Vasectomy reversal in China during the recent decade: insights from a multicenter retrospective investigation.

To date, there is little information about the demography of vasectomy reversal (VR) patients or the factors currently influencing VR effectiveness in China, especially after the universal two-child policy was released in 2015. In this research, demographic data and perioperative medical records of VR patients were extracted from seven major hospitals in different provinces or municipalities of China. Meanwhile, a telephone survey of the patients was conducted to collect follow-up information.

Outbreak of infections caused by Group A Streptococcus after modified radical mastectomy.

Background: Eight infections occurred after modified radical mastectomies in a tertiary-care hospital. Group A streptococci (GAS) were isolated from three of the eight patients.

Methods: To control the outbreak, an epidemiologic investigation was conducted, and healthcare workers were screened for pathogens.

[Evolvement of soil quality in salt marshes and reclaimed farmlands in Yancheng coastal wetland].

Through vegetation investigation and soil analysis, this paper studied the evolvement of soil quality during natural vegetation succession and after farmland reclamation in the Yancheng coastal wetland of Jiangsu Province. Along with the process of vegetation succession, the soil physical, chemical, and biological properties in the wetland improved, which was manifested in the improvement of soil physical properties and the increase of soil nutrient contents, microbial biomass, and enzyme activities. Different vegetation type induced the differences in soil properties.

[Genetic susceptibility of single nucleotide polymorphism in MGMT to non-Hodgkin lymphoma].

Objective: To evaluate the relationship between five single nucleotide polymorphism loci in the MGMT, XPA, XPD and XPG genes and the prevalence of non-Hodgkin's lymphoma.

Methods: A case-control study of 73 lymphoma cases and 500 healthy controls was conducted and the Mass-ARRAY method was applied for detection of MGMT L84F, MGMT K178R, XPA TSS+62, XPD K751Q and XPG TSS+372.

Results: MGMT L84F (T allele) was associated with an increased risk of non-Hodgkin lymphoma (OR=2.

[Influence of salt marsh vegetation on spatial distribution of soil carbon and nitrogen in Yancheng coastal wetland].

Soil samples under different salt marsh vegetations in Yancheng coastal wetland were collected, and their organic carbon (C) and total nitrogen (N) were determined, aimed to analyze the influence of salt marsh vegetation on the spatial distribution of soil carbon and nitrogen. The results showed that the organic C and total N contents in top soils varied from 1.71 to 7.

[Analysis of major QTL for Fusarium head blight resistance on the short arm of chromosome 3B in wheat].

Three recombinant inbred populations, Ning894037/Alondra, Wangshuibai/Alondra and Sumai3/Alondra, were analyzed for QTLs associated with Fusarium head blight resistance by interval mapping and composite interval mapping in this study. The result showed that the major QTLs were detected on the short arm of chromosome 3B of all three resistant parents using the data of FHB resistance evaluated in greenhouse or field. They were located in the interval of 5.