder control group on reward brain circuitry patterns in response to typically rewarding cues (i.e., entertaining videos) and disorder-specific restrictive eating cues (i.e., low-fat food choice) using fMRI. In addition, this study will examine which neurobiological reward responses among weight-restored individuals with anorexia nervosa predict objective restrictive eating (measured by laboratory meal intake) and longitudinal risk of relapse one year later.

Individuals with anorexia nervosa (AN) have long been observed to demonstrate symptoms in common with obsessive-compulsive disorder (OCD), in particular, an obsessive fear of normal weight leading to dangerous food restriction, as well as many compulsive rituals about food. Both AN and OCD are seriously handicapping and often resistant to conventional therapies. Given that the two conditions often co-occur and are associated with still unknown genetic risk factors, the aim of this project is to identify their shared and distinct patterns of brain activity. The investigators propose to use functional magnetic resonance imaging to compare brain response among adolescents with AN, OCD, and age-matched healthy individuals. Specifically, this study will investigate function of distinct brain circuits related to core aspects of these related disorders. The investigators use three tasks related to set shifting, global vs. local processing, and reward. Based on evidence of deficits in cognitive flexibility and ability to change behavior, the investigators hypothesize that adolescents with AN and with OCD will show hypoactivity of frontostriatal circuitry during cognitive tasks, and adolescents with AN will show hyperactivity in limbic regions in a reward task. This study is the first to directly compare brain activation patterns using functional neuroimaging in AN and OCD. The goal is to determine how abnormal brain activity relates to symptom formation, what accounts for shared characteristics amongst these disorders, and whether deficits in specific circuitry underlie their unique defining features. The study of shared and unique elements of functional brain circuitry reflects a new, emerging approach to the classification of psychiatric illness, one based on identifying unique combinations of biological risk factors that link related conditions. This approach is widely believed to be a critical step forward in developing more brain-relevant targeted strategies for preventative interventions.

The Anorexia Nervosa Genetics Initiative (ANGI) is the largest and most rigorous genetic investigation of eating disorders ever conducted. Researchers in the United States, Sweden, Australia, and Denmark will collect clinical information and blood samples from over 13,000 individuals with anorexia nervosa and individuals without an eating disorder. ANGI represents a global effort to detect genetic variation that contributes to this potentially life-threatening illness. The goal of the research study is to transform knowledge about the causes of eating disorders to work toward greater understanding and ultimately a cure. If you have suffered from anorexia nervosa at any point in your life, you can help us achieve this goal. Your contribution would include a brief questionnaire and a blood sample. If you have never had anorexia nervosa, but still want to contribute, we invite your participation as well.

This study aims to investigate neuroendocrine, autonomic functioning, and energy metabolism in patients with eating disorder and their relationships with psychopathology of eating disorders (eating patterns, depression, and personality) in these patients.