Reciprocal Regulation between Fur and Two RyhB Homologs in , and Roles of RyhBs in Biofilm Formation.

Objective: To investigate reciprocal regulation between Fur and two RyhB homologs in ( ), as well as the roles of RyhBs in biofilm formation.

Methods: Regulatory relationships were assessed by a combination of colony morphology assay, primer extension, electrophoretic mobility shift assay and DNase I footprinting.

Results: Fur bound to the promoter-proximal DNA regions of and to repress their transcription, while both RyhB1 and RyhB2 repressed the expression of Fur at the post-transcriptional level.

Comparison of viromes in vaginal secretion from pregnant women with and without vaginitis.

Background: Although some studies have investigated the bacterial community in vaginal tract of pregnant women, there are few reports about the viral community (virome) in this type of microenvironment.

Methods: To investigate the composition of virome in vaginal secretion samples, 40 vaginal secretion samples from pregnant women with vaginitis and 20 vaginal secretion samples from pregnant women without vaginitis, pooled into 4 and 2 sample pools, respectively, were subjected to viral metagenomic analysis.

Results: Results indicated virus sequences showing similarity to human papillomavirus (HPV), anellovirus, and norovirus were recovered from this cohort of pregnant women.

Epidemic factors and control of hepatic echinococcosis in Qinghai province.

Hepatic echinococcosis, also called echinococcosis, is a health-threatening disease commonly found in pasture, and belongs to parasitic zoonoses. The purpose of this study was to investigate the prevalence and the risk factors of echinococcosis in Qinghai province in order to provide fundamental data for prevention and control of echinococcosis in Qinghai province. A total of 23 445 people from 21 counties were enrolled in this study by multi-stage stratified random sampling.

[Combined use of occluder plus bare stent in the treatment of aortic dissection with tear at the area of visceral branches].

Objective: To evaluate the novel method of combinedly use of occluder and bare stent in the treatment of aortic dissection with distal tear at visceral branches.

Methods: From April 2010 to September 2012, 6 patients (5 male and 1 female patients, aged from 29 to 62 years, mean 47.2 years) were diagnosed as Stanford type B aortic dissection that been revealed by CT angiography.