View clinical trials related to Microbiota.
Filter by:The use of anesthetics and the processing of the retrieved samples are major confounding factors that influence the results of microbiome research.
It has been suggested that the actual obesity epidemy is related to chronic overconsumption of added or free sugars. The increasing popularity of artificial sweeteners attest the population willingness to reduce added sugars intake and to use alternatives to alleviate health impact of free sugar overconsumption. However, recent findings suggest that artificial sweeteners may rather contribute to obesity epidemy and its associated adverse health effects, potentially via a negative impact on gut microbiota. It has been shown in various studies that, for the same amount of sucrose, unrefined sugars (such as maple syrup) are associated with favorable metabolic effects. The polyphenols contained in maple syrup, especially lignans, could contribute to these positive effects. Indeed, the strong impact of those biomolecules on the modulation of gut microbiota and on gastro-intestinal and metabolic health has been demonstrated in several studies. It is therefore highly relevant to test the hypothesis that the substitution of refined sugar by an equivalent amount of maple syrup (5% of daily energy intake) result in a lesser metabolic deterioration, by the modulation of maple syrup on gut microbiota, than the one observed with refined sugar.
Epidemiological studies link early exposure to persistent organic pollutants (POPs) with health consequences in the newborn. Experimental studies have shown the impact of POPs on the gut microbiota. This project aims to characterize the POPs content in breast milk in an exposed population and to evaluate the impact on breast milk composition and intestinal microbiota establishment in the newborn. The health consequences will be evaluated by the clinical follow-up of the newborn.
Dietary fibers are linked to improved health and prevention of diseases such as obesity, stroke, hypertension, diabetes and colorectal cancer. Moreover, fibers play a crucial role in improving and maintaining gut health, by increasing stool weight,stool frequency and improvement of stool consistency. Currently, very few adults meet the recommendation of 30 (females) or 40 (males) grams per day. Personalized dietary advice may be the solution to increase dietary fiber intake in large populations. The objective is to investigate if a personalized dietary advice is more effective in increasing dietary fiber intake in the Dutch population than the general advice that is currently provided by the Netherlands Nutrition center and the Dutch Digestive Foundation (MLDS).Second objective is to assess the effect of increased fiber intake on stool pattern, perceived well-being and consumer behavior parameters and the role of psychological factors in the effectiveness of personalized dietary advice on dietary fiber intake. Study design: A 4.5-month (6 weeks intervention + follow-up after 3 months) single-blind randomized controlled trial with two groups: the intervention group, which receives personalized dietary advice (PDA), and the control group, which only receives the general dietary advice. Primary study parameters/outcome of the study: Primary endpoint is dietary fiber intake, which will be assessed using an Food Frequency Questionnaire and 24hr recalls. Fecal microbiota composition and metabolite levels will be used as an objective marker for fiber intake. Secondary study parameters/outcome of the study (if applicable): Secondary parameters include stool pattern, well-being, hunger, satiety and body weight. Furthermore, psychological measurements will give insight into why the PDA was (not) effective.
It is of major importance to refine prevention strategies in order to alleviate inflammation, insulin resistance and metabolic syndrome and it appear that improving gut health and microbiota represent a promising strategy. Cranberry-enriched diets may help prevent metabolic syndrome and its associated chronic diseases by a protective effect of gut health and microbiota. It is therefore highly relevant to test the hypothesis that a whole cranberry powder supplements (which include a mixture of polyphenols, free and fiber-associated proanthocyanidins, and fruits fibers) is associated with changes on the gut health and microbiota playing a major role in alleviating inflammation and obesity-associated metabolic disorders.
Several human intervention studies have also been performed that demonstrated beneficial effects of high polyphenol fruits and vegetable on the intestinal microbiome. No information is available about the effect of spice consumption on the gut microbiome. This proposed pilot study will assess the ability of daily consumption of 5 grams of mixed spices to alter the gut microbiome composition compared to placebo in a free-living population.
This was a multi-center, 14-day clinical use study with a 7-day regression period, being conducted to assess the changes in the skin microbiome with two moisturizers in female and male subjects 16-50 years of age with mild to moderate eczema that experienced a recent itch flare up.
Background: Humans live in symbiosis with microbes and their implication for health and disease is evident. The importance of microbiome-gut-brain axis in psychiatric disorders is an area of increasing research interest. OCD is a promising target for microbiome research as Pediatric Acute-onset Neuropsychiatric Syndrome (PANS)/ Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS) are reactions to infectious agents precipitating acute onset of severe OCD symptoms. Furthermore, preliminary evidence has associated probiotic treatment with alleviation of OCD symptoms. We propose the first clinical study on the microbiome and its effects on OCD patients. Aim: To analyze the gut microbiota in patients with OCD compared with healthy matched controls and assess changes in microbial composition following treatment. Outcome measures: Differences in alpha diversity, beta diversity, and taxa abundance of bacterial groups (at the phylum, class, order, family, genus and species levels) and severity of OCD symptoms. Moreover, functional profiling will be conducted. Methods: Our aim is to enroll 32 OCD patients and 32 matched controls. Shotgun metagenomic sequencing will be used. Sequenced data will be processed followed by non-parametric statistical testing. Significance: gut microbiome in patients with OCD beofre and after ERP treatment has never been done before. The microbial composition may impact on OCD symptoms, severity, and chronicity and could inform future therapeutic possibilities.
This is a single-center, double-blind, randomized controlled trial, with parallel groups and reference group. The aim of the study was to investigate whether feed a fermented formula milk leads to an increase of anti-microbial peptides such as catelecidine, alpha and beta defensins and secretory-IgA, compared to feed a standard formula (Plasmon Primigiorni), according to mode of delivery. Breastfed infants were the reference group.
Thyroid cancer (TC), the most common malignancy of the endocrine system, is currently the fifth most common malignancy diagnosed in women (1). The incidence of TC in the United States has increased by an average of 3% per year over the past 4 decades. Much progress has been made in exploring the etiology and pathogenesis of thyroid cancer, while the exact etiology remains unknown, TC is thought to arise from interactions between genetic susceptibility factors, epigenetic effects, and various environmental factors. Besides the improvement of diagnosis, TC increasing incidence emphasize that other important factors such as the environment play an important role in disease pathogenesis. While microbiota as an environment factor to some cancers accept widespread attention, if microbiota also as a risk factor for TC, it is worthy to be considered.