scholarly journals Cutting Edge: Probiotics and Fecal Microbiota Transplantation in Immunomodulation

2019 ◽  
Vol 2019 ◽  
pp. 1-17 ◽  
Author(s):  
Wenjie Zeng ◽  
Jie Shen ◽  
Tao Bo ◽  
Liangxin Peng ◽  
Hongbo Xu ◽  
...  
Keyword(s):  
Immune Responses ◽  
Intestinal Tract ◽  
Recent Literature ◽  
Fecal Microbiota Transplantation ◽  
Treg Cells ◽  
Fecal Microbiota ◽  
T Helper ◽  
Beneficial Effects ◽  
Bowel Diseases ◽  
Inflammatory Bowel

Probiotics are commensal or nonpathogenic microbes that confer beneficial effects on the host through several mechanisms such as competitive exclusion, antibacterial effects, and modulation of immune responses. Some probiotics have been found to regulate immune responses via immune regulatory mechanisms. T regulatory (Treg) cells, T helper cell balances, dendritic cells, macrophages, B cells, and natural killer (NK) cells can be considered as the most determinant dysregulated mediators in immunomodulatory status. Recently, fecal microbiota transplantation (FMT) has been defined as the transfer of distal gut microbial communities from a healthy individual to a patient’s intestinal tract to cure some immune disorders (mainly inflammatory bowel diseases). The aim of this review was followed through the recent literature survey on immunomodulatory effects and mechanisms of probiotics and FMT and also efficacy and safety of probiotics and FMT in clinical trials and applications.

scholarly journals Defined microbiota transplant restores Th17/RORγt+regulatory T cell balance in mice colonized with inflammatory bowel disease microbiotas

2020 ◽  
Vol 117 (35) ◽  
pp. 21536-21545 ◽  
Author(s):  
Graham J. Britton ◽  
Eduardo J. Contijoch ◽  
Matthew P. Spindler ◽  
Varun Aggarwala ◽  
Belgin Dogan ◽  
...  
Keyword(s):  
Inflammatory Bowel Disease ◽  
Gut Microbiota ◽  
Bowel Disease ◽  
Th17 Cells ◽  
Fecal Microbiota Transplantation ◽  
Cell Subset ◽  
Treg Cells ◽  
Fecal Microbiota ◽  
Inflammatory Bowel

The building evidence for the contribution of microbiota to human disease has spurred an effort to develop therapies that target the gut microbiota. This is particularly evident in inflammatory bowel diseases (IBDs), where clinical trials of fecal microbiota transplantation have shown some efficacy. To aid the development of novel microbiota-targeted therapies and to better understand the biology underpinning such treatments, we have used gnotobiotic mice to model microbiota manipulations in the context of microbiotas from humans with inflammatory bowel disease. Mice colonized with IBD donor-derived microbiotas exhibit a stereotypical set of phenotypes, characterized by abundant mucosal Th17 cells, a deficit in the tolerogenic RORγt+regulatory T (Treg) cell subset, and susceptibility to disease in colitis models. Transplanting healthy donor-derived microbiotas into mice colonized with human IBD microbiotas led to induction of RORγt+Treg cells, which was associated with an increase in the density of the microbiotas following transplant. Microbiota transplant reduced gut Th17 cells in mice colonized with a microbiota from a donor with Crohn’s disease. By culturing strains from this microbiota and screening them in vivo, we identified a specific strain that potently induces Th17 cells. Microbiota transplants reduced the relative abundance of this strain in the gut microbiota, which was correlated with a reduction in Th17 cells and protection from colitis.

scholarly journals Improving the Efficacy of Mesenchymal/Stromal-Based Therapy for Treatment of Inflammatory Bowel Diseases

Biomedicines ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 1507
Author(s):  
Mercedes Lopez-Santalla ◽  
Marina Inmaculada Garin
Keyword(s):  
Clinical Trials ◽  
Immune Responses ◽  
Inflammatory Bowel Diseases ◽  
Intestinal Inflammation ◽  
The Novel ◽  
Beneficial Effects ◽  
Commensal Microbiota ◽  
Bowel Diseases ◽  
Inflammatory Processes ◽  
Inflammatory Bowel

Inflammatory bowel diseases (IBD) consisting of persistent and relapsing inflammatory processes of the intestinal mucosa are caused by genetic, environmental, and commensal microbiota factors. Despite recent advances in clinical treatments aiming to decrease inflammation, nearly 30% of patients treated with biologicals experienced drawbacks including loss of response, while others can develop severe side effects. Hence, novel effective treatments are highly needed. Mesenchymal stem/stromal cell (MSCs) therapy is an innovative therapeutic alternative currently under investigation for IBD. MSCs have the inherent capacity of modulating inflammatory immune responses as well as regenerating damaged tissues and are therefore a prime candidate to use as cell therapy in patients with IBD. At present, MSC-based therapy has been shown preclinically to modulate intestinal inflammation, whilst the safety of MSC-based therapy has been demonstrated in clinical trials. However, the successful results in preclinical studies have not been replicated in clinical trials. In this review, we will summarize the protocols used in preclinical and clinical trials and the novel approaches currently under investigation which aim to increase the beneficial effects of MSC-based therapy for IBD.

scholarly journals Update on Fecal Microbiota Transplantation In Inflammatory Bowel Diseases

2018 ◽  
Author(s):  
Shawn Kwok ◽  
Bridgette Choi ◽  
Jae Choi ◽  
Satnaam Bassi ◽  
David Shih
Keyword(s):  
Inflammatory Bowel Diseases ◽  
Fecal Microbiota Transplantation ◽  
Fecal Microbiota ◽  
Bowel Diseases ◽  
Inflammatory Bowel

Fecal microbiota transplantation. Prospects in pediatric practice

2021 ◽  
Vol 19 (3) ◽  
pp. 37-45
Author(s):  
E.S. Pimenova ◽  
◽  
E.M. Mukhametova ◽  
E.Ya. Musaeva ◽  
S.I. Erdes ◽  
...  
Keyword(s):  
Irritable Bowel Syndrome ◽  
Clostridium Difficile ◽  
Short Bowel Syndrome ◽  
Fecal Microbiota Transplantation ◽  
Fecal Microbiota ◽  
Pediatric Practice ◽  
Short Bowel ◽  
Bowel Diseases ◽  
Inflammatory Bowel ◽  
Irritable Bowel

The aim of this review is to summarize data on the experience of using fecal microbiota transplantation (FMT) as a method of treating intestinal diseases, in particular in pediatric practice. FMT is the process of transferring fecal material from a healthy donor to the recipient’s gastrointestinal tract in order to alter gut microbial composition. To date, the most amount of research has been conducted in the field of treatment for Clostridium difficile infection. The mortality rate among children with this pathology is 1–5%. Randomized clinical trials show a higher efficacy of FMT compared to the use of antibiotics (efficacy rates of 90% and 26%, respectively) in the treatment for C. difficile infection. The effectiveness of FMT as a treatment for other diseases has been discussed. Cases of the successful use of FMT as a treatment for short bowel syndrome in children have been described, and studies on the effectiveness of this technique in patients with irritable bowel syndrome and inflammatory bowel diseases have been conducted. Most studies have been carried out on small samples of patients, and the results vary. The potential of using FMT as a treatment of children with severe bowel diseases is high, which makes it necessary to conduct further research in pediatric practice. Key words: inflammatory bowel disease, Clostridium difficile infection, short bowel syndrome, irritable bowel syndrome, fecal microbiota transplantation

Any Future for Fecal Microbiota Transplantation as Treatment Strategy for Inflammatory Bowel Diseases?

2016 ◽  
Vol 34 (Suppl. 1) ◽  
pp. 74-81 ◽  
Author(s):  
Patrizia Kump ◽  
Christoph Högenauer
Keyword(s):  
Randomized Controlled Trials ◽  
Inflammatory Bowel Diseases ◽  
Fecal Microbiota Transplantation ◽  
Case Series ◽  
Fecal Microbiota ◽  
Controlled Trials ◽  
Randomized Controlled ◽  
Significant Difference ◽  
Bowel Diseases ◽  
Inflammatory Bowel

Fecal microbiota transplantation (FMT) is a novel therapeutic procedure aiming at restoring a normal intestinal microbiota by application of fecal microorganisms from a healthy subject into the gastrointestinal tract of a patient. FMT is the most effective treatment for recurrent Clostridium difficile infections (CDI). These infections also occur in patients with inflammatory bowel diseases (IBDs), where case series demonstrated a successful treatment of CDI by FMT in 83-92% of patients. The effect of FMT on the activity of IBD has mainly been investigated in ulcerative colitis (UC) patients, including 3 randomized controlled trials. So far, 2 randomized controlled trials showed a superiority of FMT compared to placebo in inducing remission in UC, while 1 study found no significant difference to placebo. The variation in response to FMT between these studies as well as in the uncontrolled trials might be explained by many differences in the way of FMT application, patient pretreatment and patient and donor selection. The data for the use of FMT in Crohn's disease and pouchitis are sparse; currently, no conclusion can be drawn regarding the effectiveness of FMT in these indications. It needs to be noted that cases of IBD activation after FMT have been reported. So far, FMT can only be recommended to be used for the treatment of concomitant CDI in IBD in clinical practice. For treating IBD irrespective of CDI, FMT should be only used in clinical trials. Current forms of FMT, especially protocols using repeated application, are very time and personnel consuming. Future trends are the use of defined stable microbiota preparations, in particular oral preparations, which will enable better and larger controlled trails for investigating FMT in IBD.

scholarly journals The Th17/Treg Cell Balance: A Gut Microbiota-Modulated Story

2019 ◽  
Vol 7 (12) ◽  
pp. 583 ◽  
Author(s):  
Hongyu Cheng ◽  
Xiong Guan ◽  
Dekun Chen ◽  
Wentao Ma
Keyword(s):  
Gut Microbiota ◽  
Treg Cell ◽  
Immune Cells ◽  
Intestinal Tract ◽  
Therapeutic Potential ◽  
Fecal Microbiota Transplantation ◽  
Treg Cells ◽  
Fecal Microbiota ◽  
Adaptive Immune ◽  
Cell Balance

The intestinal tract of vertebrates is normally colonized with a remarkable number of commensal microorganisms that are collectively referred to as gut microbiota. Gut microbiota has been demonstrated to interact with immune cells and to modulate specific signaling pathways involving both innate and adaptive immune processes. Accumulated evidence suggests that the imbalance of Th17 and Treg cells is associated with the development of many diseases. Herein, we emphatically present recent findings to show how specific gut microbiota organisms and metabolites shape the balance of Th17 and Treg cells. We also discuss the therapeutic potential of fecal microbiota transplantation (FMT) in diseases caused by the imbalance of Th17 and Treg cells

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