Original Contribution | Published:

Large and Small Intestine; Inflammatory Bowel Disease

Alteration of intestinal microflora is associated with reduction in abdominal bloating and pain in patients with irritable bowel syndrome

American Journal of Gastroenterology volume 95, pages 12311238 (2000) | Download Citation

Subjects

Abstract

OBJECTIVE:

The influence of the gastrointestinal (GI) microflora in patients with irritable bowel syndrome (IBS) has not been clearly elucidated. This study was undertaken to see if patients with IBS have an imbalance in their normal colonic flora, as some bacterial taxa are more prone to gas production than others. We also wanted to study whether the flora could be altered by exogenous supplementation. In a previous study we have characterized the mucosa-associated lactobacilli in healthy individuals and found some strains with good colonizing ability. Upon colonization, they seemed to reduce gas formation.

METHODS:

The study comprised 60 patients with IBS and a normal colonoscopy or barium enema. Patients fulfilling the Rome criteria, without a history of malabsorption, and with normal blood tests underwent a sigmoidoscopy with biopsy. They were randomized into two groups, one receiving 400 ml per day of a rose-hip drink containing 5 × 107 cfu/ml of Lactobacillus plantarum (DSM 9843) and 0.009 g/ml oat flour, and the other group receiving a plain rose-hip drink, comparable in color, texture, and taste. The administration lasted for 4 wk. The patients recorded their own GI function, starting 2 wk before the study and continuing throughout the study period. Twelve months after the end of the study all patients were asked to complete the same questionnaire regarding their symptomatology as at the start of the study.

RESULTS:

All patients tolerated the products well. The patients receiving Lb. plantarum had these bacteria on rectal biopsies. There were no major changes of Enterobacteriaceae in either group, before or after the study, but the Enterococci increased in the placebo group and remained unchanged in the test group. Flatulence was rapidly and significantly reduced in the test group compared with the placebo group (number of days with abundant gas production, test group 6.5 before, 3.1 after vs 7.4 before and 5.6 after for the placebo group). Abdominal pain was reduced in both groups. At the 12-month follow-up, patients in the test group maintained a better overall GI function than control patients. There was no difference between the groups regarding bloating. Fifty-nine percent of the test group patients had a continuous intake of fermented products, whereas the corresponding figure for the control patients was 73%.

CONCLUSIONS:

The results of the study indicate that the administration of Lb. plantarum with known probiotic properties decreased pain and flatulence in patients with IBS. The fiber content of the test solution was minimal and it is unlikely that the fiber content could have had any effect. This type of probiotic therapy warrants further studies in IBS patients.

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Acknowledgements

This study was supported by The Swedish Medical Research Council, grant No. K98–17X-11616–03A, the Faculty of Medicine, Lund University, Albert Påhlsson's Foundation, Crafoord's Foundation, and Malmö University Hospital, Sweden.

Author information

Affiliations

  1. Department of Surgery, Lund University, Lund University Hospital, Lund, Sweden

    • Sören Nobaek
  2. Probi AB, Ideon Gamma 1, Lund, Sweden

    • Marie-Louise Johansson
  3. Laboratory of Food Hygiene, Chemical Center, Lund University, Lund, Sweden

    • Göran Molin
    •  & Siv Ahrné
  4. Department of Surgery, Lund University, Malmö University Hospital, Malmö, Sweden

    • Bengt Jeppsson

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Corresponding author

Correspondence to Bengt Jeppsson.

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DOI

https://doi.org/10.1111/j.1572-0241.2000.02015.x

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