Dietary flavonoids, which occur in many plant foods, are considered as the most active constituents among the plant-derived ones in vitro and in vivo. To date, many studies have addressed the anti-inflammatory activity of flavonoids. However, their considerable structural diversity and in vivo bioavailability make them able to modulate different signaling pathways. The present review attempted to summarize and highlight a broad range of inflammation-associated signaling pathways modulated by flavonoids. Finally, based on the current scientist's literature, structure-activity relationships were concluded. Dietary flavonoids have the ability to attenuate inflammation by targeting different intracellular signaling pathways triggered by NF-κB, AP-1, PPAR, Nrf2, and MAPKs. Identification of the main structural features required for the modulation of these inflammation-related pathways (hydroxylation pattern, C2=C3 double bond) have an important role to play in the development of new anti-inflammatory drugs.
This study was performed to evaluate the hypolipidemic and anti‐atherogenic activities of the crude polysaccharides extracted from abalone viscera (AVCP). The major functional groups of purified polysaccharides were analyzed by infrared spectroscopy (IR). Male Kunming mice (SPF) were divided into six groups and were treated with normal diet or high‐fat diet with AVCP or Xuezhikang (hypotensive drug) for 5 weeks. Physicochemnical analysis of AVCP showed the presence of 60.4% polysaccharides, 17.9% protein, 6.0% fat and 10.9% moisture. The IR analysis of AVP showed the presence of functional groups of sugar moiety and sulfate groups. The results demonstrated that AVCP not only led to significant reduction of total cholesterol (TC), triglycerides (TG), low‐density lipoprotein cholesterol (LDL‐C), and increase of high‐density lipoprotein cholesterol (HDL‐C) in plasma, but also to significant increments of malondialdehyde (MDA) and superoxide dismutase (SOD) activities. However, AVCP played no role in mice weight. Furthermore, the results of the photomicrograph of liver tissue showed that AVCP reduced lipid droplets and prevented the disordered structure of the liver. The results suggested that AVCP exhibited significantly hypolipidemic and anti‐atherogenic activities.
Protein
fouling on critical biointerfaces causes significant public
health and clinical ramifications. Multiple strategies, including
superhydrophobic (SHP) surfaces and coatings, have been explored to
mitigate protein adsorption on solid surfaces. SHP materials with
underwater air plastron (AP) layers hold great promise by physically
reducing the contact area between a substrate and protein molecules.
However, sustaining AP stability or lifetime is crucial in determining
the durability and long-term applications of SHP materials. This work
investigated the effect of protein on the AP stability using model
SHP substrates, which were prepared from a mixture of silica nanoparticles
and epoxy. The AP stability was determined using a submersion test
with real-time visualization. The results showed that AP stability
was significantly weakened by protein solutions compared to water,
which could be attributed to the surface tension of protein solutions
and protein adsorption on SHP substrates. The results were further
examined to reveal the correlation between protein fouling and accelerated
AP dissipation on SHP materials by confocal fluorescent imaging, surface
energy measurement, and surface robustness modeling of the Cassie–Baxter
to Wenzel transition. The study reveals fundamental protein adsorption
mechanisms on SHP materials, which could guide future SHP material
design to better mitigate protein fouling on critical biointerfaces.
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