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Table 1 Study characteristics

From: A systematic review and meta-analysis: probiotics in the treatment of irritable bowel syndrome

First author

Number of participants (age range)l

Diagnostic criteria

Probiotics*

Measured outcomes included:

Length of treatment

Guyonnet, 2007, France

274

(20–65)

Rome II

Constipation-

Predominant IBS

Activia Danone, Combination containing Bifidobacterium. animalis DN 1730101(1.25 × 1010 cfu per pot) together with S. thermophilus and L. bulgaricus 1.2 × 109 cfu per pot

Health related quality of life Bloating, abdominal pain, global digestive symptom

6 weeks

Gawronska A, 2007, Poland

37

(6–16)

Rome II

LGG (Lactobacillus rhamnosus GG) 3 × 109 cfu, twice daily,

Self reported abdominal pain

4 weeks

Whorwell PJ, 2006, UK

362

(19–69)

All female

Rome II

3 different strengths treatments

Bifidobacterium (B.) infantis 35624 × 106 live bacterial cells

B. infantis 35624 × 108 live bacterial cells

B. infantis 35624 × 1010 live bacterial cells

Once daily capsule

Global assessment (SGA) of IBS symptoms

Abdominal pain/discomfort, Bloating/distension, passage of gas

4 weeks

Bausserman M, 2005, USA

64

(6–20)

Rome II

lactobacillus GG 1010 and Inulin was also present both in treatment and in placebo one capsule twice a day

Changes in abdominal pain severity

6 weeks

Niv, 2005, Israel

54

(19–70)

Rome II

1 × 108 cfu of Lactobacillus reuteri ATCC 55730, four tablets to be taken for seven days, followed by a dose of 2 tablets per day until close of the study

abdominal pain, quality of life

6 months

Kajander K, 2005, Finland

103

(21–65)

Rome I and Rome II

Combination

Lactobacillusrhamnosus GG, Lactobacillus rhamnosus LC 705, Bifidobacterium breve Bb 99 and Propionibacterium freudenreichii ssp. Shemanii JS 8–9 × 109

Abdominal pain, distension, flatulence, borborygmi

6 months

Kim HJ, Vazquez Roque M, 2005, USA

48

(21–75)

Rome II

VSL # 3 mixture of bacteria combination twice daily (450 billion viable lyophilized bacteria)

One packet twice a day

Abdominal bloating, flatulence, abdominal pain

8 weeks

O'Mahony L, 2005, Ireland

80

(18–73)l

Rome II

Either B infantis 35624 Or L. salivarIus UCC 4331 each delivered in a dose of 1 × 10 10

Once Daily

Abdominal pain or discomfort, bloating or distension and bowel movement difficulty

Quality of life assessment using an IBS specific questionnaire

8 weeks

Saggioro A, 2004, Italy

Unclear (6–64)

Rome II

Combination L. plantarum LP01 plus one strain of B. breve BR0

5 × 10 10 cfu/ml once a day

Combination Strain of L. plantarum LP01 plus a strain of L. acidophilus LA02 one strain of B. breve BR0

5 × 109 cfu/ml once a day

Pain score at different locations in RLQ and LLQ of the abdomen

Overall symptom score

4 weeks

Kim HJ, Camilleri M, 2003, USA

25

(19–70)

Rome II

Diarrhea predominant symptom

Combination VSL # 3 mixture of bacteria

One packet twice a day

abdominal pain, bloating, flatulence

8 weeks

Niedzielin K, 2001, Poland

40

(27–63)

Manning

Lactobacillus plantarum 299V

5 × 107 CFU/ml twice a day

improvement in pain and flatulence

4 weeks

Nobaek S, 2000, Sweden

60

(21–78)

Rome

400 ml/day of rose hip drink syrup containing 5 × 10 7 cfu/ml of L. plantarum DSM 9843 (strain 299V) and 0.009 g/ml oat flour

Overall GI function abdominal pain, flatulence, defecation

4 weeks

O'Sullivan MA, 2000, Ireland

24

(24–60)

Rome

Lactobacillus GG 1 × 1010 cfu/day

two tablets twice a day

Abdominal bloating, pain, bowel frequency

20 week

Gade, 1989, Denmark

54

(16–60)

constipation and or diarrheoa, abdominal pain, meteorism, borborygmus and flatulence

Paraghurt (freeze dried culture of Streptococcus faecium) 4 tablets morning and evening

abdominal pain, meteorism, borborygmus, flatulence

4 weeks

  1. cfu: Colony Forming Unit
  2. Combination denotes a mixture of probiotics