PMID- 25899251 OWN - NLM STAT- MEDLINE DCOM- 20160303 LR - 20181202 IS - 2042-6984 (Electronic) IS - 2042-6976 (Print) IS - 2042-6976 (Linking) VI - 5 IP - 6 DP - 2015 Jun TI - A systematic review and meta-analysis of probiotics for the treatment of allergic rhinitis. PG - 524-32 LID - 10.1002/alr.21492 [doi] AB - BACKGROUND: Probiotics have proven beneficial in a number of immune-mediated and allergic diseases. Several human studies have evaluated the efficacy of probiotics in allergic rhinitis; however, evidence for their use has yet to be firmly established. The current systematic review seeks to synthesize the results of available randomized trials. METHODS: In a systematic review and meta-analysis, the Medline, EMBASE, and Cochrane Library databases were reviewed and randomized controlled trials (RCTs) were extracted based on defined inclusion criteria. The effect of probiotics on Rhinitis Quality of Life (RQLQ) scores, Rhinitis Total Symptom Scores (RTSS), as well as total and antigen-specific serum immunoglobulin E (IgE) levels were evaluated by meta-analysis. RESULTS: A total of 23 studies with 1919 patients were identified, including 21 double-blind RCTs and 2 randomized crossover studies. Multiple probiotic strains, study populations, and outcome measures were used in individual trials. Seventeen studies showed a significant clinical benefit from the use of probiotics in at least 1 outcome measure when compared to placebo, whereas 6 trials showed no benefit. Among the trials eligible for meta-analysis, the use of probiotics resulted in a significant improvement in RQLQ scores compared to placebo (standard mean difference [SMD] -2.23; p = 0.02). Probiotics had no effect on RTSS (SMD -0.36; p = 0.13) or total IgE levels (SMD 0.01; p = 0.94), although there was a trend toward a reduction in antigen-specific IgE (SMD 0.20; p = 0.06) in the placebo group compared to probiotic. CONCLUSION: Probiotics may be beneficial in improving symptoms and quality of life in patients with allergic rhinitis; however, current evidence remains limited due to study heterogeneity and variable outcome measures. Additional high-quality studies are needed to establish appropriate recommendations. CI - (c) 2015 ARS-AAOA, LLC. FAU - Zajac, Alexander E AU - Zajac AE AD - Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University School of Medicine, Nashville, TN. FAU - Adams, Austin S AU - Adams AS AD - Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University School of Medicine, Nashville, TN. FAU - Turner, Justin H AU - Turner JH AD - Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University School of Medicine, Nashville, TN. LA - eng GR - L30 AI113795/AI/NIAID NIH HHS/United States PT - Journal Article PT - Meta-Analysis PT - Review PT - Systematic Review DEP - 20150420 PL - United States TA - Int Forum Allergy Rhinol JT - International forum of allergy & rhinology JID - 101550261 RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Child MH - Child, Preschool MH - Humans MH - Immunoglobulin E/blood MH - Middle Aged MH - Probiotics/*administration & dosage MH - Quality of Life MH - Rhinitis, Allergic/psychology/*therapy MH - Young Adult PMC - PMC4725706 MID - NIHMS734705 OTO - NOTNLM OT - allergic rhinitis OT - allergy OT - atopy OT - lactobacillus OT - meta-analysis OT - probiotics OT - randomized trial COIS- Conflicts of interest: None EDAT- 2015/04/23 06:00 MHDA- 2016/03/05 06:00 PMCR- 2016/06/01 CRDT- 2015/04/23 06:00 PHST- 2014/09/04 00:00 [received] PHST- 2014/11/28 00:00 [revised] PHST- 2014/12/12 00:00 [accepted] PHST- 2015/04/23 06:00 [entrez] PHST- 2015/04/23 06:00 [pubmed] PHST- 2016/03/05 06:00 [medline] PHST- 2016/06/01 00:00 [pmc-release] AID - 10.1002/alr.21492 [doi] PST - ppublish SO - Int Forum Allergy Rhinol. 2015 Jun;5(6):524-32. doi: 10.1002/alr.21492. Epub 2015 Apr 20.