View clinical trials related to Microbiota.
Filter by:Background (brief): Burden: A total of 52 million children under 5 are suffering from acute malnutrition globally, of whom 33 million have moderate acute malnutrition (MAM). In Bangladesh, more than 2 million children suffer from MAM. According to Bangladesh Demographic Health Survey 2014 26%, 25% and 17% of children aged less than two years are stunted, underweight and wasted respectively. Knowledge gap: It has been already demonstrated that children with SAM have immature gut microbiota that is partially corrected with treatment. Children with MAM have an increased risk of mortality, infections and impaired physical and cognitive development compared to well-nourished children. Although the global caseload of MAM is much greater than that of SAM, the condition has not received the same level of attention or priority. Through our previous and ongoing research we now know about the members of the gut microbiota that can promote growth in children and also about certain food ingredients that promote the proliferation of such beneficial microbiota. However, this knowledge needs to be applied on a sufficiently powered community-based clinical trial. Relevance: The rationale for this study is to assess whether long-term administration of complementary food made of locally available food ingredients can stimulate the proliferation of growth promoting members of the gut microbiota and have a positive impact on child growth. Such a food (the microbiota directed complementary food; MDCF-2) has been identified through our recently concluded Pre-proof of concept trial done on children with primary MAM. We would now like to do a clinical community-based trial of this potential MDCF-2 in the management of children with primary MAM. Hypothesis: Complementary foods made of locally available food ingredients that stimulate the proliferation of growth promoting gut microbiota (MDCF-2) will improve clinical outcomes. Methods: We will conduct a proof of concept (POC) clinical trial in 12-18 months old children with primary MAM (Weight-for-Length Z-score, WLZ between -2 and -3). This study will be conducted at Bauniabadh, Radda MCH-FP (Maternal and Child Health- Family Planning) clinic, Gabtoli of Mirpur area and possibly at the Special Nutrition Unit run by Terre des Hommes in Kurigram. We will produce MDCF-2 at the icddr,b Food Processing Laboratory or nutrition centre established at the site in sufficient quantities for clinical study. This formulation will be matched in energy density and micronutrient content of ready-to-use supplementary foods (RUSFs) used for MAM in Bangladesh and other countries, and will meet all other requirements for a complementary/supplementary food for 12-18 months old children with MAM. We will test MDCF-2 and the current RUSF standard of care for primary MAM to see the effect on growth, proteomics and metabolomics of an intervention for 12 weeks, with a 4-week post-intervention phase. Hypothesis to be tested: In a hypothesis testing research proposal, briefly mention the hypothesis to be tested and provide the scientific basis of the hypothesis, critically examining the observations leading to the formulation of the hypothesis. Complementary foods made of locally available food ingredients that stimulate the proliferation of growth promoting gut microbiota (MDCF) will provide a new way to improve clinical outcomes, for example by improving growth of children with MAM. Specific Objectives: To investigate the efficacy of complementary food made of locally available food ingredients that can stimulate the proliferation of growth promoting gut microbiota (Microbiota-Directed Complementary Food; MDCF-2) in (i) promoting repair of microbiota immaturity (ii) promoting proliferation of beneficial bacteria (iii) improving both ponderal and linear growth in children (iv) improving the metabolomic profile with MAM
Background (brief): 1. Burden: A total of 52 million children under 5 are suffering from acute malnutrition globally, of whom 33 million suffer from moderate acute malnutrition (MAM). In Bangladesh, around 2 million children suffer from MAM. In absolute numbers, according to Bangladesh Demographic Health Survey 2014, 26%, 25% and 17% of children aged less than two years are stunted, underweight and wasted respectively.1 2. Knowledge gap: We have already demonstrated that children with acute malnutrition have immature gut microbiota that is partially corrected with treatment. Children with MAM have an increased risk of mortality, infections and impaired physical and cognitive development compared to well-nourished children. Although the global caseload of MAM is much greater than that of SAM, the condition has not received the same level of attention or priority. Through our previous and ongoing research we now know about the members of the gut microbiota that can promote growth in children and also about certain food ingredients that promote the proliferation of such beneficial microbiota. However, this knowledge needs to be applied on a large scale community-based clinical trial. 3. Relevance: The rationale for this study is to assess whether long-term administration of complementary food made of locally available food ingredients that can stimulate the proliferation of growth promoting gut microbiota (MDCF-2), as identified in our Pre-POC trial, is able to produce predictable changes in the microbiota of Bangladeshi children with Post-SAM MAM as well as in their nutritional status. We would now like to do a community-based clinical trial of this potential MDCF-2 in the management of children with Post-SAM MAM. Hypothesis (if any): Complementary foods made of locally available food ingredients that stimulate the proliferation of growth promoting gut microbiota (MDCF-2) will improve clinical outcomes. Objectives: To investigate the efficacy of complementary food made of locally available food ingredients that can stimulate the proliferation of growth promoting gut microbiota (Microbiota Directed Complementary Food: MDCF-2) in (i) promoting repair of microbiota immaturity (ii) promoting proliferation of beneficial bacteria (iii) improving both linear and ponderal growth in children with Post-SAM MAM (iv) improving the metabolomic profile of children with Post-SAM MAM Methods: We will conduct a proof of concept (POC) clinical trial in 12-18 months old children with post-SAM MAM (Weight-for-Length Z-score, WLZ <-2 to -3) over the course of approximately two years. This study will be undertaken at Mirpur area of Dhaka city and in Kurigram. We will produce MDCF-2 at the icddr,b Food Processing Laboratory in sufficient quantities for the trial. This formulation is matched for energy density and micronutrient content of ready to use supplementary food (RUSF) used for MAM. It itself is not a ready-to-use food but is rather a cooked food made of locally available food ingredients (chickpea, green banana, peanut, soybean flour) which have been found to enhance growth promoting members of the gut microbiota in children. We will test MDCF-2 and the current RUSF standard of care for Post SAM MAM to see the effect on growth, proteomics and metabolomics of an intervention for 12 weeks, with a 4-week post-intervention phase. Outcome measures/variables: - Ponderal growth (rate of weight gain as the primary outcome variable), measured at different time points by anthropometry - Linear growth, measured at different time points by anthropometry - Proteomic profile, assayed by DNA aptamer based SOMAlogic scan - Morbidity, assessed by daily records - Change in microbiota-for-age Z score Hypothesis to be tested: Complementary food made of locally available food ingredients that can stimulate the proliferation of growth promoting gut microbiota (MDCF-2) will improve nutritional outcomes. Specific Objectives To investigate the efficacy of complementary food made of locally available food ingredients that can stimulate the proliferation of growth promoting gut microbiota (Microbiota Directed Complementary Food: MDCF-2) in (i) promoting repair of microbiota immaturity (ii) promoting proliferation of beneficial bacteria (iii) improving both linear and ponderal growth in children with Post-SAM MAM (iv) improving the metabolomic profile of children with Post-SAM MAM
This research project aims to provide the scientific findings about the beneficial effects of okara (soybean pulp) consumption on gut and glycaemic health in middle-aged and older individuals in Singapore. In addition, it aims to examine the health promoting impact of bio-transformed okara in this population. We hypothesise that consuming a habitual diet with an okara (untreated or bio-transformed) incorporated food product will improve the gut microbiome composition and will increase the production of short chain fatty acids when compared to a same diet with no okara. Okara-based food product can also improve the glycaemic response in individuals compared to a product without okara in meal tolerance test (acute).
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.
A prospective, multicenter, observational cohort study including about 550 mother-infant pairs in Beijing will be conducted to evaluate the association between mothers' gestational weight gain and the gut microbiota of them and their infants.
Microbiota is known to effect metabolism. This is pilot study to get status of microbiota from normal control. It will be compared to data from specific patients in ICU via further study.
Microbiota is known to effect metabolism. This is pilot study to get status of microbiota from normal control. It will be compared to data from specific patients in ICU via further study.
Background. The main risk factor for the development of hepatocellular carcinoma (HCC) is cirrhosis of any etiology, with an annual risk between 1 and 6%, being currently the leading cause of death in patients with cirrhosis and the third cause of death for cancer in the world. In our country there is little information about the incidence of HCC in this population. It has been shown that there is a change in the gut microbiome (set of genetic material of microorganisms that make up the intestinal bacterial flora) as the severity of the cirrhosis progresses. This change in the microbiome has been associated with clinical decompensation events of cirrhosis. However, there are no previous studies in the world that demonstrate an impact of the change of the microbiome in cirrhosis as a precursor to the development of HCC. Our team has compared the profile of the microbiome in patients with cirrhosis with and without HCC. We observed that patients with HCC present changes in the phylum Firmicutes, genus Fusobacterium and change in the bacteroides / prevotella ratio. This pattern was associated with a pro-inflammatory profile. In murine models, it has been postulated that modulation of the gut microbiome through the use of probiotics could have a clinical role in the prevention of HCC development. This research project aims to answer the following question: in patients with cirrhosis, does the nutritional supplement with probiotics prevent HCC development? Objective: To compare the incidence of HCC through intervention with probiotics in cirrhosis. Methods: A randomized, double-blind, placebo controlled trial of probiotics in patients with Child Pugh A-B cirrhosis at 3-year follow-up. Likewise, the type of microbiome found as a predictor of the risk of HCC development will be evaluated. It will include 280 patients, 140 in each branch. Basal blood and stool samples will be obtained and every 6 months. The typing and quantification of the microbiome in samples of fecal matter will be carried out by amplifying a specific region (V3-V4) of the bacterial 16s rRNA gene. Likewise, the presence of endotoxins (LPS) and cytokines (IL6, TNF alpha) in plasma will be determined to analyze the immune environment and the expression of the TLR4 receptor in mononuclear cells.
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.
Colorectal cancer (CRC), second leading cause of cancer worldwide, is associated with a poor prognosis, especially in patients with advanced disease. Therefore, there is still a need to develop new prognostic tools to replace or supplement those routinely used, with the aim to optimize treatment strategies. Studies on gut microbiota composition provide new strategies to identify powerful biomarkers. Indeed, beyond its beneficial functions for the host, increasing evidences suggest that gut microbiota is a key factor involved in CRC carcinogenesis. Many clinical studies have described an imbalance in the gut microbiota (dysbiosis) in CRC patients, with the emergence of pathogenic bacterial species, Recent studies reported that pks-positive E. coli, a pathogenic bacterial producing toxin encoded by the pks genomic island, is more frequently detected in CRC patients, suggesting a possible role in tumor development. Therefore, this suggests the potential use of microbial signatures associated with CRC for prognostic assessment. Furthermore, influence of body composition profile (BMI, sarcopenia, metabolic syndrome) also appears to be a new relevant prognostic tool regarding surgical and oncological outcomes following CRC surgery. The aim of this translational research project is to study the impact of these new prognostic tools on surgical and oncologic results in a prospective cohort of patients who underwent CRC surgery at the Digestive Surgery Department of the University Hospital of Clermont-Ferrand (France). This could allow to optimize treatment strategies and provide new ways to identify news promising biomarkers associations in order to better define high risk patients. Investigators aim to identify specific microbial signatures associated with some metabolic profiles in order to improve surgical morbidity and/or response to cancer therapies.