Post-screening characterization of an acidic polysaccharide from Echinacea purpurea with potent anti-inflammatory properties in vivo.
Food Funct
; 11(9): 7576-7583, 2020 Sep 23.
Article
in En
| MEDLINE
| ID: mdl-32821898
ABSTRACT
We extracted and purified three polysaccharides from Echinacea purpurea using pectinase-assisted extraction to obtain crude preparations and optimized the method using an orthogonal analysis. We obtained three polysaccharide fractions (EPPS-1, -2 and -3) using DEAE ion exchange and gel filtration chromatography. The homogeneity of the fractions was confirmed using high performance gel permeation chromatography. EPPS-3 administered to mice in a LPS-induced septicemia model effectively counteracted the effects of LPS resulting in significantly less lung damage. This trend was also seen in the serum and lung cytokine levels where EPPS-3 significantly decreased the levels of TNF-α and IL-6 and increased IL-10. Particularly, we fully characterized the structure of the EPPS-3 polysaccharide using a series of technologies. This polysaccharide structure was mainly composed of â4)-α-Glcp-(1â, â4)-α-Galp-(1â, T-α-Araf-(1â, â3,4)-ß-GalpA-(1â glycosidic linkages at a certain proportion. In sum, EPPS-3, with a clear structure, has potent anti-inflammatory activities and is a candidate for further development as an anti-inflammatory agent for clinical development.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Polysaccharides
/
Anti-Inflammatory Agents, Non-Steroidal
/
Echinacea
Type of study:
Diagnostic_studies
/
Prognostic_studies
/
Screening_studies
Limits:
Animals
Language:
En
Journal:
Food Funct
Year:
2020
Document type:
Article