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Carbohydr Polym ; 334: 122030, 2024 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-38553228

RESUMEN

According to traditional Chinese medicine theory, Ganoderma lucidum (G. lucidum) presents certain effects for nourishing nerves and calming the mind. G. lucidum polysaccharides (GLPs) have various biological activities; however, the structural characterization and the structure-activity relationship in anti-neuroinflammation of GLPs needs to be further investigated. In this work, the crude polysaccharide GL70 exhibited a remarkable impact on enhancing the spatial learning and memory function, as well as reducing the anxiety symptoms of the lipopolysaccharide (LPS)-induced rat model of Alzheimer's disease (AD). A galactoglucomannan (GLP70-1-2) was isolated from GL70, and characterized by monosaccharide composition, partial acid hydrolysis, methylation, and NMR analysis. The backbone of GLP70-1-2 was →6)-α-D-glcp-(1 â†’ 6)-ß-D-galp-(1 â†’ [6)-ß-D-manp-(1]3 â†’ 4)-α-D-Glcp-(1 â†’ 6)-α-D-glcp-(1 â†’ 2)-ß-D-galp-(1 â†’ [4)-α-D-glcp-(1 â†’ 6)-ß-D-manp-(1 â†’ 2)-ß-D-galp-(1]2 â†’ 6)-ß-D-glcp-(1 â†’ 6)-ß-D-glcp-(1→ with two side chains attached to O-4 of →6)-ß-D-galp-(1→ and O-3 of →6)-ß-D-glcp-(1→, respectively. In addition, GLP70-1-2 exhibited remarkable efficacy in decreasing the level of pro-inflammatory factors in LPS-activated BV2 cells through the TLR4/MyD88/NF-κB pathway. Collectively, GLP70-1-2 exhibited significant anti-neuroinflammatory activity and may have the potential for developing as a drug for AD.


Asunto(s)
Reishi , Ratas , Animales , Reishi/química , Lipopolisacáridos/toxicidad , Mananos/química , Polisacáridos/química
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