View clinical trials related to Probiotics.
Filter by:To examine the cognitive and metabolic effects of a probiotic supplement that is readily and already available for purchase in public drug stores. This study is a double-blinded randomized cross-over placebo-controlled intervention study. Participants will be randomized to receive either the probiotic supplement or the placebo during the first intervention period which will last 2 weeks. This will be followed by a washout period, after which they will proceed to the second intervention period, also lasting 2 weeks and also followed by a washout period.
Enterocolitis(EC) is the most common and serious postoperative complication of Hirschsprung's disease(HD) with high morbidity and mortality. Probiotics are live microbes that, when administered in adequate amounts, confer health benefit to the host.Based on this previous knowledge on the beneficial effects of probiotics during pro-inflammatory conditions of the gastrointestinal tract, investigators hypothesized that oral probiotics could decrease the incidence and severity of Hirschsprung's disease associated enterocolitis(HAEC).Investigators conducted a prospective, multicenter, randomized and controlled trial to assess whether oral probiotics could decrease the incidence and severity of Hirschsprung's disease associated enterocolitis(HAEC).
The purpose of this study is to investigate the effect of probiotics in enteral nutrition on improving gut function, inflammatory markers and clinical outcomes in critically ill patients admitted to the intensive care unit.
We want to study the effect of short-term consumption of probiotics (a mixture of L. rhamnosus GG and B. lactis BB-12)on the composition of the oral flora.
It has recently been discovered that bacteria are able to communicate using specialised molecules known as Quorum Sensing Signalling Molecules (QSSMs). An accumulation of QSSMs in their surrounding environment allow for the bacteria to quantify the size of colonies. At specific colony sizes the concentration of QSSMs reaches a critical threshold leading to the activation of genes that cause an infection. It is by this mechanism that bacteria within a colony coordinate behaviour to activate infectivity when colony sizes are large enough to withstand defensive measures from the host's immune system. A disruption of quorum sensing may reduce the severity of infection and this has led to the development of inhibitors of quorum sensing as a new strategy in antibacterial therapy. QSSMs are also thought to facilitate infection by other mechanisms and are able to influence the number and function of a specific type of immune cell known as an 'antigen presenting cell'. These cells are pivotal in allowing the immune system to recognise components of bacteria as foreign and thereby mount the appropriate response. It was found that large numbers of these types of cells underwent programmed cell death (cell suicide) in the presence of QSSMs compared to when QSSMs were absent. This mirrors the situation in blood sampled from patients with severe infections where there is a greater proportion of cell deaths among antigen presenting cells than other types of immune cell. This study aims to establish in healthy volunteers, the mechanisms by which QSSMs affect immune cells and facilitate the spread of infection. Antibiotic administration in humans can alter the environment of the intestine and can lead to an overgrowth of harmful bacteria to potentially cause an infection. Probiotics supplements can prevent bacterial overgrowth and potentially reduce infective complications. The mechanism, which we aim to clarify, may involve changes in both the production of QSSMs and the function of immune cells. Hypothesis 1. Antibiotic use alters gut flora, leading to the appearance in the systemic circulation of bacterial QSSMs and changes in immune function of the host. 2. Probiotics and/or prebiotics have beneficial effects by preserving the normal resident gut flora, thereby, modulating bacterial QSSMs and preserving the immune function of the host. Aims The aims of our study are 2 fold: 1. Firstly, to study the effect of orally administered antibiotic on QSSMs (in faeces and blood) and on innate and adaptive immunity in healthy humans. 2. Secondly, to study the effect of orally administered combinations of prebiotic, probiotic and antibiotic on QSSMs (in faeces and blood) and on innate and adaptive immunity in healthy humans.
The purpose of this study is to evaluate the efficacy and safety of probiotics eN-Lac® capsules (Lactobacillus paracasei GMNL-32) for the treatment of children with perennial allergic rhinitis(PAR).