Aliment Pharmacol Ther. 2009 Mar 1;29(5):508-18. Epub 2008 Dec 2.
Clinical trial: the effects of a trans-galactooligosaccharide prebiotic on faecal microbiota and symptoms in irritable bowel syndrome.
Silk DB, Davis A, Vulevic J, Tzortzis G, Gibson GR. Department of Academic Surgery, Imperial College Healthcare NHS Trust, London, UK. This email address is being protected from spambots. You need JavaScript enabled to view it.
BACKGROUND: Gut microflora-mucosal interactions may be involved in the pathogenesis of irritable bowel syndrome (IBS). AIM: To investigate the efficacy of a novel prebiotic trans-galactooligosaccharide in changing the colonic microflora and improve the symptoms in IBS sufferers.
METHODS: In all, 44 patients with Rome II positive IBS completed a 12-week single centre parallel crossover controlled clinical trial. Patients were randomized to receive either 3.5 g/d prebiotic, 7 g/d prebiotic or 7 g/d placebo. IBS symptoms were monitored weekly and scored according to a 7-point Likert scale. Changes in faecal microflora, stool frequency and form (Bristol stool scale) subjective global assessment (SGA), anxiety and depression and QOL scores were also monitored.
RESULTS: The prebiotic significantly enhanced faecal bifidobacteria (3.5 g/d P < 0.005; 7 g/d P < 0.001). Placebo was without effect on the clinical parameters monitored, while the prebiotic at 3.5 g/d significantly changed stool consistency (P < 0.05), improved flatulence (P < 0.05) bloating (P < 0.05), composite score of symptoms (P < 0.05) and SGA (P < 0.05). The prebiotic at 7 g/d significantly improved SGA (P < 0.05) and anxiety scores (P < 0.05).
CONCLUSION: The galactooligosaccharide acted as a prebiotic in specifically stimulating gut bifidobacteria in IBS patients and is effective in alleviating symptoms. These findings suggest that the prebiotic has potential as a therapeutic agent in IBS.
PMID: 19053980 [PubMed - indexed for MEDLINE]
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