PMID- 23958764 OWN - NLM STAT- MEDLINE DCOM- 20131030 LR - 20150915 IS - 1098-4275 (Electronic) IS - 0031-4005 (Linking) VI - 132 IP - 3 DP - 2013 Sep TI - Probiotic administration in early life, atopy, and asthma: a meta-analysis of clinical trials. PG - e666-76 LID - 10.1542/peds.2013-0246 [doi] AB - BACKGROUND AND OBJECTIVE: Probiotics may reduce the risk of atopy and asthma in children. However, results from clinical trials have been conflicting, and several of them may have been underpowered. We performed a meta-analysis of randomized, placebo-controlled trials to assess the effects of probiotic supplementation on atopic sensitization and asthma/wheeze prevention in children. METHODS: Random-effects models were used to calculate pooled risk estimates. Meta-regression was conducted to examine the effect of potential factors on probiotics efficacy. RESULTS: Probiotics were effective in reducing total immunoglobulin E (IgE) (mean reduction: -7.59 U/mL [95% confidence interval (CI): -14.96 to -0.22]; P = .044). Meta-regression showed that the reduction in IgE was more pronounced with longer follow-up. Probiotics significantly reduced the risk of atopic sensitization when administered prenatally (relative risk: 0.88 [95% CI: 0.78 to 0.99]; P = .035 for positive result on the skin prick test and/or elevated specific IgE to common allergens) and postnatally (relative risk: 0.86 [95% CI: 0.75 to 0.98]; P = .027 for positive result on skin prick test). Administration of Lactobacillus acidophilus, compared with other strains, was associated with an increased risk of atopic sensitization (P = .002). Probiotics did not significantly reduce asthma/wheeze (relative risk: 0.96 [95% CI: 0.85 to 1.07]). CONCLUSIONS: Prenatal and/or early-life probiotic administration reduces the risk of atopic sensitization and decreases the total IgE level in children but may not reduce the risk of asthma/wheeze. Follow-up duration and strain significantly modified these effects. Future trials for asthma prevention should carefully select probiotic strain and consider longer follow-up. FAU - Elazab, Nancy AU - Elazab N AD - Division of Pediatric Pulmonology, Department of Pediatrics, University of Miami, Miami, FL, USA. FAU - Mendy, Angelico AU - Mendy A FAU - Gasana, Janvier AU - Gasana J FAU - Vieira, Edgar R AU - Vieira ER FAU - Quizon, Annabelle AU - Quizon A FAU - Forno, Erick AU - Forno E LA - eng PT - Journal Article PT - Meta-Analysis DEP - 20130819 PL - United States TA - Pediatrics JT - Pediatrics JID - 0376422 RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Adolescent MH - Asthma/immunology/*prevention & control MH - Child MH - Child, Preschool MH - Dermatitis, Atopic/immunology/*prevention & control MH - Double-Blind Method MH - Female MH - Follow-Up Studies MH - Humans MH - Immunoglobulin E/blood MH - Infant MH - Infant, Newborn MH - Male MH - Pregnancy MH - Probiotics/*administration & dosage MH - Randomized Controlled Trials as Topic MH - Respiratory Hypersensitivity/immunology/*prevention & control MH - Risk MH - Treatment Outcome OTO - NOTNLM OT - atopic sensitization OT - childhood asthma OT - childhood atopy OT - intestinal microbiome OT - meta-analysis OT - probiotics OT - total IgE EDAT- 2013/08/21 06:00 MHDA- 2013/10/31 06:00 CRDT- 2013/08/21 06:00 PHST- 2013/08/21 06:00 [entrez] PHST- 2013/08/21 06:00 [pubmed] PHST- 2013/10/31 06:00 [medline] AID - peds.2013-0246 [pii] AID - 10.1542/peds.2013-0246 [doi] PST - ppublish SO - Pediatrics. 2013 Sep;132(3):e666-76. doi: 10.1542/peds.2013-0246. Epub 2013 Aug 19.