FVPA1, a novel polysaccharide, has been isolated from fruiting bodies of the culinary-medicinal mushroom Flammulina velutipes, a historically popular, widely cultivated and consumed functional food with an attractive taste, beneficial nutraceutical properties such as antitumor and immunomodulatory effects, and a number of essential biological activities. The average molecular weight was estimated to be ~1.8 × 104 Da based on high-performance size exclusion chromatography. Sugar analyses, methylation analyses, and 1H, 13C, and 2-dimensional nuclear magnetic resonance spectroscopy revealed the following structure of the repeating units of the FVPA1 polysaccharide Identification of this structure would conceivably lead to better understanding of the nutraceutical functions of this very important edible fungus. Bioactivity tests in vitro indicated that FVPA1 could significantly enhance natural killer cell activity against K562 tumor cells.
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http://dx.doi.org/10.1615/IntJMedMushrooms.v19.i6.50 | DOI Listing |
Drug Des Devel Ther
January 2025
Foshan Hospital of Traditional Chinese Medicine, Foshan, Guangdong, People's Republic of China.
Background: Dachaihu decoction (DCHD) is a common Chinese medicine formula against sepsis-induced acute lung injury (SALI). PANoptosis is a novel type of programmed cell death. Nevertheless, The mechanisms of DCHD against SALI via anti-PANoptosis remains unknown.
View Article and Find Full Text PDFFront Nutr
January 2025
Prefabricated Dish Industry Development Research Institute, Zhejiang Dong Fang Polytechnic, Wenzhou, China.
Introduction: Oxidative stress, triggered by an imbalance between reactive oxygen species (ROS) production and cellular antioxidant defense mechanisms, is implicated in various pathological conditions. Plant-derived polysaccharides have gained significant attention as potential natural antioxidants due to their biocompatibility, biodegradability, and structural versatility.
Methods: This study focuses on the purification, structural characterization, and antioxidant activities of a novel pectin polysaccharide (HFPS) isolated from the flowers of Linn.
Int J Biol Macromol
January 2025
SCUT-Zhuhai Institute of Modern Industrial Innovation, South China University of Technology, Zhuhai 519715, China; Guangzhou Institute of Modern Industrial Technology, South China University of Technology, Nansha, 511458, China; School of Food Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510640, China.
Lactoferrin protein (LF) is a natural protein with certain emulsifying ability, but is sensitive to be affected by environmental factors and has poor oxidative stability to be used as emulsifier. In this study, the emulsifying ability of LF was significantly improved after conjugation with Rosa roxburghii Tratt fruit polysaccharides (RTFP), and the emulsion stability mechanism of LF-RTFP conjugates (L-R) were elucidated through the utilization of CLSM (confocal laser scanning microscopy), interfacial tension, apparent viscosity, and protein adsorption rate. The emulsion stabilized by L-R showed the smaller particle size (17.
View Article and Find Full Text PDFEur J Histochem
January 2025
Department of Critical Care Medicine, The Qujing No.1 People's Hospital, Qujing.
Intestinal barrier damage causes an imbalance in the intestinal flora and microbial environment, promoting a variety of gastrointestinal diseases. This study aimed to explore the mechanism by which adipose-derived stem cells (ADSCs) repair intestinal barrier damage. The human colon adenocarcinoma cell line Caco-2 and rats were treated with lipopolysaccharide (LPS) to establish in vitro and in vivo models, respectively, of intestinal barrier damage.
View Article and Find Full Text PDFBiomacromolecules
January 2025
School of Life Science and Health Engineering, Jiangnan University, Wuxi 214122, China.
Three chondroitin sulfate (CS) analogues with predominant subtypes (A, C, and E) were prepared from engineered K4 combined with regioselective sulfation. CS with the designed sulfates as the main components was characterized by nuclear magnetic resonance spectroscopy, elementary analysis, and disaccharide analysis. CS prepared from the native or degraded capsular polysaccharide had molecular weights of 1.
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