[Ecological Risk Assessment of Microplastics Occurring in Surface Water of Terrestrial Water Systems across China].

To assess the ecological risk of microplastics (MPs) occurring in the surface water of terrestrial water systems across China, this study obtained relevant literature and data by searching keywords including microplastics, urban, and river on websites such as Science Direct and Web of Science. We constructed an evaluation method of ecological risk characterization ratio (RCR) based on chemical hazard data, as well as data of MPs abundance and polymer proportion originating in studies from 2017 to 2021 that covered 33 water bodies in 15 provinces. The results showed that the average abundance of MPs in natural water bodies in China reached (3604.

[Distribution and Influencing Factors of DOM Components in Urban and Suburban Polluted Rivers].

Dissolved organic matter(DOM) in water environments is an important component of the global carbon cycle. Under the current urgency to control the pollution of urban rivers in China, exploring the influence of different exogenous and endogenous secondary pollution and weather patterns on river DOM is the premise to better understand the causes of the pollution. In this study, a large city in China was established as the research area, and the underlying water and sediments from 21 sites along urban and suburban rivers, and other water sources were evaluated.

[Relationship Between CO and CH Emissions in Urban Rivers and Sewage Discharging from a Municipal Drainage Network].

The increasing carbon emission of polluted rivers in urban areas is an environmental problem commonly faced by many cities in China, especially the megacities with vast populations. In this study, two typical rivers located in the megacity of Shanghai, including the suburban river network R1 and urban river R2 (in the central city), were investigated for their emission characteristics of CO and CH in dry and wet weather. We also analyzed the relationship between the state and type of river pollution and CO and CH emissions, and further explained the mechanisms of CO and CH emissions in urban rivers impacted by sewage discharged from the municipal drainage network.

[Molecular Chemo-diversity of the Dissolved Organic Matter Occurring in Urban Stormwater Runoff].

Stormwater runoff pollution occurring in urban areas can be a notable threat to the ecological environments of receiving water bodies. Dissolved organic matter (DOM) constitutes the primary type of pollutant in stormwater runoff, and tracking of its components and sources can provide valuable scientific bases for the future abatement of stormwater runoff pollution. In this study, aiming to demonstrate the characteristics and sources of the contained DOM in both pavement runoff (PR) and greenland runoff (GR), we applied ultra-high-resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) to analyze the molecular chemo-diversity of their DOM, as well as Spearman rank correlations between the molecular chemo-diversity and water quality indicators including suspended solids (SS), total nitrogen (TN), dissolved organic carbon (DOC), and dissolved lead (Pb).

[Removal of Microplastics by Different Treatment Processes in Shanghai Large Municipal Wastewater Treatment Plants].

Wastewater treatment plants are important sources of microplastics (MPs) in aquatic environments. The present study was conducted to investigate the number concentration, removal rate, and fate of MPs in two large municipal treatment plants in Shanghai. The MPs number concentration in the influent water of WWTP1 and WWTP2 were (226.

A simple risk score model for predicting contrast-induced nephropathy after coronary angiography in patients with diabetes.

Background: Contrast-induced nephropathy (CIN) is a common complication in patients undergoing coronary angiography (CAG) or percutaneous coronary intervention (PCI) and associated with poor outcome. Some previous studies have already set up models to predict CIN, but there is no model for patients with diabetes mellitus (DM) especially. Therefore, we aim to develop and validate a simple risk score for predicting the risk of CIN in patients with DM undergoing CAG/PCI.

Stenosing tenosynovitis : Evaluation of percutaneous release with a specially designed needle vs. open surgery.

Purpose: The purpose of this study was to evaluate the effectiveness of conventional open surgery and percutaneous release with a specially designed needle for treating stenosing tenosynovitis in terms of cure, relapse and complication rates.

Methods: In this study 89 fingers from 76 patients were randomly assigned and allocated to one of the treatment groups. A total of 37 patients were treated with open surgery in group 1 and 39 patients with percutaneous release using a specially designed needle in group 2.

Luteolin is a rare substrate of human catechol-O-methyltransferase favoring a para-methylation.

Scope: The study aimed to investigate the regioselectivity of methylation of luteolin (3',4',5,7-tetrahydroxyflavone) in human in vitro and in vivo.

Methods And Results: Recombinant human catechol-O-methyltransferase (COMT) and human liver S9 were utilized to study the kinetics of meta (3')- and para (4')- methylation of luteolin, and urine samples from volunteers after giving a luteolin-containing formulation were collected to determine the ratio of para-/meta-production. The results showed luteolin favored a para-methylation, with a ratio of of para-/meta-production in CLint (1.

Uricosuric and nephroprotective properties of Ramulus Mori ethanol extract in hyperuricemic mice.

Ethnopharmacological Relevance: Ramulus Mori, the branch of Morus alba, is widely used in traditional Chinese medicine prescriptions to treat gout and hyperuricemia.

Aim Of This Study: To evaluate the uricosuric and nephroprotective effects of ethanol extract of Ramulus Mori (ERM) and explore its possible mechanisms in hyperuricemic mice.

Materials And Methods: HPLC analysis was employed to determine the main constituents.

Mulberroside a possesses potent uricosuric and nephroprotective effects in hyperuricemic mice.

Mulberroside A is a major stilbene glycoside of MORUS ALBA L. (Moraceae), which is effectively used for the treatment of hyperuricemia and gout in traditional Chinese medicine. We examined whether mulberroside A had effects on renal urate underexcretion and dysfunction in oxonate-induced hyperuricemic mice and investigated the potential uricosuric and nephroprotective mechanisms involved.

[Dynamic rule of organic matter removal in vertical-flow constructed wetland].

Based upon the analysis of the removal rate and form change of the organic pollutants with the different height of the vertical-flow constructed wetland, it comes to the conclusion of the average longitudinal removal rate of variant forms organics and presents the influent concentration and the hydraulic load curve. The results indicated that: Under this experimental condition, the reduction of the organics in the vertical subsurface flow constructed wetland mainly occurred within the 0-10 cm substrate below the pipe distributor. In the meantime, the smaller the hydraulic load of influent, the higher the removal ratio of the organic pollutants in the substrate section.

[Clogging mechanism in vertical-flow constructed wetland: clogging cause and accumulation distribution characteristics].

In order to solve the problem of clogging in the vertical-flow constructed wetland, the reason of clogging and the distribution rule of clogging substance in the vertical-flow constructed wetland was investigated first. Based on the correlativity of accumulation quantity and banked-up water area or lacuna rate in constructed wetland systems, the results show that the accumulation of non-filter materials is the main reason of clogging. The banked-up phenomenon will occur when the accumulation of non-filter materials is more than 18.

[Effects of benazepril combined with valsartan on congestive heart failure].

Objective: To observe the effects of routine doses of benazepril combined with valsartan on congestive heart failure.

Methods: Totally 203 patients with congestive heart failure were randomized into Group A (receiving benazepril 20 mg/day), Group B (benazepril,10 mg/day plus valsartan, 80 mg/day), and group C (valsartan 160 mg/day) for different treatment protocols on the basis of routine therapy for heart failure with digitalis, diuretics and beta blockers. The cardiac functions and echocardiographical findings were evaluated before and after the treatments.

Dynamic investigation of leukocyte-endothelial cell adhesion interaction under fluid shear stress in vitro.

To establish a method to investigate the dynamic adhesion between leukocytes and human umbilical vein endothelial cells (HUVECs) under definite shear stress. A parallel plate flow chamber system was developed to produce the definite shear stress in vitro. After the cultured HUVECs were loaded in the flow chamber, the circulation solution containing acridine orange (AO)-labeled leukocytes was perfused to flow through chamber at 0.

Real-time detection of nitric oxide in cultured rat aorta endothelial cells induced by shear stress.

To establish a stable and real-time method to detect the production of intracellular nitric oxide (NO) of endothelial cells under different shear stresses. After the cultured endothelial cells were loaded with DAF-FM, the relative NO production was determined by fluorescence intensity, which was detected using Zeiss Axioskop 2 fluorescence microscope and ICCD-camera. The fluorescence of DAF-FM can reflect NO production.