title: Immunomodulating polysaccharide fractions of Menyanthes trifoliata L.
abstract: Looking for new plant sources of immunomodulating agents polysaccharide-rich fractions (PS) from Menyanthes trifoliata L. (Menyanthaceae) have been isolated. The herb of Menyanthes trifoliata L. was sequentially extracted with water, 0.1 M NaOH, 8% CH3COOH, and 1 M NaOH. After dialysis and resolution on Biogel P-10 four homogenic (B-4, B-5, C-4, D-5) and two nonhomogenic (A-3 and D-4) PS were isolated. About 0.5% of PS over 3500 Da were found in the dry plant material. They were characterized through chemical analysis, NMR and vibrational spectroscopy. Speciation analysis of chosen metal/metaloid elements was performed and an exceptionally high concentration of Se was found in PS of a pure water extract (A-3). The biological tests on the immunomodulating influence with human blood-derived lymphocytes and granulocytes revealed that two fractions, B-4 and B-5, were strong stimulators of immune cells, whereas fractions D-5 and A-3 were found as potent suppressive and anti-inflammatory agents. The applied isolation procedures led to the separation of active compounds into stimulatory and inhibitory fractions.
authors.affiliation: Faculty of Chemistry, Wrocław University, 50-383 Wrocław, Poland. radek@wchuwr.chem.uni.wroc.pl
authors.forename: Janina
authors.initials: J
authors.lastname: Kuduk-Jaworska
authors.forename: Joanna
authors.initials: J
authors.lastname: Szpunar
authors.forename: Kazimierz
authors.initials: K
authors.lastname: Gasiorowski
authors.forename: Barbara
authors.initials: B
authors.lastname: Brokos
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D002478:Cells, Cultured; D006098:Granulocytes / Q000187:drug effects / Q000276:immunology; D006801:Humans; D007155:Immunologic Factors / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D008213:Lymphocyte Activation / Q000187:drug effects; D008214:Lymphocytes / Q000187:drug effects / Q000276:immunology; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D011134:Polysaccharides / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology
chemical_list: D007155:Immunologic Factors; D010936:Plant Extracts; D011134:Polysaccharides