Evidence map›Paper›PMID 32098277›Full record

ArticleAntioxidants (Basel, Switzerland)2020

Pharmacological Targets of Kaempferol Within Inflammatory Pathways-A Hint Towards the Central Role of Tryptophan Metabolism.

Stefanie Hofer, Simon Geisler, Rebecca Lisandrelli, Hieu Nguyen Ngoc, Markus Ganzera, Harald Schennach, Dietmar Fuchs, Julian E Fuchs, Johanna M Gostner, Katharina Kurz

Open access · goldAbstract read
In one paragraph

Article in Antioxidants (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.2field-weighted citation impact, top 25% 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

18 citing papers in PubMed, 38 citations in OpenAlex.

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  17. Synthesis ofNanomaterials (Basel, Switzerland) · 2021
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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

10 authors at 4 institutions in 1 country.

Stefanie HoferInstitute of Medical Biochemistry, Biocenter, Medical University of Innsbruck, Innrain 80, 6020 Innsbruck, Austria.
Simon GeislerInstitute of Biological Chemistry, Biocenter, Medical University of Innsbruck, Innrain 80, 6020 Innsbruck, Austria.
Rebecca LisandrelliInstitute of Medical Biochemistry, Biocenter, Medical University of Innsbruck, Innrain 80, 6020 Innsbruck, Austria.
Hieu Nguyen NgocInstitute of Pharmacy/Pharmacognosy, University of Innsbruck, Innrain 80-82/IV, 6020 Innsbruck, Austria.
Markus GanzeraInstitute of Pharmacy/Pharmacognosy, University of Innsbruck, Innrain 80-82/IV, 6020 Innsbruck, Austria.
Harald SchennachCentral Institute of Blood Transfusion and Immunology, University Hospital, Anichstrasse 35, 6020 Innsbruck, Austria.
Dietmar FuchsInstitute of Biological Chemistry, Biocenter, Medical University of Innsbruck, Innrain 80, 6020 Innsbruck, Austria.
Julian E FuchsDepartment of Medicinal Chemistry, Boehringer Ingelheim RCV GmbH & Co KG, Dr. Boehringer-Gasse 5- 11, 1120 Vienna, Austria.
Johanna M GostnerInstitute of Medical Biochemistry, Biocenter, Medical University of Innsbruck, Innrain 80, 6020 Innsbruck, Austria.
Katharina KurzDepartment of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria.
Innsbruck Medical University · ATUniversität Innsbruck · ATBoehringer Ingelheim (Austria) · ATUniversity Hospital Innsbruck · AT

Funding

Austrian Science Fund P 29671Austrian Science Fund T703Austrian Science Fund FWF P 29671
6 · The paper itself

Abstract

The flavonoid kaempferol is almost ubiquitously contained in edible and medicinal plants and exerts a broad range of interesting pharmacological activities. Interactions with central inflammatory processes can be exploited to treat or attenuate symptoms of disorders associated with chronic immune activation during infections, malignancies, and neurodegenerative or cardiovascular disorders. Many drugs, phytochemicals, and nutritional components target the catabolism of the essential amino acid tryptophan by indoleamine 2,3-dioxygenase 1 (IDO-1) for immunomodulation. We studied the effects of kaempferol by in vitro models with human peripheral blood mononuclear cells (PBMC) and THP-1 derived human myelomonocytic cell lines. Kaempferol suppressed interferon-γ dependent immunometabolic pathways: Formation of the oxidative stress biomarker neopterin and catabolism of tryptophan were inhibited dose-dependently in stimulated cells. In-silico docking studies revealed a potential interaction of kaempferol with the catalytic domain of IDO-1. Kaempferol stimulated nuclear factor kappa B (NF-κB) signaling in lipopolysaccharide (LPS)-treated THP-1 cells, thereby increasing the mRNA expression of interleukin (IL) 1 beta, tumor necrosis factor, and nuclear factor kappa B subunit 1, while IL6 was downregulated. Data suggest that concerted effects of kaempferol on multiple immunologically relevant targets are responsible for its immunomodulatory activity. However, the immunosuppressive effects may be more relevant in a T-cell dominated context.

Indexed as

antioxidantindoleamine 2,3-dioxygenasekaempferolneopterinphytochemicaltryptophan

Identifiers

PMID32098277
PMCPMC7070836
OpenAlexW3008379879

What OpenQuestion holds

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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.