[Occurrence Characteristics and Ecological Risk Assessment of Antibiotics in Reclaimed Water-receiving Rivers in Beijing].

Taking Liangshui River, the reclaimed water-receiving river in Beijing, as the research area, the types, detection frequencies, and concentrations of 16 antibiotics in water and sediment were analyzed, and their temporal-spatial variation and occurrence characteristics were discussed. The results showed that nine and 13 target antibiotics were detected in the water and sediment of Liangshui River, with the antibiotic concentration ranges of ND-116.68 ng·L and ND-235.

[Formation mechanism and assessment method for urban black and odorous water body: A review].

Black and odorous (BO) water body reflects very typical serious water pollution related to organic pollution, sediment re-suspension and thermal pollution. Also, the insufficiency of water cycle is one of the most important hydrodynamic factors for formatting BO water body. The blackening substances mainly include suspended particles, Fe- and S-containing substances; the odour causing substances include the small molecule gases such as HS, NH and some compounds such as VOSCs, Geosmin and 2-MBI.

[Research progress on the application of IPAT model and its variants].

IPAT model and its variants could describe the quantitative relationships between human driving force and the environmental pressure, benefit fundamental understanding of the dynamics of coupled human and natural systems, and are regarded as effective tools in solving the environmental problems caused by the social and economic development. In this paper, the fundamental concepts of IPAT model and its variants were discussed including definitions, historical developments and the hot issues in their applications. The future research trends were put forward aiming to further expand the use of IPAT models in the sustainable development of environment and social decision-making.

TREM-1 as a potential therapeutic target in neonatal sepsis.

Objective: Bacterial sepsis in neonates is associated with elevated morbidity and mortality. A role for the pro-inflammatory Triggering Receptor Expressed on Myeloid cells-1 (TREM-1) is suspected in the innate immune response to bacteria, but little is known about its activities in infants. To begin exploring the feasibility of treating neonatal sepsis by blocking leukocyte TREM-1, we compared TREM-1 membrane expression and mRNA in newborns without clinical or microbiological evidence of infection, to that of healthy adults.

[Association of genetic polymorphisms of angiotensin converting enzyme and matrix metallo proteinase-1 with idiopathic pulmonary fibrosis].

Objective: To investigate the correlation between angiotensin converting enzyme (ACE) and matrix metallo proteinase (MMP)-1 gene polymorphisms and the risk of idiopathic pulmonary fibrosis (IPF) in a Han Chinese population from Hebei Province.

Methods: Eighty-four IPF patients and 100 controls were enrolled from the Second Hospital of Hebei Medical University. Polymerase chain reaction (PCR) and polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) were used to detect ACE gene insertion/deletion (I/D) polymorphism and MMP-1 polymorphism respectively.