The administration of probiotic/synbiotic were associated with a significant improvement in FPG , FBI , HOMA I-R , BMI .
It also modified Ferriman-Gallway , serum triglycerides , serum testosterone , hs-CRP , NO , TAC , GSH , and MDA .
Subgroup analysis of the type of intervention showed that probiotics were associated with greater testosterone and FPG reduction ;  synbiotics administration result ed in a more pronounced decrease of the FBI .
Subgroup analyses on the duration of therapy showed that , probiotic/synbiotic administration had a significantly greater effect on QUICK-I in the case of women with 12-weeks of therapy than in the 8-weeks therapy group .
Nevertheless , we did not observe any significant difference was observed in terms of FBI , HOMA-IR , and FPG .
Probiotics and synbiotics seem to either an effect on/influence metabolic , hormonal and inflammatory parameters , or can influence them .
Consequently , it could lead to an improvement of fertility in PCOS
Several r and omized controlled trials ( RCTs ) have investigated the use of probiotic/synbiotic in PCOS patients , without clarifying the real use in clinical practice .
The aim of this meta- analysis was to evaluate the effectiveness of probiotics and synbiotics on metabolic , hormonal and inflammatory parameters of PCOS  .
Effects of Probiotic Supplementation on Pancreatic β-cell Function and C-reactive Protein in Women with Polycystic Ovary Syndrome: A Randomized Double-blind Placebo-controlled Clinical Trial
Background : Polycystic ovary syndrome ( PCOS ) is a polygenic endocrine disorder in women of reproductive age that lead to infertility . The aim of this study was to investigate the effects of probiotic on pancreatic β-cell function and C-reactive protein ( CRP ) in PCOS patients . Methods : This r and omized double-blind placebo-controlled clinical trial was conducted among 72 women aged 15–40 years old diagnosed with PCOS . Participants were r and omly assigned to two groups receiving : ( 1 ) Probiotic supplements ( n = 36 ) , ( 2 ) placebo ( n = 36 ) for 8-week . Fasting blood sample s were taken at baseline and after 8-week of intervention . Results : Probiotic supplementation , compare with placebo , reduced fasting blood sugar ( −4.15 ± 2.87 vs. 2.57 ± 5.66 mg/dL , respectively P = 0.7 ) , serum insulin levels in crude model ( −0.49 ± 0.67 vs. 0.34 ± 0.82 μIU/mL , respectively , P = 0.09 ) , homeostasis model of assessment -insulin resistance score ( −0.25 ± 0.18 vs. −0.05 ± 0.18 , respectively , P = 0.14 ) nonsignificantly . Serum insulin levels after adjustment with covariates reduced significantly in probiotic group ( P = 0.02 ) . We did not found any significant differences in mean changes of CRP between groups ( −0.25 ± 0.18 vs. −0.05 ± 0.18 , respectively , P = 0.14 ) . Conclusions : A 8-week multispecies probiotics supplementation had nonsignificantly beneficial effect on pancreatic β-cell function and CRP in PCOS patients . After adjustment for some covariates , serum insulin changes were significantly different between groups
The administration of probiotic/synbiotic were associated with a significant improvement in FPG , FBI , HOMA I-R , BMI .
It also modified Ferriman-Gallway , serum triglycerides , serum testosterone , hs-CRP , NO , TAC , GSH , and MDA .
Subgroup analysis of the type of intervention showed that probiotics were associated with greater testosterone and FPG reduction ;  synbiotics administration result ed in a more pronounced decrease of the FBI .
Subgroup analyses on the duration of therapy showed that , probiotic/synbiotic administration had a significantly greater effect on QUICK-I in the case of women with 12-weeks of therapy than in the 8-weeks therapy group .
Nevertheless , we did not observe any significant difference was observed in terms of FBI , HOMA-IR , and FPG .
Probiotics and synbiotics seem to either an effect on/influence metabolic , hormonal and inflammatory parameters , or can influence them .
Consequently , it could lead to an improvement of fertility in PCOS
Several r and omized controlled trials ( RCTs ) have investigated the use of probiotic/synbiotic in PCOS patients , without clarifying the real use in clinical practice .
The aim of this meta- analysis was to evaluate the effectiveness of probiotics and synbiotics on metabolic , hormonal and inflammatory parameters of PCOS  .