Objective To explore the causal relationship between gut microbiota and urinary tract infections using data from genome-wide association studies. Methods The gut microbiota data were sourced from the MiBioGen consortium, comprising genetic variables from 18 340 individuals. UTI data (ieu-b-5.65) were derived from the UK Biobank. Six methods including inverse variance weighted (IVW), Mendelian randomization (MR)-Egger, maximum likelihood, simple mode, weighted mode, and weighted median were employed for two-sample MR analysis on these datasets. Additionally, MR-PRESSO was used to detect and correct for heterogeneity and outliers in the analysis. Cochran's Q test and leave-one-out analysis were applied to assess potential heterogeneity and multiple effects. Furthermore, reverse MR analysis was conducted to investigate causal relationships between UTI and gut microbiota. Results According to IVW method analysis results, bacterial genera Eggerthella (OR=1.08, 95%CI 1.01 to 1.16, P=0.034) and Ruminococcaceae (UCG005) (OR=1.10, 95%CI 1.01 to 1.20, P=0.022) were found to increase the risk of UTI, while Defluviitaleaceae (UCG011) (OR=0.90, 95%CI 0.82 to 0.99, P=0.022) appeared to decrease it. Reverse MR analysis did not reveal a significant effect of UTI on these three bacterial genera. Our study found no evidence of heterogeneity or pleiotropy based on the results of Cochran’s Q test, MR-Egger, and MR-PRESSO global test. Conclusion In this MR study, we demonstrate a causal association between Eggerthella, Ruminococcaceae, Defluvitalaceae and the risk of urinary tract infections.
Objective To assess the effectiveness of acupunctures in treatment of primary dysmenorrhea by using network meta-analysis. Methods Databases including the PubMed, EMbase, The Cochrane Library (Issue 6, 2016), CBM, CNKI and WanFang Data were searched for relevant clinical randomized controlled trials (RCTs) comparing acupunctures with ibuprofen or other kinds of acupuncture from inception to July 6th 2016. Two reviewers independently screened literature, extracted data and assessed the risk of bias of included studies. Then meta-analysis was performed by using Stata 13.0 and WinBugs 1.43 software. Results A total of 56 RCTs involving 4 600 PD patients were included. The results of network meta-analysis showed that: for the clinical effects: simple acupuncture, acupuncture plus moxa-moxibustion, acupuncture plus indirect-moxibustion, electroacupuncture, warm-acupuncture and electroacupuncture plus warm-acupuncture were superior to ibuprofen, acupuncture plus moxa-moxibustion, acupuncture plus indirect-moxibustion and warm-acupuncture were superior to simple acupuncture. For VAS score, there was no significant difference among all treatments. Simple acupuncture and ibuprofen were superior to acupuncture plus indirect-moxibustion in dysmenorrhea symptom scores. Conclusion The included 6 kinds of acupunctures are superior to ibuprofen and different acupunctures have different advantages in the treatment of PD. When selecting treatment regimen, it is better to consider the clinical situation and TCM syndrome differentiation.