Evidence map›Paper›PMID 32651947›Full record

ArticleGlycobiology2021

Ion-exchange purification and structural characterization of five sulfated fucoidans from brown algae.

Andreas Sichert, Sophie Le Gall, Leesa Jane Klau, Brigitte Laillet, Hélène Rogniaux, Finn Lillelund Aachmann, Jan-Hendrik Hehemann

Open access · greenAbstract read
In one paragraph

Article in Glycobiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
4.0field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 45 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 3 countries.

Andreas SichertMax Planck Institute for Marine Microbiology, 28359 Bremen, Germany.
Sophie Le GallINRAE, UR BIA (Biopolymers Interactions Assemblies), F-44316 Nantes, France.
Leesa Jane KlauNorwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology and Food Science, NTNU Norwegian University of Science and Technology, 7491 Trondheim, Norway.
Brigitte LailletINRAE, UR BIA (Biopolymers Interactions Assemblies), F-44316 Nantes, France.
Hélène RogniauxINRAE, UR BIA (Biopolymers Interactions Assemblies), F-44316 Nantes, France.
Finn Lillelund AachmannNorwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology and Food Science, NTNU Norwegian University of Science and Technology, 7491 Trondheim, Norway.
Jan-Hendrik HehemannMax Planck Institute for Marine Microbiology, 28359 Bremen, Germany.
Biopolymères Interactions Assemblages · FRMax Planck Institute for Marine Microbiology · DENorwegian University of Science and Technology · NOInstitut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Fucoidans are a diverse class of sulfated polysaccharides integral to the cell wall of brown algae, and due to their various bioactivities, they are potential drugs. Standardized work with fucoidans is required for structure-function studies, but remains challenging since available fucoidan preparations are often contaminated with other algal compounds. Additionally, fucoidans are structurally diverse depending on species and season, urging the need for standardized purification protocols. Here, we use ion-exchange chromatography to purify different fucoidans and found a high structural diversity between fucoidans. Ion-exchange chromatography efficiently removes the polysaccharides alginate and laminarin and other contaminants such as proteins and phlorotannins across a broad range of fucoidans from major brown algal orders including Ectocarpales, Laminariales and Fucales. By monomer composition, linkage analysis and NMR characterization, we identified galacturonic acid, glucuronic acid and O-acetylation as new structural features of certain fucoidans and provided a novel structure of fucoidan from Durvillaea potatorum with α-1,3-linked fucose backbone and β-1,6 and β-1,3 galactose branches. This study emphasizes the use of standardized ion-exchange chromatography to obtain defined fucoidans for subsequent molecular studies.

Indexed as

PhaeophyceaeSulfatesFucosePolysaccharidesfucoidanFucosePolysaccharidesSulfatesbrown algaefucoidanion-exchange chromatographysulfated polysaccharides

Identifiers

PMID32651947
PMCPMC8091464
OpenAlexW3041375916

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.