Evaluating the Efficacy of Probiotics on Inflammatory Cytokines in Alcoholic Liver Disease: A Focus on IL-6 and IL-10.

Probiotic supplementation significantly reduced IL-6 levels in patients with alcoholic liver disease.

• SMD = -0.68, 95% CI [-1.15; -0.20], p = 0.005
• Seven independent comparisons were included in the meta-analysis
• Data sourced from randomized controlled trials identified via PubMed, Embase, and Web of Science

Probiotic supplementation was associated with a significant increase in IL-10 levels in alcoholic liver disease patients.

• SMD = 0.93, 95% CI [-0.02; 1.87], p = 0.05
• IL-10 is an anti-inflammatory cytokine, suggesting probiotics may promote an anti-inflammatory response
• This finding was noted as notable within the results

Probiotics had no statistically significant effect on IL-1β levels in alcoholic liver disease patients.

• SMD = -0.35, 95% CI [-0.87, 0.17], p = 0.18
• The direction of effect was toward reduction, but did not reach statistical significance

Probiotics had no statistically significant effect on TNF-α levels in alcoholic liver disease patients.

• SMD = -0.73, 95% CI [-1.68, 0.21], p = 0.13
• Despite a numerically large SMD, the wide confidence interval spanning zero indicated no significant effect

Subgroup analyses indicated that the efficacy of probiotics in reducing IL-6 was more pronounced in specific subgroups.

• Greater IL-6 reduction was observed in studies with higher proportions of Asian participants
• Solid dosage forms of probiotics were associated with more pronounced IL-6 reduction compared to other formulations
• Studies with higher proportions of male subjects showed more pronounced IL-6 reduction
• Subgroup analyses examined region, formulation type, and gender as moderating variables

The meta-analysis was based on a systematic search of randomized controlled trials investigating probiotic interventions in alcoholic liver disease patients.

• Databases searched included PubMed, Embase, and Web of Science
• Seven independent comparisons were selected for meta-analysis
• Outcome measures included IL-6, IL-1β, TNF-α, and IL-10
• Standardized mean difference (SMD) was used as the effect size measure