View clinical trials related to Oral Microbiota.
Filter by:In Western countries, one of the major nutritional challenges requires reducing the proportion of animal proteins and increasing the proportion of vegetable proteins in the daily plate. Added to this nutritional challenge is an environmental challenge, with plant proteins being much less expensive to produce. However, plant proteins are mainly provided by cereals and legumes, a large diversity of which is necessary to cover the recommended daily intake of amino acids. However, given the collapse of cultivated biodiversity (loss of 75% in 100 years, FAO), the diversity of the supply is very reduced. Furthermore, for several years, public health studies have indicated a chronic deficit in micronutrients (minerals/trace elements, vitamins, antioxidants) as well as fiber in the diet of the French population. This comes in particular from the impoverishment of the nutritional quality of the fruits/vegetables/cereals/legumes consumed. In general, diet plays a major role in the primary prevention of chronic diseases (cardiovascular, diabetes, cancer) including periodontal disease. Thus, a diet low in sugars, saturated fats and rich in fiber would reduce the appearance of periodontal disease by strengthening salivary capacity. However, certain pathogenic periodontal bacteria (such as Porphyromonas gingivalis) can migrate (blood, digestive or respiratory routes) to reach other organs and represent a risk factor for other chronic diseases. Thus, the prevention of periodontal diseases through diet control would also contribute to the prevention of other chronic diseases. The benefit of plant-based diets to reduce the risk of cancer is now established. In addition, certain cereals such as spelled have superior nutritional qualities to common wheat, notably their protein content and they also contain higher quantities of certain bioactive compounds with anti-cancer properties (such as phytosterols). Furthermore, the potential impact of the oral microbiota on chronic diseases is now being studied: in healthy adults, a dysbiotic periodontal microbiota may be likely to lead to systemic para-inflammation. It has also been shown that a dietary change (Mediterranean diet) could lead to a reduction in pathogenic bacteria in the oral microbiota (including P. gingivalis). However, the link between the introduction of cereals into the diet and the evolution of cancer risk factor bacteria in the oral microbiota has never been demonstrated. This pilot clinical study plans to focus on the oral microbiota, with the aim of objectivizing a possible link between a modification of the diet by the introduction of cereals (einkorn type) and the evolution of certain bacteria of this microbiota. , notably P. gingivalis (but also T. forsythia, S. anginosus, A. actinomycetemcomitans, T. denticola and F. nucleatum), considered as cancer risk factors and thus observe an improvement in health status oral and general.
Today, there is a wide range of structural materials on the market, different in chemical, physical and biological properties, and information about them is very often limited only by the manufacturer's instructions, which allows to determine, at best, only the scope. In this regard, there are difficulties in choosing the optimal material for this particular situation, since without a thorough approach to studying the properties of the main materials used in dentistry, it seems difficult to provide high-quality dental care, the result of which is functional usefulness, aesthetics and durability.The problem of an individual approach to the choice of structural material from the standpoint of personalized medicine is even less studied - there are no data in the literature on the role of normal and pathogenic microflora in the development of destructive changes in structures and the development of complications, taking into account a personalized approach when analyzing the composition of the microbiota of the oral cavity, biochemical parameters of the oral fluid, blood depending on the material from which the structure is made.
Behçet's disease (BD) is a systemic vasculitis that affects, especially, young people. Although its etiology remains unexplained, data suggest that the inflammatory response during BD results from a disruption of the homeostasis of innate and adaptive immune responses in genetically predisposed people. The microbiota could play a triggering role in BD, in particular the salivary and dental plaque microbiota. The aim of the Behçetbiot study is therefore to establish microbial profiles of dental plaque, pathological (on the mouth ulcer) and non-pathological mucous membrane, salivary and digestive and to compare them with control subjects not suffering from BD, related to the first degree, of the same socio-cultural level and to determine whether dysbiosis is correlated with a local and systemic pro-inflammatory response, by measuring salivary level of pro-inflammatory cytokines and blood level of CRP, fibrinogen, orosomucoïd and haptoglobin, and to compare them with controls.
Specific oral microbiome has been found to contribute to the development of colorectal cancer. We speculate that specific oral microbiota related to colorectal cancer relapse after curative treatment. This study aim to discover if any difference of oral microbiota exist in patients who suffer from cancer relapse compared with patients who do not. Finally develop patient-centred programmes of surveillance protocols base on microbiota analysis.
Background: The human biome is the collection of microbial genes found in and on the body. It has been associated with many health conditions. But certain factors might affect the findings from microbiome studies. These include collection method, lab handling, and data processing. Researchers want to test the effect of long-term storage in a freezer on two oral sample collections methods. These methods are OMNIgene ORAL and Scope mouthwash. Objective: To test the effect of long-term freezing on the oral microbiome measured from OMNIgene ORAL and Scope mouthwash. Eligibility: Employees of the National Cancer Institute who: - Are age 18 or older - Have not used antibiotics in the past 3 months Design: Participants will have 6 visits within 2 weeks. At visit 1 they will complete a questionnaire about health and lifestyle. All visits last 15-30 minutes and include: - 1-2 saliva samples using OMNIgene ORAL: They will spit in a collector. - 1-2 Scope samples: They will gargle with Scope mouthwash and spit in a cup. - Questions about how well they followed the preparation procedures Participants will follow preparation procedures: For 12 hours before each visit, they must not: - Brush their teeth - Floss - Use mouthwash - Eat or drink anything other than water - Chew gum - Consume throat lozenges or candies - Smoke or chew tobacco Participants samples will be stored in a freezer. They will get data about their oral microbiome if they wish.