Evidence map›Paper›PMID 35834588›Full record

ArticlePloS one2022

Development and validation of an LC-MS/MS method for determination of B vitamins and some its derivatives in whole blood.

David Kahoun, Pavla Fojtíková, František Vácha, Marie Čížková, Roman Vodička, Eva Nováková, Václav Hypša

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
7.3field-weighted citation impact, top 2% 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

11 citing papers in PubMed, 38 citations in OpenAlex.

  1. Article
  2. Review
  3. A Simultaneous Determination of the BInternational journal of molecular sciences · 2025
    Article
  4. Review
  5. Article
  6. Review
  7. Functional characterization of vitamin BFrontiers in microbiology · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. 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

7 authors at 2 institutions in 1 country.

David KahounDepartment of Chemistry, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czech Republic.ORCID 0000-0002-6631-4710
Pavla FojtíkováDepartment of Chemistry, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czech Republic.
František VáchaDepartment of Chemistry, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czech Republic.
Marie ČížkováDepartment of Chemistry, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czech Republic.
Roman VodičkaPrague Zoo, Prague, Czech Republic.
Eva NovákováDepartment of Parasitology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czech Republic.
Václav HypšaDepartment of Parasitology, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czech Republic.
University of South Bohemia in České Budějovice · CZPrague Zoo · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Obligate symbiotic bacteria associated with the insects feeding exclusively on vertebrate blood are supposed to complement B vitamins presumably lacking in their diet. Recent genomic analyses revealed considerable differences in biosynthetic capacities across different symbionts, suggesting that levels of B vitamins may vary across different vertebrate hosts. However, a rigorous determination of B vitamins content in blood of various vertebrates has not yet been approached. A reliable analytical method focused on B vitamin complex in blood can provide valuable informative background and understanding of general principles of insect symbiosis. In this work, a chromatographic separation of eight B vitamins (thiamine, riboflavin, niacin, pantothenic acid, pyridoxine, biotin, folic acid, and cyanocobalamine), four B vitamin derivatives (niacinamide, pyridoxal-5-phosphate, 4-pyridoxic acid, and tetrahydrofolic acid), and 3 stable isotope labelled internal standards was developed. Detection was carried out using dual-pressure linear ion trap mass spectrometer in FullScan MS/MS and SIM mode. Except for vitamin B9 (tetrahydrofolic acid), the instrument quantitation limits of all analytes were ranging from 0.42 to 5.0 μg/L, correlation coefficients from 0.9997 to 1.0000, and QC coefficients from 0.53 to 3.2%. Optimization of whole blood sample preparation step was focused especially on evaluation of two types of protein-precipitation agents: trichloroacetic acid and zinc sulphate in methanol. The best results were obtained for zinc sulphate in methanol, but only nine analytes were successfully validated. Accuracy of the procedure using this protein-precipitating agent was ranging from 89 to 120%, precision from 0.5 to 13%, and process efficiency from 65 to 108%. The content of B vitamins in whole blood samples from human and various vertebrates is presented as an application example of this newly developed method.

Indexed as

Vitamin B ComplexAnimalsChromatography, LiquidFolic AcidHumansMethanolRiboflavinTandem Mass SpectrometryThiamineZinc SulfateFolic AcidMethanolRiboflavinThiamineVitamin B ComplexZinc Sulfate

Identifiers

PMID35834588
PMCPMC9282541
OpenAlexW4285389671

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.