Active clinical trials for "Obesity"

The purpose of the study is to determine whether the presentation of various foods produces an increase or decrease in responses on a motivational computer task. In addition, the study determines if energy intake or motivation to obtain food is related to the dopamine receptor genotype.

The investigators want to assess differences in lung function and bronchial inflammation of young smokers and non-smokers with (BMI > 30) and without obesity (BMI < 25)(4 patient groups). The aim of the study is to compare differences in lung function (VC, FEV1, VC/FEV1, metacholine challenge) and bronchial inflammation in relation with smoking history and levels of exhaled CO. For the latter the investigators will analyze the levels of IL-8, IL-6, TNF alpha and INF gamma and mRNA of LBP, TLR2 and TLR4 in sputum. Further, inflammatory markers e.g. low CRP and inflammatory cytokines levels in the blood will be investigated. The aim is to describe a early stage of chronic obstructive pulmonary disease caused by cigarette smoke in juvenile smokers, and the relationship between bronchial inflammation and obesity in adolescents.

This retrospective chart review and data abstraction will evaluate and quantify the effectiveness of a comprehensive weight management program. The hypothesis is that the program will positively affect weight, weight-related comorbidities and medication use.

The reports on relationship of obesity and biochemical or clinical recurrence of prostate cancer are controversial. Several reports have shown that obesity is associated with increased risk of biochemical or clinical failure after radical prostatectomy. Other prospective studies have shown no adverse effect of obesity on long-term outcomes after prostatectomy. Limited reports are available on the impact of obesity on prostate cancer progression after radiotherapy. Primary: to assess percentage recurrence rate among normal weight and overweight or obese prostate cancer patients treated by adjuvant Zoladex therapy. Secondary: to determine the Quality of Life differences among normal and overweight or obese prostate cancer patients by a Quality of Life questionnaire

This project will study the effects of surgery for obesity on bone metabolism and hormones that regulate appetite.

The main aim of this study is to analyze and report the intermediate term outcomes after laparoscopic revision Roux-en-Y gastric bypass (RYGB) surgery for failed and/or complicated Vertical Banded Gastroplasty (VBG). The foremost outcome measurements are 1) Fat loss mainly measured as weight loss and expressed as trends in BMI, %EWL, and/or %EBL. 2) Trend in Comorbidity status. 3) Subjective Satisfaction and Health-Related Quality of Life "HR-QoL" are measured by a standardized, non-validated satisfaction questionnaire and by a validated, disease-specific worldwide used HR-QoL questionnaire. 4) Morbidity & Mortality include nutritional status and metabolic complications. Consequently, secondary objectives of this study are the following. 1) To assess failure rate defined as percentage of excess weight loss < 50%, lowest BMI >35 for morbidly obese (MO) or >40 for superobese (SO), and/or lack of resolution/improvement of major comorbidities at the point in time when assessed at each postoperative year after the surgery under study. 2) To evaluate the metabolic and nutritional status by measurements of particular clinical and biochemical parameters.

Wight loss surgery provides good glycemic control in type 2 diabetes. The technique of "Roux-en-Y gastric bypass" is more effective than the "Adjustable Gastric Band" on weight loss. This longitudinal cohort study will compare the effectiveness of the Roux-en-Y gastric bypass and Adjustable Gastric Banding on glycemic control in type 2 diabetes and explore the responsible mechanisms. The evaluation will be made preoperatively and 1 year later as assessed by the decline in HbA1c. An evaluation will also be carried out after a weight loss of 10% to indicate whether the observed difference is independent of weight loss.

The aim of this study is to understand the metabolic changes occurring in fat tissue both during controlled weight loss that lead to the improvement of type 2 diabetes and other obesity associated metabolic disorders. The novelty of the study is the analysis of preadipocytes, a poorly characterized subfraction of the adipose tissue, which provides adipocyte precursors and thereby strongly influences adipose tissue mass changes. Knowledge of pathways involved in controlling adipose tissue composition will help to design novel intervention strategies for the treatment of obesity associated metabolic disorders such as type 2 diabetes.

Asthma is more frequent in obese women, but the mechanisms underlying the causes of this increased frequency are unknown and are different from usual asthma pathophysiology (associated with allergy). Obesity is known to influence ventilation; our hypothesis is that the normal variability of ventilation is decreased in obese patients, and that this decrease is responsible for an increased reactivity of their airway to non specific stimuli. In this observational study, breathing variability will be studied using polygraphy (an investigation that is made in these women to detect nocturnal apneas), and airway reactivity is studied between pulmonary function tests that are made before bariatric surgery.

The primary objective of LABS-2 is to use standardized techniques and measures to assess the longer-term safety and efficacy of bariatric surgery by: comparing post-surgical outcomes to pre-operative status examining risks and benefits of surgery. LABS-2 will determine the associations between clinical/demographic patient characteristics, components of the surgical procedure, and peri-operative and post-operative care with post-operative risks and changes in patient status. Funds are not available to pay for the surgery for patients, only to address research questions.