Evidence map›Paper›PMID 29500722›Full record

ArticleWiener klinische Wochenschrift2018

Vitamin K2 in multiple sclerosis patients.

Reza Lasemi, Michael Kundi, Nahid Beladi Moghadam, Hanns Moshammer, Johannes A Hainfellner

Open access · hybridAbstract read
In one paragraph

Article in Wiener klinische Wochenschrift, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

26 citing papers in PubMed, 43 citations in OpenAlex.

  1. Review
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  11. Vitamin K: Infection, Inflammation, and Auto-Immunity.Journal of inflammation research · 2024
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  18. The Role of Dietary Nutrients in Peripheral Nerve Regeneration.International journal of molecular sciences · 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

5 authors at 2 institutions in 2 countries.

Reza LasemiDepartment for Environmental Health, Center for Public Health, Medical University of Vienna, Kinderspitalgasse 15, 1090, Vienna, Austria.
Michael KundiDepartment for Environmental Health, Center for Public Health, Medical University of Vienna, Kinderspitalgasse 15, 1090, Vienna, Austria. michael.kundi@meduniwien.ac.at.ORCID http://orcid.org/0000-0002-2707-3213
Nahid Beladi MoghadamNeurology Department, Shahid Beheshti University of Medical Science, Tehran, Iran.
Hanns MoshammerDepartment for Environmental Health, Center for Public Health, Medical University of Vienna, Kinderspitalgasse 15, 1090, Vienna, Austria.
Johannes A HainfellnerInstitute of Neurology, Medical University of Vienna, Vienna, Austria.
Medical University of Vienna · ATShahid Beheshti University · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVitamin K2 (VK2) belongs to the vitamin K family and comprises a number of subtypes differing in length of side chains consisting of isoprenoid groups (menaquinone-n, MK-n). It is essential for a number of physiological functions although the full spectrum of activity has not yet been elucidated. Due to its role in protection of mitochondrial damage, VK2 could be relevant in preventing disease progress in multiple sclerosis (MS).

methodsWe measured VK2 serum levels by the double antibody sandwich Enzyme-linked Immunosorbent Assay (ELISA) technique in MS patients and age and sex matched controls, both under vitamin D supplementation, and related it to disease characteristics and treatment.

resultsOverall, 45 MS patients (31 females and 39 of the relapsing-remitting type) and 29 healthy controls (19 females) were included in the analysis. The MS patients had vastly lower VK2 blood levels than controls (235 ± 100 ng/ml vs. 812 ± 154 ng/ml, respectively). Female patients had significantly lower VK2 levels than males and a decrease with age by approximately 10% per decade was found. The VK2 levels were lower with increasing numbers of attacks per year and were higher in patients with optic nerve lesions. No consistent relationship with medications was detected.

conclusionThe substantially lower levels of VK2 in MS patients could be due to depletion, lower production in the gut, diminished absorption or, less likely, reduced intake of precursor vitamin K1. The role of VK2 in MS development and progress deserves further study.

Indexed as

Multiple SclerosisCase-Control StudiesCross-Sectional StudiesFemaleHumansMaleVitamin KVitamin K 2Vitamin KVitamin K 2AgeGenderMenaquinones

Identifiers

PMID29500722
PMCPMC5966473
OpenAlexW2791320493

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

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.