Polysaccharides isolated from Ampelopsis grossedentata and their immunomodulatory activity.

To explore the immunomodulatory activity of polysaccharides from Ampelopsis grossedentata, two polysaccharides named AGP1 and AGP2 were isolated and purified by DEAE-cellulose 52 column and Sephacryl S-300HR chromatography. AGP1 and AGP2 were composed of fucose, arabinose, rhamnose, galactose, glucose, mannose, galacturonic acid, and glucuronic acid, with a ratio of 0.5: 10.

Synthesis of acylated derivatives of alginate oligosaccharides and evaluation of their potential antibacterial activities against Staphylococcus aureus.

Alginate oligosaccharides (AOS) are crucial carbohydrate-based biomaterial used in the synthesis of potential drugs and biological agents, but their antibacterial activities are not significant. In this study, AOS acylated derivatives were synthesized by grafting maleic anhydride (MA) onto AOS at varying ratios. Additionally, their inhibitory effects against Staphylococcus aureus were thoroughly investigated.

Advances in the preparation, characterization, and biological functions of chitosan oligosaccharide derivatives: A review.

Chitosan oligosaccharide (COS), which represent the positively charged basic amino oligosaccharide in nature, is the deacetylated and degraded products of chitin. COS has become the focus of intensive scientific investigation, with a growing body of practical and clinical studies highlighting its remarkable health-enhancing benefits. These effects encompass a wide range of properties, including antibacterial, antioxidant, anti-inflammatory, and anti-tumor activities.

Efficacy of metoprolol plus atorvastatin for carotid atherosclerosis and its influence on carotid intima-media thickness and homocysteine level.

Objective: To analyze the effects of metoprolol (MET) plus atorvastatin (ATO) on carotid intima-media thickness (IMT) and homocysteine (Hcy) level in carotid atherosclerosis (CAS) patients.

Methods: In this retrospective study, 90 patients with CAS admitted to the Hangzhou Ninth People's Hospital between January 2019 and July 2021 were enrolled, including 40 cases (control group, the Con) treated with MET and 50 cases treated with the combination therapy of MET plus ATO (Research group, the Res). The efficacy and related influencing factors were observed and compared.

Role of primary reaction initiated by 254 nm UV light in the degradation of p-nitrophenol attacked by hydroxyl radicals.

The degradation kinetics of p-nitrophenol (p-NP) exposed to 254/185 nm UV light were studied in two modes, i.e., 254 nm UV light intensity enhanced mode and normal mode.

Study on the mechanism of photo-degradation of p-nitrophenol exposed to 254 nm UV light.

The degradation mechanism of p-nitrophenol (p-NP) exposed to 254 nm UV light was studied in the presence and the absence of oxygen respectively via both steady-state photolysis and time-resolved laser flash photolysis (LFP) experiments. It has been confirmed that p-NP can be photo-ionized to produce its radical cation (p-NP(+)) and hydrated electron (e(aq)(-)) with a quantum yield of 0.52.