Prevalence of extra-intestinal symptoms according to irritable bowel syndrome subtype.

Background: Irritable bowel syndrome (IBS) is a functional disorder commonly associated with extra-intestinal symptoms. However, the prevalence of these symptoms according to IBS subtype is not well established.

Aim: To compare the prevalence of extra-intestinal symptoms among patients with different subtypes of IBS.

Impact of Saccharomyces boulardii CNCM I-745 on Bacterial Overgrowth and Composition of Intestinal Microbiota in Diarrhea-Predominant Irritable Bowel Syndrome Patients: Results of a Randomized Pilot Study.

Background: Small intestinal bacterial overgrowth (SIBO) is associated with diarrhea-predominant irritable bowel syndrome (IBS-D). Probiotics like Saccharomyces boulardii CNCM I-745 (Sb) may be efficacious in balancing the microbiota. This randomized open label study assessed the effect of Sb in patients with bacterial overgrowth associated with IBS-D and its impact on the intestinal microbiota.

[Brain gut microbiota axis. Importance in clinical practice].

The brain-gut-microbiota axis is a bidirectional complex that connects the central nervous system with the digestive system. Alterations in the composition of the intestinal microbiota have been linked to the presence of digestive and extradigestive diseases such as neuropsychiatric diseases. Dysbiosis predisposes to the appearance of alterations in intestinal permeability, which facilitates the release of neurotransmitters and cytokines that generate favorable conditions for the appearance of a state known as neuroinflammation, which seems to be key in the physiopathogenesis of neuropsychiatric diseases.

Intestinal microbiota: its role in digestive diseases.

It is now well known that intestinal microbiota exerts not only several physiological functions, but has also been implied in the mechanisms of many conditions, both intestinal and extraintestinal. These advances, to the best of our knowledge, have been made possible by the development of new ways of studying gut flora. Metagenomics, the study of genetic material taken directly from environmental samples, avoiding individual culture, has become an excellent tool to study the human microbiota.

[Irritable bowel syndrome: a functional disorder?].

Irritable bowel syndrome is a highly prevalent condition responsible for almost one third of visits to the gastroenterologist and huge expenses for diagnosis, treatment and loss of working days. A unique pathophysiologic mechanism has not been elucidated yet and several possibilities have been proposed such as senso-perception and motor disturbances, the effect of stress and anxiety, serotonin receptor failures, activation of abnormal brain areas and pain modulation differences, among others. The absence of a biological marker has led the investigators to consider this syndrome as an exclusion diagnostic condition, once the organic diseases have been discarded The changes in gut microbiota have recently raised great interest among gastroenterologists.

A controlled pilot study on the efficacy of a low dose antibiotic for the treatment of chronic constipation in patients receiving a high fiber diet.

Background And Aims: In a previous uncontrolled experiment, oral vancomycin improved the symptoms (S) of chronic constipation (CC). The aim of this 21 day controlled pilot study was to determine if a low lincomycin dose improved the S of CC patients unresponsive to a high fiber diet.

Methods: On days 0-to-10, patients were randomized to 500 mg oral lincomycin + high fiber (L + F) or to placebo + high fiber (P + F).

[Breath hydrogen levels do not predict fiber intolerance in irritable bowel syndrome with constipation].

Background: Irritable Bowel Syndrome (IBS) is characterized by the worsening of symptoms with a high fiber diet. This intolerance could be related to an increase in colonic bacterial fermentation. The hydrogen breath test (HBT) is a marker of the intestinal micro flora fermentative capacity.