Evidence map›Paper›PMID 42340122›Full record

ArticleChemistry & biodiversity2026

Isolation of Metabolites With Antiviral Activity From the Brown Algae Dictyota fasciola and Dictyota mediterranea.

Aikaterini Koutsaviti, Elsi-Evangelia Andriotaki, Maria Harizani, Katarzyna Owczarek, Magdalena Pachota, Aleksandra Synowiec, Artur Szczepański, Paweł Botwina, Krzysztof Pyrć, Vassilios Roussis and 1 more

Abstract read
In one paragraph

Article in Chemistry & biodiversity, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Review
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

11 authors.

Aikaterini KoutsavitiSection of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece.
Elsi-Evangelia AndriotakiSection of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece.
Maria HarizaniSection of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece.
Katarzyna OwczarekMicrobiology Department, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Cracow, Poland.
Magdalena PachotaMicrobiology Department, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Cracow, Poland.
Aleksandra SynowiecMicrobiology Department, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Cracow, Poland.
Artur SzczepańskiMicrobiology Department, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Cracow, Poland.
Paweł BotwinaMicrobiology Department, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Cracow, Poland.
Krzysztof PyrćMicrobiology Department, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Cracow, Poland.
Vassilios RoussisSection of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece.
Efstathia IoannouSection of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece.

Funding

European Commission 101102733European Union Horizon Europe 101135438
6 · The paper itself

Abstract

Twenty diterpenes (1-20) and a sesquiterpene (21) were isolated from Dictyota fasciola and Dictyota mediterranea collected from the Aegean Sea and evaluated as potential antiviral agents against a panel of viral pathogens. Among the isolated metabolites, six dolabellane diterpenes (1-4, 9, and 12) and one germacrane sesquiterpene (21) are new natural products. The evaluation of the antiviral activity of the isolated compounds was carried out against three viruses of different phylogenetic backgrounds that are characterized by high incidence in human population and cause significant medical threat and economic losses worldwide: herpes simplex virus (HSV-1), human coronavirus (HCoV-NL63), and Zika virus (ZIKV). The antiviral assays demonstrated that some compounds inhibited the viruses within a concentration range of 3-10 µg/mL. The maximal suppression of viral replication was 90% for HSV-1, 99.99% for HCoV-NL63, and 96.8% for ZIKV, highlighting the differential efficacy of the tested compounds against specific viruses. Mechanistic studies revealed that, depending on the compound, antiviral activity occurred either at the virus attachment stage or during a post-entry replication stage. Among the tested compounds, metabolites 6-8, 13, 17, and 18 exhibited considerable antiviral activity against RNA (HCoV-NL63, ZIKV) and DNA (HSV-1) viruses.

Indexed as

Antiviral AgentsDiterpenesPhaeophyceaeSesquiterpenesAnimalsCoronavirusDose-Response Relationship, DrugHerpesvirus 1, HumanHumansMicrobial Sensitivity TestsMolecular StructureVirus ReplicationZika VirusAntiviral AgentsDiterpenesSesquiterpenesantiviral activitybrown algaeDictyota fasciolaDictyota mediterraneaditerpenes

Identifiers

PMID42340122
PMCPMC13291923

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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.