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Clinical Trial Summary

There are several studies performed to reveal the linkage between diet, fecal microbiota, and obesity. Human fecal microbiota transplantations in this asset are still scarce. Therefore, this pilot study of FMT from lean to obese people with dietary counseling will increase the knowledge, whether FMT could play a role in the treatment of obesity and NAFLD. Our primary outcome is the changes in glucose metabolism by HOMA-IR.


Clinical Trial Description

The prevalence of obesity is rising. In 2015 39% of adults globally, and in 2017 25% of adults in Finland were obese (BMI ≥30kg/m2). Obesity increases the incidence of type 2 diabetes (T2D) and non-alcoholic fatty liver disease (NAFLD). Obesity associates with decreased gut bacterial diversity, and low microbial gene richness. The diversity of fecal microbiota composition has been shown to alter in human NAFLD. Fecal microbiota transplantation (FMT) from lean vegan donors to those with NAFLD changed fecal microbiota composition and associated with beneficial changes in plasma metabolites in a pilot randomized controlled trial. Radiological liver imagining for NAFLD is usually performed by ultrasound. Liver elastography evaluates liver stiffness and fibrosis stage. Liver steatosis and fibrosis are known to decrease along weight loss. To our knowledge, only one small study has yet combined FMT and liver imagining in a concept of NAFLD. Diet influences the gut microbiota. In obesity, the composition of fecal microbiota is altered. Alterations in plasma metabolites derived from gut microbiota and diet have been linked to NAFLD development. The composition of gut microbiome predicts the metabolic response to different dietary interventions in obese individuals. The key food items of the Healthy Nordic Diet are vegetables, fruit, berries, whole grain products, fish, and rapeseed oil. Abdominal obesity was less abundant in those consuming the Healthy Nordic Diet. Dietary fiber has been associated with metabolically beneficial changes in fecal microbiome. High fat diet has been associated with worsening of fecal microbial composition. At this moment, the only clinically approved treatment of fecal transplantation (FMT) is recurrent Clostridioides difficile infection. FMT has been studied in asset of obesity and metabolic syndrome in rats, mice and humans. Fecal transplantation from lean donors has been shown to improve insulin sensitivity in obese subjects. Bariatric surgery has been shown to increase fecal microbiota diversity. Giving FMT from bariatric surgery undergone mice or humans lead to weight reduction in the receiver mice. There are studies that have shown no change in glucose metabolism after FMT from lean donor, but also studies with favorable effect on the recipient´s insulin sensitivity and energy expenditure. The investigators will conduct the randomized controlled one year lasting intervention of dietary advice, where 2:1 participants will be given FMT from lean donor or placebo via gastroscopy to the duodenum. The aim is to investigate the effect of FMT from healthy lean individuals in obese participants receiving dietary counseling. This study is national multicenter pilot study, where we aim to recruite 54 participants in three different study centers in Kuopio, Lahti and Helsinki. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05607745
Study type Interventional
Source University of Eastern Finland
Contact
Status Active, not recruiting
Phase N/A
Start date October 30, 2022
Completion date December 2026

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